Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid

[mirror_ubuntu-bionic-kernel.git] / scripts / analyze_suspend.py

#!/usr/bin/python
#
# Tool for analyzing suspend/resume timing
# Copyright (c) 2013, Intel Corporation.
#
# This program is free software; you can redistribute it and/or modify it
# under the terms and conditions of the GNU General Public License,
# version 2, as published by the Free Software Foundation.
#
# This program is distributed in the hope it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
# more details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
#
# Authors:
#        Todd Brandt <todd.e.brandt@linux.intel.com>
#
# Description:
#        This tool is designed to assist kernel and OS developers in optimizing
#        their linux stack's suspend/resume time. Using a kernel image built
#        with a few extra options enabled, the tool will execute a suspend and
#        will capture dmesg and ftrace data until resume is complete. This data
#        is transformed into a device timeline and a callgraph to give a quick
#        and detailed view of which devices and callbacks are taking the most
#        time in suspend/resume. The output is a single html file which can be
#        viewed in firefox or chrome.
#
#        The following kernel build options are required:
#                CONFIG_PM_DEBUG=y
#                CONFIG_PM_SLEEP_DEBUG=y
#                CONFIG_FTRACE=y
#                CONFIG_FUNCTION_TRACER=y
#                CONFIG_FUNCTION_GRAPH_TRACER=y
#
#        For kernel versions older than 3.15:
#        The following additional kernel parameters are required:
#                (e.g. in file /etc/default/grub)
#                GRUB_CMDLINE_LINUX_DEFAULT="... initcall_debug log_buf_len=16M ..."
#

# ----------------- LIBRARIES --------------------

import sys
import time
import os
import string
import re
import platform
from datetime import datetime
import struct

# ----------------- CLASSES --------------------

# Class: SystemValues
# Description:
#        A global, single-instance container used to
#        store system values and test parameters
class SystemValues:
        version = 3.0
        verbose = False
        testdir = '.'
        tpath = '/sys/kernel/debug/tracing/'
        fpdtpath = '/sys/firmware/acpi/tables/FPDT'
        epath = '/sys/kernel/debug/tracing/events/power/'
        traceevents = [
                'suspend_resume',
                'device_pm_callback_end',
                'device_pm_callback_start'
        ]
        modename = {
                'freeze': 'Suspend-To-Idle (S0)',
                'standby': 'Power-On Suspend (S1)',
                'mem': 'Suspend-to-RAM (S3)',
                'disk': 'Suspend-to-disk (S4)'
        }
        mempath = '/dev/mem'
        powerfile = '/sys/power/state'
        suspendmode = 'mem'
        hostname = 'localhost'
        prefix = 'test'
        teststamp = ''
        dmesgfile = ''
        ftracefile = ''
        htmlfile = ''
        rtcwake = False
        rtcwaketime = 10
        rtcpath = ''
        android = False
        adb = 'adb'
        devicefilter = []
        stamp = 0
        execcount = 1
        x2delay = 0
        usecallgraph = False
        usetraceevents = False
        usetraceeventsonly = False
        notestrun = False
        altdevname = dict()
        postresumetime = 0
        tracertypefmt = '# tracer: (?P<t>.*)'
        firmwarefmt = '# fwsuspend (?P<s>[0-9]*) fwresume (?P<r>[0-9]*)$'
        postresumefmt = '# post resume time (?P<t>[0-9]*)$'
        stampfmt = '# suspend-(?P<m>[0-9]{2})(?P<d>[0-9]{2})(?P<y>[0-9]{2})-'+\
                                '(?P<H>[0-9]{2})(?P<M>[0-9]{2})(?P<S>[0-9]{2})'+\
                                ' (?P<host>.*) (?P<mode>.*) (?P<kernel>.*)$'
        def __init__(self):
                self.hostname = platform.node()
                if(self.hostname == ''):
                        self.hostname = 'localhost'
                rtc = "rtc0"
                if os.path.exists('/dev/rtc'):
                        rtc = os.readlink('/dev/rtc')
                rtc = '/sys/class/rtc/'+rtc
                if os.path.exists(rtc) and os.path.exists(rtc+'/date') and \
                        os.path.exists(rtc+'/time') and os.path.exists(rtc+'/wakealarm'):
                        self.rtcpath = rtc
        def setOutputFile(self):
                if((self.htmlfile == '') and (self.dmesgfile != '')):
                        m = re.match('(?P<name>.*)_dmesg\.txt$', self.dmesgfile)
                        if(m):
                                self.htmlfile = m.group('name')+'.html'
                if((self.htmlfile == '') and (self.ftracefile != '')):
                        m = re.match('(?P<name>.*)_ftrace\.txt$', self.ftracefile)
                        if(m):
                                self.htmlfile = m.group('name')+'.html'
                if(self.htmlfile == ''):
                        self.htmlfile = 'output.html'
        def initTestOutput(self, subdir):
                if(not self.android):
                        self.prefix = self.hostname
                        v = open('/proc/version', 'r').read().strip()
                        kver = string.split(v)[2]
                else:
                        self.prefix = 'android'
                        v = os.popen(self.adb+' shell cat /proc/version').read().strip()
                        kver = string.split(v)[2]
                testtime = datetime.now().strftime('suspend-%m%d%y-%H%M%S')
                if(subdir != "."):
                        self.testdir = subdir+"/"+testtime
                else:
                        self.testdir = testtime
                self.teststamp = \
                        '# '+testtime+' '+self.prefix+' '+self.suspendmode+' '+kver
                self.dmesgfile = \
                        self.testdir+'/'+self.prefix+'_'+self.suspendmode+'_dmesg.txt'
                self.ftracefile = \
                        self.testdir+'/'+self.prefix+'_'+self.suspendmode+'_ftrace.txt'
                self.htmlfile = \
                        self.testdir+'/'+self.prefix+'_'+self.suspendmode+'.html'
                os.mkdir(self.testdir)
        def setDeviceFilter(self, devnames):
                self.devicefilter = string.split(devnames)
        def rtcWakeAlarm(self):
                os.system('echo 0 > '+self.rtcpath+'/wakealarm')
                outD = open(self.rtcpath+'/date', 'r').read().strip()
                outT = open(self.rtcpath+'/time', 'r').read().strip()
                mD = re.match('^(?P<y>[0-9]*)-(?P<m>[0-9]*)-(?P<d>[0-9]*)', outD)
                mT = re.match('^(?P<h>[0-9]*):(?P<m>[0-9]*):(?P<s>[0-9]*)', outT)
                if(mD and mT):
                        # get the current time from hardware
                        utcoffset = int((datetime.now() - datetime.utcnow()).total_seconds())
                        dt = datetime(\
                                int(mD.group('y')), int(mD.group('m')), int(mD.group('d')),
                                int(mT.group('h')), int(mT.group('m')), int(mT.group('s')))
                        nowtime = int(dt.strftime('%s')) + utcoffset
                else:
                        # if hardware time fails, use the software time
                        nowtime = int(datetime.now().strftime('%s'))
                alarm = nowtime + self.rtcwaketime
                os.system('echo %d > %s/wakealarm' % (alarm, self.rtcpath))

sysvals = SystemValues()

# Class: DeviceNode
# Description:
#        A container used to create a device hierachy, with a single root node
#        and a tree of child nodes. Used by Data.deviceTopology()
class DeviceNode:
        name = ''
        children = 0
        depth = 0
        def __init__(self, nodename, nodedepth):
                self.name = nodename
                self.children = []
                self.depth = nodedepth

# Class: Data
# Description:
#        The primary container for suspend/resume test data. There is one for
#        each test run. The data is organized into a cronological hierarchy:
#        Data.dmesg {
#               root structure, started as dmesg & ftrace, but now only ftrace
#               contents: times for suspend start/end, resume start/end, fwdata
#               phases {
#                       10 sequential, non-overlapping phases of S/R
#                       contents: times for phase start/end, order/color data for html
#                       devlist {
#                               device callback or action list for this phase
#                               device {
#                                       a single device callback or generic action
#                                       contents: start/stop times, pid/cpu/driver info
#                                               parents/children, html id for timeline/callgraph
#                                               optionally includes an ftrace callgraph
#                                               optionally includes intradev trace events
#                               }
#                       }
#               }
#       }
#
class Data:
        dmesg = {}  # root data structure
        phases = [] # ordered list of phases
        start = 0.0 # test start
        end = 0.0   # test end
        tSuspended = 0.0 # low-level suspend start
        tResumed = 0.0   # low-level resume start
        tLow = 0.0       # time spent in low-level suspend (standby/freeze)
        fwValid = False  # is firmware data available
        fwSuspend = 0    # time spent in firmware suspend
        fwResume = 0     # time spent in firmware resume
        dmesgtext = []   # dmesg text file in memory
        testnumber = 0
        idstr = ''
        html_device_id = 0
        stamp = 0
        outfile = ''
        def __init__(self, num):
                idchar = 'abcdefghijklmnopqrstuvwxyz'
                self.testnumber = num
                self.idstr = idchar[num]
                self.dmesgtext = []
                self.phases = []
                self.dmesg = { # fixed list of 10 phases
                        'suspend_prepare': {'list': dict(), 'start': -1.0, 'end': -1.0,
                                                                'row': 0, 'color': '#CCFFCC', 'order': 0},
                                'suspend': {'list': dict(), 'start': -1.0, 'end': -1.0,
                                                                'row': 0, 'color': '#88FF88', 'order': 1},
                           'suspend_late': {'list': dict(), 'start': -1.0, 'end': -1.0,
                                                                'row': 0, 'color': '#00AA00', 'order': 2},
                          'suspend_noirq': {'list': dict(), 'start': -1.0, 'end': -1.0,
                                                                'row': 0, 'color': '#008888', 'order': 3},
                    'suspend_machine': {'list': dict(), 'start': -1.0, 'end': -1.0,
                                                                'row': 0, 'color': '#0000FF', 'order': 4},
                         'resume_machine': {'list': dict(), 'start': -1.0, 'end': -1.0,
                                                                'row': 0, 'color': '#FF0000', 'order': 5},
                           'resume_noirq': {'list': dict(), 'start': -1.0, 'end': -1.0,
                                                                'row': 0, 'color': '#FF9900', 'order': 6},
                           'resume_early': {'list': dict(), 'start': -1.0, 'end': -1.0,
                                                                'row': 0, 'color': '#FFCC00', 'order': 7},
                                 'resume': {'list': dict(), 'start': -1.0, 'end': -1.0,
                                                                'row': 0, 'color': '#FFFF88', 'order': 8},
                        'resume_complete': {'list': dict(), 'start': -1.0, 'end': -1.0,
                                                                'row': 0, 'color': '#FFFFCC', 'order': 9}
                }
                self.phases = self.sortedPhases()
        def getStart(self):
                return self.dmesg[self.phases[0]]['start']
        def setStart(self, time):
                self.start = time
                self.dmesg[self.phases[0]]['start'] = time
        def getEnd(self):
                return self.dmesg[self.phases[-1]]['end']
        def setEnd(self, time):
                self.end = time
                self.dmesg[self.phases[-1]]['end'] = time
        def isTraceEventOutsideDeviceCalls(self, pid, time):
                for phase in self.phases:
                        list = self.dmesg[phase]['list']
                        for dev in list:
                                d = list[dev]
                                if(d['pid'] == pid and time >= d['start'] and
                                        time <= d['end']):
                                        return False
                return True
        def addIntraDevTraceEvent(self, action, name, pid, time):
                if(action == 'mutex_lock_try'):
                        color = 'red'
                elif(action == 'mutex_lock_pass'):
                        color = 'green'
                elif(action == 'mutex_unlock'):
                        color = 'blue'
                else:
                        # create separate colors based on the name
                        v1 = len(name)*10 % 256
                        v2 = string.count(name, 'e')*100 % 256
                        v3 = ord(name[0])*20 % 256
                        color = '#%06X' % ((v1*0x10000) + (v2*0x100) + v3)
                for phase in self.phases:
                        list = self.dmesg[phase]['list']
                        for dev in list:
                                d = list[dev]
                                if(d['pid'] == pid and time >= d['start'] and
                                        time <= d['end']):
                                        e = TraceEvent(action, name, color, time)
                                        if('traceevents' not in d):
                                                d['traceevents'] = []
                                        d['traceevents'].append(e)
                                        return d
                                        break
                return 0
        def capIntraDevTraceEvent(self, action, name, pid, time):
                for phase in self.phases:
                        list = self.dmesg[phase]['list']
                        for dev in list:
                                d = list[dev]
                                if(d['pid'] == pid and time >= d['start'] and
                                        time <= d['end']):
                                        if('traceevents' not in d):
                                                return
                                        for e in d['traceevents']:
                                                if(e.action == action and
                                                        e.name == name and not e.ready):
                                                        e.length = time - e.time
                                                        e.ready = True
                                                        break
                                        return
        def trimTimeVal(self, t, t0, dT, left):
                if left:
                        if(t > t0):
                                if(t - dT < t0):
                                        return t0
                                return t - dT
                        else:
                                return t
                else:
                        if(t < t0 + dT):
                                if(t > t0):
                                        return t0 + dT
                                return t + dT
                        else:
                                return t
        def trimTime(self, t0, dT, left):
                self.tSuspended = self.trimTimeVal(self.tSuspended, t0, dT, left)
                self.tResumed = self.trimTimeVal(self.tResumed, t0, dT, left)
                self.start = self.trimTimeVal(self.start, t0, dT, left)
                self.end = self.trimTimeVal(self.end, t0, dT, left)
                for phase in self.phases:
                        p = self.dmesg[phase]
                        p['start'] = self.trimTimeVal(p['start'], t0, dT, left)
                        p['end'] = self.trimTimeVal(p['end'], t0, dT, left)
                        list = p['list']
                        for name in list:
                                d = list[name]
                                d['start'] = self.trimTimeVal(d['start'], t0, dT, left)
                                d['end'] = self.trimTimeVal(d['end'], t0, dT, left)
                                if('ftrace' in d):
                                        cg = d['ftrace']
                                        cg.start = self.trimTimeVal(cg.start, t0, dT, left)
                                        cg.end = self.trimTimeVal(cg.end, t0, dT, left)
                                        for line in cg.list:
                                                line.time = self.trimTimeVal(line.time, t0, dT, left)
                                if('traceevents' in d):
                                        for e in d['traceevents']:
                                                e.time = self.trimTimeVal(e.time, t0, dT, left)
        def normalizeTime(self, tZero):
                # first trim out any standby or freeze clock time
                if(self.tSuspended != self.tResumed):
                        if(self.tResumed > tZero):
                                self.trimTime(self.tSuspended, \
                                        self.tResumed-self.tSuspended, True)
                        else:
                                self.trimTime(self.tSuspended, \
                                        self.tResumed-self.tSuspended, False)
                # shift the timeline so that tZero is the new 0
                self.tSuspended -= tZero
                self.tResumed -= tZero
                self.start -= tZero
                self.end -= tZero
                for phase in self.phases:
                        p = self.dmesg[phase]
                        p['start'] -= tZero
                        p['end'] -= tZero
                        list = p['list']
                        for name in list:
                                d = list[name]
                                d['start'] -= tZero
                                d['end'] -= tZero
                                if('ftrace' in d):
                                        cg = d['ftrace']
                                        cg.start -= tZero
                                        cg.end -= tZero
                                        for line in cg.list:
                                                line.time -= tZero
                                if('traceevents' in d):
                                        for e in d['traceevents']:
                                                e.time -= tZero
        def newPhaseWithSingleAction(self, phasename, devname, start, end, color):
                for phase in self.phases:
                        self.dmesg[phase]['order'] += 1
                self.html_device_id += 1
                devid = '%s%d' % (self.idstr, self.html_device_id)
                list = dict()
                list[devname] = \
                        {'start': start, 'end': end, 'pid': 0, 'par': '',
                        'length': (end-start), 'row': 0, 'id': devid, 'drv': '' };
                self.dmesg[phasename] = \
                        {'list': list, 'start': start, 'end': end,
                        'row': 0, 'color': color, 'order': 0}
                self.phases = self.sortedPhases()
        def newPhase(self, phasename, start, end, color, order):
                if(order < 0):
                        order = len(self.phases)
                for phase in self.phases[order:]:
                        self.dmesg[phase]['order'] += 1
                if(order > 0):
                        p = self.phases[order-1]
                        self.dmesg[p]['end'] = start
                if(order < len(self.phases)):
                        p = self.phases[order]
                        self.dmesg[p]['start'] = end
                list = dict()
                self.dmesg[phasename] = \
                        {'list': list, 'start': start, 'end': end,
                        'row': 0, 'color': color, 'order': order}
                self.phases = self.sortedPhases()
        def setPhase(self, phase, ktime, isbegin):
                if(isbegin):
                        self.dmesg[phase]['start'] = ktime
                else:
                        self.dmesg[phase]['end'] = ktime
        def dmesgSortVal(self, phase):
                return self.dmesg[phase]['order']
        def sortedPhases(self):
                return sorted(self.dmesg, key=self.dmesgSortVal)
        def sortedDevices(self, phase):
                list = self.dmesg[phase]['list']
                slist = []
                tmp = dict()
                for devname in list:
                        dev = list[devname]
                        tmp[dev['start']] = devname
                for t in sorted(tmp):
                        slist.append(tmp[t])
                return slist
        def fixupInitcalls(self, phase, end):
                # if any calls never returned, clip them at system resume end
                phaselist = self.dmesg[phase]['list']
                for devname in phaselist:
                        dev = phaselist[devname]
                        if(dev['end'] < 0):
                                dev['end'] = end
                                vprint('%s (%s): callback didnt return' % (devname, phase))
        def deviceFilter(self, devicefilter):
                # remove all by the relatives of the filter devnames
                filter = []
                for phase in self.phases:
                        list = self.dmesg[phase]['list']
                        for name in devicefilter:
                                dev = name
                                while(dev in list):
                                        if(dev not in filter):
                                                filter.append(dev)
                                        dev = list[dev]['par']
                                children = self.deviceDescendants(name, phase)
                                for dev in children:
                                        if(dev not in filter):
                                                filter.append(dev)
                for phase in self.phases:
                        list = self.dmesg[phase]['list']
                        rmlist = []
                        for name in list:
                                pid = list[name]['pid']
                                if(name not in filter and pid >= 0):
                                        rmlist.append(name)
                        for name in rmlist:
                                del list[name]
        def fixupInitcallsThatDidntReturn(self):
                # if any calls never returned, clip them at system resume end
                for phase in self.phases:
                        self.fixupInitcalls(phase, self.getEnd())
        def newActionGlobal(self, name, start, end):
                # which phase is this device callback or action "in"
                targetphase = "none"
                overlap = 0.0
                for phase in self.phases:
                        pstart = self.dmesg[phase]['start']
                        pend = self.dmesg[phase]['end']
                        o = max(0, min(end, pend) - max(start, pstart))
                        if(o > overlap):
                                targetphase = phase
                                overlap = o
                if targetphase in self.phases:
                        self.newAction(targetphase, name, -1, '', start, end, '')
                        return True
                return False
        def newAction(self, phase, name, pid, parent, start, end, drv):
                # new device callback for a specific phase
                self.html_device_id += 1
                devid = '%s%d' % (self.idstr, self.html_device_id)
                list = self.dmesg[phase]['list']
                length = -1.0
                if(start >= 0 and end >= 0):
                        length = end - start
                list[name] = {'start': start, 'end': end, 'pid': pid, 'par': parent,
                                          'length': length, 'row': 0, 'id': devid, 'drv': drv }
        def deviceIDs(self, devlist, phase):
                idlist = []
                list = self.dmesg[phase]['list']
                for devname in list:
                        if devname in devlist:
                                idlist.append(list[devname]['id'])
                return idlist
        def deviceParentID(self, devname, phase):
                pdev = ''
                pdevid = ''
                list = self.dmesg[phase]['list']
                if devname in list:
                        pdev = list[devname]['par']
                if pdev in list:
                        return list[pdev]['id']
                return pdev
        def deviceChildren(self, devname, phase):
                devlist = []
                list = self.dmesg[phase]['list']
                for child in list:
                        if(list[child]['par'] == devname):
                                devlist.append(child)
                return devlist
        def deviceDescendants(self, devname, phase):
                children = self.deviceChildren(devname, phase)
                family = children
                for child in children:
                        family += self.deviceDescendants(child, phase)
                return family
        def deviceChildrenIDs(self, devname, phase):
                devlist = self.deviceChildren(devname, phase)
                return self.deviceIDs(devlist, phase)
        def printDetails(self):
                vprint('          test start: %f' % self.start)
                for phase in self.phases:
                        dc = len(self.dmesg[phase]['list'])
                        vprint('    %16s: %f - %f (%d devices)' % (phase, \
                                self.dmesg[phase]['start'], self.dmesg[phase]['end'], dc))
                vprint('            test end: %f' % self.end)
        def masterTopology(self, name, list, depth):
                node = DeviceNode(name, depth)
                for cname in list:
                        clist = self.deviceChildren(cname, 'resume')
                        cnode = self.masterTopology(cname, clist, depth+1)
                        node.children.append(cnode)
                return node
        def printTopology(self, node):
                html = ''
                if node.name:
                        info = ''
                        drv = ''
                        for phase in self.phases:
                                list = self.dmesg[phase]['list']
                                if node.name in list:
                                        s = list[node.name]['start']
                                        e = list[node.name]['end']
                                        if list[node.name]['drv']:
                                                drv = ' {'+list[node.name]['drv']+'}'
                                        info += ('<li>%s: %.3fms</li>' % (phase, (e-s)*1000))
                        html += '<li><b>'+node.name+drv+'</b>'
                        if info:
                                html += '<ul>'+info+'</ul>'
                        html += '</li>'
                if len(node.children) > 0:
                        html += '<ul>'
                        for cnode in node.children:
                                html += self.printTopology(cnode)
                        html += '</ul>'
                return html
        def rootDeviceList(self):
                # list of devices graphed
                real = []
                for phase in self.dmesg:
                        list = self.dmesg[phase]['list']
                        for dev in list:
                                if list[dev]['pid'] >= 0 and dev not in real:
                                        real.append(dev)
                # list of top-most root devices
                rootlist = []
                for phase in self.dmesg:
                        list = self.dmesg[phase]['list']
                        for dev in list:
                                pdev = list[dev]['par']
                                if(re.match('[0-9]*-[0-9]*\.[0-9]*[\.0-9]*\:[\.0-9]*$', pdev)):
                                        continue
                                if pdev and pdev not in real and pdev not in rootlist:
                                        rootlist.append(pdev)
                return rootlist
        def deviceTopology(self):
                rootlist = self.rootDeviceList()
                master = self.masterTopology('', rootlist, 0)
                return self.printTopology(master)

