tools/perf/util/evsel.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __PERF_EVSEL_H
   3 #define __PERF_EVSEL_H 1
   4
   5 #include <linux/list.h>
   6 #include <stdbool.h>
   7 #include <stddef.h>
   8 #include <linux/perf_event.h>
   9 #include <linux/types.h>
  10 #include "xyarray.h"
  11 #include "symbol_conf.h"
  12 #include "cpumap.h"
  13 #include "counts.h"
  14
  15 struct perf_evsel;
  16
  17 /*
  18  * Per fd, to map back from PERF_SAMPLE_ID to evsel, only used when there are
  19  * more than one entry in the evlist.
  20  */
  21 struct perf_sample_id {
  22         struct hlist_node       node;
  23         u64                     id;
  24         struct perf_evsel       *evsel;
  25         int                     idx;
  26         int                     cpu;
  27         pid_t                   tid;
  28
  29         /* Holds total ID period value for PERF_SAMPLE_READ processing. */
  30         u64                     period;
  31 };
  32
  33 struct cgroup;
  34
  35 /*
  36  * The 'struct perf_evsel_config_term' is used to pass event
  37  * specific configuration data to perf_evsel__config routine.
  38  * It is allocated within event parsing and attached to
  39  * perf_evsel::config_terms list head.
  40 */
  41 enum term_type {
  42         PERF_EVSEL__CONFIG_TERM_PERIOD,
  43         PERF_EVSEL__CONFIG_TERM_FREQ,
  44         PERF_EVSEL__CONFIG_TERM_TIME,
  45         PERF_EVSEL__CONFIG_TERM_CALLGRAPH,
  46         PERF_EVSEL__CONFIG_TERM_STACK_USER,
  47         PERF_EVSEL__CONFIG_TERM_INHERIT,
  48         PERF_EVSEL__CONFIG_TERM_MAX_STACK,
  49         PERF_EVSEL__CONFIG_TERM_MAX_EVENTS,
  50         PERF_EVSEL__CONFIG_TERM_OVERWRITE,
  51         PERF_EVSEL__CONFIG_TERM_DRV_CFG,
  52         PERF_EVSEL__CONFIG_TERM_BRANCH,
  53         PERF_EVSEL__CONFIG_TERM_PERCORE,
  54 };
  55
  56 struct perf_evsel_config_term {
  57         struct list_head        list;
  58         enum term_type  type;
  59         union {
  60                 u64     period;
  61                 u64     freq;
  62                 bool    time;
  63                 char    *callgraph;
  64                 char    *drv_cfg;
  65                 u64     stack_user;
  66                 int     max_stack;
  67                 bool    inherit;
  68                 bool    overwrite;
  69                 char    *branch;
  70                 unsigned long max_events;
  71                 bool    percore;
  72         } val;
  73         bool weak;
  74 };
  75
  76 struct perf_stat_evsel;
  77
  78 typedef int (perf_evsel__sb_cb_t)(union perf_event *event, void *data);
  79
  80 enum perf_tool_event {
  81         PERF_TOOL_NONE          = 0,
  82         PERF_TOOL_DURATION_TIME = 1,
  83 };
  84
  85 /** struct perf_evsel - event selector
  86  *
  87  * @evlist - evlist this evsel is in, if it is in one.
  88  * @node - To insert it into evlist->entries or in other list_heads, say in
  89  *         the event parsing routines.
  90  * @name - Can be set to retain the original event name passed by the user,
  91  *         so that when showing results in tools such as 'perf stat', we
  92  *         show the name used, not some alias.
