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 #define CPUINFO_PROC    "model name"
  13 #ifndef __NR_perf_event_open
  14 # define __NR_perf_event_open 336
  15 #endif
  16 #endif
  17
  18 #if defined(__x86_64__)
  19 #include "../../arch/x86/include/asm/unistd.h"
  20 #define rmb()           asm volatile("lfence" ::: "memory")
  21 #define cpu_relax()     asm volatile("rep; nop" ::: "memory");
  22 #define CPUINFO_PROC    "model name"
  23 #ifndef __NR_perf_event_open
  24 # define __NR_perf_event_open 298
  25 #endif
  26 #endif
  27
  28 #ifdef __powerpc__
  29 #include "../../arch/powerpc/include/asm/unistd.h"
  30 #define rmb()           asm volatile ("sync" ::: "memory")
  31 #define cpu_relax()     asm volatile ("" ::: "memory");
  32 #define CPUINFO_PROC    "cpu"
  33 #endif
  34
  35 #ifdef __s390__
  36 #include "../../arch/s390/include/asm/unistd.h"
  37 #define rmb()           asm volatile("bcr 15,0" ::: "memory")
  38 #define cpu_relax()     asm volatile("" ::: "memory");
  39 #endif
  40
  41 #ifdef __sh__
  42 #include "../../arch/sh/include/asm/unistd.h"
  43 #if defined(__SH4A__) || defined(__SH5__)
  44 # define rmb()          asm volatile("synco" ::: "memory")
  45 #else
  46 # define rmb()          asm volatile("" ::: "memory")
  47 #endif
  48 #define cpu_relax()     asm volatile("" ::: "memory")
  49 #define CPUINFO_PROC    "cpu type"
  50 #endif
  51
  52 #ifdef __hppa__
  53 #include "../../arch/parisc/include/asm/unistd.h"
  54 #define rmb()           asm volatile("" ::: "memory")
  55 #define cpu_relax()     asm volatile("" ::: "memory");
  56 #define CPUINFO_PROC    "cpu"
  57 #endif
  58
  59 #ifdef __sparc__
  60 #include "../../arch/sparc/include/asm/unistd.h"
  61 #define rmb()           asm volatile("":::"memory")
  62 #define cpu_relax()     asm volatile("":::"memory")
  63 #define CPUINFO_PROC    "cpu"
  64 #endif
  65
  66 #ifdef __alpha__
  67 #include "../../arch/alpha/include/asm/unistd.h"
  68 #define rmb()           asm volatile("mb" ::: "memory")
  69 #define cpu_relax()     asm volatile("" ::: "memory")
  70 #define CPUINFO_PROC    "cpu model"
  71 #endif
  72
  73 #ifdef __ia64__
  74 #include "../../arch/ia64/include/asm/unistd.h"
  75 #define rmb()           asm volatile ("mf" ::: "memory")
  76 #define cpu_relax()     asm volatile ("hint @pause" ::: "memory")
  77 #define CPUINFO_PROC    "model name"
  78 #endif
  79
  80 #ifdef __arm__
  81 #include "../../arch/arm/include/asm/unistd.h"
  82 /*
  83  * Use the __kuser_memory_barrier helper in the CPU helper page. See
  84  * arch/arm/kernel/entry-armv.S in the kernel source for details.
