David Howells [Tue, 29 Mar 2011 13:05:12 +0000 (14:05 +0100)]
FRV: Missing node arg in alloc_thread_info_node() macro
There are two alloc_thread_info_node() macros defined (one for debugging and
one for normal). The commit that changed them most recently:
commit b6a84016bd2598e35ead635147fa53619982648d
Author: Eric Dumazet <eric.dumazet@gmail.com>
Date: Tue Mar 22 16:30:42 2011 -0700
Subject: mm: NUMA aware alloc_thread_info_node()
didn't add the node argument into the macro argument list for the normal macro.
This results in the following error:
kernel/fork.c:267:39: error: macro "alloc_thread_info_node" passed 2 arguments, but takes just 1
kernel/fork.c: In function 'dup_task_struct':
kernel/fork.c:267: error: 'alloc_thread_info_node' undeclared (first use in this function)
kernel/fork.c:267: error: (Each undeclared identifier is reported only once
kernel/fork.c:267: error: for each function it appears in.)
Signed-off-by: David Howells <dhowells@redhat.com>
Graf Yang [Mon, 28 Mar 2011 11:53:29 +0000 (12:53 +0100)]
NOMMU: support SMP dynamic percpu_alloc
The percpu code requires more functions to be implemented in the mm core
which nommu currently does not provide. So add inline implementations
since these are largely meaningless on nommu systems.
Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Greg Ungerer <gerg@uclinux.org>
David Howells [Mon, 28 Mar 2011 11:53:29 +0000 (12:53 +0100)]
NOMMU: percpu should use is_vmalloc_addr().
per_cpu_ptr_to_phys() uses VMALLOC_START and VMALLOC_END to determine if an
address is in the vmalloc() region or not. This is incorrect on NOMMU as
there is no real vmalloc() capability (vmalloc() is emulated by kmalloc()).
The correct way to do this is to use is_vmalloc_addr(). This encapsulates the
vmalloc() region test in MMU mode and just returns 0 in NOMMU mode.
On FRV in NOMMU mode, the percpu compilation fails without this patch:
mm/percpu.c: In function 'per_cpu_ptr_to_phys':
mm/percpu.c:1011: error: 'VMALLOC_START' undeclared (first use in this function)
mm/percpu.c:1011: error: (Each undeclared identifier is reported only once
mm/percpu.c:1011: error: for each function it appears in.)
mm/percpu.c:1012: error: 'VMALLOC_END' undeclared (first use in this function)
mm/percpu.c:1018: warning: control reaches end of non-void function
Signed-off-by: David Howells <dhowells@redhat.com>
Linus Torvalds [Sat, 26 Mar 2011 04:07:59 +0000 (21:07 -0700)]
Merge branch 'syscore' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6
* 'syscore' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
Introduce ARCH_NO_SYSDEV_OPS config option (v2)
cpufreq: Use syscore_ops for boot CPU suspend/resume (v2)
KVM: Use syscore_ops instead of sysdev class and sysdev
PCI / Intel IOMMU: Use syscore_ops instead of sysdev class and sysdev
timekeeping: Use syscore_ops instead of sysdev class and sysdev
x86: Use syscore_ops instead of sysdev classes and sysdevs
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (55 commits)
[SCSI] tcm_loop: Add multi-fabric Linux/SCSI LLD fabric module
[SCSI] qla4xxx: Use polling mode for disable interrupt mailbox completion
[SCSI] Revert "[SCSI] Retrieve the Caching mode page"
[SCSI] bnx2fc: IO completion not processed due to missed wakeup
[SCSI] qla4xxx: Update driver version to 5.02.00-k6
[SCSI] qla4xxx: masking required bits of add_fw_options during initialization
[SCSI] qla4xxx: added new function qla4xxx_relogin_all_devices
[SCSI] qla4xxx: add support for ql4xsess_recovery_tmo cmd line param
[SCSI] qla4xxx: Add support for ql4xmaxqdepth command line parameter
[SCSI] qla4xxx: cleanup function qla4xxx_process_ddb_changed
[SCSI] qla4xxx: Prevent other port reinitialization during remove_adapter
[SCSI] qla4xxx: remove unused ddb flag DF_NO_RELOGIN
[SCSI] qla4xxx: cleanup DDB relogin logic during initialization
[SCSI] qla4xxx: Do not retry ISP82XX initialization if H/W state is failed
[SCSI] qla4xxx: Do not send mbox command if FW is in failed state
[SCSI] qla4xxx: cleanup qla4xxx_initialize_ddb_list()
[SCSI] ses: add subenclosure support
[SCSI] bnx2fc: Bump version to 1.0.1
[SCSI] bnx2fc: Remove unnecessary module state checks
[SCSI] bnx2fc: Fix MTU issue by using static MTU
...