  93  * @id_pos: the position of the event id (PERF_SAMPLE_ID or
  94  *          PERF_SAMPLE_IDENTIFIER) in a sample event i.e. in the array of
  95  *          struct sample_event
  96  * @is_pos: the position (counting backwards) of the event id (PERF_SAMPLE_ID or
  97  *          PERF_SAMPLE_IDENTIFIER) in a non-sample event i.e. if sample_id_all
  98  *          is used there is an id sample appended to non-sample events
  99  * @priv:   And what is in its containing unnamed union are tool specific
 100  */
 101 struct perf_evsel {
 102         struct list_head        node;
 103         struct perf_evlist      *evlist;
 104         struct perf_event_attr  attr;
 105         char                    *filter;
 106         struct xyarray          *fd;
 107         struct xyarray          *sample_id;
 108         u64                     *id;
 109         struct perf_counts      *counts;
 110         struct perf_counts      *prev_raw_counts;
 111         int                     idx;
 112         u32                     ids;
 113         unsigned long           max_events;
 114         unsigned long           nr_events_printed;
 115         char                    *name;
 116         double                  scale;
 117         const char              *unit;
 118         struct tep_event        *tp_format;
 119         off_t                   id_offset;
 120         struct perf_stat_evsel  *stats;
 121         void                    *priv;
 122         u64                     db_id;
 123         struct cgroup           *cgrp;
 124         void                    *handler;
 125         struct cpu_map          *cpus;
 126         struct cpu_map          *own_cpus;
 127         struct thread_map       *threads;
 128         unsigned int            sample_size;
 129         int                     id_pos;
 130         int                     is_pos;
 131         enum perf_tool_event    tool_event;
 132         bool                    uniquified_name;
 133         bool                    snapshot;
 134         bool                    supported;
 135         bool                    needs_swap;
 136         bool                    disabled;
 137         bool                    no_aux_samples;
 138         bool                    immediate;
 139         bool                    system_wide;
 140         bool                    tracking;
 141         bool                    per_pkg;
 142         bool                    precise_max;
 143         bool                    ignore_missing_thread;
 144         bool                    forced_leader;
 145         bool                    use_uncore_alias;
 146         /* parse modifier helper */
 147         int                     exclude_GH;
 148         int                     nr_members;
 149         int                     sample_read;
 150         unsigned long           *per_pkg_mask;
 151         struct perf_evsel       *leader;
 152         char                    *group_name;
 153         bool                    cmdline_group_boundary;
 154         struct list_head        config_terms;
 155         int                     bpf_fd;
 156         bool                    auto_merge_stats;
 157         bool                    merged_stat;
 158         const char *            metric_expr;
 159         const char *            metric_name;
 160         struct perf_evsel       **metric_events;
 161         bool                    collect_stat;
 162         bool                    weak_group;
 163         bool                    percore;
 164         const char              *pmu_name;
 165         struct {
 166                 perf_evsel__sb_cb_t     *cb;
 167                 void                    *data;
 168         } side_band;
 169 };
 170
 171 union u64_swap {
 172         u64 val64;
 173         u32 val32[2];
 174 };
 175
 176 struct perf_missing_features {
 177         bool sample_id_all;
 178         bool exclude_guest;
 179         bool mmap2;
 180         bool cloexec;
 181         bool clockid;
 182         bool clockid_wrong;
 183         bool lbr_flags;
 184         bool write_backward;
 185         bool group_read;
 186         bool ksymbol;
 187         bool bpf_event;
 188 };
 189
 190 extern struct perf_missing_features perf_missing_features;
 191
 192 struct cpu_map;
 193 struct target;
 194 struct thread_map;
 195 struct record_opts;
 196
 197 static inline struct cpu_map *perf_evsel__cpus(struct perf_evsel *evsel)
 198 {
 199         return evsel->cpus;
 200 }
 201
 202 static inline int perf_evsel__nr_cpus(struct perf_evsel *evsel)
 203 {
 204         return perf_evsel__cpus(evsel)->nr;
 205 }
 206
 207 void perf_counts_values__scale(struct perf_counts_values *count,
 208                                bool scale, s8 *pscaled);
 209
 210 void perf_evsel__compute_deltas(struct perf_evsel *evsel, int cpu, int thread,
 211                                 struct perf_counts_values *count);
 212
 213 int perf_evsel__object_config(size_t object_size,
 214                               int (*init)(struct perf_evsel *evsel),
 215                               void (*fini)(struct perf_evsel *evsel));
 216
 217 struct perf_evsel *perf_evsel__new_idx(struct perf_event_attr *attr, int idx);
 218
 219 static inline struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr)
 220 {
 221         return perf_evsel__new_idx(attr, 0);
 222 }
 223
 224 struct perf_evsel *perf_evsel__newtp_idx(const char *sys, const char *name, int idx);
 225
 226 /*
 227  * Returns pointer with encoded error via <linux/err.h> interface.