# Class: TraceEvent
# Description:
#        A container for trace event data found in the ftrace file
class TraceEvent:
        ready = False
        name = ''
        time = 0.0
        color = '#FFFFFF'
        length = 0.0
        action = ''
        def __init__(self, a, n, c, t):
                self.action = a
                self.name = n
                self.color = c
                self.time = t

# Class: FTraceLine
# Description:
#        A container for a single line of ftrace data. There are six basic types:
#                callgraph line:
#                         call: "  dpm_run_callback() {"
#                       return: "  }"
#                         leaf: " dpm_run_callback();"
#                trace event:
#                        tracing_mark_write: SUSPEND START or RESUME COMPLETE
#                        suspend_resume: phase or custom exec block data
#                        device_pm_callback: device callback info
class FTraceLine:
        time = 0.0
        length = 0.0
        fcall = False
        freturn = False
        fevent = False
        depth = 0
        name = ''
        type = ''
        def __init__(self, t, m, d):
                self.time = float(t)
                # is this a trace event
                if(d == 'traceevent' or re.match('^ *\/\* *(?P<msg>.*) \*\/ *$', m)):
                        if(d == 'traceevent'):
                                # nop format trace event
                                msg = m
                        else:
                                # function_graph format trace event
                                em = re.match('^ *\/\* *(?P<msg>.*) \*\/ *$', m)
                                msg = em.group('msg')

                        emm = re.match('^(?P<call>.*?): (?P<msg>.*)', msg)
                        if(emm):
                                self.name = emm.group('msg')
                                self.type = emm.group('call')
                        else:
                                self.name = msg
                        self.fevent = True
                        return
                # convert the duration to seconds
                if(d):
                        self.length = float(d)/1000000
                # the indentation determines the depth
                match = re.match('^(?P<d> *)(?P<o>.*)$', m)
                if(not match):
                        return
                self.depth = self.getDepth(match.group('d'))
                m = match.group('o')
                # function return
                if(m[0] == '}'):
                        self.freturn = True
                        if(len(m) > 1):
                                # includes comment with function name
                                match = re.match('^} *\/\* *(?P<n>.*) *\*\/$', m)
                                if(match):
                                        self.name = match.group('n')
                # function call
                else:
                        self.fcall = True
                        # function call with children
                        if(m[-1] == '{'):
                                match = re.match('^(?P<n>.*) *\(.*', m)
                                if(match):
                                        self.name = match.group('n')
                        # function call with no children (leaf)
                        elif(m[-1] == ';'):
                                self.freturn = True
                                match = re.match('^(?P<n>.*) *\(.*', m)
                                if(match):
                                        self.name = match.group('n')
                        # something else (possibly a trace marker)
                        else:
                                self.name = m
        def getDepth(self, str):
                return len(str)/2
        def debugPrint(self, dev):
                if(self.freturn and self.fcall):
                        print('%s -- %f (%02d): %s(); (%.3f us)' % (dev, self.time, \
                                self.depth, self.name, self.length*1000000))
                elif(self.freturn):
                        print('%s -- %f (%02d): %s} (%.3f us)' % (dev, self.time, \
                                self.depth, self.name, self.length*1000000))
                else:
                        print('%s -- %f (%02d): %s() { (%.3f us)' % (dev, self.time, \
                                self.depth, self.name, self.length*1000000))

# Class: FTraceCallGraph
# Description:
#        A container for the ftrace callgraph of a single recursive function.
#        This can be a dpm_run_callback, dpm_prepare, or dpm_complete callgraph
#        Each instance is tied to a single device in a single phase, and is
#        comprised of an ordered list of FTraceLine objects
class FTraceCallGraph:
        start = -1.0
        end = -1.0
        list = []
        invalid = False
        depth = 0
        def __init__(self):
                self.start = -1.0
                self.end = -1.0
                self.list = []
                self.depth = 0
        def setDepth(self, line):
                if(line.fcall and not line.freturn):
                        line.depth = self.depth
                        self.depth += 1
                elif(line.freturn and not line.fcall):
                        self.depth -= 1
                        line.depth = self.depth
                else:
                        line.depth = self.depth
        def addLine(self, line, match):
                if(not self.invalid):
                        self.setDepth(line)
                if(line.depth == 0 and line.freturn):
                        if(self.start < 0):
                                self.start = line.time
                        self.end = line.time
                        self.list.append(line)
                        return True
                if(self.invalid):
                        return False
                if(len(self.list) >= 1000000 or self.depth < 0):
                        if(len(self.list) > 0):
                                first = self.list[0]
                                self.list = []
                                self.list.append(first)
                        self.invalid = True
                        if(not match):
                                return False
                        id = 'task %s cpu %s' % (match.group('pid'), match.group('cpu'))
                        window = '(%f - %f)' % (self.start, line.time)
                        if(self.depth < 0):
                                print('Too much data for '+id+\
                                        ' (buffer overflow), ignoring this callback')
                        else:
                                print('Too much data for '+id+\
                                        ' '+window+', ignoring this callback')
                        return False
                self.list.append(line)
                if(self.start < 0):
                        self.start = line.time
                return False
        def slice(self, t0, tN):
                minicg = FTraceCallGraph()
                count = -1
                firstdepth = 0
                for l in self.list:
                        if(l.time < t0 or l.time > tN):
                                continue
                        if(count < 0):
                                if(not l.fcall or l.name == 'dev_driver_string'):
                                        continue
                                firstdepth = l.depth
                                count = 0
                        l.depth -= firstdepth
                        minicg.addLine(l, 0)
                        if((count == 0 and l.freturn and l.fcall) or
                                (count > 0 and l.depth <= 0)):
                                break
                        count += 1
                return minicg
        def sanityCheck(self):
                stack = dict()
                cnt = 0
                for l in self.list:
                        if(l.fcall and not l.freturn):
                                stack[l.depth] = l
                                cnt += 1
                        elif(l.freturn and not l.fcall):
                                if(l.depth not in stack):
                                        return False
                                stack[l.depth].length = l.length
                                stack[l.depth] = 0
                                l.length = 0
                                cnt -= 1
                if(cnt == 0):
                        return True
                return False
        def debugPrint(self, filename):
                if(filename == 'stdout'):
                        print('[%f - %f]') % (self.start, self.end)
                        for l in self.list:
                                if(l.freturn and l.fcall):
                                        print('%f (%02d): %s(); (%.3f us)' % (l.time, \
                                                l.depth, l.name, l.length*1000000))
                                elif(l.freturn):
                                        print('%f (%02d): %s} (%.3f us)' % (l.time, \
                                                l.depth, l.name, l.length*1000000))
                                else:
                                        print('%f (%02d): %s() { (%.3f us)' % (l.time, \
                                                l.depth, l.name, l.length*1000000))
                        print(' ')
                else:
                        fp = open(filename, 'w')
                        print(filename)
                        for l in self.list:
                                if(l.freturn and l.fcall):
                                        fp.write('%f (%02d): %s(); (%.3f us)\n' % (l.time, \
                                                l.depth, l.name, l.length*1000000))
                                elif(l.freturn):
                                        fp.write('%f (%02d): %s} (%.3f us)\n' % (l.time, \
                                                l.depth, l.name, l.length*1000000))
                                else:
                                        fp.write('%f (%02d): %s() { (%.3f us)\n' % (l.time, \
                                                l.depth, l.name, l.length*1000000))
                        fp.close()

# Class: Timeline
# Description:
#        A container for a suspend/resume html timeline. In older versions
#        of the script there were multiple timelines, but in the latest
#        there is only one.
class Timeline:
        html = {}
        scaleH = 0.0 # height of the row as a percent of the timeline height
        rowH = 0.0 # height of each row in percent of the timeline height
        row_height_pixels = 30
        maxrows = 0
        height = 0
        def __init__(self):
                self.html = {
                        'timeline': '',
                        'legend': '',
                        'scale': ''
                }
        def setRows(self, rows):
                self.maxrows = int(rows)
                self.scaleH = 100.0/float(self.maxrows)
                self.height = self.maxrows*self.row_height_pixels
                r = float(self.maxrows - 1)
                if(r < 1.0):
                        r = 1.0
                self.rowH = (100.0 - self.scaleH)/r

# Class: TestRun
# Description:
#        A container for a suspend/resume test run. This is necessary as
#        there could be more than one, and they need to be separate.
class TestRun:
        ftrace_line_fmt_fg = \
                '^ *(?P<time>[0-9\.]*) *\| *(?P<cpu>[0-9]*)\)'+\
                ' *(?P<proc>.*)-(?P<pid>[0-9]*) *\|'+\
                '[ +!]*(?P<dur>[0-9\.]*) .*\|  (?P<msg>.*)'
        ftrace_line_fmt_nop = \
                ' *(?P<proc>.*)-(?P<pid>[0-9]*) *\[(?P<cpu>[0-9]*)\] *'+\
                '(?P<flags>.{4}) *(?P<time>[0-9\.]*): *'+\
                '(?P<msg>.*)'
        ftrace_line_fmt = ftrace_line_fmt_nop
        cgformat = False
        ftemp = dict()
        ttemp = dict()
        inthepipe = False
        tracertype = ''
        data = 0
        def __init__(self, dataobj):
                self.data = dataobj
                self.ftemp = dict()
                self.ttemp = dict()
        def isReady(self):
                if(tracertype == '' or not data):
                        return False
                return True
        def setTracerType(self, tracer):
                self.tracertype = tracer
                if(tracer == 'function_graph'):
                        self.cgformat = True
                        self.ftrace_line_fmt = self.ftrace_line_fmt_fg
                elif(tracer == 'nop'):
                        self.ftrace_line_fmt = self.ftrace_line_fmt_nop
                else:
                        doError('Invalid tracer format: [%s]' % tracer, False)

# ----------------- FUNCTIONS --------------------

# Function: vprint
# Description:
#        verbose print (prints only with -verbose option)
# Arguments:
#        msg: the debug/log message to print
def vprint(msg):
        global sysvals
        if(sysvals.verbose):
                print(msg)

# Function: initFtrace
# Description:
#        Configure ftrace to use trace events and/or a callgraph
def initFtrace():
        global sysvals

        tp = sysvals.tpath
        cf = 'dpm_run_callback'
        if(sysvals.usetraceeventsonly):
                cf = '-e dpm_prepare -e dpm_complete -e dpm_run_callback'
        if(sysvals.usecallgraph or sysvals.usetraceevents):
                print('INITIALIZING FTRACE...')
                # turn trace off
                os.system('echo 0 > '+tp+'tracing_on')
                # set the trace clock to global
                os.system('echo global > '+tp+'trace_clock')
                # set trace buffer to a huge value
                os.system('echo nop > '+tp+'current_tracer')
                os.system('echo 100000 > '+tp+'buffer_size_kb')
                # initialize the callgraph trace, unless this is an x2 run
                if(sysvals.usecallgraph and sysvals.execcount == 1):
                        # set trace type
                        os.system('echo function_graph > '+tp+'current_tracer')
                        os.system('echo "" > '+tp+'set_ftrace_filter')
                        # set trace format options
                        os.system('echo funcgraph-abstime > '+tp+'trace_options')
                        os.system('echo funcgraph-proc > '+tp+'trace_options')
                        # focus only on device suspend and resume
                        os.system('cat '+tp+'available_filter_functions | grep '+\
                                cf+' > '+tp+'set_graph_function')
                if(sysvals.usetraceevents):
                        # turn trace events on
                        events = iter(sysvals.traceevents)
                        for e in events:
                                os.system('echo 1 > '+sysvals.epath+e+'/enable')
                # clear the trace buffer
                os.system('echo "" > '+tp+'trace')

# Function: initFtraceAndroid
# Description:
#        Configure ftrace to capture trace events
def initFtraceAndroid():
        global sysvals

        tp = sysvals.tpath
        if(sysvals.usetraceevents):
                print('INITIALIZING FTRACE...')
                # turn trace off
                os.system(sysvals.adb+" shell 'echo 0 > "+tp+"tracing_on'")
                # set the trace clock to global
                os.system(sysvals.adb+" shell 'echo global > "+tp+"trace_clock'")
                # set trace buffer to a huge value
                os.system(sysvals.adb+" shell 'echo nop > "+tp+"current_tracer'")
                os.system(sysvals.adb+" shell 'echo 10000 > "+tp+"buffer_size_kb'")
                # turn trace events on
                events = iter(sysvals.traceevents)
                for e in events:
                        os.system(sysvals.adb+" shell 'echo 1 > "+\
                                sysvals.epath+e+"/enable'")
                # clear the trace buffer
                os.system(sysvals.adb+" shell 'echo \"\" > "+tp+"trace'")

# Function: verifyFtrace
# Description:
#        Check that ftrace is working on the system
# Output:
#        True or False
def verifyFtrace():
        global sysvals
        # files needed for any trace data
        files = ['buffer_size_kb', 'current_tracer', 'trace', 'trace_clock',
                         'trace_marker', 'trace_options', 'tracing_on']
        # files needed for callgraph trace data
        tp = sysvals.tpath
        if(sysvals.usecallgraph):
                files += [
                        'available_filter_functions',
                        'set_ftrace_filter',
                        'set_graph_function'
                ]
        for f in files:
                if(sysvals.android):
                        out = os.popen(sysvals.adb+' shell ls '+tp+f).read().strip()
                        if(out != tp+f):
                                return False
                else:
                        if(os.path.exists(tp+f) == False):
                                return False
        return True

