tools/perf/util/event.h

   1 #ifndef __PERF_RECORD_H
   2 #define __PERF_RECORD_H
   3
   4 #include <limits.h>
   5 #include <stdio.h>
   6
   7 #include "../perf.h"
   8 #include "map.h"
   9 #include "build-id.h"
  10 #include "perf_regs.h"
  11
  12 struct mmap_event {
  13         struct perf_event_header header;
  14         u32 pid, tid;
  15         u64 start;
  16         u64 len;
  17         u64 pgoff;
  18         char filename[PATH_MAX];
  19 };
  20
  21 struct mmap2_event {
  22         struct perf_event_header header;
  23         u32 pid, tid;
  24         u64 start;
  25         u64 len;
  26         u64 pgoff;
  27         u32 maj;
  28         u32 min;
  29         u64 ino;
  30         u64 ino_generation;
  31         u32 prot;
  32         u32 flags;
  33         char filename[PATH_MAX];
  34 };
  35
  36 struct comm_event {
  37         struct perf_event_header header;
  38         u32 pid, tid;
  39         char comm[16];
  40 };
  41
  42 struct fork_event {
  43         struct perf_event_header header;
  44         u32 pid, ppid;
  45         u32 tid, ptid;
  46         u64 time;
  47 };
  48
  49 struct lost_event {
  50         struct perf_event_header header;
  51         u64 id;
  52         u64 lost;
  53 };
  54
  55 struct lost_samples_event {
  56         struct perf_event_header header;
  57         u64 lost;
  58 };
  59
  60 /*
  61  * PERF_FORMAT_ENABLED | PERF_FORMAT_RUNNING | PERF_FORMAT_ID
  62  */
  63 struct read_event {
  64         struct perf_event_header header;
  65         u32 pid, tid;
  66         u64 value;
  67         u64 time_enabled;
  68         u64 time_running;
  69         u64 id;
  70 };
  71
  72 struct throttle_event {
  73         struct perf_event_header header;
  74         u64 time;
  75         u64 id;
  76         u64 stream_id;
  77 };
  78
  79 #define PERF_SAMPLE_MASK                                \
  80         (PERF_SAMPLE_IP | PERF_SAMPLE_TID |             \
  81          PERF_SAMPLE_TIME | PERF_SAMPLE_ADDR |          \
  82         PERF_SAMPLE_ID | PERF_SAMPLE_STREAM_ID |        \
  83          PERF_SAMPLE_CPU | PERF_SAMPLE_PERIOD |         \
  84          PERF_SAMPLE_IDENTIFIER)
  85
  86 /* perf sample has 16 bits size limit */
  87 #define PERF_SAMPLE_MAX_SIZE (1 << 16)
  88
  89 struct sample_event {
  90         struct perf_event_header        header;
  91         u64 array[];
  92 };
  93
  94 struct regs_dump {
  95         u64 abi;
  96         u64 mask;
  97         u64 *regs;
  98
  99         /* Cached values/mask filled by first register access. */
 100         u64 cache_regs[PERF_REGS_MAX];
 101         u64 cache_mask;
 102 };
 103
 104 struct stack_dump {
 105         u16 offset;
 106         u64 size;
 107         char *data;
 108 };
 109
 110 struct sample_read_value {
 111         u64 value;
 112         u64 id;
 113 };
 114
 115 struct sample_read {
 116         u64 time_enabled;
 117         u64 time_running;
 118         union {
 119                 struct {
 120                         u64 nr;
 121                         struct sample_read_value *values;
 122                 } group;
 123                 struct sample_read_value one;
 124         };
 125 };
 126
 127 struct ip_callchain {
 128         u64 nr;
 129         u64 ips[0];
 130 };
 131
 132 struct branch_flags {
 133         u64 mispred:1;
 134         u64 predicted:1;
 135         u64 in_tx:1;
 136         u64 abort:1;
 137         u64 reserved:60;
 138 };
 139
 140 struct branch_entry {
 141         u64                     from;
 142         u64                     to;
 143         struct branch_flags     flags;
 144 };
 145
 146 struct branch_stack {
 147         u64                     nr;
 148         struct branch_entry     entries[0];
 149 };
 150
 151 enum {
 152         PERF_IP_FLAG_BRANCH             = 1ULL << 0,
 153         PERF_IP_FLAG_CALL               = 1ULL << 1,
