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 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 #ifndef NSEC_PER_USEC
 129 # define NSEC_PER_USEC                  1000ULL
 130 #endif
 131
 132 static inline unsigned long long rdclock(void)
 133 {
 134         struct timespec ts;
 135
 136         clock_gettime(CLOCK_MONOTONIC, &ts);
 137         return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
 138 }
 139
 140 /*
 141  * Pick up some kernel type conventions:
 142  */
 143 #define __user
 144 #define asmlinkage
 145
 146 #define unlikely(x)     __builtin_expect(!!(x), 0)
 147 #define min(x, y) ({                            \
 148         typeof(x) _min1 = (x);                  \
 149         typeof(y) _min2 = (y);                  \
 150         (void) (&_min1 == &_min2);              \
 151         _min1 < _min2 ? _min1 : _min2; })
 152
 153 extern bool test_attr__enabled;
 154 void test_attr__init(void);
 155 void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu,
 156                      int fd, int group_fd, unsigned long flags);
 157
 158 static inline int
 159 sys_perf_event_open(struct perf_event_attr *attr,
 160                       pid_t pid, int cpu, int group_fd,
 161                       unsigned long flags)
 162 {
 163         int fd;
 164
 165         fd = syscall(__NR_perf_event_open, attr, pid, cpu,
 166                      group_fd, flags);
 167
 168         if (unlikely(test_attr__enabled))
 169                 test_attr__open(attr, pid, cpu, fd, group_fd, flags);
 170
 171         return fd;
 172 }
 173
 174 #define MAX_COUNTERS                    256
 175 #define MAX_NR_CPUS                     256
 176
 177 struct ip_callchain {
 178         u64 nr;
 179         u64 ips[0];
 180 };
 181
 182 struct branch_flags {
 183         u64 mispred:1;
 184         u64 predicted:1;
 185         u64 reserved:62;
 186 };
 187
 188 struct branch_entry {
 189         u64                             from;
 190         u64                             to;
 191         struct branch_flags flags;
 192 };
 193
 194 struct branch_stack {
 195         u64                             nr;
 196         struct branch_entry     entries[0];
 197 };
 198
 199 extern const char *input_name;
 200 extern bool perf_host, perf_guest;
 201 extern const char perf_version_string[];
 202
 203 void pthread__unblock_sigwinch(void);
 204
 205 #include "util/target.h"
 206
 207 enum perf_call_graph_mode {
 208         CALLCHAIN_NONE,
 209         CALLCHAIN_FP,
 210         CALLCHAIN_DWARF
 211 };
 212
 213 struct perf_record_opts {
 214         struct perf_target target;
 215         int          call_graph;
 216         bool         group;
 217         bool         inherit_stat;
 218         bool         no_delay;
 219         bool         no_inherit;
 220         bool         no_samples;
 221         bool         pipe_output;
 222         bool         raw_samples;
 223         bool         sample_address;
 224         bool         sample_weight;
 225         bool         sample_time;
 226         bool         period;
 227         unsigned int freq;
 228         unsigned int mmap_pages;
 229         unsigned int user_freq;
 230         u64          branch_stack;
 231         u64          default_interval;
 232         u64          user_interval;
 233         u16          stack_dump_size;
 234 };
 235
 236 #endif