# Function: parseStamp
# Description:
#        Pull in the stamp comment line from the data file(s),
#        create the stamp, and add it to the global sysvals object
# Arguments:
#        m: the valid re.match output for the stamp line
def parseStamp(m, data):
        global sysvals
        data.stamp = {'time': '', 'host': '', 'mode': ''}
        dt = datetime(int(m.group('y'))+2000, int(m.group('m')),
                int(m.group('d')), int(m.group('H')), int(m.group('M')),
                int(m.group('S')))
        data.stamp['time'] = dt.strftime('%B %d %Y, %I:%M:%S %p')
        data.stamp['host'] = m.group('host')
        data.stamp['mode'] = m.group('mode')
        data.stamp['kernel'] = m.group('kernel')
        sysvals.suspendmode = data.stamp['mode']
        if not sysvals.stamp:
                sysvals.stamp = data.stamp

# Function: diffStamp
# Description:
#       compare the host, kernel, and mode fields in 3 stamps
# Arguments:
#        stamp1: string array with mode, kernel, and host
#        stamp2: string array with mode, kernel, and host
# Return:
#       True if stamps differ, False if they're the same
def diffStamp(stamp1, stamp2):
        if 'host' in stamp1 and 'host' in stamp2:
                if stamp1['host'] != stamp2['host']:
                        return True
        if 'kernel' in stamp1 and 'kernel' in stamp2:
                if stamp1['kernel'] != stamp2['kernel']:
                        return True
        if 'mode' in stamp1 and 'mode' in stamp2:
                if stamp1['mode'] != stamp2['mode']:
                        return True
        return False

# Function: doesTraceLogHaveTraceEvents
# Description:
#        Quickly determine if the ftrace log has some or all of the trace events
#        required for primary parsing. Set the usetraceevents and/or
#        usetraceeventsonly flags in the global sysvals object
def doesTraceLogHaveTraceEvents():
        global sysvals

        sysvals.usetraceeventsonly = True
        sysvals.usetraceevents = False
        for e in sysvals.traceevents:
                out = os.popen('cat '+sysvals.ftracefile+' | grep "'+e+': "').read()
                if(not out):
                        sysvals.usetraceeventsonly = False
                if(e == 'suspend_resume' and out):
                        sysvals.usetraceevents = True

# Function: appendIncompleteTraceLog
# Description:
#        [deprecated for kernel 3.15 or newer]
#        Legacy support of ftrace outputs that lack the device_pm_callback
#        and/or suspend_resume trace events. The primary data should be
#        taken from dmesg, and this ftrace is used only for callgraph data
#        or custom actions in the timeline. The data is appended to the Data
#        objects provided.
# Arguments:
#        testruns: the array of Data objects obtained from parseKernelLog
def appendIncompleteTraceLog(testruns):
        global sysvals

        # create TestRun vessels for ftrace parsing
        testcnt = len(testruns)
        testidx = -1
        testrun = []
        for data in testruns:
                testrun.append(TestRun(data))

        # extract the callgraph and traceevent data
        vprint('Analyzing the ftrace data...')
        tf = open(sysvals.ftracefile, 'r')
        for line in tf:
                # remove any latent carriage returns
                line = line.replace('\r\n', '')
                # grab the time stamp first (signifies the start of the test run)
                m = re.match(sysvals.stampfmt, line)
                if(m):
                        testidx += 1
                        parseStamp(m, testrun[testidx].data)
                        continue
                # pull out any firmware data
                if(re.match(sysvals.firmwarefmt, line)):
                        continue
                # if we havent found a test time stamp yet keep spinning til we do
                if(testidx < 0):
                        continue
                # determine the trace data type (required for further parsing)
                m = re.match(sysvals.tracertypefmt, line)
                if(m):
                        tracer = m.group('t')
                        testrun[testidx].setTracerType(tracer)
                        continue
                # parse only valid lines, if this isnt one move on
                m = re.match(testrun[testidx].ftrace_line_fmt, line)
                if(not m):
                        continue
                # gather the basic message data from the line
                m_time = m.group('time')
                m_pid = m.group('pid')
                m_msg = m.group('msg')
                if(testrun[testidx].cgformat):
                        m_param3 = m.group('dur')
                else:
                        m_param3 = 'traceevent'
                if(m_time and m_pid and m_msg):
                        t = FTraceLine(m_time, m_msg, m_param3)
                        pid = int(m_pid)
                else:
                        continue
                # the line should be a call, return, or event
                if(not t.fcall and not t.freturn and not t.fevent):
                        continue
                # only parse the ftrace data during suspend/resume
                data = testrun[testidx].data
                if(not testrun[testidx].inthepipe):
                        # look for the suspend start marker
                        if(t.fevent):
                                if(t.name == 'SUSPEND START'):
                                        testrun[testidx].inthepipe = True
                                        data.setStart(t.time)
                                continue
                else:
                        # trace event processing
                        if(t.fevent):
                                if(t.name == 'RESUME COMPLETE'):
                                        testrun[testidx].inthepipe = False
                                        data.setEnd(t.time)
                                        if(testidx == testcnt - 1):
                                                break
                                        continue
                                # general trace events have two types, begin and end
                                if(re.match('(?P<name>.*) begin$', t.name)):
                                        isbegin = True
                                elif(re.match('(?P<name>.*) end$', t.name)):
                                        isbegin = False
                                else:
                                        continue
                                m = re.match('(?P<name>.*)\[(?P<val>[0-9]*)\] .*', t.name)
                                if(m):
                                        val = m.group('val')
                                        if val == '0':
                                                name = m.group('name')
                                        else:
                                                name = m.group('name')+'['+val+']'
                                else:
                                        m = re.match('(?P<name>.*) .*', t.name)
                                        name = m.group('name')
                                # special processing for trace events
                                if re.match('dpm_prepare\[.*', name):
                                        continue
                                elif re.match('machine_suspend.*', name):
                                        continue
                                elif re.match('suspend_enter\[.*', name):
                                        if(not isbegin):
                                                data.dmesg['suspend_prepare']['end'] = t.time
                                        continue
                                elif re.match('dpm_suspend\[.*', name):
                                        if(not isbegin):
                                                data.dmesg['suspend']['end'] = t.time
                                        continue
                                elif re.match('dpm_suspend_late\[.*', name):
                                        if(isbegin):
                                                data.dmesg['suspend_late']['start'] = t.time
                                        else:
                                                data.dmesg['suspend_late']['end'] = t.time
                                        continue
                                elif re.match('dpm_suspend_noirq\[.*', name):
                                        if(isbegin):
                                                data.dmesg['suspend_noirq']['start'] = t.time
                                        else:
                                                data.dmesg['suspend_noirq']['end'] = t.time
                                        continue
                                elif re.match('dpm_resume_noirq\[.*', name):
                                        if(isbegin):
                                                data.dmesg['resume_machine']['end'] = t.time
                                                data.dmesg['resume_noirq']['start'] = t.time
                                        else:
                                                data.dmesg['resume_noirq']['end'] = t.time
                                        continue
                                elif re.match('dpm_resume_early\[.*', name):
                                        if(isbegin):
                                                data.dmesg['resume_early']['start'] = t.time
                                        else:
                                                data.dmesg['resume_early']['end'] = t.time
                                        continue
                                elif re.match('dpm_resume\[.*', name):
                                        if(isbegin):
                                                data.dmesg['resume']['start'] = t.time
                                        else:
                                                data.dmesg['resume']['end'] = t.time
                                        continue
                                elif re.match('dpm_complete\[.*', name):
                                        if(isbegin):
                                                data.dmesg['resume_complete']['start'] = t.time
                                        else:
                                                data.dmesg['resume_complete']['end'] = t.time
                                        continue
                                # is this trace event outside of the devices calls
                                if(data.isTraceEventOutsideDeviceCalls(pid, t.time)):
                                        # global events (outside device calls) are simply graphed
                                        if(isbegin):
                                                # store each trace event in ttemp
                                                if(name not in testrun[testidx].ttemp):
                                                        testrun[testidx].ttemp[name] = []
                                                testrun[testidx].ttemp[name].append(\
                                                        {'begin': t.time, 'end': t.time})
                                        else:
                                                # finish off matching trace event in ttemp
                                                if(name in testrun[testidx].ttemp):
                                                        testrun[testidx].ttemp[name][-1]['end'] = t.time
                                else:
                                        if(isbegin):
                                                data.addIntraDevTraceEvent('', name, pid, t.time)
                                        else:
                                                data.capIntraDevTraceEvent('', name, pid, t.time)
                        # call/return processing
                        elif sysvals.usecallgraph:
                                # create a callgraph object for the data
                                if(pid not in testrun[testidx].ftemp):
                                        testrun[testidx].ftemp[pid] = []
                                        testrun[testidx].ftemp[pid].append(FTraceCallGraph())
                                # when the call is finished, see which device matches it
                                cg = testrun[testidx].ftemp[pid][-1]
                                if(cg.addLine(t, m)):
                                        testrun[testidx].ftemp[pid].append(FTraceCallGraph())
        tf.close()

        for test in testrun:
                # add the traceevent data to the device hierarchy
                if(sysvals.usetraceevents):
                        for name in test.ttemp:
                                for event in test.ttemp[name]:
                                        begin = event['begin']
                                        end = event['end']
                                        # if event starts before timeline start, expand timeline
                                        if(begin < test.data.start):
                                                test.data.setStart(begin)
                                        # if event ends after timeline end, expand the timeline
                                        if(end > test.data.end):
                                                test.data.setEnd(end)
                                        test.data.newActionGlobal(name, begin, end)

                # add the callgraph data to the device hierarchy
                for pid in test.ftemp:
                        for cg in test.ftemp[pid]:
                                if(not cg.sanityCheck()):
                                        id = 'task %s cpu %s' % (pid, m.group('cpu'))
                                        vprint('Sanity check failed for '+\
                                                id+', ignoring this callback')
                                        continue
                                callstart = cg.start
                                callend = cg.end
                                for p in test.data.phases:
                                        if(test.data.dmesg[p]['start'] <= callstart and
                                                callstart <= test.data.dmesg[p]['end']):
                                                list = test.data.dmesg[p]['list']
                                                for devname in list:
                                                        dev = list[devname]
                                                        if(pid == dev['pid'] and
                                                                callstart <= dev['start'] and
                                                                callend >= dev['end']):
                                                                dev['ftrace'] = cg
                                                break

                if(sysvals.verbose):
                        test.data.printDetails()


        # add the time in between the tests as a new phase so we can see it
        if(len(testruns) > 1):
                t1e = testruns[0].getEnd()
                t2s = testruns[-1].getStart()
                testruns[-1].newPhaseWithSingleAction('user mode', \
                        'user mode', t1e, t2s, '#FF9966')

# Function: parseTraceLog
# Description:
#        Analyze an ftrace log output file generated from this app during
#        the execution phase. Used when the ftrace log is the primary data source
#        and includes the suspend_resume and device_pm_callback trace events
#        The ftrace filename is taken from sysvals
# Output:
#        An array of Data objects
def parseTraceLog():
        global sysvals

        vprint('Analyzing the ftrace data...')
        if(os.path.exists(sysvals.ftracefile) == False):
                doError('%s doesnt exist' % sysvals.ftracefile, False)

        # extract the callgraph and traceevent data
        testruns = []
        testdata = []
        testrun = 0
        data = 0
        tf = open(sysvals.ftracefile, 'r')
        phase = 'suspend_prepare'
        for line in tf:
                # remove any latent carriage returns
                line = line.replace('\r\n', '')
                # stamp line: each stamp means a new test run
                m = re.match(sysvals.stampfmt, line)
                if(m):
                        data = Data(len(testdata))
                        testdata.append(data)
                        testrun = TestRun(data)
                        testruns.append(testrun)
                        parseStamp(m, data)
                        continue
                if(not data):
                        continue
                # firmware line: pull out any firmware data
                m = re.match(sysvals.firmwarefmt, line)
                if(m):
                        data.fwSuspend = int(m.group('s'))
                        data.fwResume = int(m.group('r'))
                        if(data.fwSuspend > 0 or data.fwResume > 0):
                                data.fwValid = True
                        continue
                # tracer type line: determine the trace data type
                m = re.match(sysvals.tracertypefmt, line)
                if(m):
                        tracer = m.group('t')
                        testrun.setTracerType(tracer)
                        continue
                # post resume time line: did this test run include post-resume data
                m = re.match(sysvals.postresumefmt, line)
                if(m):
                        t = int(m.group('t'))
                        if(t > 0):
                                sysvals.postresumetime = t
                        continue
                # ftrace line: parse only valid lines
                m = re.match(testrun.ftrace_line_fmt, line)
                if(not m):
                        continue
                # gather the basic message data from the line
                m_time = m.group('time')
                m_pid = m.group('pid')
                m_msg = m.group('msg')
                if(testrun.cgformat):
                        m_param3 = m.group('dur')
                else:
                        m_param3 = 'traceevent'
                if(m_time and m_pid and m_msg):
                        t = FTraceLine(m_time, m_msg, m_param3)
                        pid = int(m_pid)
                else:
                        continue
                # the line should be a call, return, or event
                if(not t.fcall and not t.freturn and not t.fevent):
                        continue
                # only parse the ftrace data during suspend/resume
                if(not testrun.inthepipe):
                        # look for the suspend start marker
                        if(t.fevent):
                                if(t.name == 'SUSPEND START'):
                                        testrun.inthepipe = True
                                        data.setStart(t.time)
                        continue
                # trace event processing
                if(t.fevent):
                        if(t.name == 'RESUME COMPLETE'):
                                if(sysvals.postresumetime > 0):
                                        phase = 'post_resume'
                                        data.newPhase(phase, t.time, t.time, '#FF9966', -1)
                                else:
                                        testrun.inthepipe = False
                                data.setEnd(t.time)
                                continue
                        if(phase == 'post_resume'):
                                data.setEnd(t.time)
                        if(t.type == 'suspend_resume'):
                                # suspend_resume trace events have two types, begin and end
                                if(re.match('(?P<name>.*) begin$', t.name)):
                                        isbegin = True
                                elif(re.match('(?P<name>.*) end$', t.name)):
                                        isbegin = False
                                else:
                                        continue
                                m = re.match('(?P<name>.*)\[(?P<val>[0-9]*)\] .*', t.name)
                                if(m):
                                        val = m.group('val')
                                        if val == '0':
                                                name = m.group('name')
                                        else:
                                                name = m.group('name')+'['+val+']'
                                else:
                                        m = re.match('(?P<name>.*) .*', t.name)
                                        name = m.group('name')
                                # ignore these events
                                if(re.match('acpi_suspend\[.*', t.name) or
                                        re.match('suspend_enter\[.*', name)):
                                        continue
                                # -- phase changes --
                                # suspend_prepare start
                                if(re.match('dpm_prepare\[.*', t.name)):
                                        phase = 'suspend_prepare'
                                        if(not isbegin):
                                                data.dmesg[phase]['end'] = t.time
                                        continue
                                # suspend start
                                elif(re.match('dpm_suspend\[.*', t.name)):
                                        phase = 'suspend'
                                        data.setPhase(phase, t.time, isbegin)
                                        continue
                                # suspend_late start
                                elif(re.match('dpm_suspend_late\[.*', t.name)):
                                        phase = 'suspend_late'
                                        data.setPhase(phase, t.time, isbegin)
                                        continue
                                # suspend_noirq start
                                elif(re.match('dpm_suspend_noirq\[.*', t.name)):
                                        phase = 'suspend_noirq'
                                        data.setPhase(phase, t.time, isbegin)
                                        if(not isbegin):
                                                phase = 'suspend_machine'
                                                data.dmesg[phase]['start'] = t.time
                                        continue
                                # suspend_machine/resume_machine
                                elif(re.match('machine_suspend\[.*', t.name)):
                                        if(isbegin):
                                                phase = 'suspend_machine'
                                                data.dmesg[phase]['end'] = t.time
                                                data.tSuspended = t.time
                                        else:
                                                if(sysvals.suspendmode in ['mem', 'disk']):
                                                        data.dmesg['suspend_machine']['end'] = t.time
                                                        data.tSuspended = t.time
                                                phase = 'resume_machine'
                                                data.dmesg[phase]['start'] = t.time
                                                data.tResumed = t.time
                                                data.tLow = data.tResumed - data.tSuspended
                                        continue
                                # resume_noirq start
                                elif(re.match('dpm_resume_noirq\[.*', t.name)):
                                        phase = 'resume_noirq'
                                        data.setPhase(phase, t.time, isbegin)
                                        if(isbegin):
                                                data.dmesg['resume_machine']['end'] = t.time
                                        continue
                                # resume_early start
                                elif(re.match('dpm_resume_early\[.*', t.name)):
                                        phase = 'resume_early'
                                        data.setPhase(phase, t.time, isbegin)
                                        continue
                                # resume start
                                elif(re.match('dpm_resume\[.*', t.name)):
                                        phase = 'resume'
                                        data.setPhase(phase, t.time, isbegin)
                                        continue
                                # resume complete start
                                elif(re.match('dpm_complete\[.*', t.name)):
                                        phase = 'resume_complete'
                                        if(isbegin):
                                                data.dmesg[phase]['start'] = t.time
                                        continue