 228  */
 229 static inline struct perf_evsel *perf_evsel__newtp(const char *sys, const char *name)
 230 {
 231         return perf_evsel__newtp_idx(sys, name, 0);
 232 }
 233
 234 struct perf_evsel *perf_evsel__new_cycles(bool precise);
 235
 236 struct tep_event *event_format__new(const char *sys, const char *name);
 237
 238 void perf_evsel__init(struct perf_evsel *evsel,
 239                       struct perf_event_attr *attr, int idx);
 240 void perf_evsel__exit(struct perf_evsel *evsel);
 241 void perf_evsel__delete(struct perf_evsel *evsel);
 242
 243 struct callchain_param;
 244
 245 void perf_evsel__config(struct perf_evsel *evsel,
 246                         struct record_opts *opts,
 247                         struct callchain_param *callchain);
 248 void perf_evsel__config_callchain(struct perf_evsel *evsel,
 249                                   struct record_opts *opts,
 250                                   struct callchain_param *callchain);
 251
 252 int __perf_evsel__sample_size(u64 sample_type);
 253 void perf_evsel__calc_id_pos(struct perf_evsel *evsel);
 254
 255 bool perf_evsel__is_cache_op_valid(u8 type, u8 op);
 256
 257 #define PERF_EVSEL__MAX_ALIASES 8
 258
 259 extern const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX]
 260                                        [PERF_EVSEL__MAX_ALIASES];
 261 extern const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX]
 262                                           [PERF_EVSEL__MAX_ALIASES];
 263 extern const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX]
 264                                               [PERF_EVSEL__MAX_ALIASES];
 265 extern const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX];
 266 extern const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX];
 267 int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result,
 268                                             char *bf, size_t size);
 269 const char *perf_evsel__name(struct perf_evsel *evsel);
 270
 271 const char *perf_evsel__group_name(struct perf_evsel *evsel);
 272 int perf_evsel__group_desc(struct perf_evsel *evsel, char *buf, size_t size);
 273
 274 int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads);
 275 void perf_evsel__close_fd(struct perf_evsel *evsel);
 276
 277 void __perf_evsel__set_sample_bit(struct perf_evsel *evsel,
 278                                   enum perf_event_sample_format bit);
 279 void __perf_evsel__reset_sample_bit(struct perf_evsel *evsel,
 280                                     enum perf_event_sample_format bit);
 281
 282 #define perf_evsel__set_sample_bit(evsel, bit) \
 283         __perf_evsel__set_sample_bit(evsel, PERF_SAMPLE_##bit)
 284
 285 #define perf_evsel__reset_sample_bit(evsel, bit) \
 286         __perf_evsel__reset_sample_bit(evsel, PERF_SAMPLE_##bit)
 287
 288 void perf_evsel__set_sample_id(struct perf_evsel *evsel,
 289                                bool use_sample_identifier);
 290
 291 int perf_evsel__set_filter(struct perf_evsel *evsel, const char *filter);
 292 int perf_evsel__append_tp_filter(struct perf_evsel *evsel, const char *filter);
 293 int perf_evsel__append_addr_filter(struct perf_evsel *evsel,
 294                                    const char *filter);
 295 int perf_evsel__apply_filter(struct perf_evsel *evsel, const char *filter);
 296 int perf_evsel__enable(struct perf_evsel *evsel);
 297 int perf_evsel__disable(struct perf_evsel *evsel);
 298
 299 int perf_evsel__open_per_cpu(struct perf_evsel *evsel,
 300                              struct cpu_map *cpus);
 301 int perf_evsel__open_per_thread(struct perf_evsel *evsel,
 302                                 struct thread_map *threads);
 303 int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus,
 304                      struct thread_map *threads);
 305 void perf_evsel__close(struct perf_evsel *evsel);
 306
 307 struct perf_sample;
 308
 309 void *perf_evsel__rawptr(struct perf_evsel *evsel, struct perf_sample *sample,
 310                          const char *name);
