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.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_sel;
  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 {
  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_OVERWRITE,
  50         PERF_EVSEL__CONFIG_TERM_DRV_CFG,
  51         PERF_EVSEL__CONFIG_TERM_BRANCH,
  52         PERF_EVSEL__CONFIG_TERM_MAX,
  53 };
  54
  55 struct perf_evsel_config_term {
  56         struct list_head        list;
  57         int     type;
  58         union {
  59                 u64     period;
  60                 u64     freq;
  61                 bool    time;
  62                 char    *callgraph;
  63                 char    *drv_cfg;
  64                 u64     stack_user;
  65                 int     max_stack;
  66                 bool    inherit;
  67                 bool    overwrite;
  68                 char    *branch;
  69         } val;
  70 };
  71
  72 struct perf_stat_evsel;
  73
  74 /** struct perf_evsel - event selector
  75  *
  76  * @evlist - evlist this evsel is in, if it is in one.
  77  * @node - To insert it into evlist->entries or in other list_heads, say in
  78  *         the event parsing routines.
  79  * @name - Can be set to retain the original event name passed by the user,
  80  *         so that when showing results in tools such as 'perf stat', we
  81  *         show the name used, not some alias.
  82  * @id_pos: the position of the event id (PERF_SAMPLE_ID or
  83  *          PERF_SAMPLE_IDENTIFIER) in a sample event i.e. in the array of
  84  *          struct sample_event
  85  * @is_pos: the position (counting backwards) of the event id (PERF_SAMPLE_ID or
  86  *          PERF_SAMPLE_IDENTIFIER) in a non-sample event i.e. if sample_id_all
  87  *          is used there is an id sample appended to non-sample events
  88  * @priv:   And what is in its containing unnamed union are tool specific
  89  */
  90 struct perf_evsel {
  91         struct list_head        node;
  92         struct perf_evlist      *evlist;
  93         struct perf_event_attr  attr;
  94         char                    *filter;
  95         struct xyarray          *fd;
  96         struct xyarray          *sample_id;
  97         u64                     *id;
  98         struct perf_counts      *counts;
  99         struct perf_counts      *prev_raw_counts;
 100         int                     idx;
 101         u32                     ids;
 102         char                    *name;
 103         double                  scale;
 104         const char              *unit;
 105         struct event_format     *tp_format;
 106         off_t                   id_offset;
 107         struct perf_stat_evsel  *stats;
 108         void                    *priv;
 109         u64                     db_id;
 110         struct cgroup_sel       *cgrp;
 111         void                    *handler;
 112         struct cpu_map          *cpus;
 113         struct cpu_map          *own_cpus;
 114         struct thread_map       *threads;
 115         unsigned int            sample_size;
 116         int                     id_pos;
 117         int                     is_pos;
 118         bool                    snapshot;
 119         bool                    supported;
 120         bool                    needs_swap;
 121         bool                    no_aux_samples;
 122         bool                    immediate;
 123         bool                    system_wide;
 124         bool                    tracking;
 125         bool                    per_pkg;
 126         bool                    precise_max;
 127         bool                    ignore_missing_thread;
 128         /* parse modifier helper */
 129         int                     exclude_GH;
 130         int                     nr_members;
 131         int                     sample_read;
 132         unsigned long           *per_pkg_mask;
 133         struct perf_evsel       *leader;
 134         char                    *group_name;
 135         bool                    cmdline_group_boundary;
 136         struct list_head        config_terms;
 137         int                     bpf_fd;
 138         bool                    auto_merge_stats;
 139         bool                    merged_stat;
 140         const char *            metric_expr;
 141         const char *            metric_name;
 142         struct perf_evsel       **metric_events;
 143         bool                    collect_stat;
 144         bool                    weak_group;
 145 };
 146
 147 union u64_swap {
 148         u64 val64;
 149         u32 val32[2];
 150 };
 151
 152 struct cpu_map;
 153 struct target;
 154 struct thread_map;
 155 struct record_opts;
 156
 157 static inline struct cpu_map *perf_evsel__cpus(struct perf_evsel *evsel)
 158 {
 159         return evsel->cpus;
 160 }
 161
 162 static inline int perf_evsel__nr_cpus(struct perf_evsel *evsel)
 163 {
 164         return perf_evsel__cpus(evsel)->nr;
 165 }
 166
 167 void perf_counts_values__scale(struct perf_counts_values *count,
 168                                bool scale, s8 *pscaled);
 169
 170 void perf_evsel__compute_deltas(struct perf_evsel *evsel, int cpu, int thread,
 171                                 struct perf_counts_values *count);
 172
 173 int perf_evsel__object_config(size_t object_size,
 174                               int (*init)(struct perf_evsel *evsel),
 175                               void (*fini)(struct perf_evsel *evsel));
 176
 177 struct perf_evsel *perf_evsel__new_idx(struct perf_event_attr *attr, int idx);
 178
 179 static inline struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr)
 180 {
 181         return perf_evsel__new_idx(attr, 0);
 182 }
 183
 184 struct perf_evsel *perf_evsel__newtp_idx(const char *sys, const char *name, int idx);
 185
 186 /*
 187  * Returns pointer with encoded error via <linux/err.h> interface.