                                # is this trace event outside of the devices calls
                                if(data.isTraceEventOutsideDeviceCalls(pid, t.time)):
                                        # global events (outside device calls) are simply graphed
                                        if(name not in testrun.ttemp):
                                                testrun.ttemp[name] = []
                                        if(isbegin):
                                                # create a new list entry
                                                testrun.ttemp[name].append(\
                                                        {'begin': t.time, 'end': t.time})
                                        else:
                                                if(len(testrun.ttemp[name]) > 0):
                                                        # if an antry exists, assume this is its end
                                                        testrun.ttemp[name][-1]['end'] = t.time
                                                elif(phase == 'post_resume'):
                                                        # post resume events can just have ends
                                                        testrun.ttemp[name].append({
                                                                'begin': data.dmesg[phase]['start'],
                                                                'end': t.time})
                                else:
                                        if(isbegin):
                                                data.addIntraDevTraceEvent('', name, pid, t.time)
                                        else:
                                                data.capIntraDevTraceEvent('', name, pid, t.time)
                        # device callback start
                        elif(t.type == 'device_pm_callback_start'):
                                m = re.match('(?P<drv>.*) (?P<d>.*), parent: *(?P<p>.*), .*',\
                                        t.name);
                                if(not m):
                                        continue
                                drv = m.group('drv')
                                n = m.group('d')
                                p = m.group('p')
                                if(n and p):
                                        data.newAction(phase, n, pid, p, t.time, -1, drv)
                        # device callback finish
                        elif(t.type == 'device_pm_callback_end'):
                                m = re.match('(?P<drv>.*) (?P<d>.*), err.*', t.name);
                                if(not m):
                                        continue
                                n = m.group('d')
                                list = data.dmesg[phase]['list']
                                if(n in list):
                                        dev = list[n]
                                        dev['length'] = t.time - dev['start']
                                        dev['end'] = t.time
                # callgraph processing
                elif sysvals.usecallgraph:
                        # this shouldn't happen, but JIC, ignore callgraph data post-res
                        if(phase == 'post_resume'):
                                continue
                        # create a callgraph object for the data
                        if(pid not in testrun.ftemp):
                                testrun.ftemp[pid] = []
                                testrun.ftemp[pid].append(FTraceCallGraph())
                        # when the call is finished, see which device matches it
                        cg = testrun.ftemp[pid][-1]
                        if(cg.addLine(t, m)):
                                testrun.ftemp[pid].append(FTraceCallGraph())
        tf.close()

        for test in testruns:
                # add the traceevent data to the device hierarchy
                if(sysvals.usetraceevents):
                        for name in test.ttemp:
                                for event in test.ttemp[name]:
                                        begin = event['begin']
                                        end = event['end']
                                        # if event starts before timeline start, expand timeline
                                        if(begin < test.data.start):
                                                test.data.setStart(begin)
                                        # if event ends after timeline end, expand the timeline
                                        if(end > test.data.end):
                                                test.data.setEnd(end)
                                        test.data.newActionGlobal(name, begin, end)

                # add the callgraph data to the device hierarchy
                borderphase = {
                        'dpm_prepare': 'suspend_prepare',
                        'dpm_complete': 'resume_complete'
                }
                for pid in test.ftemp:
                        for cg in test.ftemp[pid]:
                                if len(cg.list) < 2:
                                        continue
                                if(not cg.sanityCheck()):
                                        id = 'task %s cpu %s' % (pid, m.group('cpu'))
                                        vprint('Sanity check failed for '+\
                                                id+', ignoring this callback')
                                        continue
                                callstart = cg.start
                                callend = cg.end
                                if(cg.list[0].name in borderphase):
                                        p = borderphase[cg.list[0].name]
                                        list = test.data.dmesg[p]['list']
                                        for devname in list:
                                                dev = list[devname]
                                                if(pid == dev['pid'] and
                                                        callstart <= dev['start'] and
                                                        callend >= dev['end']):
                                                        dev['ftrace'] = cg.slice(dev['start'], dev['end'])
                                        continue
                                if(cg.list[0].name != 'dpm_run_callback'):
                                        continue
                                for p in test.data.phases:
                                        if(test.data.dmesg[p]['start'] <= callstart and
                                                callstart <= test.data.dmesg[p]['end']):
                                                list = test.data.dmesg[p]['list']
                                                for devname in list:
                                                        dev = list[devname]
                                                        if(pid == dev['pid'] and
                                                                callstart <= dev['start'] and
                                                                callend >= dev['end']):
                                                                dev['ftrace'] = cg
                                                break

        # fill in any missing phases
        for data in testdata:
                lp = data.phases[0]
                for p in data.phases:
                        if(data.dmesg[p]['start'] < 0 and data.dmesg[p]['end'] < 0):
                                print('WARNING: phase "%s" is missing!' % p)
                        if(data.dmesg[p]['start'] < 0):
                                data.dmesg[p]['start'] = data.dmesg[lp]['end']
                                if(p == 'resume_machine'):
                                        data.tSuspended = data.dmesg[lp]['end']
                                        data.tResumed = data.dmesg[lp]['end']
                                        data.tLow = 0
                        if(data.dmesg[p]['end'] < 0):
                                data.dmesg[p]['end'] = data.dmesg[p]['start']
                        lp = p

                if(len(sysvals.devicefilter) > 0):
                        data.deviceFilter(sysvals.devicefilter)
                data.fixupInitcallsThatDidntReturn()
                if(sysvals.verbose):
                        data.printDetails()

        # add the time in between the tests as a new phase so we can see it
        if(len(testdata) > 1):
                t1e = testdata[0].getEnd()
                t2s = testdata[-1].getStart()
                testdata[-1].newPhaseWithSingleAction('user mode', \
                        'user mode', t1e, t2s, '#FF9966')
        return testdata

# Function: loadKernelLog
# Description:
#        [deprecated for kernel 3.15.0 or newer]
#        load the dmesg file into memory and fix up any ordering issues
#        The dmesg filename is taken from sysvals
# Output:
#        An array of empty Data objects with only their dmesgtext attributes set
def loadKernelLog():
        global sysvals

        vprint('Analyzing the dmesg data...')
        if(os.path.exists(sysvals.dmesgfile) == False):
                doError('%s doesnt exist' % sysvals.dmesgfile, False)

        # there can be multiple test runs in a single file delineated by stamps
        testruns = []
        data = 0
        lf = open(sysvals.dmesgfile, 'r')
        for line in lf:
                line = line.replace('\r\n', '')
                idx = line.find('[')
                if idx > 1:
                        line = line[idx:]
                m = re.match(sysvals.stampfmt, line)
                if(m):
                        if(data):
                                testruns.append(data)
                        data = Data(len(testruns))
                        parseStamp(m, data)
                        continue
                if(not data):
                        continue
                m = re.match(sysvals.firmwarefmt, line)
                if(m):
                        data.fwSuspend = int(m.group('s'))
                        data.fwResume = int(m.group('r'))
                        if(data.fwSuspend > 0 or data.fwResume > 0):
                                data.fwValid = True
                        continue
                m = re.match('[ \t]*(\[ *)(?P<ktime>[0-9\.]*)(\]) (?P<msg>.*)', line)
                if(m):
                        data.dmesgtext.append(line)
                        if(re.match('ACPI: resume from mwait', m.group('msg'))):
                                print('NOTE: This suspend appears to be freeze rather than'+\
                                        ' %s, it will be treated as such' % sysvals.suspendmode)
                                sysvals.suspendmode = 'freeze'
                else:
                        vprint('ignoring dmesg line: %s' % line.replace('\n', ''))
        testruns.append(data)
        lf.close()

        if(not data):
                print('ERROR: analyze_suspend header missing from dmesg log')
                sys.exit()

        # fix lines with same timestamp/function with the call and return swapped
        for data in testruns:
                last = ''
                for line in data.dmesgtext:
                        mc = re.match('.*(\[ *)(?P<t>[0-9\.]*)(\]) calling  '+\
                                '(?P<f>.*)\+ @ .*, parent: .*', line)
                        mr = re.match('.*(\[ *)(?P<t>[0-9\.]*)(\]) call '+\
                                '(?P<f>.*)\+ returned .* after (?P<dt>.*) usecs', last)
                        if(mc and mr and (mc.group('t') == mr.group('t')) and
                                (mc.group('f') == mr.group('f'))):
                                i = data.dmesgtext.index(last)
                                j = data.dmesgtext.index(line)
                                data.dmesgtext[i] = line
                                data.dmesgtext[j] = last
                        last = line
        return testruns

# Function: parseKernelLog
# Description:
#        [deprecated for kernel 3.15.0 or newer]
#        Analyse a dmesg log output file generated from this app during
#        the execution phase. Create a set of device structures in memory
#        for subsequent formatting in the html output file
#        This call is only for legacy support on kernels where the ftrace
#        data lacks the suspend_resume or device_pm_callbacks trace events.
# Arguments:
#        data: an empty Data object (with dmesgtext) obtained from loadKernelLog
# Output:
#        The filled Data object
def parseKernelLog(data):
        global sysvals

        phase = 'suspend_runtime'

        if(data.fwValid):
                vprint('Firmware Suspend = %u ns, Firmware Resume = %u ns' % \
                        (data.fwSuspend, data.fwResume))

        # dmesg phase match table
        dm = {
                'suspend_prepare': 'PM: Syncing filesystems.*',
                        'suspend': 'PM: Entering [a-z]* sleep.*',
                   'suspend_late': 'PM: suspend of devices complete after.*',
                  'suspend_noirq': 'PM: late suspend of devices complete after.*',
                'suspend_machine': 'PM: noirq suspend of devices complete after.*',
                 'resume_machine': 'ACPI: Low-level resume complete.*',
                   'resume_noirq': 'ACPI: Waking up from system sleep state.*',
                   'resume_early': 'PM: noirq resume of devices complete after.*',
                         'resume': 'PM: early resume of devices complete after.*',
                'resume_complete': 'PM: resume of devices complete after.*',
                    'post_resume': '.*Restarting tasks \.\.\..*',
        }
        if(sysvals.suspendmode == 'standby'):
                dm['resume_machine'] = 'PM: Restoring platform NVS memory'
        elif(sysvals.suspendmode == 'disk'):
                dm['suspend_late'] = 'PM: freeze of devices complete after.*'
                dm['suspend_noirq'] = 'PM: late freeze of devices complete after.*'
                dm['suspend_machine'] = 'PM: noirq freeze of devices complete after.*'
                dm['resume_machine'] = 'PM: Restoring platform NVS memory'
                dm['resume_early'] = 'PM: noirq restore of devices complete after.*'
                dm['resume'] = 'PM: early restore of devices complete after.*'
                dm['resume_complete'] = 'PM: restore of devices complete after.*'
        elif(sysvals.suspendmode == 'freeze'):
                dm['resume_machine'] = 'ACPI: resume from mwait'

        # action table (expected events that occur and show up in dmesg)
        at = {
                'sync_filesystems': {
                        'smsg': 'PM: Syncing filesystems.*',
                        'emsg': 'PM: Preparing system for mem sleep.*' },
                'freeze_user_processes': {
                        'smsg': 'Freezing user space processes .*',
                        'emsg': 'Freezing remaining freezable tasks.*' },
                'freeze_tasks': {
                        'smsg': 'Freezing remaining freezable tasks.*',
                        'emsg': 'PM: Entering (?P<mode>[a-z,A-Z]*) sleep.*' },
                'ACPI prepare': {
                        'smsg': 'ACPI: Preparing to enter system sleep state.*',
                        'emsg': 'PM: Saving platform NVS memory.*' },
                'PM vns': {
                        'smsg': 'PM: Saving platform NVS memory.*',
                        'emsg': 'Disabling non-boot CPUs .*' },
        }

        t0 = -1.0
        cpu_start = -1.0
        prevktime = -1.0
        actions = dict()
        for line in data.dmesgtext:
                # -- preprocessing --
                # parse each dmesg line into the time and message
                m = re.match('[ \t]*(\[ *)(?P<ktime>[0-9\.]*)(\]) (?P<msg>.*)', line)
                if(m):
                        val = m.group('ktime')
                        try:
                                ktime = float(val)
                        except:
                                doWarning('INVALID DMESG LINE: '+\
                                        line.replace('\n', ''), 'dmesg')
                                continue
                        msg = m.group('msg')
                        # initialize data start to first line time
                        if t0 < 0:
                                data.setStart(ktime)
                                t0 = ktime
                else:
                        continue

                # hack for determining resume_machine end for freeze
                if(not sysvals.usetraceevents and sysvals.suspendmode == 'freeze' \
                        and phase == 'resume_machine' and \
                        re.match('calling  (?P<f>.*)\+ @ .*, parent: .*', msg)):
                        data.dmesg['resume_machine']['end'] = ktime
                        phase = 'resume_noirq'
                        data.dmesg[phase]['start'] = ktime

                # -- phase changes --
                # suspend start
                if(re.match(dm['suspend_prepare'], msg)):
                        phase = 'suspend_prepare'
                        data.dmesg[phase]['start'] = ktime
                        data.setStart(ktime)
                # suspend start
                elif(re.match(dm['suspend'], msg)):
                        data.dmesg['suspend_prepare']['end'] = ktime
                        phase = 'suspend'
                        data.dmesg[phase]['start'] = ktime
                # suspend_late start
                elif(re.match(dm['suspend_late'], msg)):
                        data.dmesg['suspend']['end'] = ktime
                        phase = 'suspend_late'
                        data.dmesg[phase]['start'] = ktime
                # suspend_noirq start
                elif(re.match(dm['suspend_noirq'], msg)):
                        data.dmesg['suspend_late']['end'] = ktime
                        phase = 'suspend_noirq'
                        data.dmesg[phase]['start'] = ktime
                # suspend_machine start
                elif(re.match(dm['suspend_machine'], msg)):
                        data.dmesg['suspend_noirq']['end'] = ktime
                        phase = 'suspend_machine'
                        data.dmesg[phase]['start'] = ktime
                # resume_machine start
                elif(re.match(dm['resume_machine'], msg)):
                        if(sysvals.suspendmode in ['freeze', 'standby']):
                                data.tSuspended = prevktime
                                data.dmesg['suspend_machine']['end'] = prevktime
                        else:
                                data.tSuspended = ktime
                                data.dmesg['suspend_machine']['end'] = ktime
                        phase = 'resume_machine'
                        data.tResumed = ktime
                        data.tLow = data.tResumed - data.tSuspended
                        data.dmesg[phase]['start'] = ktime
                # resume_noirq start
                elif(re.match(dm['resume_noirq'], msg)):
                        data.dmesg['resume_machine']['end'] = ktime
                        phase = 'resume_noirq'
                        data.dmesg[phase]['start'] = ktime
                # resume_early start
                elif(re.match(dm['resume_early'], msg)):
                        data.dmesg['resume_noirq']['end'] = ktime
                        phase = 'resume_early'
                        data.dmesg[phase]['start'] = ktime
                # resume start
                elif(re.match(dm['resume'], msg)):
                        data.dmesg['resume_early']['end'] = ktime
                        phase = 'resume'
                        data.dmesg[phase]['start'] = ktime
                # resume complete start
                elif(re.match(dm['resume_complete'], msg)):
                        data.dmesg['resume']['end'] = ktime
                        phase = 'resume_complete'
                        data.dmesg[phase]['start'] = ktime
                # post resume start
                elif(re.match(dm['post_resume'], msg)):
                        data.dmesg['resume_complete']['end'] = ktime
                        data.setEnd(ktime)
                        phase = 'post_resume'
                        break

                # -- device callbacks --
                if(phase in data.phases):
                        # device init call
                        if(re.match('calling  (?P<f>.*)\+ @ .*, parent: .*', msg)):
                                sm = re.match('calling  (?P<f>.*)\+ @ '+\
                                        '(?P<n>.*), parent: (?P<p>.*)', msg);
                                f = sm.group('f')
                                n = sm.group('n')
                                p = sm.group('p')
                                if(f and n and p):
                                        data.newAction(phase, f, int(n), p, ktime, -1, '')
                        # device init return
                        elif(re.match('call (?P<f>.*)\+ returned .* after '+\
                                '(?P<t>.*) usecs', msg)):
                                sm = re.match('call (?P<f>.*)\+ returned .* after '+\
                                        '(?P<t>.*) usecs(?P<a>.*)', msg);
                                f = sm.group('f')
                                t = sm.group('t')
                                list = data.dmesg[phase]['list']
                                if(f in list):
                                        dev = list[f]
                                        dev['length'] = int(t)
                                        dev['end'] = ktime

                # -- non-devicecallback actions --
                # if trace events are not available, these are better than nothing
                if(not sysvals.usetraceevents):
                        # look for known actions
                        for a in at:
                                if(re.match(at[a]['smsg'], msg)):
                                        if(a not in actions):
                                                actions[a] = []
                                        actions[a].append({'begin': ktime, 'end': ktime})
                                if(re.match(at[a]['emsg'], msg)):
                                        actions[a][-1]['end'] = ktime
                        # now look for CPU on/off events
                        if(re.match('Disabling non-boot CPUs .*', msg)):
                                # start of first cpu suspend
                                cpu_start = ktime
                        elif(re.match('Enabling non-boot CPUs .*', msg)):
                                # start of first cpu resume
                                cpu_start = ktime
                        elif(re.match('smpboot: CPU (?P<cpu>[0-9]*) is now offline', msg)):
                                # end of a cpu suspend, start of the next
                                m = re.match('smpboot: CPU (?P<cpu>[0-9]*) is now offline', msg)
                                cpu = 'CPU'+m.group('cpu')
                                if(cpu not in actions):
                                        actions[cpu] = []
                                actions[cpu].append({'begin': cpu_start, 'end': ktime})
                                cpu_start = ktime
                        elif(re.match('CPU(?P<cpu>[0-9]*) is up', msg)):
                                # end of a cpu resume, start of the next
                                m = re.match('CPU(?P<cpu>[0-9]*) is up', msg)
                                cpu = 'CPU'+m.group('cpu')
                                if(cpu not in actions):
                                        actions[cpu] = []
                                actions[cpu].append({'begin': cpu_start, 'end': ktime})
                                cpu_start = ktime
                prevktime = ktime