 311 u64 perf_evsel__intval(struct perf_evsel *evsel, struct perf_sample *sample,
 312                        const char *name);
 313
 314 static inline char *perf_evsel__strval(struct perf_evsel *evsel,
 315                                        struct perf_sample *sample,
 316                                        const char *name)
 317 {
 318         return perf_evsel__rawptr(evsel, sample, name);
 319 }
 320
 321 struct tep_format_field;
 322
 323 u64 format_field__intval(struct tep_format_field *field, struct perf_sample *sample, bool needs_swap);
 324
 325 struct tep_format_field *perf_evsel__field(struct perf_evsel *evsel, const char *name);
 326
 327 #define perf_evsel__match(evsel, t, c)          \
 328         (evsel->attr.type == PERF_TYPE_##t &&   \
 329          evsel->attr.config == PERF_COUNT_##c)
 330
 331 static inline bool perf_evsel__match2(struct perf_evsel *e1,
 332                                       struct perf_evsel *e2)
 333 {
 334         return (e1->attr.type == e2->attr.type) &&
 335                (e1->attr.config == e2->attr.config);
 336 }
 337
 338 #define perf_evsel__cmp(a, b)                   \
 339         ((a) &&                                 \
 340          (b) &&                                 \
 341          (a)->attr.type == (b)->attr.type &&    \
 342          (a)->attr.config == (b)->attr.config)
 343
 344 int perf_evsel__read(struct perf_evsel *evsel, int cpu, int thread,
 345                      struct perf_counts_values *count);
 346
 347 int perf_evsel__read_counter(struct perf_evsel *evsel, int cpu, int thread);
 348
 349 int __perf_evsel__read_on_cpu(struct perf_evsel *evsel,
 350                               int cpu, int thread, bool scale);
 351
 352 /**
 353  * perf_evsel__read_on_cpu - Read out the results on a CPU and thread
 354  *
 355  * @evsel - event selector to read value
 356  * @cpu - CPU of interest
 357  * @thread - thread of interest
 358  */
 359 static inline int perf_evsel__read_on_cpu(struct perf_evsel *evsel,
 360                                           int cpu, int thread)
 361 {
 362         return __perf_evsel__read_on_cpu(evsel, cpu, thread, false);
 363 }
 364
 365 /**
 366  * perf_evsel__read_on_cpu_scaled - Read out the results on a CPU and thread, scaled
 367  *
 368  * @evsel - event selector to read value
 369  * @cpu - CPU of interest
 370  * @thread - thread of interest
 371  */
 372 static inline int perf_evsel__read_on_cpu_scaled(struct perf_evsel *evsel,
 373                                                  int cpu, int thread)
 374 {
 375         return __perf_evsel__read_on_cpu(evsel, cpu, thread, true);
 376 }
 377
 378 int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event,
 379                              struct perf_sample *sample);
 380
 381 int perf_evsel__parse_sample_timestamp(struct perf_evsel *evsel,
 382                                        union perf_event *event,
 383                                        u64 *timestamp);
 384
 385 static inline struct perf_evsel *perf_evsel__next(struct perf_evsel *evsel)
 386 {
 387         return list_entry(evsel->node.next, struct perf_evsel, node);
 388 }
 389
 390 static inline struct perf_evsel *perf_evsel__prev(struct perf_evsel *evsel)
 391 {
 392         return list_entry(evsel->node.prev, struct perf_evsel, node);
 393 }
 394
 395 /**
 396  * perf_evsel__is_group_leader - Return whether given evsel is a leader event
 397  *
 398  * @evsel - evsel selector to be tested
 399  *
 400  * Return %true if @evsel is a group leader or a stand-alone event
 401  */
 402 static inline bool perf_evsel__is_group_leader(const struct perf_evsel *evsel)
 403 {
 404         return evsel->leader == evsel;
 405 }
 406
 407 /**
 408  * perf_evsel__is_group_event - Return whether given evsel is a group event
 409  *
 410  * @evsel - evsel selector to be tested
 411  *
 412  * Return %true iff event group view is enabled and @evsel is a actual group
 413  * leader which has other members in the group
 414  */