Linus Torvalds [Sat, 26 Mar 2011 04:04:56 +0000 (21:04 -0700)]
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb:
kdb: add usage string of 'per_cpu' command
kgdb,x86_64: fix compile warning found with sparse
kdb: code cleanup to use macro instead of value
kgdboc,kgdbts: strlen() doesn't count the terminator
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (56 commits)
route: Take the right src and dst addresses in ip_route_newports
ipv4: Fix nexthop caching wrt. scoping.
ipv4: Invalidate nexthop cache nh_saddr more correctly.
net: fix pch_gbe section mismatch warning
ipv4: fix fib metrics
mlx4_en: Removing HW info from ethtool -i report.
net_sched: fix THROTTLED/RUNNING race
drivers/net/a2065.c: Convert release_resource to release_region/release_mem_region
drivers/net/ariadne.c: Convert release_resource to release_region/release_mem_region
bonding: fix rx_handler locking
myri10ge: fix rmmod crash
mlx4_en: updated driver version to 1.5.4.1
mlx4_en: Using blue flame support
mlx4_core: reserve UARs for userspace consumers
mlx4_core: maintain available field in bitmap allocator
mlx4: Add blue flame support for kernel consumers
mlx4_en: Enabling new steering
mlx4: Add support for promiscuous mode in the new steering model.
mlx4: generalization of multicast steering.
mlx4_en: Reporting HW revision in ethtool -i
...
Linus Torvalds [Sat, 26 Mar 2011 04:01:43 +0000 (21:01 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
PCI: Disable ASPM when _OSC control is not granted for PCIe services
PCI: Changing ASPM policy, via /sys, to POWERSAVE could cause NMIs
PCI: PCIe links may not get configured for ASPM under POWERSAVE mode
PCI/ACPI: Report ASPM support to BIOS if not disabled from command line
Linus Torvalds [Sat, 26 Mar 2011 04:00:29 +0000 (21:00 -0700)]
Merge git://git.infradead.org/battery-2.6
* git://git.infradead.org/battery-2.6: (30 commits)
bq20z75: Fix time and temp units
bq20z75: Fix issues with present and suspend
z2_battery: Fix count of properties
s3c_adc_battery: Fix method names when PM not set
z2_battery: Add MODULE_DEVICE_TABLE
ds2782_battery: Add MODULE_DEVICE_TABLE
bq20z75: Add MODULE_DEVICE_TABLE
power_supply: Update power_supply_is_watt_property
bq20z75: Add i2c retry mechanism
bq20z75: Add optional battery detect gpio
twl4030_charger: Make the driver atomic notifier safe
bq27x00: Use single i2c_transfer call for property read
bq27x00: Cleanup bq27x00_i2c_read
bq27x00: Minor cleanups
bq27x00: Give more specific reports on battery status
bq27x00: Add MODULE_DEVICE_TABLE
bq27x00: Add new properties
bq27x00: Poll battery state
bq27x00: Cache battery registers
bq27x00: Add bq27000 support
...
