tools/perf/perf.h

   1 #ifndef _PERF_PERF_H
   2 #define _PERF_PERF_H
   3
   4 struct winsize;
   5
   6 void get_term_dimensions(struct winsize *ws);
   7
   8 #if defined(__i386__)
   9 #include "../../arch/x86/include/asm/unistd.h"
  10 #define rmb()           asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
  11 #define cpu_relax()     asm volatile("rep; nop" ::: "memory");
  12 #endif
  13
  14 #if defined(__x86_64__)
  15 #include "../../arch/x86/include/asm/unistd.h"
  16 #define rmb()           asm volatile("lfence" ::: "memory")
  17 #define cpu_relax()     asm volatile("rep; nop" ::: "memory");
  18 #endif
  19
  20 #ifdef __powerpc__
  21 #include "../../arch/powerpc/include/asm/unistd.h"
  22 #define rmb()           asm volatile ("sync" ::: "memory")
  23 #define cpu_relax()     asm volatile ("" ::: "memory");
  24 #endif
  25
  26 #ifdef __s390__
  27 #include "../../arch/s390/include/asm/unistd.h"
  28 #define rmb()           asm volatile("bcr 15,0" ::: "memory")
  29 #define cpu_relax()     asm volatile("" ::: "memory");
  30 #endif
  31
  32 #ifdef __sh__
  33 #include "../../arch/sh/include/asm/unistd.h"
  34 #if defined(__SH4A__) || defined(__SH5__)
  35 # define rmb()          asm volatile("synco" ::: "memory")
  36 #else
  37 # define rmb()          asm volatile("" ::: "memory")
  38 #endif
  39 #define cpu_relax()     asm volatile("" ::: "memory")
  40 #endif
  41
  42 #ifdef __hppa__
  43 #include "../../arch/parisc/include/asm/unistd.h"
  44 #define rmb()           asm volatile("" ::: "memory")
  45 #define cpu_relax()     asm volatile("" ::: "memory");
  46 #endif
  47
  48 #ifdef __sparc__
  49 #include "../../arch/sparc/include/asm/unistd.h"
  50 #define rmb()           asm volatile("":::"memory")
  51 #define cpu_relax()     asm volatile("":::"memory")
  52 #endif
  53
  54 #ifdef __alpha__
  55 #include "../../arch/alpha/include/asm/unistd.h"
  56 #define rmb()           asm volatile("mb" ::: "memory")
  57 #define cpu_relax()     asm volatile("" ::: "memory")
  58 #endif
  59
  60 #ifdef __ia64__
  61 #include "../../arch/ia64/include/asm/unistd.h"
  62 #define rmb()           asm volatile ("mf" ::: "memory")
  63 #define cpu_relax()     asm volatile ("hint @pause" ::: "memory")
  64 #endif
  65
  66 #ifdef __arm__
  67 #include "../../arch/arm/include/asm/unistd.h"
  68 /*
  69  * Use the __kuser_memory_barrier helper in the CPU helper page. See
  70  * arch/arm/kernel/entry-armv.S in the kernel source for details.
  71  */
  72 #define rmb()           ((void(*)(void))0xffff0fa0)()
  73 #define cpu_relax()     asm volatile("":::"memory")
  74 #endif
  75
  76 #include <time.h>
  77 #include <unistd.h>
  78 #include <sys/types.h>
  79 #include <sys/syscall.h>
  80
  81 #include "../../include/linux/perf_event.h"
  82 #include "util/types.h"
  83 #include <stdbool.h>
  84
  85 /*
  86  * prctl(PR_TASK_PERF_EVENTS_DISABLE) will (cheaply) disable all
  87  * counters in the current task.
  88  */
  89 #define PR_TASK_PERF_EVENTS_DISABLE   31
  90 #define PR_TASK_PERF_EVENTS_ENABLE    32
  91
  92 #ifndef NSEC_PER_SEC
  93 # define NSEC_PER_SEC                   1000000000ULL
  94 #endif
  95
  96 static inline unsigned long long rdclock(void)
  97 {
  98         struct timespec ts;
  99
 100         clock_gettime(CLOCK_MONOTONIC, &ts);
 101         return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
 102 }
 103
 104 /*
 105  * Pick up some kernel type conventions:
 106  */
 107 #define __user
 108 #define asmlinkage
 109
 110 #define unlikely(x)     __builtin_expect(!!(x), 0)
 111 #define min(x, y) ({                            \
 112         typeof(x) _min1 = (x);                  \
 113         typeof(y) _min2 = (y);                  \
 114         (void) (&_min1 == &_min2);              \
 115         _min1 < _min2 ? _min1 : _min2; })
 116
 117 static inline int
 118 sys_perf_event_open(struct perf_event_attr *attr,
 119                       pid_t pid, int cpu, int group_fd,
 120                       unsigned long flags)
 121 {
 122         attr->size = sizeof(*attr);
 123         return syscall(__NR_perf_event_open, attr, pid, cpu,
 124                        group_fd, flags);
 125 }
 126
 127 #define MAX_COUNTERS                    256
 128 #define MAX_NR_CPUS                     256
 129
 130 struct ip_callchain {
 131         u64 nr;
 132         u64 ips[0];
 133 };
 134
 135 extern bool perf_host, perf_guest;
 136
 137 #endif