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 #include "../../arch/powerpc/include/uapi/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 #define rmb()           asm volatile("bcr 15,0" ::: "memory")
  37 #define cpu_relax()     asm volatile("" ::: "memory");
  38 #endif
  39
  40 #ifdef __sh__
  41 #if defined(__SH4A__) || defined(__SH5__)
  42 # define rmb()          asm volatile("synco" ::: "memory")
  43 #else
  44 # define rmb()          asm volatile("" ::: "memory")
  45 #endif
  46 #define cpu_relax()     asm volatile("" ::: "memory")
  47 #define CPUINFO_PROC    "cpu type"
  48 #endif
  49
  50 #ifdef __hppa__
  51 #define rmb()           asm volatile("" ::: "memory")
  52 #define cpu_relax()     asm volatile("" ::: "memory");
  53 #define CPUINFO_PROC    "cpu"
  54 #endif
  55
  56 #ifdef __sparc__
  57 #define rmb()           asm volatile("":::"memory")
  58 #define cpu_relax()     asm volatile("":::"memory")
  59 #define CPUINFO_PROC    "cpu"
  60 #endif
  61
  62 #ifdef __alpha__
  63 #define rmb()           asm volatile("mb" ::: "memory")
  64 #define cpu_relax()     asm volatile("" ::: "memory")
  65 #define CPUINFO_PROC    "cpu model"
  66 #endif
  67
  68 #ifdef __ia64__
  69 #define rmb()           asm volatile ("mf" ::: "memory")
  70 #define cpu_relax()     asm volatile ("hint @pause" ::: "memory")
  71 #define CPUINFO_PROC    "model name"
  72 #endif
  73
  74 #ifdef __arm__
  75 /*
  76  * Use the __kuser_memory_barrier helper in the CPU helper page. See
  77  * arch/arm/kernel/entry-armv.S in the kernel source for details.
  78  */
  79 #define rmb()           ((void(*)(void))0xffff0fa0)()
  80 #define cpu_relax()     asm volatile("":::"memory")
  81 #define CPUINFO_PROC    "Processor"
  82 #endif
  83
  84 #ifdef __aarch64__
  85 #define rmb()           asm volatile("dmb ld" ::: "memory")
  86 #define cpu_relax()     asm volatile("yield" ::: "memory")
  87 #endif
  88
  89 #ifdef __mips__
  90 #define rmb()           asm volatile(                                   \
  91                                 ".set   mips2\n\t"                      \
  92                                 "sync\n\t"                              \
  93                                 ".set   mips0"                          \
  94                                 : /* no output */                       \
  95                                 : /* no input */                        \
  96                                 : "memory")
  97 #define cpu_relax()     asm volatile("" ::: "memory")
  98 #define CPUINFO_PROC    "cpu model"
  99 #endif
 100
 101 #include <time.h>
 102 #include <unistd.h>
 103 #include <sys/types.h>
 104 #include <sys/syscall.h>
 105
 106 #include <linux/perf_event.h>
 107 #include "util/types.h"
 108 #include <stdbool.h>
 109
 110 struct perf_mmap {
 111         void                    *base;
 112         int                     mask;
 113         unsigned int            prev;
 114 };
 115
 116 static inline unsigned int perf_mmap__read_head(struct perf_mmap *mm)
 117 {
 118         struct perf_event_mmap_page *pc = mm->base;
 119         int head = pc->data_head;
 120         rmb();
 121         return head;
 122 }
 123
 124 static inline void perf_mmap__write_tail(struct perf_mmap *md,
 125                                          unsigned long tail)
 126 {
 127         struct perf_event_mmap_page *pc = md->base;
 128
 129         /*
 130          * ensure all reads are done before we write the tail out.
 131          */
 132         /* mb(); */
 133         pc->data_tail = tail;
 134 }
 135
 136 /*
 137  * prctl(PR_TASK_PERF_EVENTS_DISABLE) will (cheaply) disable all
 138  * counters in the current task.
 139  */
 140 #define PR_TASK_PERF_EVENTS_DISABLE   31
 141 #define PR_TASK_PERF_EVENTS_ENABLE    32
 142
 143 #ifndef NSEC_PER_SEC
 144 # define NSEC_PER_SEC                   1000000000ULL
 145 #endif
 146
 147 static inline unsigned long long rdclock(void)
 148 {
 149         struct timespec ts;
 150
 151         clock_gettime(CLOCK_MONOTONIC, &ts);
 152         return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
 153 }
 154
 155 /*
 156  * Pick up some kernel type conventions:
 157  */
 158 #define __user
 159 #define asmlinkage
 160
 161 #define unlikely(x)     __builtin_expect(!!(x), 0)
 162 #define min(x, y) ({                            \
 163         typeof(x) _min1 = (x);                  \
 164         typeof(y) _min2 = (y);                  \
 165         (void) (&_min1 == &_min2);              \
 166         _min1 < _min2 ? _min1 : _min2; })
 167
 168 extern bool test_attr__enabled;
 169 void test_attr__init(void);
 170 void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu,
 171                      int fd, int group_fd, unsigned long flags);
 172
 173 static inline int
 174 sys_perf_event_open(struct perf_event_attr *attr,
 175                       pid_t pid, int cpu, int group_fd,
 176                       unsigned long flags)
 177 {
 178         int fd;
 179
 180         fd = syscall(__NR_perf_event_open, attr, pid, cpu,
 181                      group_fd, flags);
 182
 183         if (unlikely(test_attr__enabled))
 184                 test_attr__open(attr, pid, cpu, fd, group_fd, flags);
 185
 186         return fd;
 187 }
 188
 189 #define MAX_COUNTERS                    256
 190 #define MAX_NR_CPUS                     256
 191
 192 struct ip_callchain {
 193         u64 nr;
 194         u64 ips[0];
 195 };
 196
 197 struct branch_flags {
 198         u64 mispred:1;
 199         u64 predicted:1;
 200         u64 reserved:62;
 201 };
 202
 203 struct branch_entry {
 204         u64                             from;
 205         u64                             to;
 206         struct branch_flags flags;
 207 };
 208
 209 struct branch_stack {
 210         u64                             nr;
 211         struct branch_entry     entries[0];
 212 };
 213
 214 extern const char *input_name;
 215 extern bool perf_host, perf_guest;
 216 extern const char perf_version_string[];
 217
 218 void pthread__unblock_sigwinch(void);
 219
 220 #include "util/target.h"
 221
 222 enum perf_call_graph_mode {
 223         CALLCHAIN_NONE,
 224         CALLCHAIN_FP,
 225         CALLCHAIN_DWARF
 226 };
 227
 228 struct perf_record_opts {
 229         struct perf_target target;
 230         int          call_graph;
 231         bool         group;
 232         bool         inherit_stat;
 233         bool         no_delay;
 234         bool         no_inherit;
 235         bool         no_samples;
 236         bool         pipe_output;
 237         bool         raw_samples;
 238         bool         sample_address;
 239         bool         sample_time;
 240         bool         sample_id_all_missing;
 241         bool         exclude_guest_missing;
 242         bool         period;
 243         unsigned int freq;
 244         unsigned int mmap_pages;
 245         unsigned int user_freq;
 246         u64          branch_stack;
 247         u64          default_interval;
 248         u64          user_interval;
 249         u16          stack_dump_size;
 250 };
 251
 252 #endif