 154         PERF_IP_FLAG_RETURN             = 1ULL << 2,
 155         PERF_IP_FLAG_CONDITIONAL        = 1ULL << 3,
 156         PERF_IP_FLAG_SYSCALLRET         = 1ULL << 4,
 157         PERF_IP_FLAG_ASYNC              = 1ULL << 5,
 158         PERF_IP_FLAG_INTERRUPT          = 1ULL << 6,
 159         PERF_IP_FLAG_TX_ABORT           = 1ULL << 7,
 160         PERF_IP_FLAG_TRACE_BEGIN        = 1ULL << 8,
 161         PERF_IP_FLAG_TRACE_END          = 1ULL << 9,
 162         PERF_IP_FLAG_IN_TX              = 1ULL << 10,
 163 };
 164
 165 #define PERF_IP_FLAG_CHARS "bcrosyiABEx"
 166
 167 #define PERF_BRANCH_MASK                (\
 168         PERF_IP_FLAG_BRANCH             |\
 169         PERF_IP_FLAG_CALL               |\
 170         PERF_IP_FLAG_RETURN             |\
 171         PERF_IP_FLAG_CONDITIONAL        |\
 172         PERF_IP_FLAG_SYSCALLRET         |\
 173         PERF_IP_FLAG_ASYNC              |\
 174         PERF_IP_FLAG_INTERRUPT          |\
 175         PERF_IP_FLAG_TX_ABORT           |\
 176         PERF_IP_FLAG_TRACE_BEGIN        |\
 177         PERF_IP_FLAG_TRACE_END)
 178
 179 struct perf_sample {
 180         u64 ip;
 181         u32 pid, tid;
 182         u64 time;
 183         u64 addr;
 184         u64 id;
 185         u64 stream_id;
 186         u64 period;
 187         u64 weight;
 188         u64 transaction;
 189         u32 cpu;
 190         u32 raw_size;
 191         u64 data_src;
 192         u32 flags;
 193         u16 insn_len;
 194         void *raw_data;
 195         struct ip_callchain *callchain;
 196         struct branch_stack *branch_stack;
 197         struct regs_dump  user_regs;
 198         struct regs_dump  intr_regs;
 199         struct stack_dump user_stack;
 200         struct sample_read read;
 201 };
 202
 203 #define PERF_MEM_DATA_SRC_NONE \
 204         (PERF_MEM_S(OP, NA) |\
 205          PERF_MEM_S(LVL, NA) |\
 206          PERF_MEM_S(SNOOP, NA) |\
 207          PERF_MEM_S(LOCK, NA) |\
 208          PERF_MEM_S(TLB, NA))
 209
 210 struct build_id_event {
 211         struct perf_event_header header;
 212         pid_t                    pid;
 213         u8                       build_id[PERF_ALIGN(BUILD_ID_SIZE, sizeof(u64))];
 214         char                     filename[];
 215 };
 216
 217 enum perf_user_event_type { /* above any possible kernel type */
 218         PERF_RECORD_USER_TYPE_START             = 64,
 219         PERF_RECORD_HEADER_ATTR                 = 64,
 220         PERF_RECORD_HEADER_EVENT_TYPE           = 65, /* depreceated */
 221         PERF_RECORD_HEADER_TRACING_DATA         = 66,
 222         PERF_RECORD_HEADER_BUILD_ID             = 67,
 223         PERF_RECORD_FINISHED_ROUND              = 68,
 224         PERF_RECORD_ID_INDEX                    = 69,
 225         PERF_RECORD_AUXTRACE_INFO               = 70,
 226         PERF_RECORD_AUXTRACE                    = 71,
 227         PERF_RECORD_AUXTRACE_ERROR              = 72,
 228         PERF_RECORD_HEADER_MAX
 229 };
 230
 231 enum auxtrace_error_type {
 232         PERF_AUXTRACE_ERROR_ITRACE  = 1,
 233         PERF_AUXTRACE_ERROR_MAX
 234 };
 235
 236 /*
 237  * The kernel collects the number of events it couldn't send in a stretch and
 238  * when possible sends this number in a PERF_RECORD_LOST event. The number of
 239  * such "chunks" of lost events is stored in .nr_events[PERF_EVENT_LOST] while
 240  * total_lost tells exactly how many events the kernel in fact lost, i.e. it is
 241  * the sum of all struct lost_event.lost fields reported.
 242  *
 243  * The kernel discards mixed up samples and sends the number in a
 244  * PERF_RECORD_LOST_SAMPLES event. The number of lost-samples events is stored
 245  * in .nr_events[PERF_RECORD_LOST_SAMPLES] while total_lost_samples tells
 246  * exactly how many samples the kernel in fact dropped, i.e. it is the sum of
 247  * all struct lost_samples_event.lost fields reported.
