tools/perf/perf.h

   1 #ifndef _PERF_PERF_H
   2 #define _PERF_PERF_H
   3
   4 #include <asm/unistd.h>
   5
   6 #if defined(__i386__)
   7 #define mb()            asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
   8 #define wmb()           asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
   9 #define rmb()           asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
  10 #define cpu_relax()     asm volatile("rep; nop" ::: "memory");
  11 #define CPUINFO_PROC    "model name"
  12 #ifndef __NR_perf_event_open
  13 # define __NR_perf_event_open 336
  14 #endif
  15 #endif
  16
  17 #if defined(__x86_64__)
  18 #define mb()            asm volatile("mfence" ::: "memory")
  19 #define wmb()           asm volatile("sfence" ::: "memory")
  20 #define rmb()           asm volatile("lfence" ::: "memory")
  21 #define cpu_relax()     asm volatile("rep; nop" ::: "memory");
  22 #define CPUINFO_PROC    "model name"
  23 #ifndef __NR_perf_event_open
  24 # define __NR_perf_event_open 298
  25 #endif
  26 #endif
  27
  28 #ifdef __powerpc__
  29 #include "../../arch/powerpc/include/uapi/asm/unistd.h"
  30 #define mb()            asm volatile ("sync" ::: "memory")
  31 #define wmb()           asm volatile ("sync" ::: "memory")
  32 #define rmb()           asm volatile ("sync" ::: "memory")
  33 #define CPUINFO_PROC    "cpu"
  34 #endif
  35
  36 #ifdef __s390__
  37 #define mb()            asm volatile("bcr 15,0" ::: "memory")
  38 #define wmb()           asm volatile("bcr 15,0" ::: "memory")
  39 #define rmb()           asm volatile("bcr 15,0" ::: "memory")
  40 #endif
  41
  42 #ifdef __sh__
  43 #if defined(__SH4A__) || defined(__SH5__)
  44 # define mb()           asm volatile("synco" ::: "memory")
  45 # define wmb()          asm volatile("synco" ::: "memory")
  46 # define rmb()          asm volatile("synco" ::: "memory")
  47 #else
  48 # define mb()           asm volatile("" ::: "memory")
  49 # define wmb()          asm volatile("" ::: "memory")
  50 # define rmb()          asm volatile("" ::: "memory")
  51 #endif
  52 #define CPUINFO_PROC    "cpu type"
  53 #endif
  54
  55 #ifdef __hppa__
  56 #define mb()            asm volatile("" ::: "memory")
  57 #define wmb()           asm volatile("" ::: "memory")
  58 #define rmb()           asm volatile("" ::: "memory")
  59 #define CPUINFO_PROC    "cpu"
  60 #endif
  61
  62 #ifdef __sparc__
  63 #ifdef __LP64__
  64 #define mb()            asm volatile("ba,pt %%xcc, 1f\n"        \
  65                                      "membar #StoreLoad\n"      \
  66                                      "1:\n":::"memory")
  67 #else
  68 #define mb()            asm volatile("":::"memory")
  69 #endif
  70 #define wmb()           asm volatile("":::"memory")
  71 #define rmb()           asm volatile("":::"memory")
  72 #define CPUINFO_PROC    "cpu"
  73 #endif
  74
  75 #ifdef __alpha__
  76 #define mb()            asm volatile("mb" ::: "memory")
  77 #define wmb()           asm volatile("wmb" ::: "memory")
  78 #define rmb()           asm volatile("mb" ::: "memory")
  79 #define CPUINFO_PROC    "cpu model"
  80 #endif
  81
  82 #ifdef __ia64__
  83 #define mb()            asm volatile ("mf" ::: "memory")
  84 #define wmb()           asm volatile ("mf" ::: "memory")
  85 #define rmb()           asm volatile ("mf" ::: "memory")
  86 #define cpu_relax()     asm volatile ("hint @pause" ::: "memory")
  87 #define CPUINFO_PROC    "model name"
  88 #endif
  89
  90 #ifdef __arm__
  91 /*
  92  * Use the __kuser_memory_barrier helper in the CPU helper page. See
  93  * arch/arm/kernel/entry-armv.S in the kernel source for details.