* git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm:
dm stripe: implement merge method
dm mpath: allow table load with no priority groups
dm mpath: fail message ioctl if specified path is not valid
dm ioctl: add flag to wipe buffers for secure data
dm ioctl: prepare for crypt key wiping
dm crypt: wipe keys string immediately after key is set
dm: add flakey target
dm: fix opening log and cow devices for read only tables
Linus Torvalds [Sat, 26 Mar 2011 03:50:12 +0000 (20:50 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: tsc2005 - fix locking issue
Input: tsc2005 - use relative jiffies to schedule the watchdog
Input: tsc2005 - driver should depend on GENERIC_HARDIRQS
Linus Torvalds [Sat, 26 Mar 2011 00:53:09 +0000 (17:53 -0700)]
Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
perf, x86: Complain louder about BIOSen corrupting CPU/PMU state and continue
perf, x86: P4 PMU - Read proper MSR register to catch unflagged overflows
perf symbols: Look at .dynsym again if .symtab not found
perf build-id: Add quirk to deal with perf.data file format breakage
perf session: Pass evsel in event_ops->sample()
perf: Better fit max unprivileged mlock pages for tools needs
perf_events: Fix stale ->cgrp pointer in update_cgrp_time_from_cpuctx()
perf top: Fix uninitialized 'counter' variable
tracing: Fix set_ftrace_filter probe function display
perf, x86: Fix Intel fixed counters base initialization
Linus Torvalds [Sat, 26 Mar 2011 00:52:53 +0000 (17:52 -0700)]
Merge branch 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
genirq: Provide locked setter for chip, handler, name
genirq: Provide a lockdep helper
genirq; Remove the last leftovers of the old sparse irq code
Linus Torvalds [Sat, 26 Mar 2011 00:52:22 +0000 (17:52 -0700)]
Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
futex: Fix WARN_ON() test for UP
WARN_ON_SMP(): Allow use in if() statements on UP
x86, dumpstack: Use %pB format specifier for stack trace
vsprintf: Introduce %pB format specifier
lockdep: Remove unused 'factor' variable from lockdep_stats_show()
Linus Torvalds [Sat, 26 Mar 2011 00:47:04 +0000 (17:47 -0700)]
Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
[S390] cmpxchg: implement cmpxchg64()
[S390] xchg/cmpxchg: move to own header file
[S390] ccwgroup_driver: remove duplicate members
[S390] ccw_bus_type: make it static
[S390] ccw_driver: remove duplicate members
[S390] qdio: prevent handling of buffers if count is zero
[S390] setup: register bss section as resource
[S390] setup: simplify setup_resources()
[S390] wire up sys_syncfs
[S390] wire up sys_clock_adjtime
[S390] wire up sys_open_by_handle_at
[S390] wire up sys_name_to_handle_at
[S390] oprofile: disable hw sampling for CONFIG_32BIT
[S390] early: limit savesys cmd string handling
[S390] early: Fix possible overlapping data buffer
Linus Torvalds [Sat, 26 Mar 2011 00:46:34 +0000 (17:46 -0700)]
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus
* 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus: (49 commits)
MIPS: JZ4740: Set nand ecc offsets for the qi_lb60 board
MIPS: JZ4740: qi_lb60: Add gpio-charger device
MIPS: Wire up syncfs(2).
MIPS: Hook up name_to_handle_at, open_by_handle_at and clock_adjtime syscalls.
MIPS: VR41xx: Convert to new irq_chip functions
MIPS: TXx9: Convert to new irq_chip functions
MIPS: SNI: Convert to new irq_chip functions
MIPS: Sibyte: Convert to new irq_chip functions
MIPS: IP32: Convert to new irq_chip functions
MIPS: IP27: Convert to new irq_chip functions
MIPS: IP22/IP28: Convert to new irq_chip functions
MIPS: RB532: Convert to new irq_chip functions
MIPS: PowerTV: Convert to new irq_chip functions
MIPS: PNX8550: Convert to new irq_chip functions
MIPS: PNX83xx: Convert to new irq_chip functions
MIPS: msp71xx: Convert to new irq_chip functions
MIPS: Loongson: Convert to new irq_chip functions
MIPS: Use generic show_interrupts()
MIPS: SMTC: Cleanup the hook mess and use irq_data
MIPS: SMTC: Use irq_data in smtc_forward_irq()
...
Xiaotian Feng [Fri, 25 Mar 2011 08:57:01 +0000 (01:57 -0700)]
ipcns: fix use after free in free_ipc_ns()
commit b515498 ("userns: add a user namespace owner of ipc ns") added a
user namespace owner of ipc ns, but it also introduced a use after free in
free_ipc_ns().