 248  *
 249  * The total_period is needed because by default auto-freq is used, so
 250  * multipling nr_events[PERF_EVENT_SAMPLE] by a frequency isn't possible to get
 251  * the total number of low level events, it is necessary to to sum all struct
 252  * sample_event.period and stash the result in total_period.
 253  */
 254 struct events_stats {
 255         u64 total_period;
 256         u64 total_non_filtered_period;
 257         u64 total_lost;
 258         u64 total_lost_samples;
 259         u64 total_invalid_chains;
 260         u32 nr_events[PERF_RECORD_HEADER_MAX];
 261         u32 nr_non_filtered_samples;
 262         u32 nr_lost_warned;
 263         u32 nr_unknown_events;
 264         u32 nr_invalid_chains;
 265         u32 nr_unknown_id;
 266         u32 nr_unprocessable_samples;
 267         u32 nr_auxtrace_errors[PERF_AUXTRACE_ERROR_MAX];
 268         u32 nr_proc_map_timeout;
 269 };
 270
 271 struct attr_event {
 272         struct perf_event_header header;
 273         struct perf_event_attr attr;
 274         u64 id[];
 275 };
 276
 277 #define MAX_EVENT_NAME 64
 278
 279 struct perf_trace_event_type {
 280         u64     event_id;
 281         char    name[MAX_EVENT_NAME];
 282 };
 283
 284 struct event_type_event {
 285         struct perf_event_header header;
 286         struct perf_trace_event_type event_type;
 287 };
 288
 289 struct tracing_data_event {
 290         struct perf_event_header header;
 291         u32 size;
 292 };
 293
 294 struct id_index_entry {
 295         u64 id;
 296         u64 idx;
 297         u64 cpu;
 298         u64 tid;
 299 };
 300
 301 struct id_index_event {
 302         struct perf_event_header header;
 303         u64 nr;
 304         struct id_index_entry entries[0];
 305 };
 306
 307 struct auxtrace_info_event {
 308         struct perf_event_header header;
 309         u32 type;
 310         u32 reserved__; /* For alignment */
 311         u64 priv[];
 312 };
 313
 314 struct auxtrace_event {
 315         struct perf_event_header header;
 316         u64 size;
 317         u64 offset;
 318         u64 reference;
 319         u32 idx;
 320         u32 tid;
 321         u32 cpu;
 322         u32 reserved__; /* For alignment */
 323 };
 324
 325 #define MAX_AUXTRACE_ERROR_MSG 64
 326
 327 struct auxtrace_error_event {
 328         struct perf_event_header header;
 329         u32 type;
 330         u32 code;
 331         u32 cpu;
 332         u32 pid;
 333         u32 tid;
 334         u32 reserved__; /* For alignment */
 335         u64 ip;
 336         char msg[MAX_AUXTRACE_ERROR_MSG];
 337 };
 338
 339 struct aux_event {
 340         struct perf_event_header header;
 341         u64     aux_offset;
 342         u64     aux_size;
 343         u64     flags;
 344 };
 345
 346 struct itrace_start_event {
 347         struct perf_event_header header;
 348         u32 pid, tid;
 349 };
 350
 351 struct context_switch_event {
 352         struct perf_event_header header;
 353         u32 next_prev_pid;
 354         u32 next_prev_tid;
 355 };
 356
 357 union perf_event {
 358         struct perf_event_header        header;
 359         struct mmap_event               mmap;
 360         struct mmap2_event              mmap2;
 361         struct comm_event               comm;
 362         struct fork_event               fork;
 363         struct lost_event               lost;
 364         struct lost_samples_event       lost_samples;
 365         struct read_event               read;
 366         struct throttle_event           throttle;
 367         struct sample_event             sample;
 368         struct attr_event               attr;
 369         struct event_type_event         event_type;
 370         struct tracing_data_event       tracing_data;
 371         struct build_id_event           build_id;
 372         struct id_index_event           id_index;
 373         struct auxtrace_info_event      auxtrace_info;
 374         struct auxtrace_event           auxtrace;
 375         struct auxtrace_error_event     auxtrace_error;
 376         struct aux_event                aux;
 377         struct itrace_start_event       itrace_start;
 378         struct context_switch_event     context_switch;
 379 };
 380
 381 void perf_event__print_totals(void);
 382
 383 struct perf_tool;
 384 struct thread_map;
 385
 386 typedef int (*perf_event__handler_t)(struct perf_tool *tool,
 387                                      union perf_event *event,
 388                                      struct perf_sample *sample,
 389                                      struct machine *machine);
 390
 391 int perf_event__synthesize_thread_map(struct perf_tool *tool,
 392                                       struct thread_map *threads,
 393                                       perf_event__handler_t process,
 394                                       struct machine *machine, bool mmap_data,
 395                                       unsigned int proc_map_timeout);
 396 int perf_event__synthesize_threads(struct perf_tool *tool,
 397                                    perf_event__handler_t process,
 398                                    struct machine *machine, bool mmap_data,
 399                                    unsigned int proc_map_timeout);
 400 int perf_event__synthesize_kernel_mmap(struct perf_tool *tool,
 401                                        perf_event__handler_t process,
