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/uapi/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 __aarch64__
  92 #include "../../arch/arm64/include/asm/unistd.h"
  93 #define rmb()           asm volatile("dmb ld" ::: "memory")
  94 #define cpu_relax()     asm volatile("yield" ::: "memory")
  95 #endif
  96
  97 #ifdef __mips__
  98 #include "../../arch/mips/include/asm/unistd.h"
  99 #define rmb()           asm volatile(                                   \
 100                                 ".set   mips2\n\t"                      \
 101                                 "sync\n\t"                              \
 102                                 ".set   mips0"                          \
 103                                 : /* no output */                       \
 104                                 : /* no input */                        \
 105                                 : "memory")
 106 #define cpu_relax()     asm volatile("" ::: "memory")
 107 #define CPUINFO_PROC    "cpu model"
 108 #endif
 109
 110 #include <time.h>
 111 #include <unistd.h>
 112 #include <sys/types.h>
 113 #include <sys/syscall.h>
 114
 115 #include "../../include/uapi/linux/perf_event.h"
 116 #include "util/types.h"
 117 #include <stdbool.h>
 118
 119 struct perf_mmap {
 120         void                    *base;
 121         int                     mask;
 122         unsigned int            prev;
 123 };
 124
 125 static inline unsigned int perf_mmap__read_head(struct perf_mmap *mm)
 126 {
 127         struct perf_event_mmap_page *pc = mm->base;
 128         int head = pc->data_head;
 129         rmb();
 130         return head;
 131 }
 132
 133 static inline void perf_mmap__write_tail(struct perf_mmap *md,
 134                                          unsigned long tail)
 135 {
 136         struct perf_event_mmap_page *pc = md->base;
 137
 138         /*
 139          * ensure all reads are done before we write the tail out.
 140          */
 141         /* mb(); */
 142         pc->data_tail = tail;
 143 }
 144
 145 /*
 146  * prctl(PR_TASK_PERF_EVENTS_DISABLE) will (cheaply) disable all
 147  * counters in the current task.
 148  */
 149 #define PR_TASK_PERF_EVENTS_DISABLE   31
 150 #define PR_TASK_PERF_EVENTS_ENABLE    32
 151
 152 #ifndef NSEC_PER_SEC
 153 # define NSEC_PER_SEC                   1000000000ULL
 154 #endif
 155
 156 static inline unsigned long long rdclock(void)
 157 {
 158         struct timespec ts;
 159
 160         clock_gettime(CLOCK_MONOTONIC, &ts);
 161         return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
 162 }
 163
 164 /*
 165  * Pick up some kernel type conventions:
 166  */
 167 #define __user
 168 #define asmlinkage
 169
 170 #define unlikely(x)     __builtin_expect(!!(x), 0)
 171 #define min(x, y) ({                            \
 172         typeof(x) _min1 = (x);                  \
 173         typeof(y) _min2 = (y);                  \
 174         (void) (&_min1 == &_min2);              \
 175         _min1 < _min2 ? _min1 : _min2; })
 176
 177 static inline int
 178 sys_perf_event_open(struct perf_event_attr *attr,
 179                       pid_t pid, int cpu, int group_fd,
 180                       unsigned long flags)
 181 {
 182         return syscall(__NR_perf_event_open, attr, pid, cpu,
 183                        group_fd, flags);
 184 }
 185
 186 #define MAX_COUNTERS                    256
 187 #define MAX_NR_CPUS                     256
 188
 189 struct ip_callchain {
 190         u64 nr;
 191         u64 ips[0];
 192 };
 193
 194 struct branch_flags {
 195         u64 mispred:1;
 196         u64 predicted:1;
 197         u64 reserved:62;
 198 };
 199
 200 struct branch_entry {
 201         u64                             from;
 202         u64                             to;
 203         struct branch_flags flags;
 204 };
 205
 206 struct branch_stack {
 207         u64                             nr;
 208         struct branch_entry     entries[0];
 209 };
 210
 211 extern const char *input_name;
 212 extern bool perf_host, perf_guest;
 213 extern const char perf_version_string[];
 214
 215 void pthread__unblock_sigwinch(void);
 216
 217 #include "util/target.h"
 218
 219 enum perf_call_graph_mode {
 220         CALLCHAIN_NONE,
 221         CALLCHAIN_FP,
 222         CALLCHAIN_DWARF
 223 };
 224
 225 struct perf_record_opts {
 226         struct perf_target target;
 227         int          call_graph;
 228         bool         group;
 229         bool         inherit_stat;
 230         bool         no_delay;
 231         bool         no_inherit;
 232         bool         no_samples;
 233         bool         pipe_output;
 234         bool         raw_samples;
 235         bool         sample_address;
 236         bool         sample_time;
 237         bool         sample_id_all_missing;
 238         bool         exclude_guest_missing;
 239         bool         period;
 240         unsigned int freq;
 241         unsigned int mmap_pages;
 242         unsigned int user_freq;
 243         u64          branch_stack;
 244         u64          default_interval;
 245         u64          user_interval;
 246         u16          stack_dump_size;
 247 };
 248
 249 #endif