Signed-off-by: Xiaotian Feng <dfeng@redhat.com> Acked-by: "Serge E. Hallyn" <serge.hallyn@canonical.com> Acked-by: David Howells <dhowells@redhat.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Daniel Lezcano <daniel.lezcano@free.fr> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rakib Mullick [Fri, 25 Mar 2011 08:57:01 +0000 (01:57 -0700)]
codafs: fix build break when CONFIG_PROC_SYSCTL=n
Commit 0bc825d240ab ("codafs: fix compile warning when CONFIG_SYSCTL=n")
introduces build breakage, when CONFIG_PROC_SYSCTL=n and
CONFIG_CODA_FS=y:
fs/built-in.o: In function `init_coda':
psdev.c:(.init.text+0xc02): undefined reference to `coda_sysctl_init'
psdev.c:(.init.text+0xc7c): undefined reference to `coda_sysctl_clean'
fs/built-in.o: In function `exit_coda':
psdev.c:(.exit.text+0xa9): undefined reference to `coda_sysctl_clean'
make: *** [.tmp_vmlinux1] Error 1
Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com> Reported-by: Ingo Molnar <mingo@elte.hu> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
MIPS: JZ4740: Cleanup the mechanical irq_chip conversion
The conversion did not make use of the new chip flag which signals the
core code to mask the chip before calling the set_type callback. Sigh.
Use the new lockdep helper as well.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2183/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
MIPS: JZ4740: GPIO: Use shared irq chip for all gpios
Currently there is one irq_chip per gpio_chip with the only difference
being the name. Since the information whether the irq belong to GPIO
bank A, B, C or D is not that important rewrite the code to simply use
a single irq_chip for all gpio_chips.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2182/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Thomas Gleixner [Wed, 23 Mar 2011 21:08:44 +0000 (21:08 +0000)]
MIPS: Alchemy: Convert to new irq chip functions
Fix the deadlock in set_type() while at it:
The code called set_irq_chip_and_handler_name() resp. set_irq_chip()
from the set_type() callback. That only works on UP and lock debugging
disabled. Otherwise it would dead lock on desc->lock.
__irq_set_chip_handler_name_locked() avoids that.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2173/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Anoop P A [Tue, 25 Jan 2011 08:23:17 +0000 (13:53 +0530)]
MIPS: MSP71xx: Add CPU feature override file.
Signed-off-by: Anoop P A <anoop.pa@gmail.com>
To: linux-mips@linux-mips.org
To: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/2045/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Anoop P A [Tue, 25 Jan 2011 17:54:09 +0000 (23:24 +0530)]
MIPS: MSP71xx: Platform support for On-chip MSP ethernet devices.
Some of MSP family SoC's come with legacy 100Mbps mspeth while some comes
with newer Gigabit TSMAC.Following patch adds platform support for both
types of MAC's.
If TSMAC is not selected assume platform having legacy mspeth. Add
gpio_macros as well which is required for resetting the PHY.
[Ralf: Killed all typedefs.]
Signed-off-by: Anoop P A <anoop.pa@gmail.com>
To: linux-mips@linux-mips.org
To: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/2048/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Anoop P A [Tue, 25 Jan 2011 08:22:05 +0000 (13:52 +0530)]
MIPS: MSP71xx: Platform support for MSP on-chip USB controller.
Signed-off-by: Anoop P A <anoop.pa@gmail.com>
To: linux-mips@linux-mips.org
To: linux-kernel@vger.kernel.org Cc: Anoop P A <anoop.pa@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/2043/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Anoop P A [Tue, 25 Jan 2011 08:21:03 +0000 (13:51 +0530)]
MIPS: MSP71xx: Add VSMP/SMTC support.
[Ralf: Fixed more checkpatch assertions and inclusion of unnecessary header
<linux/sched.h>.]
Signed-off-by: Anoop P A <anoop.pa@gmail.com>
To: linux-mips@linux-mips.org
To: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/2042/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Anoop P A [Tue, 25 Jan 2011 08:20:10 +0000 (13:50 +0530)]
MIPS: MSP71xx: Add vectored interrupt support.
This patch will add vectored interrupt setups required for MIPS MT modes.
irq_cic has been restructured and moved per irq handler to different file.
irq_cic has been re wrote to support mips MT modes ( VSMP / SMTC )
[Ralf: fixed some more checkpatch warnings.]
