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 <sys/types.h>
   8 #include <linux/perf_event.h>
   9 #include <linux/types.h>
  10 #include <internal/evsel.h>
  11 #include <perf/evsel.h>
  12 #include "symbol_conf.h"
  13 #include <internal/cpumap.h>
  14
  15 struct bpf_object;
  16 struct cgroup;
  17 struct perf_counts;
  18 struct perf_stat_evsel;
  19 union perf_event;
  20
  21 typedef int (evsel__sb_cb_t)(union perf_event *event, void *data);
  22
  23 enum perf_tool_event {
  24         PERF_TOOL_NONE          = 0,
  25         PERF_TOOL_DURATION_TIME = 1,
  26 };
  27
  28 /** struct evsel - event selector
  29  *
  30  * @evlist - evlist this evsel is in, if it is in one.
  31  * @core - libperf evsel object
  32  * @name - Can be set to retain the original event name passed by the user,
  33  *         so that when showing results in tools such as 'perf stat', we
  34  *         show the name used, not some alias.
  35  * @id_pos: the position of the event id (PERF_SAMPLE_ID or
  36  *          PERF_SAMPLE_IDENTIFIER) in a sample event i.e. in the array of
  37  *          struct perf_record_sample
  38  * @is_pos: the position (counting backwards) of the event id (PERF_SAMPLE_ID or
  39  *          PERF_SAMPLE_IDENTIFIER) in a non-sample event i.e. if sample_id_all
  40  *          is used there is an id sample appended to non-sample events
  41  * @priv:   And what is in its containing unnamed union are tool specific
  42  */
  43 struct evsel {
  44         struct perf_evsel       core;
  45         struct evlist           *evlist;
  46         off_t                   id_offset;
  47         int                     idx;
  48         int                     id_pos;
  49         int                     is_pos;
  50         unsigned int            sample_size;
  51
  52         /*
  53          * These fields can be set in the parse-events code or similar.
  54          * Please check evsel__clone() to copy them properly so that
  55          * they can be released properly.
  56          */
  57         struct {
  58                 char                    *name;
  59                 char                    *group_name;
  60                 const char              *pmu_name;
  61                 struct tep_event        *tp_format;
  62                 char                    *filter;
  63                 unsigned long           max_events;
  64                 double                  scale;
  65                 const char              *unit;
  66                 struct cgroup           *cgrp;
  67                 enum perf_tool_event    tool_event;
  68                 /* parse modifier helper */
  69                 int                     exclude_GH;
  70                 int                     sample_read;
  71                 bool                    snapshot;
  72                 bool                    per_pkg;
  73                 bool                    percore;
  74                 bool                    precise_max;
  75                 bool                    use_uncore_alias;
  76                 bool                    is_libpfm_event;
  77                 bool                    auto_merge_stats;
  78                 bool                    collect_stat;
  79                 bool                    weak_group;
  80                 int                     bpf_fd;
  81                 struct bpf_object       *bpf_obj;
  82         };
  83
  84         /*
  85          * metric fields are similar, but needs more care as they can have
  86          * references to other metric (evsel).
  87          */
  88         const char *            metric_expr;
  89         const char *            metric_name;
  90         struct evsel            **metric_events;
  91         struct evsel            *metric_leader;
  92
  93         void                    *handler;
  94         struct perf_counts      *counts;
  95         struct perf_counts      *prev_raw_counts;
  96         unsigned long           nr_events_printed;
  97         struct perf_stat_evsel  *stats;
  98         void                    *priv;
  99         u64                     db_id;
 100         bool                    uniquified_name;
 101         bool                    supported;
 102         bool                    needs_swap;
 103         bool                    disabled;
 104         bool                    no_aux_samples;
 105         bool                    immediate;
 106         bool                    tracking;
 107         bool                    ignore_missing_thread;
 108         bool                    forced_leader;
 109         bool                    cmdline_group_boundary;
 110         bool                    merged_stat;
 111         bool                    reset_group;
 112         bool                    errored;
 113         unsigned long           *per_pkg_mask;
 114         struct evsel            *leader;
 115         struct list_head        config_terms;
 116         int                     err;
 117         int                     cpu_iter;
 118         struct {
 119                 evsel__sb_cb_t  *cb;
 120                 void            *data;
 121         } side_band;
 122         /*
 123          * For reporting purposes, an evsel sample can have a callchain
 124          * synthesized from AUX area data. Keep track of synthesized sample
 125          * types here. Note, the recorded sample_type cannot be changed because
 126          * it is needed to continue to parse events.
