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 cycles:16;
 138         u64 reserved:44;
 139 };
 140
 141 struct branch_entry {
 142         u64                     from;
 143         u64                     to;
 144         struct branch_flags     flags;
 145 };
 146
 147 struct branch_stack {
 148         u64                     nr;
 149         struct branch_entry     entries[0];
 150 };
 151
 152 enum {
 153         PERF_IP_FLAG_BRANCH             = 1ULL << 0,
 154         PERF_IP_FLAG_CALL               = 1ULL << 1,
 155         PERF_IP_FLAG_RETURN             = 1ULL << 2,
 156         PERF_IP_FLAG_CONDITIONAL        = 1ULL << 3,
 157         PERF_IP_FLAG_SYSCALLRET         = 1ULL << 4,
 158         PERF_IP_FLAG_ASYNC              = 1ULL << 5,
 159         PERF_IP_FLAG_INTERRUPT          = 1ULL << 6,
 160         PERF_IP_FLAG_TX_ABORT           = 1ULL << 7,
 161         PERF_IP_FLAG_TRACE_BEGIN        = 1ULL << 8,
 162         PERF_IP_FLAG_TRACE_END          = 1ULL << 9,
 163         PERF_IP_FLAG_IN_TX              = 1ULL << 10,
 164 };
 165
 166 #define PERF_IP_FLAG_CHARS "bcrosyiABEx"
 167
 168 #define PERF_BRANCH_MASK                (\
 169         PERF_IP_FLAG_BRANCH             |\
 170         PERF_IP_FLAG_CALL               |\
 171         PERF_IP_FLAG_RETURN             |\
 172         PERF_IP_FLAG_CONDITIONAL        |\
 173         PERF_IP_FLAG_SYSCALLRET         |\
 174         PERF_IP_FLAG_ASYNC              |\
 175         PERF_IP_FLAG_INTERRUPT          |\
 176         PERF_IP_FLAG_TX_ABORT           |\
 177         PERF_IP_FLAG_TRACE_BEGIN        |\
 178         PERF_IP_FLAG_TRACE_END)
 179
 180 struct perf_sample {
 181         u64 ip;
 182         u32 pid, tid;
 183         u64 time;
 184         u64 addr;
 185         u64 id;
 186         u64 stream_id;
 187         u64 period;
 188         u64 weight;
 189         u64 transaction;
 190         u32 cpu;
 191         u32 raw_size;
 192         u64 data_src;
 193         u32 flags;
 194         u16 insn_len;
 195         void *raw_data;
 196         struct ip_callchain *callchain;
 197         struct branch_stack *branch_stack;
 198         struct regs_dump  user_regs;
 199         struct regs_dump  intr_regs;
 200         struct stack_dump user_stack;
 201         struct sample_read read;
 202 };
 203
 204 #define PERF_MEM_DATA_SRC_NONE \
 205         (PERF_MEM_S(OP, NA) |\
 206          PERF_MEM_S(LVL, NA) |\
 207          PERF_MEM_S(SNOOP, NA) |\
 208          PERF_MEM_S(LOCK, NA) |\
 209          PERF_MEM_S(TLB, NA))
 210
 211 struct build_id_event {
 212         struct perf_event_header header;
 213         pid_t                    pid;
 214         u8                       build_id[PERF_ALIGN(BUILD_ID_SIZE, sizeof(u64))];
 215         char                     filename[];
 216 };
 217
 218 enum perf_user_event_type { /* above any possible kernel type */
 219         PERF_RECORD_USER_TYPE_START             = 64,
 220         PERF_RECORD_HEADER_ATTR                 = 64,
 221         PERF_RECORD_HEADER_EVENT_TYPE           = 65, /* depreceated */
 222         PERF_RECORD_HEADER_TRACING_DATA         = 66,
 223         PERF_RECORD_HEADER_BUILD_ID             = 67,
 224         PERF_RECORD_FINISHED_ROUND              = 68,
 225         PERF_RECORD_ID_INDEX                    = 69,
 226         PERF_RECORD_AUXTRACE_INFO               = 70,
 227         PERF_RECORD_AUXTRACE                    = 71,
 228         PERF_RECORD_AUXTRACE_ERROR              = 72,
 229         PERF_RECORD_THREAD_MAP                  = 73,
 230         PERF_RECORD_HEADER_MAX
 231 };
 232
 233 enum auxtrace_error_type {
 234         PERF_AUXTRACE_ERROR_ITRACE  = 1,
 235         PERF_AUXTRACE_ERROR_MAX
 236 };
 237
 238 /*
 239  * The kernel collects the number of events it couldn't send in a stretch and
 240  * when possible sends this number in a PERF_RECORD_LOST event. The number of
 241  * such "chunks" of lost events is stored in .nr_events[PERF_EVENT_LOST] while
 242  * total_lost tells exactly how many events the kernel in fact lost, i.e. it is
 243  * the sum of all struct lost_event.lost fields reported.