Signed-off-by: Anoop P A <anoop.pa@gmail.com>
To: linux-mips@linux-mips.org
To: linux-kernel@vger.kernel.org
To: dhowells@redhat.com
Patchwork: https://patchwork.linux-mips.org/patch/2041/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Linus Torvalds [Fri, 25 Mar 2011 16:57:40 +0000 (09:57 -0700)]
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (43 commits)
ext4: fix a BUG in mb_mark_used during trim.
ext4: unused variables cleanup in fs/ext4/extents.c
ext4: remove redundant set_buffer_mapped() in ext4_da_get_block_prep()
ext4: add more tracepoints and use dev_t in the trace buffer
ext4: don't kfree uninitialized s_group_info members
ext4: add missing space in printk's in __ext4_grp_locked_error()
ext4: add FITRIM to compat_ioctl.
ext4: handle errors in ext4_clear_blocks()
ext4: unify the ext4_handle_release_buffer() api
ext4: handle errors in ext4_rename
jbd2: add COW fields to struct jbd2_journal_handle
jbd2: add the b_cow_tid field to journal_head struct
ext4: Initialize fsync transaction ids in ext4_new_inode()
ext4: Use single thread to perform DIO unwritten convertion
ext4: optimize ext4_bio_write_page() when no extent conversion is needed
ext4: skip orphan cleanup if fs has unknown ROCOMPAT features
ext4: use the nblocks arg to ext4_truncate_restart_trans()
ext4: fix missing iput of root inode for some mount error paths
ext4: make FIEMAP and delayed allocation play well together
ext4: suppress verbose debugging information if malloc-debug is off
...
Fi up conflicts in fs/ext4/super.c due to workqueue changes
Linus Torvalds [Fri, 25 Mar 2011 16:36:35 +0000 (09:36 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
block: fix issue with calling blk_stop_queue() from the request_fn handler
block: fix bug with inserting flush requests as sort/merge
Thomas Gleixner [Fri, 25 Mar 2011 15:48:50 +0000 (16:48 +0100)]
genirq: Expand generic show_interrupts()
Some archs want to print extra information for certain irq_chips which
is per irq and not per chip. Allow them to provide a chip callback to
print the chip name and the extra information.
PowerPC wants to print the LEVEL/EDGE type information. Make it configurable.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Jens Axboe [Fri, 25 Mar 2011 15:58:59 +0000 (16:58 +0100)]
block: fix issue with calling blk_stop_queue() from the request_fn handler
When the queue work handler was converted to delayed work, the
stopping was inadvertently made sync as well. Change this back
to being async stop, using __cancel_delayed_work() instead of
cancel_delayed_work().
Reported-by: Jeremy Fitzhardinge <jeremy@goop.org> Reported-by: Chris Mason <chris.mason@oracle.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Jens Axboe [Fri, 25 Mar 2011 15:57:52 +0000 (16:57 +0100)]
block: fix bug with inserting flush requests as sort/merge
With the introduction of the on-stack plugging, we would assume
that any request being inserted was a normal file system request.
As flush/fua requires a special insert mode, this caused problems.
Fix this up by checking for this in flush_plug_list() and use
the appropriate insert mechanism.
Big thanks goes to Markus Tripplesdorf for tirelessly testing
patches, and to Sergey Senozhatsky for helping find the real
issue.
Reported-by: Markus Tripplesdorf <markus@trippelsdorf.de> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Steven Rostedt [Thu, 17 Mar 2011 19:21:07 +0000 (15:21 -0400)]
futex: Fix WARN_ON() test for UP
An update of the futex code had a
WARN_ON(!spin_is_locked(q->lock_ptr))
But on UP, spin_is_locked() is always false, and will
trigger this warning, and even worse, it will exit the function
without doing the necessary work.
Converting this to a WARN_ON_SMP() fixes the problem.
Reported-by: Richard Weinberger <richard@nod.at> Tested-by: Richard Weinberger <richard@nod.at> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Acked-by: Darren Hart <dvhart@linux.intel.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
LKML-Reference: <20110317192208.682654502@goodmis.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Ingo Molnar [Fri, 25 Mar 2011 09:24:23 +0000 (10:24 +0100)]
perf, x86: Complain louder about BIOSen corrupting CPU/PMU state and continue
Eric Dumazet reported that hardware PMU events do not work on his
system, due to the BIOS corrupting PMU state:
Performance Events: PEBS fmt0+, Core2 events, Broken BIOS detected, using software events only.
