tools/perf/perf.h

   1 #ifndef _PERF_PERF_H
   2 #define _PERF_PERF_H
   3
   4 #if defined(__i386__)
   5 #include "../../arch/x86/include/asm/unistd.h"
   6 #define rmb()           asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
   7 #define cpu_relax()     asm volatile("rep; nop" ::: "memory");
   8 #endif
   9
  10 #if defined(__x86_64__)
  11 #include "../../arch/x86/include/asm/unistd.h"
  12 #define rmb()           asm volatile("lfence" ::: "memory")
  13 #define cpu_relax()     asm volatile("rep; nop" ::: "memory");
  14 #endif
  15
  16 #ifdef __powerpc__
  17 #include "../../arch/powerpc/include/asm/unistd.h"
  18 #define rmb()           asm volatile ("sync" ::: "memory")
  19 #define cpu_relax()     asm volatile ("" ::: "memory");
  20 #endif
  21
  22 #ifdef __s390__
  23 #include "../../arch/s390/include/asm/unistd.h"
  24 #define rmb()           asm volatile("bcr 15,0" ::: "memory")
  25 #define cpu_relax()     asm volatile("" ::: "memory");
  26 #endif
  27
  28 #ifdef __sh__
  29 #include "../../arch/sh/include/asm/unistd.h"
  30 #if defined(__SH4A__) || defined(__SH5__)
  31 # define rmb()          asm volatile("synco" ::: "memory")
  32 #else
  33 # define rmb()          asm volatile("" ::: "memory")
  34 #endif
  35 #define cpu_relax()     asm volatile("" ::: "memory")
  36 #endif
  37
  38 #ifdef __hppa__
  39 #include "../../arch/parisc/include/asm/unistd.h"
  40 #define rmb()           asm volatile("" ::: "memory")
  41 #define cpu_relax()     asm volatile("" ::: "memory");
  42 #endif
  43
  44 #include <time.h>
  45 #include <unistd.h>
  46 #include <sys/types.h>
  47 #include <sys/syscall.h>
  48
  49 #include "../../include/linux/perf_counter.h"
  50 #include "util/types.h"
  51
  52 /*
  53  * prctl(PR_TASK_PERF_COUNTERS_DISABLE) will (cheaply) disable all
  54  * counters in the current task.
  55  */
  56 #define PR_TASK_PERF_COUNTERS_DISABLE   31
  57 #define PR_TASK_PERF_COUNTERS_ENABLE    32
  58
  59 #ifndef NSEC_PER_SEC
  60 # define NSEC_PER_SEC                   1000000000ULL
  61 #endif
  62
  63 static inline unsigned long long rdclock(void)
  64 {
  65         struct timespec ts;
  66
  67         clock_gettime(CLOCK_MONOTONIC, &ts);
  68         return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
  69 }
  70
  71 /*
  72  * Pick up some kernel type conventions:
  73  */
  74 #define __user
  75 #define asmlinkage
  76
  77 #define __used          __attribute__((__unused__))
  78
  79 #define unlikely(x)     __builtin_expect(!!(x), 0)
  80 #define min(x, y) ({                            \
  81         typeof(x) _min1 = (x);                  \
  82         typeof(y) _min2 = (y);                  \
  83         (void) (&_min1 == &_min2);              \
  84         _min1 < _min2 ? _min1 : _min2; })
  85
  86 static inline int
  87 sys_perf_counter_open(struct perf_counter_attr *attr,
  88                       pid_t pid, int cpu, int group_fd,
  89                       unsigned long flags)
  90 {
  91         attr->size = sizeof(*attr);
  92         return syscall(__NR_perf_counter_open, attr, pid, cpu,
  93                        group_fd, flags);
  94 }
  95
  96 #define MAX_COUNTERS                    256
  97 #define MAX_NR_CPUS                     256
  98
  99 struct ip_callchain {
 100         u64 nr;
 101         u64 ips[0];
 102 };
 103
 104 #endif