 244  *
 245  * The kernel discards mixed up samples and sends the number in a
 246  * PERF_RECORD_LOST_SAMPLES event. The number of lost-samples events is stored
 247  * in .nr_events[PERF_RECORD_LOST_SAMPLES] while total_lost_samples tells
 248  * exactly how many samples the kernel in fact dropped, i.e. it is the sum of
 249  * all struct lost_samples_event.lost fields reported.
 250  *
 251  * The total_period is needed because by default auto-freq is used, so
 252  * multipling nr_events[PERF_EVENT_SAMPLE] by a frequency isn't possible to get
 253  * the total number of low level events, it is necessary to to sum all struct
 254  * sample_event.period and stash the result in total_period.
 255  */
 256 struct events_stats {
 257         u64 total_period;
 258         u64 total_non_filtered_period;
 259         u64 total_lost;
 260         u64 total_lost_samples;
 261         u64 total_aux_lost;
 262         u64 total_invalid_chains;
 263         u32 nr_events[PERF_RECORD_HEADER_MAX];
 264         u32 nr_non_filtered_samples;
 265         u32 nr_lost_warned;
 266         u32 nr_unknown_events;
 267         u32 nr_invalid_chains;
 268         u32 nr_unknown_id;
 269         u32 nr_unprocessable_samples;
 270         u32 nr_auxtrace_errors[PERF_AUXTRACE_ERROR_MAX];
 271         u32 nr_proc_map_timeout;
 272 };
 273
 274 struct attr_event {
 275         struct perf_event_header header;
 276         struct perf_event_attr attr;
 277         u64 id[];
 278 };
 279
 280 #define MAX_EVENT_NAME 64
 281
 282 struct perf_trace_event_type {
 283         u64     event_id;
 284         char    name[MAX_EVENT_NAME];
 285 };
 286
 287 struct event_type_event {
 288         struct perf_event_header header;
 289         struct perf_trace_event_type event_type;
 290 };
 291
 292 struct tracing_data_event {
 293         struct perf_event_header header;
 294         u32 size;
 295 };
 296
 297 struct id_index_entry {
 298         u64 id;
 299         u64 idx;
 300         u64 cpu;
 301         u64 tid;
 302 };
 303
 304 struct id_index_event {
 305         struct perf_event_header header;
 306         u64 nr;
 307         struct id_index_entry entries[0];
 308 };
 309
 310 struct auxtrace_info_event {
 311         struct perf_event_header header;
 312         u32 type;
 313         u32 reserved__; /* For alignment */
 314         u64 priv[];
 315 };
 316
 317 struct auxtrace_event {
 318         struct perf_event_header header;
 319         u64 size;
 320         u64 offset;
 321         u64 reference;
 322         u32 idx;
 323         u32 tid;
 324         u32 cpu;
 325         u32 reserved__; /* For alignment */
 326 };
 327
 328 #define MAX_AUXTRACE_ERROR_MSG 64
 329
 330 struct auxtrace_error_event {
 331         struct perf_event_header header;
 332         u32 type;
 333         u32 code;
 334         u32 cpu;
 335         u32 pid;
 336         u32 tid;
 337         u32 reserved__; /* For alignment */
 338         u64 ip;
 339         char msg[MAX_AUXTRACE_ERROR_MSG];
 340 };
 341
 342 struct aux_event {
 343         struct perf_event_header header;
 344         u64     aux_offset;
 345         u64     aux_size;
 346         u64     flags;
 347 };
 348
 349 struct itrace_start_event {
 350         struct perf_event_header header;
 351         u32 pid, tid;
 352 };
 353
 354 struct context_switch_event {
 355         struct perf_event_header header;
 356         u32 next_prev_pid;
 357         u32 next_prev_tid;
 358 };
 359
 360 struct thread_map_event_entry {
 361         u64     pid;
 362         char    comm[16];
 363 };
 364
 365 struct thread_map_event {
 366         struct perf_event_header        header;
 367         u64                             nr;
 368         struct thread_map_event_entry   entries[];
 369 };
 370
 371 union perf_event {
 372         struct perf_event_header        header;
 373         struct mmap_event               mmap;
 374         struct mmap2_event              mmap2;
 375         struct comm_event               comm;
 376         struct fork_event               fork;
 377         struct lost_event               lost;