[Firmware Bug]: the BIOS has corrupted hw-PMU resources (MSR 186 is 43003c)
Linus suggested that we continue in the face of such BIOS-induced CPU
state corruption:
http://lkml.org/lkml/2011/3/24/608
Such BIOSes will have to be fixed - Linux developers rely on a working and
fully capable PMU and the BIOS interfering with the CPU's PMU state is simply
not acceptable.
So this patch changes perf to continue when it detects such BIOS
interaction, some hardware events may be unreliable due to the BIOS
writing and re-writing them - there's not much the kernel can do
about that but to detect the corruption and report it.
Reported-and-tested-by: Eric Dumazet <eric.dumazet@gmail.com> Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Steffen Klassert [Fri, 25 Mar 2011 08:28:45 +0000 (01:28 -0700)]
route: Take the right src and dst addresses in ip_route_newports
When we set up the flow informations in ip_route_newports(), we take
the address informations from the the rt_key_src and rt_key_dst fields
of the rtable. They appear to be empty. So take the address
informations from rt_src and rt_dst instead. This issue was introduced
by commit 5e2b61f78411be25f0b84f97d5b5d312f184dfd1 ("ipv4: Remove
flowi from struct rtable.")
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Greg Ungerer [Tue, 22 Mar 2011 03:39:27 +0000 (13:39 +1000)]
m68k: merge m68k and m68knommu arch directories
There is a lot of common code that could be shared between the m68k
and m68knommu arch branches. It makes sense to merge the two branches
into a single directory structure so that we can more easily share
that common code.
This is a brute force merge, based on a script from Stephen King
<sfking@fdwdc.com>, which was originally written by Arnd Bergmann
<arnd@arndb.de>.
> The script was inspired by the script Sam Ravnborg used to merge the
> includes from m68knommu. For those files common to both arches but
> differing in content, the m68k version of the file is renamed to
> <file>_mm.<ext> and the m68knommu version of the file is moved into the
> corresponding m68k directory and renamed <file>_no.<ext> and a small
> wrapper file <file>.<ext> is used to select between the two version. Files
> that are common to both but don't differ are removed from the m68knommu
> tree and files and directories that are unique to the m68knommu tree are
> moved to the m68k tree. Finally, the arch/m68knommu tree is removed.
>
> To select between the the versions of the files, the wrapper uses
>
> #ifdef CONFIG_MMU
> #include <file>_mm.<ext>
> #else
> #include <file>_no.<ext>
> #endif
On top of this file merge I have done a simplistic merge of m68k and
m68knommu Kconfig, which primarily attempts to keep existing options and
menus in place. Other than a handful of options being moved it produces
identical .config outputs on m68k and m68knommu targets I tested it on.
With this in place there is now quite a bit of scope for merge cleanups
in future patches.
Linus Torvalds [Fri, 25 Mar 2011 02:01:30 +0000 (19:01 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
fs: simplify iget & friends
fs: pull inode->i_lock up out of writeback_single_inode
fs: rename inode_lock to inode_hash_lock
fs: move i_wb_list out from under inode_lock
fs: move i_sb_list out from under inode_lock
fs: remove inode_lock from iput_final and prune_icache
fs: Lock the inode LRU list separately
fs: factor inode disposal
fs: protect inode->i_state with inode->i_lock
autofs4: Do not potentially dereference NULL pointer returned by fget() in autofs_dev_ioctl_setpipefd()
autofs4 - remove autofs4_lock
autofs4 - fix d_manage() return on rcu-walk
autofs4 - fix autofs4_expire_indirect() traversal
autofs4 - fix dentry leak in autofs4_expire_direct()
autofs4 - reinstate last used update on access
vfs - check non-mountpoint dentry might block in __follow_mount_rcu()
Stephen Rothwell [Fri, 25 Mar 2011 01:30:05 +0000 (12:30 +1100)]
[media] rc: update for bitop name changes
Fix the following compile failure:
drivers/media/rc/ite-cir.c: In function 'ite_decode_bytes':
drivers/media/rc/ite-cir.c:190: error: implicit declaration of function 'generic_find_next_le_bit'
drivers/media/rc/ite-cir.c:199: error: implicit declaration of function 'generic_find_next_zero_le_bit'
Caused by commit 620a32bba4a2 ("[media] rc: New rc-based ite-cir driver
for several ITE CIRs") interacting with commit c4945b9ed472
("asm-generic: rename generic little-endian bitops functions").