        # fill in any missing phases
        lp = data.phases[0]
        for p in data.phases:
                if(data.dmesg[p]['start'] < 0 and data.dmesg[p]['end'] < 0):
                        print('WARNING: phase "%s" is missing, something went wrong!' % p)
                        print('    In %s, this dmesg line denotes the start of %s:' % \
                                (sysvals.suspendmode, p))
                        print('        "%s"' % dm[p])
                if(data.dmesg[p]['start'] < 0):
                        data.dmesg[p]['start'] = data.dmesg[lp]['end']
                        if(p == 'resume_machine'):
                                data.tSuspended = data.dmesg[lp]['end']
                                data.tResumed = data.dmesg[lp]['end']
                                data.tLow = 0
                if(data.dmesg[p]['end'] < 0):
                        data.dmesg[p]['end'] = data.dmesg[p]['start']
                lp = p

        # fill in any actions we've found
        for name in actions:
                for event in actions[name]:
                        begin = event['begin']
                        end = event['end']
                        # if event starts before timeline start, expand timeline
                        if(begin < data.start):
                                data.setStart(begin)
                        # if event ends after timeline end, expand the timeline
                        if(end > data.end):
                                data.setEnd(end)
                        data.newActionGlobal(name, begin, end)

        if(sysvals.verbose):
                data.printDetails()
        if(len(sysvals.devicefilter) > 0):
                data.deviceFilter(sysvals.devicefilter)
        data.fixupInitcallsThatDidntReturn()
        return True

# Function: setTimelineRows
# Description:
#        Organize the timeline entries into the smallest
#        number of rows possible, with no entry overlapping
# Arguments:
#        list: the list of devices/actions for a single phase
#        sortedkeys: cronologically sorted key list to use
# Output:
#        The total number of rows needed to display this phase of the timeline
def setTimelineRows(list, sortedkeys):

        # clear all rows and set them to undefined
        remaining = len(list)
        rowdata = dict()
        row = 0
        for item in list:
                list[item]['row'] = -1

        # try to pack each row with as many ranges as possible
        while(remaining > 0):
                if(row not in rowdata):
                        rowdata[row] = []
                for item in sortedkeys:
                        if(list[item]['row'] < 0):
                                s = list[item]['start']
                                e = list[item]['end']
                                valid = True
                                for ritem in rowdata[row]:
                                        rs = ritem['start']
                                        re = ritem['end']
                                        if(not (((s <= rs) and (e <= rs)) or
                                                ((s >= re) and (e >= re)))):
                                                valid = False
                                                break
                                if(valid):
                                        rowdata[row].append(list[item])
                                        list[item]['row'] = row
                                        remaining -= 1
                row += 1
        return row

# Function: createTimeScale
# Description:
#        Create the timescale header for the html timeline
# Arguments:
#        t0: start time (suspend begin)
#        tMax: end time (resume end)
#        tSuspend: time when suspend occurs, i.e. the zero time
# Output:
#        The html code needed to display the time scale
def createTimeScale(t0, tMax, tSuspended):
        timescale = '<div class="t" style="right:{0}%">{1}</div>\n'
        output = '<div id="timescale">\n'

        # set scale for timeline
        tTotal = tMax - t0
        tS = 0.1
        if(tTotal <= 0):
                return output
        if(tTotal > 4):
                tS = 1
        if(tSuspended < 0):
                for i in range(int(tTotal/tS)+1):
                        pos = '%0.3f' % (100 - ((float(i)*tS*100)/tTotal))
                        if(i > 0):
                                val = '%0.fms' % (float(i)*tS*1000)
                        else:
                                val = ''
                        output += timescale.format(pos, val)
        else:
                tSuspend = tSuspended - t0
                divTotal = int(tTotal/tS) + 1
                divSuspend = int(tSuspend/tS)
                s0 = (tSuspend - tS*divSuspend)*100/tTotal
                for i in range(divTotal):
                        pos = '%0.3f' % (100 - ((float(i)*tS*100)/tTotal) - s0)
                        if((i == 0) and (s0 < 3)):
                                val = ''
                        elif(i == divSuspend):
                                val = 'S/R'
                        else:
                                val = '%0.fms' % (float(i-divSuspend)*tS*1000)
                        output += timescale.format(pos, val)
        output += '</div>\n'
        return output

# Function: createHTMLSummarySimple
# Description:
#        Create summary html file for a series of tests
# Arguments:
#        testruns: array of Data objects from parseTraceLog
def createHTMLSummarySimple(testruns, htmlfile):
        global sysvals

        # print out the basic summary of all the tests
        hf = open(htmlfile, 'w')

        # write the html header first (html head, css code, up to body start)
        html = '<!DOCTYPE html>\n<html>\n<head>\n\
        <meta http-equiv="content-type" content="text/html; charset=UTF-8">\n\
        <title>AnalyzeSuspend Summary</title>\n\
        <style type=\'text/css\'>\n\
                body {overflow-y: scroll;}\n\
                .stamp {width: 100%;text-align:center;background-color:#495E09;line-height:30px;color:white;font: 25px Arial;}\n\
                table {width:100%;border-collapse: collapse;}\n\
                .summary {font: 22px Arial;border:1px solid;}\n\
                th {border: 1px solid black;background-color:#A7C942;color:white;}\n\
                td {text-align: center;}\n\
                tr.alt td {background-color:#EAF2D3;}\n\
                tr.avg td {background-color:#BDE34C;}\n\
                a:link {color: #90B521;}\n\
                a:visited {color: #495E09;}\n\
                a:hover {color: #B1DF28;}\n\
                a:active {color: #FFFFFF;}\n\
        </style>\n</head>\n<body>\n'

        # group test header
        count = len(testruns)
        headline_stamp = '<div class="stamp">{0} {1} {2} {3} ({4} tests)</div>\n'
        html += headline_stamp.format(sysvals.stamp['host'],
                sysvals.stamp['kernel'], sysvals.stamp['mode'],
                sysvals.stamp['time'], count)

        # check to see if all the tests have the same value
        stampcolumns = False
        for data in testruns:
                if diffStamp(sysvals.stamp, data.stamp):
                        stampcolumns = True
                        break

        th = '\t<th>{0}</th>\n'
        td = '\t<td>{0}</td>\n'
        tdlink = '\t<td><a href="{0}">Click Here</a></td>\n'

        # table header
        html += '<table class="summary">\n<tr>\n'
        html += th.format("Test #")
        if stampcolumns:
                html += th.format("Hostname")
                html += th.format("Kernel Version")
                html += th.format("Suspend Mode")
        html += th.format("Test Time")
        html += th.format("Suspend Time")
        html += th.format("Resume Time")
        html += th.format("Detail")
        html += '</tr>\n'

        # test data, 1 row per test
        sTimeAvg = 0.0
        rTimeAvg = 0.0
        num = 1
        for data in testruns:
                # data.end is the end of post_resume
                resumeEnd = data.dmesg['resume_complete']['end']
                if num % 2 == 1:
                        html += '<tr class="alt">\n'
                else:
                        html += '<tr>\n'

                # test num
                html += td.format("test %d" % num)
                num += 1
                if stampcolumns:
                        # host name
                        val = "unknown"
                        if('host' in data.stamp):
                                val = data.stamp['host']
                        html += td.format(val)
                        # host kernel
                        val = "unknown"
                        if('kernel' in data.stamp):
                                val = data.stamp['kernel']
                        html += td.format(val)
                        # suspend mode
                        val = "unknown"
                        if('mode' in data.stamp):
                                val = data.stamp['mode']
                        html += td.format(val)
                # test time
                val = "unknown"
                if('time' in data.stamp):
                        val = data.stamp['time']
                html += td.format(val)
                # suspend time
                sTime = (data.tSuspended - data.start)*1000
                sTimeAvg += sTime
                html += td.format("%3.3f ms" % sTime)
                # resume time
                rTime = (resumeEnd - data.tResumed)*1000
                rTimeAvg += rTime
                html += td.format("%3.3f ms" % rTime)
                # link to the output html
                html += tdlink.format(data.outfile)

                html += '</tr>\n'

        # last line: test average
        if(count > 0):
                sTimeAvg /= count
                rTimeAvg /= count
        html += '<tr class="avg">\n'
        html += td.format('Average')    # name
        if stampcolumns:
                html += td.format('')                   # host
                html += td.format('')                   # kernel
                html += td.format('')                   # mode
        html += td.format('')                   # time
        html += td.format("%3.3f ms" % sTimeAvg)        # suspend time
        html += td.format("%3.3f ms" % rTimeAvg)        # resume time
        html += td.format('')                   # output link
        html += '</tr>\n'

        # flush the data to file
        hf.write(html+'</table>\n')
        hf.write('</body>\n</html>\n')
        hf.close()

# Function: createHTML
# Description:
#        Create the output html file from the resident test data
# Arguments:
#        testruns: array of Data objects from parseKernelLog or parseTraceLog
# Output:
#        True if the html file was created, false if it failed
def createHTML(testruns):
        global sysvals

        for data in testruns:
                data.normalizeTime(testruns[-1].tSuspended)

        x2changes = ['', 'absolute']
        if len(testruns) > 1:
                x2changes = ['1', 'relative']
        # html function templates
        headline_stamp = '<div class="stamp">{0} {1} {2} {3}</div>\n'
        html_devlist1 = '<button id="devlist1" class="devlist" style="float:left;">Device Detail%s</button>' % x2changes[0]
        html_zoombox = '<center><button id="zoomin">ZOOM IN</button><button id="zoomout">ZOOM OUT</button><button id="zoomdef">ZOOM 1:1</button></center>\n'
        html_devlist2 = '<button id="devlist2" class="devlist" style="float:right;">Device Detail2</button>\n'
        html_timeline = '<div id="dmesgzoombox" class="zoombox">\n<div id="{0}" class="timeline" style="height:{1}px">\n'
        html_device = '<div id="{0}" title="{1}" class="thread" style="left:{2}%;top:{3}%;height:{4}%;width:{5}%;">{6}</div>\n'
        html_traceevent = '<div title="{0}" class="traceevent" style="left:{1}%;top:{2}%;height:{3}%;width:{4}%;border:1px solid {5};background-color:{5}">{6}</div>\n'
        html_phase = '<div class="phase" style="left:{0}%;width:{1}%;top:{2}%;height:{3}%;background-color:{4}">{5}</div>\n'
        html_phaselet = '<div id="{0}" class="phaselet" style="left:{1}%;width:{2}%;background-color:{3}"></div>\n'
        html_legend = '<div class="square" style="left:{0}%;background-color:{1}">&nbsp;{2}</div>\n'
        html_timetotal = '<table class="time1">\n<tr>'\
                '<td class="green">{2} Suspend Time: <b>{0} ms</b></td>'\
                '<td class="yellow">{2} Resume Time: <b>{1} ms</b></td>'\
                '</tr>\n</table>\n'
        html_timetotal2 = '<table class="time1">\n<tr>'\
                '<td class="green">{3} Suspend Time: <b>{0} ms</b></td>'\
                '<td class="gray">'+sysvals.suspendmode+' time: <b>{1} ms</b></td>'\
                '<td class="yellow">{3} Resume Time: <b>{2} ms</b></td>'\
                '</tr>\n</table>\n'
        html_timegroups = '<table class="time2">\n<tr>'\
                '<td class="green">{4}Kernel Suspend: {0} ms</td>'\
                '<td class="purple">{4}Firmware Suspend: {1} ms</td>'\
                '<td class="purple">{4}Firmware Resume: {2} ms</td>'\
                '<td class="yellow">{4}Kernel Resume: {3} ms</td>'\
                '</tr>\n</table>\n'

        # device timeline
        vprint('Creating Device Timeline...')
        devtl = Timeline()

        # Generate the header for this timeline
        textnum = ['First', 'Second']
        for data in testruns:
                tTotal = data.end - data.start
                tEnd = data.dmesg['resume_complete']['end']
                if(tTotal == 0):
                        print('ERROR: No timeline data')
                        sys.exit()
                if(data.tLow > 0):
                        low_time = '%.0f'%(data.tLow*1000)
                if data.fwValid:
                        suspend_time = '%.0f'%((data.tSuspended-data.start)*1000 + \
                                (data.fwSuspend/1000000.0))
                        resume_time = '%.0f'%((tEnd-data.tSuspended)*1000 + \
                                (data.fwResume/1000000.0))
                        testdesc1 = 'Total'
                        testdesc2 = ''
                        if(len(testruns) > 1):
                                testdesc1 = testdesc2 = textnum[data.testnumber]
                                testdesc2 += ' '
                        if(data.tLow == 0):
                                thtml = html_timetotal.format(suspend_time, \
                                        resume_time, testdesc1)
                        else:
                                thtml = html_timetotal2.format(suspend_time, low_time, \
                                        resume_time, testdesc1)
                        devtl.html['timeline'] += thtml
                        sktime = '%.3f'%((data.dmesg['suspend_machine']['end'] - \
                                data.getStart())*1000)
                        sftime = '%.3f'%(data.fwSuspend / 1000000.0)
                        rftime = '%.3f'%(data.fwResume / 1000000.0)
                        rktime = '%.3f'%((data.getEnd() - \
                                data.dmesg['resume_machine']['start'])*1000)
                        devtl.html['timeline'] += html_timegroups.format(sktime, \
                                sftime, rftime, rktime, testdesc2)
                else:
                        suspend_time = '%.0f'%((data.tSuspended-data.start)*1000)
                        resume_time = '%.0f'%((tEnd-data.tSuspended)*1000)
                        testdesc = 'Kernel'
                        if(len(testruns) > 1):
                                testdesc = textnum[data.testnumber]+' '+testdesc
                        if(data.tLow == 0):
                                thtml = html_timetotal.format(suspend_time, \
                                        resume_time, testdesc)
                        else:
                                thtml = html_timetotal2.format(suspend_time, low_time, \
                                        resume_time, testdesc)
                        devtl.html['timeline'] += thtml

        # time scale for potentially multiple datasets
        t0 = testruns[0].start
        tMax = testruns[-1].end
        tSuspended = testruns[-1].tSuspended
        tTotal = tMax - t0

        # determine the maximum number of rows we need to draw
        timelinerows = 0
        for data in testruns:
                for phase in data.dmesg:
                        list = data.dmesg[phase]['list']
                        rows = setTimelineRows(list, list)
                        data.dmesg[phase]['row'] = rows
                        if(rows > timelinerows):
                                timelinerows = rows

        # calculate the timeline height and create bounding box, add buttons
        devtl.setRows(timelinerows + 1)
        devtl.html['timeline'] += html_devlist1
        if len(testruns) > 1:
                devtl.html['timeline'] += html_devlist2
        devtl.html['timeline'] += html_zoombox
        devtl.html['timeline'] += html_timeline.format('dmesg', devtl.height)

        # draw the colored boxes for each of the phases
        for data in testruns:
                for b in data.dmesg:
                        phase = data.dmesg[b]
                        length = phase['end']-phase['start']
                        left = '%.3f' % (((phase['start']-t0)*100.0)/tTotal)
                        width = '%.3f' % ((length*100.0)/tTotal)
                        devtl.html['timeline'] += html_phase.format(left, width, \
                                '%.3f'%devtl.scaleH, '%.3f'%(100-devtl.scaleH), \
                                data.dmesg[b]['color'], '')

        # draw the time scale, try to make the number of labels readable
        devtl.html['scale'] = createTimeScale(t0, tMax, tSuspended)
        devtl.html['timeline'] += devtl.html['scale']
        for data in testruns:
                for b in data.dmesg:
                        phaselist = data.dmesg[b]['list']
                        for d in phaselist:
                                name = d
                                drv = ''
                                dev = phaselist[d]
                                if(d in sysvals.altdevname):
                                        name = sysvals.altdevname[d]
                                if('drv' in dev and dev['drv']):
                                        drv = ' {%s}' % dev['drv']
                                height = (100.0 - devtl.scaleH)/data.dmesg[b]['row']
                                top = '%.3f' % ((dev['row']*height) + devtl.scaleH)
                                left = '%.3f' % (((dev['start']-t0)*100)/tTotal)
                                width = '%.3f' % (((dev['end']-dev['start'])*100)/tTotal)
                                length = ' (%0.3f ms) ' % ((dev['end']-dev['start'])*1000)
                                color = 'rgba(204,204,204,0.5)'
                                devtl.html['timeline'] += html_device.format(dev['id'], \
                                        d+drv+length+b, left, top, '%.3f'%height, width, name+drv)

        # draw any trace events found
        for data in testruns:
                for b in data.dmesg:
                        phaselist = data.dmesg[b]['list']
                        for name in phaselist:
                                dev = phaselist[name]
                                if('traceevents' in dev):
                                        vprint('Debug trace events found for device %s' % name)
                                        vprint('%20s %20s %10s %8s' % ('action', \
                                                'name', 'time(ms)', 'length(ms)'))
                                        for e in dev['traceevents']:
                                                vprint('%20s %20s %10.3f %8.3f' % (e.action, \
                                                        e.name, e.time*1000, e.length*1000))
                                                height = (100.0 - devtl.scaleH)/data.dmesg[b]['row']
                                                top = '%.3f' % ((dev['row']*height) + devtl.scaleH)
                                                left = '%.3f' % (((e.time-t0)*100)/tTotal)
                                                width = '%.3f' % (e.length*100/tTotal)
                                                color = 'rgba(204,204,204,0.5)'
                                                devtl.html['timeline'] += \
                                                        html_traceevent.format(e.action+' '+e.name, \
                                                                left, top, '%.3f'%height, \
                                                                width, e.color, '')