 127          * See also evsel__has_callchain().
 128          */
 129         __u64                   synth_sample_type;
 130 };
 131
 132 struct perf_missing_features {
 133         bool sample_id_all;
 134         bool exclude_guest;
 135         bool mmap2;
 136         bool cloexec;
 137         bool clockid;
 138         bool clockid_wrong;
 139         bool lbr_flags;
 140         bool write_backward;
 141         bool group_read;
 142         bool ksymbol;
 143         bool bpf;
 144         bool aux_output;
 145         bool branch_hw_idx;
 146         bool cgroup;
 147         bool data_page_size;
 148 };
 149
 150 extern struct perf_missing_features perf_missing_features;
 151
 152 struct perf_cpu_map;
 153 struct target;
 154 struct thread_map;
 155 struct record_opts;
 156
 157 static inline struct perf_cpu_map *evsel__cpus(struct evsel *evsel)
 158 {
 159         return perf_evsel__cpus(&evsel->core);
 160 }
 161
 162 static inline int evsel__nr_cpus(struct evsel *evsel)
 163 {
 164         return 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 evsel__compute_deltas(struct evsel *evsel, int cpu, int thread,
 171                            struct perf_counts_values *count);
 172
 173 int evsel__object_config(size_t object_size,
 174                          int (*init)(struct evsel *evsel),
 175                          void (*fini)(struct evsel *evsel));
 176
 177 struct perf_pmu *evsel__find_pmu(struct evsel *evsel);
 178 bool evsel__is_aux_event(struct evsel *evsel);
 179
 180 struct evsel *evsel__new_idx(struct perf_event_attr *attr, int idx);
 181
 182 static inline struct evsel *evsel__new(struct perf_event_attr *attr)
 183 {
 184         return evsel__new_idx(attr, 0);
 185 }
 186
 187 struct evsel *evsel__clone(struct evsel *orig);
 188 struct evsel *evsel__newtp_idx(const char *sys, const char *name, int idx);
 189
 190 /*
 191  * Returns pointer with encoded error via <linux/err.h> interface.
 192  */
 193 static inline struct evsel *evsel__newtp(const char *sys, const char *name)
 194 {
 195         return evsel__newtp_idx(sys, name, 0);
 196 }
 197
 198 struct evsel *evsel__new_cycles(bool precise);
 199
 200 struct tep_event *event_format__new(const char *sys, const char *name);
 201
 202 void evsel__init(struct evsel *evsel, struct perf_event_attr *attr, int idx);
 203 void evsel__exit(struct evsel *evsel);
 204 void evsel__delete(struct evsel *evsel);
 205
 206 struct callchain_param;
 207
 208 void evsel__config(struct evsel *evsel, struct record_opts *opts,
 209                    struct callchain_param *callchain);
 210 void evsel__config_callchain(struct evsel *evsel, struct record_opts *opts,
 211                              struct callchain_param *callchain);
 212
 213 int __evsel__sample_size(u64 sample_type);
 214 void evsel__calc_id_pos(struct evsel *evsel);
 215
 216 bool evsel__is_cache_op_valid(u8 type, u8 op);
 217
 218 #define EVSEL__MAX_ALIASES 8
 219
 220 extern const char *evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX][EVSEL__MAX_ALIASES];
 221 extern const char *evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX][EVSEL__MAX_ALIASES];
 222 extern const char *evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX][EVSEL__MAX_ALIASES];
 223 extern const char *evsel__hw_names[PERF_COUNT_HW_MAX];
 224 extern const char *evsel__sw_names[PERF_COUNT_SW_MAX];
 225 int __evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result, char *bf, size_t size);