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Merge get_new_inode/get_new_inode_fast into iget5_locked/iget_locked
as those were the only callers. Remove the internal ifind/ifind_fast
helpers - ifind_fast only had a single caller, and ifind had two
callers wanting it to do different things. Also clean up the comments
in this area to focus on information important to a developer trying
to use it, instead of overloading them with implementation details.
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Dave Chinner [Tue, 22 Mar 2011 11:23:43 +0000 (22:23 +1100)]
fs: pull inode->i_lock up out of writeback_single_inode
First thing we do in writeback_single_inode() is take the i_lock and
the last thing we do is drop it. A caller already holds the i_lock,
so pull the i_lock out of writeback_single_inode() to reduce the
round trips on this lock during inode writeback.
Signed-off-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Dave Chinner [Tue, 22 Mar 2011 11:23:42 +0000 (22:23 +1100)]
fs: rename inode_lock to inode_hash_lock
All that remains of the inode_lock is protecting the inode hash list
manipulation and traversals. Rename the inode_lock to
inode_hash_lock to reflect it's actual function.
Signed-off-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Dave Chinner [Tue, 22 Mar 2011 11:23:41 +0000 (22:23 +1100)]
fs: move i_wb_list out from under inode_lock
Protect the inode writeback list with a new global lock
inode_wb_list_lock and use it to protect the list manipulations and
traversals. This lock replaces the inode_lock as the inodes on the
list can be validity checked while holding the inode->i_lock and
hence the inode_lock is no longer needed to protect the list.
Signed-off-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Dave Chinner [Tue, 22 Mar 2011 11:23:40 +0000 (22:23 +1100)]
fs: move i_sb_list out from under inode_lock
Protect the per-sb inode list with a new global lock
inode_sb_list_lock and use it to protect the list manipulations and
traversals. This lock replaces the inode_lock as the inodes on the
list can be validity checked while holding the inode->i_lock and
hence the inode_lock is no longer needed to protect the list.
Signed-off-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Dave Chinner [Tue, 22 Mar 2011 11:23:39 +0000 (22:23 +1100)]
fs: remove inode_lock from iput_final and prune_icache
Now that inode state changes are protected by the inode->i_lock and
the inode LRU manipulations by the inode_lru_lock, we can remove the
inode_lock from prune_icache and the initial part of iput_final().
instead of using the inode_lock to protect the inode during
iput_final, use the inode->i_lock instead. This protects the inode
against new references being taken while we change the inode state
to I_FREEING, as well as preventing prune_icache from grabbing the
inode while we are manipulating it. Hence we no longer need the
inode_lock in iput_final prior to setting I_FREEING on the inode.
For prune_icache, we no longer need the inode_lock to protect the
LRU list, and the inodes themselves are protected against freeing
races by the inode->i_lock. Hence we can lift the inode_lock from
prune_icache as well.
Signed-off-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Dave Chinner [Tue, 22 Mar 2011 11:23:38 +0000 (22:23 +1100)]
fs: Lock the inode LRU list separately
Introduce the inode_lru_lock to protect the inode_lru list. This
lock is nested inside the inode->i_lock to allow the inode to be
added to the LRU list in iput_final without needing to deal with
lock inversions. This keeps iput_final() clean and neat.
Further, where marking the inode I_FREEING and removing it from the
LRU, move the LRU list manipulation within the inode->i_lock to keep
the list manipulation consistent with iput_final. This also means
that most of the open coded LRU list removal + unused inode
accounting can now use the inode_lru_list_del() wrappers which
cleans the code up further.
However, this locking change means what the LRU traversal in
prune_icache() inverts this lock ordering and needs to use trylock
semantics on the inode->i_lock to avoid deadlocking. In these cases,
if we fail to lock the inode we move it to the back of the LRU to
prevent spinning on it.
Signed-off-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
projects / mirror_ubuntu-eoan-kernel.git / log