        # timeline is finished
        devtl.html['timeline'] += '</div>\n</div>\n'

        # draw a legend which describes the phases by color
        data = testruns[-1]
        devtl.html['legend'] = '<div class="legend">\n'
        pdelta = 100.0/len(data.phases)
        pmargin = pdelta / 4.0
        for phase in data.phases:
                order = '%.2f' % ((data.dmesg[phase]['order'] * pdelta) + pmargin)
                name = string.replace(phase, '_', ' &nbsp;')
                devtl.html['legend'] += html_legend.format(order, \
                        data.dmesg[phase]['color'], name)
        devtl.html['legend'] += '</div>\n'

        hf = open(sysvals.htmlfile, 'w')
        thread_height = 0

        # write the html header first (html head, css code, up to body start)
        html_header = '<!DOCTYPE html>\n<html>\n<head>\n\
        <meta http-equiv="content-type" content="text/html; charset=UTF-8">\n\
        <title>AnalyzeSuspend</title>\n\
        <style type=\'text/css\'>\n\
                body {overflow-y: scroll;}\n\
                .stamp {width: 100%;text-align:center;background-color:gray;line-height:30px;color:white;font: 25px Arial;}\n\
                .callgraph {margin-top: 30px;box-shadow: 5px 5px 20px black;}\n\
                .callgraph article * {padding-left: 28px;}\n\
                h1 {color:black;font: bold 30px Times;}\n\
                t0 {color:black;font: bold 30px Times;}\n\
                t1 {color:black;font: 30px Times;}\n\
                t2 {color:black;font: 25px Times;}\n\
                t3 {color:black;font: 20px Times;white-space:nowrap;}\n\
                t4 {color:black;font: bold 30px Times;line-height:60px;white-space:nowrap;}\n\
                table {width:100%;}\n\
                .gray {background-color:rgba(80,80,80,0.1);}\n\
                .green {background-color:rgba(204,255,204,0.4);}\n\
                .purple {background-color:rgba(128,0,128,0.2);}\n\
                .yellow {background-color:rgba(255,255,204,0.4);}\n\
                .time1 {font: 22px Arial;border:1px solid;}\n\
                .time2 {font: 15px Arial;border-bottom:1px solid;border-left:1px solid;border-right:1px solid;}\n\
                td {text-align: center;}\n\
                r {color:#500000;font:15px Tahoma;}\n\
                n {color:#505050;font:15px Tahoma;}\n\
                .tdhl {color: red;}\n\
                .hide {display: none;}\n\
                .pf {display: none;}\n\
                .pf:checked + label {background: url(\'data:image/svg+xml;utf,<?xml version="1.0" standalone="no"?><svg xmlns="http://www.w3.org/2000/svg" height="18" width="18" version="1.1"><circle cx="9" cy="9" r="8" stroke="black" stroke-width="1" fill="white"/><rect x="4" y="8" width="10" height="2" style="fill:black;stroke-width:0"/><rect x="8" y="4" width="2" height="10" style="fill:black;stroke-width:0"/></svg>\') no-repeat left center;}\n\
                .pf:not(:checked) ~ label {background: url(\'data:image/svg+xml;utf,<?xml version="1.0" standalone="no"?><svg xmlns="http://www.w3.org/2000/svg" height="18" width="18" version="1.1"><circle cx="9" cy="9" r="8" stroke="black" stroke-width="1" fill="white"/><rect x="4" y="8" width="10" height="2" style="fill:black;stroke-width:0"/></svg>\') no-repeat left center;}\n\
                .pf:checked ~ *:not(:nth-child(2)) {display: none;}\n\
                .zoombox {position: relative; width: 100%; overflow-x: scroll;}\n\
                .timeline {position: relative; font-size: 14px;cursor: pointer;width: 100%; overflow: hidden; background-color:#dddddd;}\n\
                .thread {position: absolute; height: '+'%.3f'%thread_height+'%; overflow: hidden; line-height: 30px; border:1px solid;text-align:center;white-space:nowrap;background-color:rgba(204,204,204,0.5);}\n\
                .thread:hover {background-color:white;border:1px solid red;z-index:10;}\n\
                .hover {background-color:white;border:1px solid red;z-index:10;}\n\
                .traceevent {position: absolute;opacity: 0.3;height: '+'%.3f'%thread_height+'%;width:0;overflow:hidden;line-height:30px;text-align:center;white-space:nowrap;}\n\
                .phase {position: absolute;overflow: hidden;border:0px;text-align:center;}\n\
                .phaselet {position:absolute;overflow:hidden;border:0px;text-align:center;height:100px;font-size:24px;}\n\
                .t {position:absolute;top:0%;height:100%;border-right:1px solid black;}\n\
                .legend {position: relative; width: 100%; height: 40px; text-align: center;margin-bottom:20px}\n\
                .legend .square {position:absolute;top:10px; width: 0px;height: 20px;border:1px solid;padding-left:20px;}\n\
                button {height:40px;width:200px;margin-bottom:20px;margin-top:20px;font-size:24px;}\n\
                .devlist {position:'+x2changes[1]+';width:190px;}\n\
                #devicedetail {height:100px;box-shadow: 5px 5px 20px black;}\n\
        </style>\n</head>\n<body>\n'
        hf.write(html_header)

        # write the test title and general info header
        if(sysvals.stamp['time'] != ""):
                hf.write(headline_stamp.format(sysvals.stamp['host'],
                        sysvals.stamp['kernel'], sysvals.stamp['mode'], \
                                sysvals.stamp['time']))

        # write the device timeline
        hf.write(devtl.html['timeline'])
        hf.write(devtl.html['legend'])
        hf.write('<div id="devicedetailtitle"></div>\n')
        hf.write('<div id="devicedetail" style="display:none;">\n')
        # draw the colored boxes for the device detail section
        for data in testruns:
                hf.write('<div id="devicedetail%d">\n' % data.testnumber)
                for b in data.phases:
                        phase = data.dmesg[b]
                        length = phase['end']-phase['start']
                        left = '%.3f' % (((phase['start']-t0)*100.0)/tTotal)
                        width = '%.3f' % ((length*100.0)/tTotal)
                        hf.write(html_phaselet.format(b, left, width, \
                                data.dmesg[b]['color']))
                hf.write('</div>\n')
        hf.write('</div>\n')

        # write the ftrace data (callgraph)
        data = testruns[-1]
        if(sysvals.usecallgraph):
                hf.write('<section id="callgraphs" class="callgraph">\n')
                # write out the ftrace data converted to html
                html_func_top = '<article id="{0}" class="atop" style="background-color:{1}">\n<input type="checkbox" class="pf" id="f{2}" checked/><label for="f{2}">{3} {4}</label>\n'
                html_func_start = '<article>\n<input type="checkbox" class="pf" id="f{0}" checked/><label for="f{0}">{1} {2}</label>\n'
                html_func_end = '</article>\n'
                html_func_leaf = '<article>{0} {1}</article>\n'
                num = 0
                for p in data.phases:
                        list = data.dmesg[p]['list']
                        for devname in data.sortedDevices(p):
                                if('ftrace' not in list[devname]):
                                        continue
                                name = devname
                                if(devname in sysvals.altdevname):
                                        name = sysvals.altdevname[devname]
                                devid = list[devname]['id']
                                cg = list[devname]['ftrace']
                                flen = '<r>(%.3f ms @ %.3f to %.3f)</r>' % \
                                        ((cg.end - cg.start)*1000, cg.start*1000, cg.end*1000)
                                hf.write(html_func_top.format(devid, data.dmesg[p]['color'], \
                                        num, name+' '+p, flen))
                                num += 1
                                for line in cg.list:
                                        if(line.length < 0.000000001):
                                                flen = ''
                                        else:
                                                flen = '<n>(%.3f ms @ %.3f)</n>' % (line.length*1000, \
                                                        line.time*1000)
                                        if(line.freturn and line.fcall):
                                                hf.write(html_func_leaf.format(line.name, flen))
                                        elif(line.freturn):
                                                hf.write(html_func_end)
                                        else:
                                                hf.write(html_func_start.format(num, line.name, flen))
                                                num += 1
                                hf.write(html_func_end)
                hf.write('\n\n    </section>\n')
        # write the footer and close
        addScriptCode(hf, testruns)
        hf.write('</body>\n</html>\n')
        hf.close()
        return True

# Function: addScriptCode
# Description:
#        Adds the javascript code to the output html
# Arguments:
#        hf: the open html file pointer
#        testruns: array of Data objects from parseKernelLog or parseTraceLog
def addScriptCode(hf, testruns):
        t0 = (testruns[0].start - testruns[-1].tSuspended) * 1000
        tMax = (testruns[-1].end - testruns[-1].tSuspended) * 1000
        # create an array in javascript memory with the device details
        detail = '      var devtable = [];\n'
        for data in testruns:
                topo = data.deviceTopology()
                detail += '     devtable[%d] = "%s";\n' % (data.testnumber, topo)
        detail += '     var bounds = [%f,%f];\n' % (t0, tMax)
        # add the code which will manipulate the data in the browser
        script_code = \
        '<script type="text/javascript">\n'+detail+\
        '       function zoomTimeline() {\n'\
        '               var timescale = document.getElementById("timescale");\n'\
        '               var dmesg = document.getElementById("dmesg");\n'\
        '               var zoombox = document.getElementById("dmesgzoombox");\n'\
        '               var val = parseFloat(dmesg.style.width);\n'\
        '               var newval = 100;\n'\
        '               var sh = window.outerWidth / 2;\n'\
        '               if(this.id == "zoomin") {\n'\
        '                       newval = val * 1.2;\n'\
        '                       if(newval > 40000) newval = 40000;\n'\
        '                       dmesg.style.width = newval+"%";\n'\
        '                       zoombox.scrollLeft = ((zoombox.scrollLeft + sh) * newval / val) - sh;\n'\
        '               } else if (this.id == "zoomout") {\n'\
        '                       newval = val / 1.2;\n'\
        '                       if(newval < 100) newval = 100;\n'\
        '                       dmesg.style.width = newval+"%";\n'\
        '                       zoombox.scrollLeft = ((zoombox.scrollLeft + sh) * newval / val) - sh;\n'\
        '               } else {\n'\
        '                       zoombox.scrollLeft = 0;\n'\
        '                       dmesg.style.width = "100%";\n'\
        '               }\n'\
        '               var html = "";\n'\
        '               var t0 = bounds[0];\n'\
        '               var tMax = bounds[1];\n'\
        '               var tTotal = tMax - t0;\n'\
        '               var wTotal = tTotal * 100.0 / newval;\n'\
        '               for(var tS = 1000; (wTotal / tS) < 3; tS /= 10);\n'\
        '               if(tS < 1) tS = 1;\n'\
        '               for(var s = ((t0 / tS)|0) * tS; s < tMax; s += tS) {\n'\
        '                       var pos = (tMax - s) * 100.0 / tTotal;\n'\
        '                       var name = (s == 0)?"S/R":(s+"ms");\n'\
        '                       html += "<div class=\\"t\\" style=\\"right:"+pos+"%\\">"+name+"</div>";\n'\
        '               }\n'\
        '               timescale.innerHTML = html;\n'\
        '       }\n'\
        '       function deviceHover() {\n'\
        '               var name = this.title.slice(0, this.title.indexOf(" ("));\n'\
        '               var dmesg = document.getElementById("dmesg");\n'\
        '               var dev = dmesg.getElementsByClassName("thread");\n'\
        '               var cpu = -1;\n'\
        '               if(name.match("CPU_ON\[[0-9]*\]"))\n'\
        '                       cpu = parseInt(name.slice(7));\n'\
        '               else if(name.match("CPU_OFF\[[0-9]*\]"))\n'\
        '                       cpu = parseInt(name.slice(8));\n'\
        '               for (var i = 0; i < dev.length; i++) {\n'\
        '                       dname = dev[i].title.slice(0, dev[i].title.indexOf(" ("));\n'\
        '                       if((cpu >= 0 && dname.match("CPU_O[NF]*\\\[*"+cpu+"\\\]")) ||\n'\
        '                               (name == dname))\n'\
        '                       {\n'\
        '                               dev[i].className = "thread hover";\n'\
        '                       } else {\n'\
        '                               dev[i].className = "thread";\n'\
        '                       }\n'\
        '               }\n'\
        '       }\n'\
        '       function deviceUnhover() {\n'\
        '               var dmesg = document.getElementById("dmesg");\n'\
        '               var dev = dmesg.getElementsByClassName("thread");\n'\
        '               for (var i = 0; i < dev.length; i++) {\n'\
        '                       dev[i].className = "thread";\n'\
        '               }\n'\
        '       }\n'\
        '       function deviceTitle(title, total, cpu) {\n'\
        '               var prefix = "Total";\n'\
        '               if(total.length > 3) {\n'\
        '                       prefix = "Average";\n'\
        '                       total[1] = (total[1]+total[3])/2;\n'\
        '                       total[2] = (total[2]+total[4])/2;\n'\
        '               }\n'\
        '               var devtitle = document.getElementById("devicedetailtitle");\n'\
        '               var name = title.slice(0, title.indexOf(" "));\n'\
        '               if(cpu >= 0) name = "CPU"+cpu;\n'\
        '               var driver = "";\n'\
        '               var tS = "<t2>(</t2>";\n'\
        '               var tR = "<t2>)</t2>";\n'\
        '               if(total[1] > 0)\n'\
        '                       tS = "<t2>("+prefix+" Suspend:</t2><t0> "+total[1].toFixed(3)+" ms</t0> ";\n'\
        '               if(total[2] > 0)\n'\
        '                       tR = " <t2>"+prefix+" Resume:</t2><t0> "+total[2].toFixed(3)+" ms<t2>)</t2></t0>";\n'\
        '               var s = title.indexOf("{");\n'\
        '               var e = title.indexOf("}");\n'\
        '               if((s >= 0) && (e >= 0))\n'\
        '                       driver = title.slice(s+1, e) + " <t1>@</t1> ";\n'\
        '               if(total[1] > 0 && total[2] > 0)\n'\
        '                       devtitle.innerHTML = "<t0>"+driver+name+"</t0> "+tS+tR;\n'\
        '               else\n'\
        '                       devtitle.innerHTML = "<t0>"+title+"</t0>";\n'\
        '               return name;\n'\
        '       }\n'\
        '       function deviceDetail() {\n'\
        '               var devinfo = document.getElementById("devicedetail");\n'\
        '               devinfo.style.display = "block";\n'\
        '               var name = this.title.slice(0, this.title.indexOf(" ("));\n'\
        '               var cpu = -1;\n'\
        '               if(name.match("CPU_ON\[[0-9]*\]"))\n'\
        '                       cpu = parseInt(name.slice(7));\n'\
        '               else if(name.match("CPU_OFF\[[0-9]*\]"))\n'\
        '                       cpu = parseInt(name.slice(8));\n'\
        '               var dmesg = document.getElementById("dmesg");\n'\
        '               var dev = dmesg.getElementsByClassName("thread");\n'\
        '               var idlist = [];\n'\
        '               var pdata = [[]];\n'\
        '               var pd = pdata[0];\n'\
        '               var total = [0.0, 0.0, 0.0];\n'\
        '               for (var i = 0; i < dev.length; i++) {\n'\
        '                       dname = dev[i].title.slice(0, dev[i].title.indexOf(" ("));\n'\
        '                       if((cpu >= 0 && dname.match("CPU_O[NF]*\\\[*"+cpu+"\\\]")) ||\n'\
        '                               (name == dname))\n'\
        '                       {\n'\
        '                               idlist[idlist.length] = dev[i].id;\n'\
        '                               var tidx = 1;\n'\
        '                               if(dev[i].id[0] == "a") {\n'\
        '                                       pd = pdata[0];\n'\
        '                               } else {\n'\
        '                                       if(pdata.length == 1) pdata[1] = [];\n'\
        '                                       if(total.length == 3) total[3]=total[4]=0.0;\n'\
        '                                       pd = pdata[1];\n'\
        '                                       tidx = 3;\n'\
        '                               }\n'\
        '                               var info = dev[i].title.split(" ");\n'\
        '                               var pname = info[info.length-1];\n'\
        '                               pd[pname] = parseFloat(info[info.length-3].slice(1));\n'\
        '                               total[0] += pd[pname];\n'\
        '                               if(pname.indexOf("suspend") >= 0)\n'\
        '                                       total[tidx] += pd[pname];\n'\
        '                               else\n'\
        '                                       total[tidx+1] += pd[pname];\n'\
        '                       }\n'\
        '               }\n'\
        '               var devname = deviceTitle(this.title, total, cpu);\n'\
        '               var left = 0.0;\n'\
        '               for (var t = 0; t < pdata.length; t++) {\n'\
        '                       pd = pdata[t];\n'\
        '                       devinfo = document.getElementById("devicedetail"+t);\n'\
        '                       var phases = devinfo.getElementsByClassName("phaselet");\n'\
        '                       for (var i = 0; i < phases.length; i++) {\n'\
        '                               if(phases[i].id in pd) {\n'\
        '                                       var w = 100.0*pd[phases[i].id]/total[0];\n'\
        '                                       var fs = 32;\n'\
        '                                       if(w < 8) fs = 4*w | 0;\n'\
        '                                       var fs2 = fs*3/4;\n'\
        '                                       phases[i].style.width = w+"%";\n'\
        '                                       phases[i].style.left = left+"%";\n'\
        '                                       phases[i].title = phases[i].id+" "+pd[phases[i].id]+" ms";\n'\
        '                                       left += w;\n'\
        '                                       var time = "<t4 style=\\"font-size:"+fs+"px\\">"+pd[phases[i].id]+" ms<br></t4>";\n'\
        '                                       var pname = "<t3 style=\\"font-size:"+fs2+"px\\">"+phases[i].id.replace("_", " ")+"</t3>";\n'\
        '                                       phases[i].innerHTML = time+pname;\n'\
        '                               } else {\n'\
        '                                       phases[i].style.width = "0%";\n'\
        '                                       phases[i].style.left = left+"%";\n'\
        '                               }\n'\
        '                       }\n'\
        '               }\n'\
        '               var cglist = document.getElementById("callgraphs");\n'\
        '               if(!cglist) return;\n'\
        '               var cg = cglist.getElementsByClassName("atop");\n'\
        '               for (var i = 0; i < cg.length; i++) {\n'\
        '                       if(idlist.indexOf(cg[i].id) >= 0) {\n'\
        '                               cg[i].style.display = "block";\n'\
        '                       } else {\n'\
        '                               cg[i].style.display = "none";\n'\
        '                       }\n'\
        '               }\n'\
        '       }\n'\
        '       function devListWindow(e) {\n'\
        '               var sx = e.clientX;\n'\
        '               if(sx > window.innerWidth - 440)\n'\
        '                       sx = window.innerWidth - 440;\n'\
        '               var cfg="top="+e.screenY+", left="+sx+", width=440, height=720, scrollbars=yes";\n'\
        '               var win = window.open("", "_blank", cfg);\n'\
        '               if(window.chrome) win.moveBy(sx, 0);\n'\
        '               var html = "<title>"+e.target.innerHTML+"</title>"+\n'\
        '                       "<style type=\\"text/css\\">"+\n'\
        '                       "   ul {list-style-type:circle;padding-left:10px;margin-left:10px;}"+\n'\
        '                       "</style>"\n'\
        '               var dt = devtable[0];\n'\
        '               if(e.target.id != "devlist1")\n'\
        '                       dt = devtable[1];\n'\
        '               win.document.write(html+dt);\n'\
        '       }\n'\
        '       window.addEventListener("load", function () {\n'\
        '               var dmesg = document.getElementById("dmesg");\n'\
        '               dmesg.style.width = "100%"\n'\
        '               document.getElementById("zoomin").onclick = zoomTimeline;\n'\
        '               document.getElementById("zoomout").onclick = zoomTimeline;\n'\
        '               document.getElementById("zoomdef").onclick = zoomTimeline;\n'\
        '               var devlist = document.getElementsByClassName("devlist");\n'\
        '               for (var i = 0; i < devlist.length; i++)\n'\
        '                       devlist[i].onclick = devListWindow;\n'\
        '               var dev = dmesg.getElementsByClassName("thread");\n'\
        '               for (var i = 0; i < dev.length; i++) {\n'\
        '                       dev[i].onclick = deviceDetail;\n'\
        '                       dev[i].onmouseover = deviceHover;\n'\
        '                       dev[i].onmouseout = deviceUnhover;\n'\
        '               }\n'\
        '               zoomTimeline();\n'\
        '       });\n'\
        '</script>\n'
        hf.write(script_code);