 188  */
 189 static inline struct perf_evsel *perf_evsel__newtp(const char *sys, const char *name)
 190 {
 191         return perf_evsel__newtp_idx(sys, name, 0);
 192 }
 193
 194 struct perf_evsel *perf_evsel__new_cycles(bool precise);
 195
 196 struct event_format *event_format__new(const char *sys, const char *name);
 197
 198 void perf_evsel__init(struct perf_evsel *evsel,
 199                       struct perf_event_attr *attr, int idx);
 200 void perf_evsel__exit(struct perf_evsel *evsel);
 201 void perf_evsel__delete(struct perf_evsel *evsel);
 202
 203 struct callchain_param;
 204
 205 void perf_evsel__config(struct perf_evsel *evsel,
 206                         struct record_opts *opts,
 207                         struct callchain_param *callchain);
 208 void perf_evsel__config_callchain(struct perf_evsel *evsel,
 209                                   struct record_opts *opts,
 210                                   struct callchain_param *callchain);
 211
 212 int __perf_evsel__sample_size(u64 sample_type);
 213 void perf_evsel__calc_id_pos(struct perf_evsel *evsel);
 214
 215 bool perf_evsel__is_cache_op_valid(u8 type, u8 op);
 216
 217 #define PERF_EVSEL__MAX_ALIASES 8
 218
 219 extern const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX]
 220                                        [PERF_EVSEL__MAX_ALIASES];
 221 extern const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX]
 222                                           [PERF_EVSEL__MAX_ALIASES];
 223 extern const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX]
 224                                               [PERF_EVSEL__MAX_ALIASES];
 225 extern const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX];
 226 extern const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX];
 227 int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result,
 228                                             char *bf, size_t size);
 229 const char *perf_evsel__name(struct perf_evsel *evsel);
 230
 231 const char *perf_evsel__group_name(struct perf_evsel *evsel);
 232 int perf_evsel__group_desc(struct perf_evsel *evsel, char *buf, size_t size);
 233
 234 int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads);
 235 void perf_evsel__close_fd(struct perf_evsel *evsel);
 236
 237 void __perf_evsel__set_sample_bit(struct perf_evsel *evsel,
 238                                   enum perf_event_sample_format bit);
 239 void __perf_evsel__reset_sample_bit(struct perf_evsel *evsel,
 240                                     enum perf_event_sample_format bit);
 241
 242 #define perf_evsel__set_sample_bit(evsel, bit) \
 243         __perf_evsel__set_sample_bit(evsel, PERF_SAMPLE_##bit)
 244
 245 #define perf_evsel__reset_sample_bit(evsel, bit) \
 246         __perf_evsel__reset_sample_bit(evsel, PERF_SAMPLE_##bit)
 247
 248 void perf_evsel__set_sample_id(struct perf_evsel *evsel,
 249                                bool use_sample_identifier);
 250
 251 int perf_evsel__set_filter(struct perf_evsel *evsel, const char *filter);
 252 int perf_evsel__append_tp_filter(struct perf_evsel *evsel, const char *filter);
 253 int perf_evsel__append_addr_filter(struct perf_evsel *evsel,
 254                                    const char *filter);
 255 int perf_evsel__apply_filter(struct perf_evsel *evsel, const char *filter);
 256 int perf_evsel__enable(struct perf_evsel *evsel);
 257 int perf_evsel__disable(struct perf_evsel *evsel);
 258
 259 int perf_evsel__open_per_cpu(struct perf_evsel *evsel,
 260                              struct cpu_map *cpus);
 261 int perf_evsel__open_per_thread(struct perf_evsel *evsel,
 262                                 struct thread_map *threads);