 378         struct lost_samples_event       lost_samples;
 379         struct read_event               read;
 380         struct throttle_event           throttle;
 381         struct sample_event             sample;
 382         struct attr_event               attr;
 383         struct event_type_event         event_type;
 384         struct tracing_data_event       tracing_data;
 385         struct build_id_event           build_id;
 386         struct id_index_event           id_index;
 387         struct auxtrace_info_event      auxtrace_info;
 388         struct auxtrace_event           auxtrace;
 389         struct auxtrace_error_event     auxtrace_error;
 390         struct aux_event                aux;
 391         struct itrace_start_event       itrace_start;
 392         struct context_switch_event     context_switch;
 393         struct thread_map_event         thread_map;
 394 };
 395
 396 void perf_event__print_totals(void);
 397
 398 struct perf_tool;
 399 struct thread_map;
 400
 401 typedef int (*perf_event__handler_t)(struct perf_tool *tool,
 402                                      union perf_event *event,
 403                                      struct perf_sample *sample,
 404                                      struct machine *machine);
 405
 406 int perf_event__synthesize_thread_map(struct perf_tool *tool,
 407                                       struct thread_map *threads,
 408                                       perf_event__handler_t process,
 409                                       struct machine *machine, bool mmap_data,
 410                                       unsigned int proc_map_timeout);
 411 int perf_event__synthesize_thread_map2(struct perf_tool *tool,
 412                                       struct thread_map *threads,
 413                                       perf_event__handler_t process,
 414                                       struct machine *machine);
 415 int perf_event__synthesize_threads(struct perf_tool *tool,
 416                                    perf_event__handler_t process,
 417                                    struct machine *machine, bool mmap_data,
 418                                    unsigned int proc_map_timeout);
 419 int perf_event__synthesize_kernel_mmap(struct perf_tool *tool,
 420                                        perf_event__handler_t process,
 421                                        struct machine *machine);
 422
 423 int perf_event__synthesize_modules(struct perf_tool *tool,
 424                                    perf_event__handler_t process,
 425                                    struct machine *machine);
 426
 427 int perf_event__process_comm(struct perf_tool *tool,
 428                              union perf_event *event,
 429                              struct perf_sample *sample,
 430                              struct machine *machine);
 431 int perf_event__process_lost(struct perf_tool *tool,
 432                              union perf_event *event,
 433                              struct perf_sample *sample,
 434                              struct machine *machine);
 435 int perf_event__process_lost_samples(struct perf_tool *tool,
 436                                      union perf_event *event,
 437                                      struct perf_sample *sample,
 438                                      struct machine *machine);
 439 int perf_event__process_aux(struct perf_tool *tool,
 440                             union perf_event *event,
 441                             struct perf_sample *sample,
 442                             struct machine *machine);
 443 int perf_event__process_itrace_start(struct perf_tool *tool,
 444                                      union perf_event *event,
 445                                      struct perf_sample *sample,
 446                                      struct machine *machine);
 447 int perf_event__process_switch(struct perf_tool *tool,
 448                                union perf_event *event,
 449                                struct perf_sample *sample,