# Function: executeSuspend
# Description:
#        Execute system suspend through the sysfs interface, then copy the output
#        dmesg and ftrace files to the test output directory.
def executeSuspend():
        global sysvals

        detectUSB(False)
        t0 = time.time()*1000
        tp = sysvals.tpath
        # execute however many s/r runs requested
        for count in range(1,sysvals.execcount+1):
                # clear the kernel ring buffer just as we start
                os.system('dmesg -C')
                # enable callgraph ftrace only for the second run
                if(sysvals.usecallgraph and count == 2):
                        # set trace type
                        os.system('echo function_graph > '+tp+'current_tracer')
                        os.system('echo "" > '+tp+'set_ftrace_filter')
                        # set trace format options
                        os.system('echo funcgraph-abstime > '+tp+'trace_options')
                        os.system('echo funcgraph-proc > '+tp+'trace_options')
                        # focus only on device suspend and resume
                        os.system('cat '+tp+'available_filter_functions | '+\
                                'grep dpm_run_callback > '+tp+'set_graph_function')
                # if this is test2 and there's a delay, start here
                if(count > 1 and sysvals.x2delay > 0):
                        tN = time.time()*1000
                        while (tN - t0) < sysvals.x2delay:
                                tN = time.time()*1000
                                time.sleep(0.001)
                # start ftrace
                if(sysvals.usecallgraph or sysvals.usetraceevents):
                        print('START TRACING')
                        os.system('echo 1 > '+tp+'tracing_on')
                # initiate suspend
                if(sysvals.usecallgraph or sysvals.usetraceevents):
                        os.system('echo SUSPEND START > '+tp+'trace_marker')
                if(sysvals.rtcwake):
                        print('SUSPEND START')
                        print('will autoresume in %d seconds' % sysvals.rtcwaketime)
                        sysvals.rtcWakeAlarm()
                else:
                        print('SUSPEND START (press a key to resume)')
                pf = open(sysvals.powerfile, 'w')
                pf.write(sysvals.suspendmode)
                # execution will pause here
                pf.close()
                t0 = time.time()*1000
                # return from suspend
                print('RESUME COMPLETE')
                if(sysvals.usecallgraph or sysvals.usetraceevents):
                        os.system('echo RESUME COMPLETE > '+tp+'trace_marker')
                # see if there's firmware timing data to be had
                t = sysvals.postresumetime
                if(t > 0):
                        print('Waiting %d seconds for POST-RESUME trace events...' % t)
                        time.sleep(t)
                # stop ftrace
                if(sysvals.usecallgraph or sysvals.usetraceevents):
                        os.system('echo 0 > '+tp+'tracing_on')
                        print('CAPTURING TRACE')
                        writeDatafileHeader(sysvals.ftracefile)
                        os.system('cat '+tp+'trace >> '+sysvals.ftracefile)
                        os.system('echo "" > '+tp+'trace')
                # grab a copy of the dmesg output
                print('CAPTURING DMESG')
                writeDatafileHeader(sysvals.dmesgfile)
                os.system('dmesg -c >> '+sysvals.dmesgfile)

def writeDatafileHeader(filename):
        global sysvals

        fw = getFPDT(False)
        prt = sysvals.postresumetime
        fp = open(filename, 'a')
        fp.write(sysvals.teststamp+'\n')
        if(fw):
                fp.write('# fwsuspend %u fwresume %u\n' % (fw[0], fw[1]))
        if(prt > 0):
                fp.write('# post resume time %u\n' % prt)
        fp.close()

# Function: executeAndroidSuspend
# Description:
#        Execute system suspend through the sysfs interface
#        on a remote android device, then transfer the output
#        dmesg and ftrace files to the local output directory.
def executeAndroidSuspend():
        global sysvals

        # check to see if the display is currently off
        tp = sysvals.tpath
        out = os.popen(sysvals.adb+\
                ' shell dumpsys power | grep mScreenOn').read().strip()
        # if so we need to turn it on so we can issue a new suspend
        if(out.endswith('false')):
                print('Waking the device up for the test...')
                # send the KEYPAD_POWER keyevent to wake it up
                os.system(sysvals.adb+' shell input keyevent 26')
                # wait a few seconds so the user can see the device wake up
                time.sleep(3)
        # execute however many s/r runs requested
        for count in range(1,sysvals.execcount+1):
                # clear the kernel ring buffer just as we start
                os.system(sysvals.adb+' shell dmesg -c > /dev/null 2>&1')
                # start ftrace
                if(sysvals.usetraceevents):
                        print('START TRACING')
                        os.system(sysvals.adb+" shell 'echo 1 > "+tp+"tracing_on'")
                # initiate suspend
                for count in range(1,sysvals.execcount+1):
                        if(sysvals.usetraceevents):
                                os.system(sysvals.adb+\
                                        " shell 'echo SUSPEND START > "+tp+"trace_marker'")
                        print('SUSPEND START (press a key on the device to resume)')
                        os.system(sysvals.adb+" shell 'echo "+sysvals.suspendmode+\
                                " > "+sysvals.powerfile+"'")
                        # execution will pause here, then adb will exit
                        while(True):
                                check = os.popen(sysvals.adb+\
                                        ' shell pwd 2>/dev/null').read().strip()
                                if(len(check) > 0):
                                        break
                                time.sleep(1)
                        if(sysvals.usetraceevents):
                                os.system(sysvals.adb+" shell 'echo RESUME COMPLETE > "+tp+\
                                        "trace_marker'")
                # return from suspend
                print('RESUME COMPLETE')
                # stop ftrace
                if(sysvals.usetraceevents):
                        os.system(sysvals.adb+" shell 'echo 0 > "+tp+"tracing_on'")
                        print('CAPTURING TRACE')
                        os.system('echo "'+sysvals.teststamp+'" > '+sysvals.ftracefile)
                        os.system(sysvals.adb+' shell cat '+tp+\
                                'trace >> '+sysvals.ftracefile)
                # grab a copy of the dmesg output
                print('CAPTURING DMESG')
                os.system('echo "'+sysvals.teststamp+'" > '+sysvals.dmesgfile)
                os.system(sysvals.adb+' shell dmesg >> '+sysvals.dmesgfile)

# Function: setUSBDevicesAuto
# Description:
#        Set the autosuspend control parameter of all USB devices to auto
#        This can be dangerous, so use at your own risk, most devices are set
#        to always-on since the kernel cant determine if the device can
#        properly autosuspend
def setUSBDevicesAuto():
        global sysvals

        rootCheck()
        for dirname, dirnames, filenames in os.walk('/sys/devices'):
                if(re.match('.*/usb[0-9]*.*', dirname) and
                        'idVendor' in filenames and 'idProduct' in filenames):
                        os.system('echo auto > %s/power/control' % dirname)
                        name = dirname.split('/')[-1]
                        desc = os.popen('cat %s/product 2>/dev/null' % \
                                dirname).read().replace('\n', '')
                        ctrl = os.popen('cat %s/power/control 2>/dev/null' % \
                                dirname).read().replace('\n', '')
                        print('control is %s for %6s: %s' % (ctrl, name, desc))

# Function: yesno
# Description:
#        Print out an equivalent Y or N for a set of known parameter values
# Output:
#        'Y', 'N', or ' ' if the value is unknown
def yesno(val):
        yesvals = ['auto', 'enabled', 'active', '1']
        novals = ['on', 'disabled', 'suspended', 'forbidden', 'unsupported']
        if val in yesvals:
                return 'Y'
        elif val in novals:
                return 'N'
        return ' '

# Function: ms2nice
# Description:
#        Print out a very concise time string in minutes and seconds
# Output:
#        The time string, e.g. "1901m16s"
def ms2nice(val):
        ms = 0
        try:
                ms = int(val)
        except:
                return 0.0
        m = ms / 60000
        s = (ms / 1000) - (m * 60)
        return '%3dm%2ds' % (m, s)

# Function: detectUSB
# Description:
#        Detect all the USB hosts and devices currently connected and add
#        a list of USB device names to sysvals for better timeline readability
# Arguments:
#        output: True to output the info to stdout, False otherwise
def detectUSB(output):
        global sysvals

        field = {'idVendor':'', 'idProduct':'', 'product':'', 'speed':''}
        power = {'async':'', 'autosuspend':'', 'autosuspend_delay_ms':'',
                         'control':'', 'persist':'', 'runtime_enabled':'',
                         'runtime_status':'', 'runtime_usage':'',
                        'runtime_active_time':'',
                        'runtime_suspended_time':'',
                        'active_duration':'',
                        'connected_duration':''}
        if(output):
                print('LEGEND')
                print('---------------------------------------------------------------------------------------------')
                print('  A = async/sync PM queue Y/N                       D = autosuspend delay (seconds)')
                print('  S = autosuspend Y/N                         rACTIVE = runtime active (min/sec)')
                print('  P = persist across suspend Y/N              rSUSPEN = runtime suspend (min/sec)')
                print('  E = runtime suspend enabled/forbidden Y/N    ACTIVE = active duration (min/sec)')
                print('  R = runtime status active/suspended Y/N     CONNECT = connected duration (min/sec)')
                print('  U = runtime usage count')
                print('---------------------------------------------------------------------------------------------')
                print('  NAME       ID      DESCRIPTION         SPEED A S P E R U D rACTIVE rSUSPEN  ACTIVE CONNECT')
                print('---------------------------------------------------------------------------------------------')

        for dirname, dirnames, filenames in os.walk('/sys/devices'):
                if(re.match('.*/usb[0-9]*.*', dirname) and
                        'idVendor' in filenames and 'idProduct' in filenames):
                        for i in field:
                                field[i] = os.popen('cat %s/%s 2>/dev/null' % \
                                        (dirname, i)).read().replace('\n', '')
                        name = dirname.split('/')[-1]
                        if(len(field['product']) > 0):
                                sysvals.altdevname[name] = \
                                        '%s [%s]' % (field['product'], name)
                        else:
                                sysvals.altdevname[name] = \
                                        '%s:%s [%s]' % (field['idVendor'], \
                                                field['idProduct'], name)
                        if(output):
                                for i in power:
                                        power[i] = os.popen('cat %s/power/%s 2>/dev/null' % \
                                                (dirname, i)).read().replace('\n', '')
                                if(re.match('usb[0-9]*', name)):
                                        first = '%-8s' % name
                                else:
                                        first = '%8s' % name
                                print('%s [%s:%s] %-20s %-4s %1s %1s %1s %1s %1s %1s %1s %s %s %s %s' % \
                                        (first, field['idVendor'], field['idProduct'], \
                                        field['product'][0:20], field['speed'], \
                                        yesno(power['async']), \
                                        yesno(power['control']), \
                                        yesno(power['persist']), \
                                        yesno(power['runtime_enabled']), \
                                        yesno(power['runtime_status']), \
                                        power['runtime_usage'], \
                                        power['autosuspend'], \
                                        ms2nice(power['runtime_active_time']), \
                                        ms2nice(power['runtime_suspended_time']), \
                                        ms2nice(power['active_duration']), \
                                        ms2nice(power['connected_duration'])))

# Function: getModes
# Description:
#        Determine the supported power modes on this system
# Output:
#        A string list of the available modes
def getModes():
        global sysvals
        modes = ''
        if(not sysvals.android):
                if(os.path.exists(sysvals.powerfile)):
                        fp = open(sysvals.powerfile, 'r')
                        modes = string.split(fp.read())
                        fp.close()
        else:
                line = os.popen(sysvals.adb+' shell cat '+\
                        sysvals.powerfile).read().strip()
                modes = string.split(line)
        return modes

# Function: getFPDT
# Description:
#        Read the acpi bios tables and pull out FPDT, the firmware data
# Arguments:
#        output: True to output the info to stdout, False otherwise
def getFPDT(output):
        global sysvals

        rectype = {}
        rectype[0] = 'Firmware Basic Boot Performance Record'
        rectype[1] = 'S3 Performance Table Record'
        prectype = {}
        prectype[0] = 'Basic S3 Resume Performance Record'
        prectype[1] = 'Basic S3 Suspend Performance Record'

        rootCheck()
        if(not os.path.exists(sysvals.fpdtpath)):
                if(output):
                        doError('file doesnt exist: %s' % sysvals.fpdtpath, False)
                return False
        if(not os.access(sysvals.fpdtpath, os.R_OK)):
                if(output):
                        doError('file isnt readable: %s' % sysvals.fpdtpath, False)
                return False
        if(not os.path.exists(sysvals.mempath)):
                if(output):
                        doError('file doesnt exist: %s' % sysvals.mempath, False)
                return False
        if(not os.access(sysvals.mempath, os.R_OK)):
                if(output):
                        doError('file isnt readable: %s' % sysvals.mempath, False)
                return False

        fp = open(sysvals.fpdtpath, 'rb')
        buf = fp.read()
        fp.close()

        if(len(buf) < 36):
                if(output):
                        doError('Invalid FPDT table data, should '+\
                                'be at least 36 bytes', False)
                return False

        table = struct.unpack('4sIBB6s8sI4sI', buf[0:36])
        if(output):
                print('')
                print('Firmware Performance Data Table (%s)' % table[0])
                print('                  Signature : %s' % table[0])
                print('               Table Length : %u' % table[1])
                print('                   Revision : %u' % table[2])
                print('                   Checksum : 0x%x' % table[3])
                print('                     OEM ID : %s' % table[4])
                print('               OEM Table ID : %s' % table[5])
                print('               OEM Revision : %u' % table[6])
                print('                 Creator ID : %s' % table[7])
                print('           Creator Revision : 0x%x' % table[8])
                print('')

        if(table[0] != 'FPDT'):
                if(output):
                        doError('Invalid FPDT table')
                return False
        if(len(buf) <= 36):
                return False
        i = 0
        fwData = [0, 0]
        records = buf[36:]
        fp = open(sysvals.mempath, 'rb')
        while(i < len(records)):
                header = struct.unpack('HBB', records[i:i+4])
                if(header[0] not in rectype):
                        continue
                if(header[1] != 16):
                        continue
                addr = struct.unpack('Q', records[i+8:i+16])[0]
                try:
                        fp.seek(addr)
                        first = fp.read(8)
                except:
                        doError('Bad address 0x%x in %s' % (addr, sysvals.mempath), False)
                rechead = struct.unpack('4sI', first)
                recdata = fp.read(rechead[1]-8)
                if(rechead[0] == 'FBPT'):
                        record = struct.unpack('HBBIQQQQQ', recdata)
                        if(output):
                                print('%s (%s)' % (rectype[header[0]], rechead[0]))
                                print('                  Reset END : %u ns' % record[4])
                                print('  OS Loader LoadImage Start : %u ns' % record[5])
                                print(' OS Loader StartImage Start : %u ns' % record[6])
                                print('     ExitBootServices Entry : %u ns' % record[7])
                                print('      ExitBootServices Exit : %u ns' % record[8])
                elif(rechead[0] == 'S3PT'):
                        if(output):
                                print('%s (%s)' % (rectype[header[0]], rechead[0]))
                        j = 0
                        while(j < len(recdata)):
                                prechead = struct.unpack('HBB', recdata[j:j+4])
                                if(prechead[0] not in prectype):
                                        continue
                                if(prechead[0] == 0):
                                        record = struct.unpack('IIQQ', recdata[j:j+prechead[1]])
                                        fwData[1] = record[2]
                                        if(output):
                                                print('    %s' % prectype[prechead[0]])
                                                print('               Resume Count : %u' % \
                                                        record[1])
                                                print('                 FullResume : %u ns' % \
                                                        record[2])
                                                print('              AverageResume : %u ns' % \
                                                        record[3])
                                elif(prechead[0] == 1):
                                        record = struct.unpack('QQ', recdata[j+4:j+prechead[1]])
                                        fwData[0] = record[1] - record[0]
                                        if(output):
                                                print('    %s' % prectype[prechead[0]])
                                                print('               SuspendStart : %u ns' % \
                                                        record[0])
                                                print('                 SuspendEnd : %u ns' % \
                                                        record[1])
                                                print('                SuspendTime : %u ns' % \
                                                        fwData[0])
                                j += prechead[1]
                if(output):
                        print('')
                i += header[1]
        fp.close()
        return fwData

