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 #include <asm/unistd.h>
   9
  10 #if defined(__i386__)
  11 #define rmb()           asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
  12 #define cpu_relax()     asm volatile("rep; nop" ::: "memory");
  13 #define CPUINFO_PROC    "model name"
  14 #ifndef __NR_perf_event_open
  15 # define __NR_perf_event_open 336
  16 #endif
  17 #endif
  18
  19 #if defined(__x86_64__)
  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 #define rmb()           asm volatile ("sync" ::: "memory")
  30 #define cpu_relax()     asm volatile ("" ::: "memory");
  31 #define CPUINFO_PROC    "cpu"
  32 #endif
  33
  34 #ifdef __s390__
  35 #define rmb()           asm volatile("bcr 15,0" ::: "memory")
  36 #define cpu_relax()     asm volatile("" ::: "memory");
  37 #endif
  38
  39 #ifdef __sh__
  40 #if defined(__SH4A__) || defined(__SH5__)
  41 # define rmb()          asm volatile("synco" ::: "memory")
  42 #else
  43 # define rmb()          asm volatile("" ::: "memory")
  44 #endif
  45 #define cpu_relax()     asm volatile("" ::: "memory")
  46 #define CPUINFO_PROC    "cpu type"
  47 #endif
  48
  49 #ifdef __hppa__
  50 #define rmb()           asm volatile("" ::: "memory")
  51 #define cpu_relax()     asm volatile("" ::: "memory");
  52 #define CPUINFO_PROC    "cpu"
  53 #endif
  54
  55 #ifdef __sparc__
  56 #define rmb()           asm volatile("":::"memory")
  57 #define cpu_relax()     asm volatile("":::"memory")
  58 #define CPUINFO_PROC    "cpu"
  59 #endif
  60
  61 #ifdef __alpha__
  62 #define rmb()           asm volatile("mb" ::: "memory")
  63 #define cpu_relax()     asm volatile("" ::: "memory")
  64 #define CPUINFO_PROC    "cpu model"
  65 #endif
  66
  67 #ifdef __ia64__
  68 #define rmb()           asm volatile ("mf" ::: "memory")
  69 #define cpu_relax()     asm volatile ("hint @pause" ::: "memory")
  70 #define CPUINFO_PROC    "model name"
  71 #endif
  72
  73 #ifdef __arm__
  74 /*
  75  * Use the __kuser_memory_barrier helper in the CPU helper page. See
  76  * arch/arm/kernel/entry-armv.S in the kernel source for details.
  77  */
  78 #define rmb()           ((void(*)(void))0xffff0fa0)()
  79 #define cpu_relax()     asm volatile("":::"memory")
  80 #define CPUINFO_PROC    "Processor"
  81 #endif
  82
  83 #ifdef __aarch64__
  84 #define rmb()           asm volatile("dmb ld" ::: "memory")
  85 #define cpu_relax()     asm volatile("yield" ::: "memory")
  86 #endif
  87
  88 #ifdef __mips__
  89 #define rmb()           asm volatile(                                   \
  90                                 ".set   mips2\n\t"                      \
  91                                 "sync\n\t"                              \
  92                                 ".set   mips0"                          \
  93                                 : /* no output */                       \
  94                                 : /* no input */                        \
  95                                 : "memory")
  96 #define cpu_relax()     asm volatile("" ::: "memory")
  97 #define CPUINFO_PROC    "cpu model"
  98 #endif
  99
 100 #include <time.h>
 101 #include <unistd.h>
 102 #include <sys/types.h>
 103 #include <sys/syscall.h>
 104
 105 #include <linux/perf_event.h>
 106 #include "util/types.h"
 107 #include <stdbool.h>
 108
 109 struct perf_mmap {
 110         void                    *base;
 111         int                     mask;
 112         unsigned int            prev;
 113 };
 114
 115 static inline unsigned int perf_mmap__read_head(struct perf_mmap *mm)
 116 {
 117         struct perf_event_mmap_page *pc = mm->base;
 118         int head = pc->data_head;
 119         rmb();
 120         return head;
 121 }
 122
 123 static inline void perf_mmap__write_tail(struct perf_mmap *md,
 124                                          unsigned long tail)
 125 {
 126         struct perf_event_mmap_page *pc = md->base;
 127
 128         /*
 129          * ensure all reads are done before we write the tail out.
 130          */
 131         /* mb(); */
 132         pc->data_tail = tail;
 133 }
 134
 135 /*
 136  * prctl(PR_TASK_PERF_EVENTS_DISABLE) will (cheaply) disable all
 137  * counters in the current task.
 138  */
 139 #define PR_TASK_PERF_EVENTS_DISABLE   31
 140 #define PR_TASK_PERF_EVENTS_ENABLE    32
 141
 142 #ifndef NSEC_PER_SEC
 143 # define NSEC_PER_SEC                   1000000000ULL
 144 #endif
 145
 146 static inline unsigned long long rdclock(void)
 147 {
 148         struct timespec ts;
 149
 150         clock_gettime(CLOCK_MONOTONIC, &ts);
 151         return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
 152 }
 153
 154 /*
 155  * Pick up some kernel type conventions:
 156  */
 157 #define __user
 158 #define asmlinkage
 159
 160 #define unlikely(x)     __builtin_expect(!!(x), 0)
 161 #define min(x, y) ({                            \
 162         typeof(x) _min1 = (x);                  \
 163         typeof(y) _min2 = (y);                  \
 164         (void) (&_min1 == &_min2);              \
 165         _min1 < _min2 ? _min1 : _min2; })
 166
 167 static inline int
 168 sys_perf_event_open(struct perf_event_attr *attr,
 169                       pid_t pid, int cpu, int group_fd,
 170                       unsigned long flags)
 171 {
 172         return syscall(__NR_perf_event_open, attr, pid, cpu,
 173                        group_fd, flags);
 174 }
 175
 176 #define MAX_COUNTERS                    256
 177 #define MAX_NR_CPUS                     256
 178
 179 struct ip_callchain {
 180         u64 nr;
 181         u64 ips[0];
 182 };
 183
 184 struct branch_flags {
 185         u64 mispred:1;
 186         u64 predicted:1;
 187         u64 reserved:62;
 188 };
 189
 190 struct branch_entry {
 191         u64                             from;
 192         u64                             to;
 193         struct branch_flags flags;
 194 };
 195
 196 struct branch_stack {
 197         u64                             nr;
 198         struct branch_entry     entries[0];
 199 };
 200
 201 extern bool perf_host, perf_guest;
 202 extern const char perf_version_string[];
 203
 204 void pthread__unblock_sigwinch(void);
 205
 206 #include "util/target.h"
 207
 208 enum perf_call_graph_mode {
 209         CALLCHAIN_NONE,
 210         CALLCHAIN_FP,
 211         CALLCHAIN_DWARF
 212 };
 213
 214 struct perf_record_opts {
 215         struct perf_target target;
 216         int          call_graph;
 217         bool         group;
 218         bool         inherit_stat;
 219         bool         no_delay;
 220         bool         no_inherit;
 221         bool         no_samples;
 222         bool         pipe_output;
 223         bool         raw_samples;
 224         bool         sample_address;
 225         bool         sample_time;
 226         bool         sample_id_all_missing;
 227         bool         exclude_guest_missing;
 228         bool         period;
 229         unsigned int freq;
 230         unsigned int mmap_pages;
 231         unsigned int user_freq;
 232         u64          branch_stack;
 233         u64          default_interval;
 234         u64          user_interval;
 235         u16          stack_dump_size;
 236 };
 237
 238 #endif