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 #ifdef __sparc__
  45 #include "../../arch/sparc/include/asm/unistd.h"
  46 #define rmb()           asm volatile("":::"memory")
  47 #define cpu_relax()     asm volatile("":::"memory")
  48 #endif
  49
  50 #ifdef __alpha__
  51 #include "../../arch/alpha/include/asm/unistd.h"
  52 #define rmb()           asm volatile("mb" ::: "memory")
  53 #define cpu_relax()     asm volatile("" ::: "memory")
  54 #endif
  55
  56 #ifdef __ia64__
  57 #include "../../arch/ia64/include/asm/unistd.h"
  58 #define rmb()           asm volatile ("mf" ::: "memory")
  59 #define cpu_relax()     asm volatile ("hint @pause" ::: "memory")
  60 #endif
  61
  62 #ifdef __arm__
  63 #include "../../arch/arm/include/asm/unistd.h"
  64 /*
  65  * Use the __kuser_memory_barrier helper in the CPU helper page. See
  66  * arch/arm/kernel/entry-armv.S in the kernel source for details.
  67  */
  68 #define rmb()           asm volatile("mov r0, #0xffff0fff; mov lr, pc;" \
  69                                      "sub pc, r0, #95" ::: "r0", "lr", "cc", \
  70                                      "memory")
  71 #define cpu_relax()     asm volatile("":::"memory")
  72 #endif
  73
  74 #include <time.h>
  75 #include <unistd.h>
  76 #include <sys/types.h>
  77 #include <sys/syscall.h>
  78
  79 #include "../../include/linux/perf_event.h"
  80 #include "util/types.h"
  81
  82 /*
  83  * prctl(PR_TASK_PERF_EVENTS_DISABLE) will (cheaply) disable all
  84  * counters in the current task.
  85  */
  86 #define PR_TASK_PERF_EVENTS_DISABLE   31
  87 #define PR_TASK_PERF_EVENTS_ENABLE    32
  88
  89 #ifndef NSEC_PER_SEC
  90 # define NSEC_PER_SEC                   1000000000ULL
  91 #endif
  92
  93 static inline unsigned long long rdclock(void)
  94 {
  95         struct timespec ts;
  96
  97         clock_gettime(CLOCK_MONOTONIC, &ts);
  98         return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
  99 }
 100
 101 /*
 102  * Pick up some kernel type conventions:
 103  */
 104 #define __user
 105 #define asmlinkage
 106
 107 #define __used          __attribute__((__unused__))
 108
 109 #define unlikely(x)     __builtin_expect(!!(x), 0)
 110 #define min(x, y) ({                            \
 111         typeof(x) _min1 = (x);                  \
 112         typeof(y) _min2 = (y);                  \
 113         (void) (&_min1 == &_min2);              \
 114         _min1 < _min2 ? _min1 : _min2; })
 115
 116 static inline int
 117 sys_perf_event_open(struct perf_event_attr *attr,
 118                       pid_t pid, int cpu, int group_fd,
 119                       unsigned long flags)
 120 {
 121         attr->size = sizeof(*attr);
 122         return syscall(__NR_perf_event_open, attr, pid, cpu,
 123                        group_fd, flags);
 124 }
 125
 126 #define MAX_COUNTERS                    256
 127 #define MAX_NR_CPUS                     256
 128
 129 struct ip_callchain {
 130         u64 nr;
 131         u64 ips[0];
 132 };
 133
 134 #endif