# Function: statusCheck
# Description:
#        Verify that the requested command and options will work, and
#        print the results to the terminal
# Output:
#        True if the test will work, False if not
def statusCheck():
        global sysvals
        status = True

        if(sysvals.android):
                print('Checking the android system ...')
        else:
                print('Checking this system (%s)...' % platform.node())

        # check if adb is connected to a device
        if(sysvals.android):
                res = 'NO'
                out = os.popen(sysvals.adb+' get-state').read().strip()
                if(out == 'device'):
                        res = 'YES'
                print('    is android device connected: %s' % res)
                if(res != 'YES'):
                        print('    Please connect the device before using this tool')
                        return False

        # check we have root access
        res = 'NO (No features of this tool will work!)'
        if(sysvals.android):
                out = os.popen(sysvals.adb+' shell id').read().strip()
                if('root' in out):
                        res = 'YES'
        else:
                if(os.environ['USER'] == 'root'):
                        res = 'YES'
        print('    have root access: %s' % res)
        if(res != 'YES'):
                if(sysvals.android):
                        print('    Try running "adb root" to restart the daemon as root')
                else:
                        print('    Try running this script with sudo')
                return False

        # check sysfs is mounted
        res = 'NO (No features of this tool will work!)'
        if(sysvals.android):
                out = os.popen(sysvals.adb+' shell ls '+\
                        sysvals.powerfile).read().strip()
                if(out == sysvals.powerfile):
                        res = 'YES'
        else:
                if(os.path.exists(sysvals.powerfile)):
                        res = 'YES'
        print('    is sysfs mounted: %s' % res)
        if(res != 'YES'):
                return False

        # check target mode is a valid mode
        res = 'NO'
        modes = getModes()
        if(sysvals.suspendmode in modes):
                res = 'YES'
        else:
                status = False
        print('    is "%s" a valid power mode: %s' % (sysvals.suspendmode, res))
        if(res == 'NO'):
                print('      valid power modes are: %s' % modes)
                print('      please choose one with -m')

        # check if the tool can unlock the device
        if(sysvals.android):
                res = 'YES'
                out1 = os.popen(sysvals.adb+\
                        ' shell dumpsys power | grep mScreenOn').read().strip()
                out2 = os.popen(sysvals.adb+\
                        ' shell input').read().strip()
                if(not out1.startswith('mScreenOn') or not out2.startswith('usage')):
                        res = 'NO (wake the android device up before running the test)'
                print('    can I unlock the screen: %s' % res)

        # check if ftrace is available
        res = 'NO'
        ftgood = verifyFtrace()
        if(ftgood):
                res = 'YES'
        elif(sysvals.usecallgraph):
                status = False
        print('    is ftrace supported: %s' % res)

        # what data source are we using
        res = 'DMESG'
        if(ftgood):
                sysvals.usetraceeventsonly = True
                sysvals.usetraceevents = False
                for e in sysvals.traceevents:
                        check = False
                        if(sysvals.android):
                                out = os.popen(sysvals.adb+' shell ls -d '+\
                                        sysvals.epath+e).read().strip()
                                if(out == sysvals.epath+e):
                                        check = True
                        else:
                                if(os.path.exists(sysvals.epath+e)):
                                        check = True
                        if(not check):
                                sysvals.usetraceeventsonly = False
                        if(e == 'suspend_resume' and check):
                                sysvals.usetraceevents = True
                if(sysvals.usetraceevents and sysvals.usetraceeventsonly):
                        res = 'FTRACE (all trace events found)'
                elif(sysvals.usetraceevents):
                        res = 'DMESG and FTRACE (suspend_resume trace event found)'
        print('    timeline data source: %s' % res)

        # check if rtcwake
        res = 'NO'
        if(sysvals.rtcpath != ''):
                res = 'YES'
        elif(sysvals.rtcwake):
                status = False
        print('    is rtcwake supported: %s' % res)

        return status

# Function: doError
# Description:
#        generic error function for catastrphic failures
# Arguments:
#        msg: the error message to print
#        help: True if printHelp should be called after, False otherwise
def doError(msg, help):
        if(help == True):
                printHelp()
        print('ERROR: %s\n') % msg
        sys.exit()

# Function: doWarning
# Description:
#        generic warning function for non-catastrophic anomalies
# Arguments:
#        msg: the warning message to print
#        file: If not empty, a filename to request be sent to the owner for debug
def doWarning(msg, file):
        print('/* %s */') % msg
        if(file):
                print('/* For a fix, please send this'+\
                        ' %s file to <todd.e.brandt@intel.com> */' % file)

# Function: rootCheck
# Description:
#        quick check to see if we have root access
def rootCheck():
        if(os.environ['USER'] != 'root'):
                doError('This script must be run as root', False)

# Function: getArgInt
# Description:
#        pull out an integer argument from the command line with checks
def getArgInt(name, args, min, max):
        try:
                arg = args.next()
        except:
                doError(name+': no argument supplied', True)
        try:
                val = int(arg)
        except:
                doError(name+': non-integer value given', True)
        if(val < min or val > max):
                doError(name+': value should be between %d and %d' % (min, max), True)
        return val

# Function: rerunTest
# Description:
#        generate an output from an existing set of ftrace/dmesg logs
def rerunTest():
        global sysvals

        if(sysvals.ftracefile != ''):
                doesTraceLogHaveTraceEvents()
        if(sysvals.dmesgfile == '' and not sysvals.usetraceeventsonly):
                doError('recreating this html output '+\
                        'requires a dmesg file', False)
        sysvals.setOutputFile()
        vprint('Output file: %s' % sysvals.htmlfile)
        print('PROCESSING DATA')
        if(sysvals.usetraceeventsonly):
                testruns = parseTraceLog()
        else:
                testruns = loadKernelLog()
                for data in testruns:
                        parseKernelLog(data)
                if(sysvals.ftracefile != ''):
                        appendIncompleteTraceLog(testruns)
        createHTML(testruns)

# Function: runTest
# Description:
#        execute a suspend/resume, gather the logs, and generate the output
def runTest(subdir):
        global sysvals

        # prepare for the test
        if(not sysvals.android):
                initFtrace()
        else:
                initFtraceAndroid()
        sysvals.initTestOutput(subdir)

        vprint('Output files:\n    %s' % sysvals.dmesgfile)
        if(sysvals.usecallgraph or
                sysvals.usetraceevents or
                sysvals.usetraceeventsonly):
                vprint('    %s' % sysvals.ftracefile)
        vprint('    %s' % sysvals.htmlfile)

        # execute the test
        if(not sysvals.android):
                executeSuspend()
        else:
                executeAndroidSuspend()

        # analyze the data and create the html output
        print('PROCESSING DATA')
        if(sysvals.usetraceeventsonly):
                # data for kernels 3.15 or newer is entirely in ftrace
                testruns = parseTraceLog()
        else:
                # data for kernels older than 3.15 is primarily in dmesg
                testruns = loadKernelLog()
                for data in testruns:
                        parseKernelLog(data)
                if(sysvals.usecallgraph or sysvals.usetraceevents):
                        appendIncompleteTraceLog(testruns)
        createHTML(testruns)

# Function: runSummary
# Description:
#        create a summary of tests in a sub-directory
def runSummary(subdir, output):
        global sysvals

        # get a list of ftrace output files
        files = []
        for dirname, dirnames, filenames in os.walk(subdir):
                for filename in filenames:
                        if(re.match('.*_ftrace.txt', filename)):
                                files.append("%s/%s" % (dirname, filename))

        # process the files in order and get an array of data objects
        testruns = []
        for file in sorted(files):
                if output:
                        print("Test found in %s" % os.path.dirname(file))
                sysvals.ftracefile = file
                sysvals.dmesgfile = file.replace('_ftrace.txt', '_dmesg.txt')
                doesTraceLogHaveTraceEvents()
                sysvals.usecallgraph = False
                if not sysvals.usetraceeventsonly:
                        if(not os.path.exists(sysvals.dmesgfile)):
                                print("Skipping %s: not a valid test input" % file)
                                continue
                        else:
                                if output:
                                        f = os.path.basename(sysvals.ftracefile)
                                        d = os.path.basename(sysvals.dmesgfile)
                                        print("\tInput files: %s and %s" % (f, d))
                                testdata = loadKernelLog()
                                data = testdata[0]
                                parseKernelLog(data)
                                testdata = [data]
                                appendIncompleteTraceLog(testdata)
                else:
                        if output:
                                print("\tInput file: %s" % os.path.basename(sysvals.ftracefile))
                        testdata = parseTraceLog()
                        data = testdata[0]
                data.normalizeTime(data.tSuspended)
                link = file.replace(subdir+'/', '').replace('_ftrace.txt', '.html')
                data.outfile = link
                testruns.append(data)

        createHTMLSummarySimple(testruns, subdir+'/summary.html')

# Function: printHelp
# Description:
#        print out the help text
def printHelp():
        global sysvals
        modes = getModes()

        print('')
        print('AnalyzeSuspend v%.1f' % sysvals.version)
        print('Usage: sudo analyze_suspend.py <options>')
        print('')
        print('Description:')
        print('  This tool is designed to assist kernel and OS developers in optimizing')
        print('  their linux stack\'s suspend/resume time. Using a kernel image built')
        print('  with a few extra options enabled, the tool will execute a suspend and')
        print('  capture dmesg and ftrace data until resume is complete. This data is')
        print('  transformed into a device timeline and an optional callgraph to give')
        print('  a detailed view of which devices/subsystems are taking the most')
        print('  time in suspend/resume.')
        print('')
        print('  Generates output files in subdirectory: suspend-mmddyy-HHMMSS')
        print('   HTML output:                    <hostname>_<mode>.html')
        print('   raw dmesg output:               <hostname>_<mode>_dmesg.txt')
        print('   raw ftrace output:              <hostname>_<mode>_ftrace.txt')
        print('')
        print('Options:')
        print('  [general]')
        print('    -h          Print this help text')
        print('    -v          Print the current tool version')
        print('    -verbose    Print extra information during execution and analysis')
        print('    -status     Test to see if the system is enabled to run this tool')
        print('    -modes      List available suspend modes')
        print('    -m mode     Mode to initiate for suspend %s (default: %s)') % (modes, sysvals.suspendmode)
        print('    -rtcwake t  Use rtcwake to autoresume after <t> seconds (default: disabled)')
        print('  [advanced]')
        print('    -f          Use ftrace to create device callgraphs (default: disabled)')
        print('    -filter "d1 d2 ..." Filter out all but this list of dev names')
        print('    -x2         Run two suspend/resumes back to back (default: disabled)')
        print('    -x2delay t  Minimum millisecond delay <t> between the two test runs (default: 0 ms)')
        print('    -postres t  Time after resume completion to wait for post-resume events (default: 0 S)')
        print('    -multi n d  Execute <n> consecutive tests at <d> seconds intervals. The outputs will')
        print('                be created in a new subdirectory with a summary page.')
        print('  [utilities]')
        print('    -fpdt       Print out the contents of the ACPI Firmware Performance Data Table')
        print('    -usbtopo    Print out the current USB topology with power info')
        print('    -usbauto    Enable autosuspend for all connected USB devices')
        print('  [android testing]')
        print('    -adb binary Use the given adb binary to run the test on an android device.')
        print('                The device should already be connected and with root access.')
        print('                Commands will be executed on the device using "adb shell"')
        print('  [re-analyze data from previous runs]')
        print('    -ftrace ftracefile  Create HTML output using ftrace input')
        print('    -dmesg dmesgfile    Create HTML output using dmesg (not needed for kernel >= 3.15)')
        print('    -summary directory  Create a summary of all test in this dir')
        print('')
        return True

# ----------------- MAIN --------------------
# exec start (skipped if script is loaded as library)
if __name__ == '__main__':
        cmd = ''
        cmdarg = ''
        multitest = {'run': False, 'count': 0, 'delay': 0}
        # loop through the command line arguments
        args = iter(sys.argv[1:])
        for arg in args:
                if(arg == '-m'):
                        try:
                                val = args.next()
                        except:
                                doError('No mode supplied', True)
                        sysvals.suspendmode = val
                elif(arg == '-adb'):
                        try:
                                val = args.next()
                        except:
                                doError('No adb binary supplied', True)
                        if(not os.path.exists(val)):
                                doError('file doesnt exist: %s' % val, False)
                        if(not os.access(val, os.X_OK)):
                                doError('file isnt executable: %s' % val, False)
                        try:
                                check = os.popen(val+' version').read().strip()
                        except:
                                doError('adb version failed to execute', False)
                        if(not re.match('Android Debug Bridge .*', check)):
                                doError('adb version failed to execute', False)
                        sysvals.adb = val
                        sysvals.android = True
                elif(arg == '-x2'):
                        if(sysvals.postresumetime > 0):
                                doError('-x2 is not compatible with -postres', False)
                        sysvals.execcount = 2
                elif(arg == '-x2delay'):
                        sysvals.x2delay = getArgInt('-x2delay', args, 0, 60000)
                elif(arg == '-postres'):
                        if(sysvals.execcount != 1):
                                doError('-x2 is not compatible with -postres', False)
                        sysvals.postresumetime = getArgInt('-postres', args, 0, 3600)
                elif(arg == '-f'):
                        sysvals.usecallgraph = True
                elif(arg == '-modes'):
                        cmd = 'modes'
                elif(arg == '-fpdt'):
                        cmd = 'fpdt'
                elif(arg == '-usbtopo'):
                        cmd = 'usbtopo'
                elif(arg == '-usbauto'):
                        cmd = 'usbauto'
                elif(arg == '-status'):
                        cmd = 'status'
                elif(arg == '-verbose'):
                        sysvals.verbose = True
                elif(arg == '-v'):
                        print("Version %.1f" % sysvals.version)
                        sys.exit()
                elif(arg == '-rtcwake'):
                        sysvals.rtcwake = True
                        sysvals.rtcwaketime = getArgInt('-rtcwake', args, 0, 3600)
                elif(arg == '-multi'):
                        multitest['run'] = True
                        multitest['count'] = getArgInt('-multi n (exec count)', args, 2, 1000000)
                        multitest['delay'] = getArgInt('-multi d (delay between tests)', args, 0, 3600)
                elif(arg == '-dmesg'):
                        try:
                                val = args.next()
                        except:
                                doError('No dmesg file supplied', True)
                        sysvals.notestrun = True
                        sysvals.dmesgfile = val
                        if(os.path.exists(sysvals.dmesgfile) == False):
                                doError('%s doesnt exist' % sysvals.dmesgfile, False)
                elif(arg == '-ftrace'):
                        try:
                                val = args.next()
                        except:
                                doError('No ftrace file supplied', True)
                        sysvals.notestrun = True
                        sysvals.usecallgraph = True
                        sysvals.ftracefile = val
                        if(os.path.exists(sysvals.ftracefile) == False):
                                doError('%s doesnt exist' % sysvals.ftracefile, False)
                elif(arg == '-summary'):
                        try:
                                val = args.next()
                        except:
                                doError('No directory supplied', True)
                        cmd = 'summary'
                        cmdarg = val
                        sysvals.notestrun = True
                        if(os.path.isdir(val) == False):
                                doError('%s isnt accesible' % val, False)
                elif(arg == '-filter'):
                        try:
                                val = args.next()
                        except:
                                doError('No devnames supplied', True)
                        sysvals.setDeviceFilter(val)
                elif(arg == '-h'):
                        printHelp()
                        sys.exit()
                else:
                        doError('Invalid argument: '+arg, True)

        # just run a utility command and exit
        if(cmd != ''):
                if(cmd == 'status'):
                        statusCheck()
                elif(cmd == 'fpdt'):
                        if(sysvals.android):
                                doError('cannot read FPDT on android device', False)
                        getFPDT(True)
                elif(cmd == 'usbtopo'):
                        if(sysvals.android):
                                doError('cannot read USB topology '+\
                                        'on an android device', False)
                        detectUSB(True)
                elif(cmd == 'modes'):
                        modes = getModes()
                        print modes
                elif(cmd == 'usbauto'):
                        setUSBDevicesAuto()
                elif(cmd == 'summary'):
                        print("Generating a summary of folder \"%s\"" % cmdarg)
                        runSummary(cmdarg, True)
                sys.exit()

        # run test on android device
        if(sysvals.android):
                if(sysvals.usecallgraph):
                        doError('ftrace (-f) is not yet supported '+\
                                'in the android kernel', False)
                if(sysvals.notestrun):
                        doError('cannot analyze test files on the '+\
                                'android device', False)

        # if instructed, re-analyze existing data files
        if(sysvals.notestrun):
                rerunTest()
                sys.exit()

        # verify that we can run a test
        if(not statusCheck()):
                print('Check FAILED, aborting the test run!')
                sys.exit()

        if multitest['run']:
                # run multiple tests in a separte subdirectory
                s = 'x%d' % multitest['count']
                subdir = datetime.now().strftime('suspend-'+s+'-%m%d%y-%H%M%S')
                os.mkdir(subdir)
                for i in range(multitest['count']):
                        if(i != 0):
                                print('Waiting %d seconds...' % (multitest['delay']))
                                time.sleep(multitest['delay'])
                        print('TEST (%d/%d) START' % (i+1, multitest['count']))
                        runTest(subdir)
                        print('TEST (%d/%d) COMPLETE' % (i+1, multitest['count']))
                runSummary(subdir, False)
        else:
                # run the test in the current directory
                runTest(".")