 226 const char *evsel__name(struct evsel *evsel);
 227
 228 const char *evsel__group_name(struct evsel *evsel);
 229 int evsel__group_desc(struct evsel *evsel, char *buf, size_t size);
 230
 231 void __evsel__set_sample_bit(struct evsel *evsel, enum perf_event_sample_format bit);
 232 void __evsel__reset_sample_bit(struct evsel *evsel, enum perf_event_sample_format bit);
 233
 234 #define evsel__set_sample_bit(evsel, bit) \
 235         __evsel__set_sample_bit(evsel, PERF_SAMPLE_##bit)
 236
 237 #define evsel__reset_sample_bit(evsel, bit) \
 238         __evsel__reset_sample_bit(evsel, PERF_SAMPLE_##bit)
 239
 240 void evsel__set_sample_id(struct evsel *evsel, bool use_sample_identifier);
 241
 242 int evsel__set_filter(struct evsel *evsel, const char *filter);
 243 int evsel__append_tp_filter(struct evsel *evsel, const char *filter);
 244 int evsel__append_addr_filter(struct evsel *evsel, const char *filter);
 245 int evsel__enable_cpu(struct evsel *evsel, int cpu);
 246 int evsel__enable(struct evsel *evsel);
 247 int evsel__disable(struct evsel *evsel);
 248 int evsel__disable_cpu(struct evsel *evsel, int cpu);
 249
 250 int evsel__open_per_cpu(struct evsel *evsel, struct perf_cpu_map *cpus, int cpu);
 251 int evsel__open_per_thread(struct evsel *evsel, struct perf_thread_map *threads);
 252 int evsel__open(struct evsel *evsel, struct perf_cpu_map *cpus,
 253                 struct perf_thread_map *threads);
 254 void evsel__close(struct evsel *evsel);
 255
 256 struct perf_sample;
 257
 258 void *evsel__rawptr(struct evsel *evsel, struct perf_sample *sample, const char *name);
 259 u64 evsel__intval(struct evsel *evsel, struct perf_sample *sample, const char *name);
 260
 261 static inline char *evsel__strval(struct evsel *evsel, struct perf_sample *sample, const char *name)
 262 {
 263         return evsel__rawptr(evsel, sample, name);
 264 }
 265
 266 struct tep_format_field;
 267
 268 u64 format_field__intval(struct tep_format_field *field, struct perf_sample *sample, bool needs_swap);
 269
 270 struct tep_format_field *evsel__field(struct evsel *evsel, const char *name);
 271
 272 #define evsel__match(evsel, t, c)               \
 273         (evsel->core.attr.type == PERF_TYPE_##t &&      \
 274          evsel->core.attr.config == PERF_COUNT_##c)
 275
 276 static inline bool evsel__match2(struct evsel *e1, struct evsel *e2)
 277 {
 278         return (e1->core.attr.type == e2->core.attr.type) &&
 279                (e1->core.attr.config == e2->core.attr.config);
 280 }
 281
 282 int evsel__read_counter(struct evsel *evsel, int cpu, int thread);
 283
 284 int __evsel__read_on_cpu(struct evsel *evsel, int cpu, int thread, bool scale);
 285
 286 /**
 287  * evsel__read_on_cpu - Read out the results on a CPU and thread
 288  *
 289  * @evsel - event selector to read value
 290  * @cpu - CPU of interest
 291  * @thread - thread of interest
 292  */
 293 static inline int evsel__read_on_cpu(struct evsel *evsel, int cpu, int thread)
 294 {
 295         return __evsel__read_on_cpu(evsel, cpu, thread, false);
 296 }
 297
 298 /**
 299  * evsel__read_on_cpu_scaled - Read out the results on a CPU and thread, scaled
 300  *
 301  * @evsel - event selector to read value
 302  * @cpu - CPU of interest
 303  * @thread - thread of interest
 304  */
 305 static inline int evsel__read_on_cpu_scaled(struct evsel *evsel, int cpu, int thread)
 306 {
 307         return __evsel__read_on_cpu(evsel, cpu, thread, true);
 308 }
 309
 310 int evsel__parse_sample(struct evsel *evsel, union perf_event *event,