 415 static inline bool perf_evsel__is_group_event(struct perf_evsel *evsel)
 416 {
 417         if (!symbol_conf.event_group)
 418                 return false;
 419
 420         return perf_evsel__is_group_leader(evsel) && evsel->nr_members > 1;
 421 }
 422
 423 bool perf_evsel__is_function_event(struct perf_evsel *evsel);
 424
 425 static inline bool perf_evsel__is_bpf_output(struct perf_evsel *evsel)
 426 {
 427         return perf_evsel__match(evsel, SOFTWARE, SW_BPF_OUTPUT);
 428 }
 429
 430 static inline bool perf_evsel__is_clock(struct perf_evsel *evsel)
 431 {
 432         return perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
 433                perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK);
 434 }
 435
 436 struct perf_attr_details {
 437         bool freq;
 438         bool verbose;
 439         bool event_group;
 440         bool force;
 441         bool trace_fields;
 442 };
 443
 444 int perf_evsel__fprintf(struct perf_evsel *evsel,
 445                         struct perf_attr_details *details, FILE *fp);
 446
 447 #define EVSEL__PRINT_IP                 (1<<0)
 448 #define EVSEL__PRINT_SYM                (1<<1)
 449 #define EVSEL__PRINT_DSO                (1<<2)
 450 #define EVSEL__PRINT_SYMOFFSET          (1<<3)
 451 #define EVSEL__PRINT_ONELINE            (1<<4)
 452 #define EVSEL__PRINT_SRCLINE            (1<<5)
 453 #define EVSEL__PRINT_UNKNOWN_AS_ADDR    (1<<6)
 454 #define EVSEL__PRINT_CALLCHAIN_ARROW    (1<<7)
 455 #define EVSEL__PRINT_SKIP_IGNORED       (1<<8)
 456
 457 struct callchain_cursor;
 458
 459 int sample__fprintf_callchain(struct perf_sample *sample, int left_alignment,
 460                               unsigned int print_opts,
 461                               struct callchain_cursor *cursor, FILE *fp);
 462
 463 int sample__fprintf_sym(struct perf_sample *sample, struct addr_location *al,
 464                         int left_alignment, unsigned int print_opts,
 465                         struct callchain_cursor *cursor, FILE *fp);
 466
 467 bool perf_evsel__fallback(struct perf_evsel *evsel, int err,
 468                           char *msg, size_t msgsize);
 469 int perf_evsel__open_strerror(struct perf_evsel *evsel, struct target *target,
 470                               int err, char *msg, size_t size);
 471
 472 static inline int perf_evsel__group_idx(struct perf_evsel *evsel)
 473 {
 474         return evsel->idx - evsel->leader->idx;
 475 }
 476
 477 /* Iterates group WITHOUT the leader. */
 478 #define for_each_group_member(_evsel, _leader)                                  \
 479 for ((_evsel) = list_entry((_leader)->node.next, struct perf_evsel, node);      \
 480      (_evsel) && (_evsel)->leader == (_leader);                                 \
 481      (_evsel) = list_entry((_evsel)->node.next, struct perf_evsel, node))
 482
 483 /* Iterates group WITH the leader. */
 484 #define for_each_group_evsel(_evsel, _leader)                                   \
 485 for ((_evsel) = _leader;                                                        \
 486      (_evsel) && (_evsel)->leader == (_leader);                                 \
 487      (_evsel) = list_entry((_evsel)->node.next, struct perf_evsel, node))
 488
 489 static inline bool perf_evsel__has_branch_callstack(const struct perf_evsel *evsel)
 490 {
 491         return evsel->attr.branch_sample_type & PERF_SAMPLE_BRANCH_CALL_STACK;
 492 }
 493
 494 static inline bool evsel__has_callchain(const struct perf_evsel *evsel)
 495 {
 496         return (evsel->attr.sample_type & PERF_SAMPLE_CALLCHAIN) != 0;
 497 }
 498
 499 typedef int (*attr__fprintf_f)(FILE *, const char *, const char *, void *);
 500
 501 int perf_event_attr__fprintf(FILE *fp, struct perf_event_attr *attr,
 502                              attr__fprintf_f attr__fprintf, void *priv);
 503
 504 struct perf_env *perf_evsel__env(struct perf_evsel *evsel);
 505
 506 int perf_evsel__store_ids(struct perf_evsel *evsel, struct perf_evlist *evlist);
 507 #endif /* __PERF_EVSEL_H */