 450                                struct machine *machine);
 451 int perf_event__process_mmap(struct perf_tool *tool,
 452                              union perf_event *event,
 453                              struct perf_sample *sample,
 454                              struct machine *machine);
 455 int perf_event__process_mmap2(struct perf_tool *tool,
 456                              union perf_event *event,
 457                              struct perf_sample *sample,
 458                              struct machine *machine);
 459 int perf_event__process_fork(struct perf_tool *tool,
 460                              union perf_event *event,
 461                              struct perf_sample *sample,
 462                              struct machine *machine);
 463 int perf_event__process_exit(struct perf_tool *tool,
 464                              union perf_event *event,
 465                              struct perf_sample *sample,
 466                              struct machine *machine);
 467 int perf_event__process(struct perf_tool *tool,
 468                         union perf_event *event,
 469                         struct perf_sample *sample,
 470                         struct machine *machine);
 471
 472 struct addr_location;
 473
 474 int perf_event__preprocess_sample(const union perf_event *event,
 475                                   struct machine *machine,
 476                                   struct addr_location *al,
 477                                   struct perf_sample *sample);
 478
 479 void addr_location__put(struct addr_location *al);
 480
 481 struct thread;
 482
 483 bool is_bts_event(struct perf_event_attr *attr);
 484 bool sample_addr_correlates_sym(struct perf_event_attr *attr);
 485 void perf_event__preprocess_sample_addr(union perf_event *event,
 486                                         struct perf_sample *sample,
 487                                         struct thread *thread,
 488                                         struct addr_location *al);
 489
 490 const char *perf_event__name(unsigned int id);
 491
 492 size_t perf_event__sample_event_size(const struct perf_sample *sample, u64 type,
 493                                      u64 read_format);
 494 int perf_event__synthesize_sample(union perf_event *event, u64 type,
 495                                   u64 read_format,
 496                                   const struct perf_sample *sample,
 497                                   bool swapped);
 498
 499 pid_t perf_event__synthesize_comm(struct perf_tool *tool,
 500                                   union perf_event *event, pid_t pid,
 501                                   perf_event__handler_t process,
 502                                   struct machine *machine);
 503
 504 int perf_event__synthesize_mmap_events(struct perf_tool *tool,
 505                                        union perf_event *event,
 506                                        pid_t pid, pid_t tgid,
 507                                        perf_event__handler_t process,
 508                                        struct machine *machine,
 509                                        bool mmap_data,
 510                                        unsigned int proc_map_timeout);
 511
 512 size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp);
 513 size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp);
 514 size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp);
 515 size_t perf_event__fprintf_task(union perf_event *event, FILE *fp);
 516 size_t perf_event__fprintf_aux(union perf_event *event, FILE *fp);
 517 size_t perf_event__fprintf_itrace_start(union perf_event *event, FILE *fp);
 518 size_t perf_event__fprintf_switch(union perf_event *event, FILE *fp);
 519 size_t perf_event__fprintf_thread_map(union perf_event *event, FILE *fp);
 520 size_t perf_event__fprintf(union perf_event *event, FILE *fp);
 521
 522 u64 kallsyms__get_function_start(const char *kallsyms_filename,
 523                                  const char *symbol_name);
 524
 525 #endif /* __PERF_RECORD_H */