  94  */
  95 #define mb()            ((void(*)(void))0xffff0fa0)()
  96 #define wmb()           ((void(*)(void))0xffff0fa0)()
  97 #define rmb()           ((void(*)(void))0xffff0fa0)()
  98 #define CPUINFO_PROC    "Processor"
  99 #endif
 100
 101 #ifdef __aarch64__
 102 #define mb()            asm volatile("dmb ish" ::: "memory")
 103 #define wmb()           asm volatile("dmb ishst" ::: "memory")
 104 #define rmb()           asm volatile("dmb ishld" ::: "memory")
 105 #define cpu_relax()     asm volatile("yield" ::: "memory")
 106 #endif
 107
 108 #ifdef __mips__
 109 #define mb()            asm volatile(                                   \
 110                                 ".set   mips2\n\t"                      \
 111                                 "sync\n\t"                              \
 112                                 ".set   mips0"                          \
 113                                 : /* no output */                       \
 114                                 : /* no input */                        \
 115                                 : "memory")
 116 #define wmb()   mb()
 117 #define rmb()   mb()
 118 #define CPUINFO_PROC    "cpu model"
 119 #endif
 120
 121 #ifdef __arc__
 122 #define mb()            asm volatile("" ::: "memory")
 123 #define wmb()           asm volatile("" ::: "memory")
 124 #define rmb()           asm volatile("" ::: "memory")
 125 #define CPUINFO_PROC    "Processor"
 126 #endif
 127
 128 #ifdef __metag__
 129 #define mb()            asm volatile("" ::: "memory")
 130 #define wmb()           asm volatile("" ::: "memory")
 131 #define rmb()           asm volatile("" ::: "memory")
 132 #define CPUINFO_PROC    "CPU"
 133 #endif
 134
 135 #ifdef __xtensa__
 136 #define mb()            asm volatile("memw" ::: "memory")
 137 #define wmb()           asm volatile("memw" ::: "memory")
 138 #define rmb()           asm volatile("" ::: "memory")
 139 #define CPUINFO_PROC    "core ID"
 140 #endif
 141
 142 #define barrier() asm volatile ("" ::: "memory")
 143
 144 #ifndef cpu_relax
 145 #define cpu_relax() barrier()
 146 #endif
 147
 148 #define ACCESS_ONCE(x) (*(volatile typeof(x) *)&(x))
 149
 150
 151 #include <time.h>
 152 #include <unistd.h>
 153 #include <sys/types.h>
 154 #include <sys/syscall.h>
 155
 156 #include <linux/perf_event.h>
 157 #include "util/types.h"
 158 #include <stdbool.h>
 159
 160 /*
 161  * prctl(PR_TASK_PERF_EVENTS_DISABLE) will (cheaply) disable all
 162  * counters in the current task.
 163  */
 164 #define PR_TASK_PERF_EVENTS_DISABLE   31
 165 #define PR_TASK_PERF_EVENTS_ENABLE    32
 166
 167 #ifndef NSEC_PER_SEC
 168 # define NSEC_PER_SEC                   1000000000ULL
 169 #endif
 170 #ifndef NSEC_PER_USEC
 171 # define NSEC_PER_USEC                  1000ULL
 172 #endif
 173
 174 static inline unsigned long long rdclock(void)
 175 {
 176         struct timespec ts;
 177
 178         clock_gettime(CLOCK_MONOTONIC, &ts);
 179         return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
 180 }
 181
 182 /*
 183  * Pick up some kernel type conventions:
 184  */
 185 #define __user
 186 #define asmlinkage
 187
 188 #define unlikely(x)     __builtin_expect(!!(x), 0)
 189 #define min(x, y) ({                            \
 190         typeof(x) _min1 = (x);                  \
 191         typeof(y) _min2 = (y);                  \
 192         (void) (&_min1 == &_min2);              \
 193         _min1 < _min2 ? _min1 : _min2; })
 194
 195 extern bool test_attr__enabled;
 196 void test_attr__init(void);
 197 void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu,
 198                      int fd, int group_fd, unsigned long flags);
 199
 200 static inline int
 201 sys_perf_event_open(struct perf_event_attr *attr,
 202                       pid_t pid, int cpu, int group_fd,
 203                       unsigned long flags)
 204 {
 205         int fd;
 206
 207         fd = syscall(__NR_perf_event_open, attr, pid, cpu,
 208                      group_fd, flags);
 209
 210         if (unlikely(test_attr__enabled))
 211                 test_attr__open(attr, pid, cpu, fd, group_fd, flags);
 212
 213         return fd;
 214 }
 215
 216 #define MAX_COUNTERS                    256
 217 #define MAX_NR_CPUS                     256
 218
 219 struct ip_callchain {
 220         u64 nr;
 221         u64 ips[0];
 222 };
 223
 224 struct branch_flags {
 225         u64 mispred:1;
 226         u64 predicted:1;
 227         u64 in_tx:1;
 228         u64 abort:1;
 229         u64 reserved:60;
 230 };
 231
 232 struct branch_entry {
 233         u64                             from;
 234         u64                             to;
 235         struct branch_flags flags;
 236 };
 237
 238 struct branch_stack {
 239         u64                             nr;
 240         struct branch_entry     entries[0];
 241 };
 242
 243 extern const char *input_name;
 244 extern bool perf_host, perf_guest;
 245 extern const char perf_version_string[];
 246
 247 void pthread__unblock_sigwinch(void);
 248
 249 #include "util/target.h"
 250
 251 enum perf_call_graph_mode {
 252         CALLCHAIN_NONE,
 253         CALLCHAIN_FP,
 254         CALLCHAIN_DWARF
 255 };
 256
 257 struct record_opts {
 258         struct target target;
 259         int          call_graph;
 260         bool         group;
 261         bool         inherit_stat;
 262         bool         no_buffering;
 263         bool         no_inherit;
 264         bool         no_inherit_set;
 265         bool         no_samples;
 266         bool         raw_samples;
 267         bool         sample_address;
 268         bool         sample_weight;
 269         bool         sample_time;
 270         bool         period;
 271         unsigned int freq;
 272         unsigned int mmap_pages;
 273         unsigned int user_freq;
 274         u64          branch_stack;
 275         u64          default_interval;
 276         u64          user_interval;
 277         u16          stack_dump_size;
 278         bool         sample_transaction;
 279         unsigned     initial_delay;
 280 };
 281
 282 #endif