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