  85  */
  86 #define rmb()           ((void(*)(void))0xffff0fa0)()
  87 #define cpu_relax()     asm volatile("":::"memory")
  88 #define CPUINFO_PROC    "Processor"
  89 #endif
  90
  91 #ifdef __mips__
  92 #include "../../arch/mips/include/asm/unistd.h"
  93 #define rmb()           asm volatile(                                   \
  94                                 ".set   mips2\n\t"                      \
  95                                 "sync\n\t"                              \
  96                                 ".set   mips0"                          \
  97                                 : /* no output */                       \
  98                                 : /* no input */                        \
  99                                 : "memory")
 100 #define cpu_relax()     asm volatile("" ::: "memory")
 101 #define CPUINFO_PROC    "cpu model"
 102 #endif
 103
 104 #include <time.h>
 105 #include <unistd.h>
 106 #include <sys/types.h>
 107 #include <sys/syscall.h>
 108
 109 #include "../../include/linux/perf_event.h"
 110 #include "util/types.h"
 111 #include <stdbool.h>
 112
 113 struct perf_mmap {
 114         void                    *base;
 115         int                     mask;
 116         unsigned int            prev;
 117 };
 118
 119 static inline unsigned int perf_mmap__read_head(struct perf_mmap *mm)
 120 {
 121         struct perf_event_mmap_page *pc = mm->base;
 122         int head = pc->data_head;
 123         rmb();
 124         return head;
 125 }
 126
 127 static inline void perf_mmap__write_tail(struct perf_mmap *md,
 128                                          unsigned long tail)
 129 {
 130         struct perf_event_mmap_page *pc = md->base;
 131
 132         /*
 133          * ensure all reads are done before we write the tail out.
 134          */
 135         /* mb(); */
 136         pc->data_tail = tail;
 137 }
 138
 139 /*
 140  * prctl(PR_TASK_PERF_EVENTS_DISABLE) will (cheaply) disable all
 141  * counters in the current task.
 142  */
 143 #define PR_TASK_PERF_EVENTS_DISABLE   31
 144 #define PR_TASK_PERF_EVENTS_ENABLE    32
 145
 146 #ifndef NSEC_PER_SEC
 147 # define NSEC_PER_SEC                   1000000000ULL
 148 #endif
 149
 150 static inline unsigned long long rdclock(void)
 151 {
 152         struct timespec ts;
 153
 154         clock_gettime(CLOCK_MONOTONIC, &ts);
 155         return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
 156 }
 157
 158 /*
 159  * Pick up some kernel type conventions:
 160  */
 161 #define __user
 162 #define asmlinkage
 163
 164 #define unlikely(x)     __builtin_expect(!!(x), 0)
 165 #define min(x, y) ({                            \
 166         typeof(x) _min1 = (x);                  \
 167         typeof(y) _min2 = (y);                  \
 168         (void) (&_min1 == &_min2);              \
 169         _min1 < _min2 ? _min1 : _min2; })
 170
 171 static inline int
 172 sys_perf_event_open(struct perf_event_attr *attr,
 173                       pid_t pid, int cpu, int group_fd,
 174                       unsigned long flags)
 175 {
 176         return syscall(__NR_perf_event_open, attr, pid, cpu,
 177                        group_fd, flags);
 178 }
 179
 180 #define MAX_COUNTERS                    256
 181 #define MAX_NR_CPUS                     256
 182
 183 struct ip_callchain {
 184         u64 nr;
 185         u64 ips[0];
 186 };
 187
 188 struct branch_flags {
 189         u64 mispred:1;
 190         u64 predicted:1;
 191         u64 reserved:62;
 192 };
 193
 194 struct branch_entry {
 195         u64                             from;
 196         u64                             to;
 197         struct branch_flags flags;
 198 };
 199
 200 struct branch_stack {
 201         u64                             nr;
 202         struct branch_entry     entries[0];
 203 };
 204
 205 extern bool perf_host, perf_guest;
 206 extern const char perf_version_string[];
 207
 208 void pthread__unblock_sigwinch(void);
 209
 210 struct perf_record_opts {
 211         const char   *target_pid;
 212         const char   *target_tid;
 213         uid_t        uid;
 214         bool         call_graph;
 215         bool         group;
 216         bool         inherit_stat;
 217         bool         no_delay;
 218         bool         no_inherit;
 219         bool         no_samples;
 220         bool         pipe_output;
 221         bool         raw_samples;
 222         bool         sample_address;
 223         bool         sample_time;
 224         bool         sample_id_all_missing;
 225         bool         exclude_guest_missing;
 226         bool         system_wide;
 227         bool         period;
 228         unsigned int freq;
 229         unsigned int mmap_pages;
 230         unsigned int user_freq;
 231         int          branch_stack;
 232         u64          default_interval;
 233         u64          user_interval;
 234         const char   *cpu_list;
 235 };
 236
 237 #endif