 263 int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus,
 264                      struct thread_map *threads);
 265 void perf_evsel__close(struct perf_evsel *evsel);
 266
 267 struct perf_sample;
 268
 269 void *perf_evsel__rawptr(struct perf_evsel *evsel, struct perf_sample *sample,
 270                          const char *name);
 271 u64 perf_evsel__intval(struct perf_evsel *evsel, struct perf_sample *sample,
 272                        const char *name);
 273
 274 static inline char *perf_evsel__strval(struct perf_evsel *evsel,
 275                                        struct perf_sample *sample,
 276                                        const char *name)
 277 {
 278         return perf_evsel__rawptr(evsel, sample, name);
 279 }
 280
 281 struct format_field;
 282
 283 u64 format_field__intval(struct format_field *field, struct perf_sample *sample, bool needs_swap);
 284
 285 struct format_field *perf_evsel__field(struct perf_evsel *evsel, const char *name);
 286
 287 #define perf_evsel__match(evsel, t, c)          \
 288         (evsel->attr.type == PERF_TYPE_##t &&   \
 289          evsel->attr.config == PERF_COUNT_##c)
 290
 291 static inline bool perf_evsel__match2(struct perf_evsel *e1,
 292                                       struct perf_evsel *e2)
 293 {
 294         return (e1->attr.type == e2->attr.type) &&
 295                (e1->attr.config == e2->attr.config);
 296 }
 297
 298 #define perf_evsel__cmp(a, b)                   \
 299         ((a) &&                                 \
 300          (b) &&                                 \
 301          (a)->attr.type == (b)->attr.type &&    \
 302          (a)->attr.config == (b)->attr.config)
 303
 304 int perf_evsel__read(struct perf_evsel *evsel, int cpu, int thread,
 305                      struct perf_counts_values *count);
 306
 307 int perf_evsel__read_counter(struct perf_evsel *evsel, int cpu, int thread);
 308
 309 int __perf_evsel__read_on_cpu(struct perf_evsel *evsel,
 310                               int cpu, int thread, bool scale);
 311
 312 /**
 313  * perf_evsel__read_on_cpu - Read out the results on a CPU and thread
 314  *
 315  * @evsel - event selector to read value
 316  * @cpu - CPU of interest
 317  * @thread - thread of interest
 318  */
 319 static inline int perf_evsel__read_on_cpu(struct perf_evsel *evsel,
 320                                           int cpu, int thread)
 321 {
 322         return __perf_evsel__read_on_cpu(evsel, cpu, thread, false);
 323 }
 324
 325 /**
 326  * perf_evsel__read_on_cpu_scaled - Read out the results on a CPU and thread, scaled
 327  *
 328  * @evsel - event selector to read value
 329  * @cpu - CPU of interest
 330  * @thread - thread of interest
 331  */
 332 static inline int perf_evsel__read_on_cpu_scaled(struct perf_evsel *evsel,
 333                                                  int cpu, int thread)
 334 {
 335         return __perf_evsel__read_on_cpu(evsel, cpu, thread, true);
 336 }
 337
 338 int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event,
 339                              struct perf_sample *sample);
 340
 341 static inline struct perf_evsel *perf_evsel__next(struct perf_evsel *evsel)
 342 {
 343         return list_entry(evsel->node.next, struct perf_evsel, node);
 344 }
 345
 346 static inline struct perf_evsel *perf_evsel__prev(struct perf_evsel *evsel)
 347 {
 348         return list_entry(evsel->node.prev, struct perf_evsel, node);
 349 }
 350
 351 /**
 352  * perf_evsel__is_group_leader - Return whether given evsel is a leader event
 353  *
 354  * @evsel - evsel selector to be tested
 355  *
 356  * Return %true if @evsel is a group leader or a stand-alone event
 357  */