 402                                        struct machine *machine);
 403
 404 int perf_event__synthesize_modules(struct perf_tool *tool,
 405                                    perf_event__handler_t process,
 406                                    struct machine *machine);
 407
 408 int perf_event__process_comm(struct perf_tool *tool,
 409                              union perf_event *event,
 410                              struct perf_sample *sample,
 411                              struct machine *machine);
 412 int perf_event__process_lost(struct perf_tool *tool,
 413                              union perf_event *event,
 414                              struct perf_sample *sample,
 415                              struct machine *machine);
 416 int perf_event__process_lost_samples(struct perf_tool *tool,
 417                                      union perf_event *event,
 418                                      struct perf_sample *sample,
 419                                      struct machine *machine);
 420 int perf_event__process_aux(struct perf_tool *tool,
 421                             union perf_event *event,
 422                             struct perf_sample *sample,
 423                             struct machine *machine);
 424 int perf_event__process_itrace_start(struct perf_tool *tool,
 425                                      union perf_event *event,
 426                                      struct perf_sample *sample,
 427                                      struct machine *machine);
 428 int perf_event__process_switch(struct perf_tool *tool,
 429                                union perf_event *event,
 430                                struct perf_sample *sample,
 431                                struct machine *machine);
 432 int perf_event__process_mmap(struct perf_tool *tool,
 433                              union perf_event *event,
 434                              struct perf_sample *sample,
 435                              struct machine *machine);
 436 int perf_event__process_mmap2(struct perf_tool *tool,
 437                              union perf_event *event,
 438                              struct perf_sample *sample,
 439                              struct machine *machine);
 440 int perf_event__process_fork(struct perf_tool *tool,
 441                              union perf_event *event,
 442                              struct perf_sample *sample,
 443                              struct machine *machine);
 444 int perf_event__process_exit(struct perf_tool *tool,
 445                              union perf_event *event,
 446                              struct perf_sample *sample,
 447                              struct machine *machine);
 448 int perf_event__process(struct perf_tool *tool,
 449                         union perf_event *event,
 450                         struct perf_sample *sample,
 451                         struct machine *machine);
 452
 453 struct addr_location;
 454
 455 int perf_event__preprocess_sample(const union perf_event *event,
 456                                   struct machine *machine,
 457                                   struct addr_location *al,
 458                                   struct perf_sample *sample);
 459
 460 void addr_location__put(struct addr_location *al);
 461
 462 struct thread;
 463
 464 bool is_bts_event(struct perf_event_attr *attr);
 465 bool sample_addr_correlates_sym(struct perf_event_attr *attr);
 466 void perf_event__preprocess_sample_addr(union perf_event *event,
 467                                         struct perf_sample *sample,
 468                                         struct thread *thread,
 469                                         struct addr_location *al);
 470
 471 const char *perf_event__name(unsigned int id);
 472
 473 size_t perf_event__sample_event_size(const struct perf_sample *sample, u64 type,
 474                                      u64 read_format);
 475 int perf_event__synthesize_sample(union perf_event *event, u64 type,
 476                                   u64 read_format,
 477                                   const struct perf_sample *sample,
 478                                   bool swapped);
 479
 480 int perf_event__synthesize_mmap_events(struct perf_tool *tool,
 481                                        union perf_event *event,
 482                                        pid_t pid, pid_t tgid,
 483                                        perf_event__handler_t process,
 484                                        struct machine *machine,
 485                                        bool mmap_data,
 486                                        unsigned int proc_map_timeout);
 487
 488 size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp);
 489 size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp);
 490 size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp);
 491 size_t perf_event__fprintf_task(union perf_event *event, FILE *fp);
 492 size_t perf_event__fprintf_aux(union perf_event *event, FILE *fp);
 493 size_t perf_event__fprintf_itrace_start(union perf_event *event, FILE *fp);
 494 size_t perf_event__fprintf_switch(union perf_event *event, FILE *fp);
 495 size_t perf_event__fprintf(union perf_event *event, FILE *fp);
 496
 497 u64 kallsyms__get_function_start(const char *kallsyms_filename,
 498                                  const char *symbol_name);
 499
 500 #endif /* __PERF_RECORD_H */