 358 static inline bool perf_evsel__is_group_leader(const struct perf_evsel *evsel)
 359 {
 360         return evsel->leader == evsel;
 361 }
 362
 363 /**
 364  * perf_evsel__is_group_event - Return whether given evsel is a group event
 365  *
 366  * @evsel - evsel selector to be tested
 367  *
 368  * Return %true iff event group view is enabled and @evsel is a actual group
 369  * leader which has other members in the group
 370  */
 371 static inline bool perf_evsel__is_group_event(struct perf_evsel *evsel)
 372 {
 373         if (!symbol_conf.event_group)
 374                 return false;
 375
 376         return perf_evsel__is_group_leader(evsel) && evsel->nr_members > 1;
 377 }
 378
 379 bool perf_evsel__is_function_event(struct perf_evsel *evsel);
 380
 381 static inline bool perf_evsel__is_bpf_output(struct perf_evsel *evsel)
 382 {
 383         struct perf_event_attr *attr = &evsel->attr;
 384
 385         return (attr->config == PERF_COUNT_SW_BPF_OUTPUT) &&
 386                 (attr->type == PERF_TYPE_SOFTWARE);
 387 }
 388
 389 struct perf_attr_details {
 390         bool freq;
 391         bool verbose;
 392         bool event_group;
 393         bool force;
 394         bool trace_fields;
 395 };
 396
 397 int perf_evsel__fprintf(struct perf_evsel *evsel,
 398                         struct perf_attr_details *details, FILE *fp);
 399
 400 #define EVSEL__PRINT_IP                 (1<<0)
 401 #define EVSEL__PRINT_SYM                (1<<1)
 402 #define EVSEL__PRINT_DSO                (1<<2)
 403 #define EVSEL__PRINT_SYMOFFSET          (1<<3)
 404 #define EVSEL__PRINT_ONELINE            (1<<4)
 405 #define EVSEL__PRINT_SRCLINE            (1<<5)
 406 #define EVSEL__PRINT_UNKNOWN_AS_ADDR    (1<<6)
 407 #define EVSEL__PRINT_CALLCHAIN_ARROW    (1<<7)
 408 #define EVSEL__PRINT_SKIP_IGNORED       (1<<8)
 409
 410 struct callchain_cursor;
 411
 412 int sample__fprintf_callchain(struct perf_sample *sample, int left_alignment,
 413                               unsigned int print_opts,
 414                               struct callchain_cursor *cursor, FILE *fp);
 415
 416 int sample__fprintf_sym(struct perf_sample *sample, struct addr_location *al,
 417                         int left_alignment, unsigned int print_opts,
 418                         struct callchain_cursor *cursor, FILE *fp);
 419
 420 bool perf_evsel__fallback(struct perf_evsel *evsel, int err,
 421                           char *msg, size_t msgsize);
 422 int perf_evsel__open_strerror(struct perf_evsel *evsel, struct target *target,
 423                               int err, char *msg, size_t size);
 424
 425 static inline int perf_evsel__group_idx(struct perf_evsel *evsel)
 426 {
 427         return evsel->idx - evsel->leader->idx;
 428 }
 429
 430 #define for_each_group_member(_evsel, _leader)                                  \
 431 for ((_evsel) = list_entry((_leader)->node.next, struct perf_evsel, node);      \
 432      (_evsel) && (_evsel)->leader == (_leader);                                 \
 433      (_evsel) = list_entry((_evsel)->node.next, struct perf_evsel, node))
 434
 435 static inline bool perf_evsel__has_branch_callstack(const struct perf_evsel *evsel)
 436 {
 437         return evsel->attr.branch_sample_type & PERF_SAMPLE_BRANCH_CALL_STACK;
 438 }
 439
 440 typedef int (*attr__fprintf_f)(FILE *, const char *, const char *, void *);
 441
 442 int perf_event_attr__fprintf(FILE *fp, struct perf_event_attr *attr,
 443                              attr__fprintf_f attr__fprintf, void *priv);
 444
 445 char *perf_evsel__env_arch(struct perf_evsel *evsel);
 446 char *perf_evsel__env_cpuid(struct perf_evsel *evsel);
 447
 448 #endif /* __PERF_EVSEL_H */