 311                         struct perf_sample *sample);
 312
 313 int evsel__parse_sample_timestamp(struct evsel *evsel, union perf_event *event,
 314                                   u64 *timestamp);
 315
 316 static inline struct evsel *evsel__next(struct evsel *evsel)
 317 {
 318         return list_entry(evsel->core.node.next, struct evsel, core.node);
 319 }
 320
 321 static inline struct evsel *evsel__prev(struct evsel *evsel)
 322 {
 323         return list_entry(evsel->core.node.prev, struct evsel, core.node);
 324 }
 325
 326 /**
 327  * evsel__is_group_leader - Return whether given evsel is a leader event
 328  *
 329  * @evsel - evsel selector to be tested
 330  *
 331  * Return %true if @evsel is a group leader or a stand-alone event
 332  */
 333 static inline bool evsel__is_group_leader(const struct evsel *evsel)
 334 {
 335         return evsel->leader == evsel;
 336 }
 337
 338 /**
 339  * evsel__is_group_event - Return whether given evsel is a group event
 340  *
 341  * @evsel - evsel selector to be tested
 342  *
 343  * Return %true iff event group view is enabled and @evsel is a actual group
 344  * leader which has other members in the group
 345  */
 346 static inline bool evsel__is_group_event(struct evsel *evsel)
 347 {
 348         if (!symbol_conf.event_group)
 349                 return false;
 350
 351         return evsel__is_group_leader(evsel) && evsel->core.nr_members > 1;
 352 }
 353
 354 bool evsel__is_function_event(struct evsel *evsel);
 355
 356 static inline bool evsel__is_bpf_output(struct evsel *evsel)
 357 {
 358         return evsel__match(evsel, SOFTWARE, SW_BPF_OUTPUT);
 359 }
 360
 361 static inline bool evsel__is_clock(struct evsel *evsel)
 362 {
 363         return evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
 364                evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK);
 365 }
 366
 367 bool evsel__fallback(struct evsel *evsel, int err, char *msg, size_t msgsize);
 368 int evsel__open_strerror(struct evsel *evsel, struct target *target,
 369                          int err, char *msg, size_t size);
 370
 371 static inline int evsel__group_idx(struct evsel *evsel)
 372 {
 373         return evsel->idx - evsel->leader->idx;
 374 }
 375
 376 /* Iterates group WITHOUT the leader. */
 377 #define for_each_group_member(_evsel, _leader)                                  \
 378 for ((_evsel) = list_entry((_leader)->core.node.next, struct evsel, core.node); \
 379      (_evsel) && (_evsel)->leader == (_leader);                                 \
 380      (_evsel) = list_entry((_evsel)->core.node.next, struct evsel, core.node))
 381
 382 /* Iterates group WITH the leader. */
 383 #define for_each_group_evsel(_evsel, _leader)                                   \
 384 for ((_evsel) = _leader;                                                        \
 385      (_evsel) && (_evsel)->leader == (_leader);                                 \
 386      (_evsel) = list_entry((_evsel)->core.node.next, struct evsel, core.node))
 387
 388 static inline bool evsel__has_branch_callstack(const struct evsel *evsel)
 389 {
 390         return evsel->core.attr.branch_sample_type & PERF_SAMPLE_BRANCH_CALL_STACK;
 391 }
 392
 393 static inline bool evsel__has_branch_hw_idx(const struct evsel *evsel)
 394 {
 395         return evsel->core.attr.branch_sample_type & PERF_SAMPLE_BRANCH_HW_INDEX;
 396 }
 397
 398 static inline bool evsel__has_callchain(const struct evsel *evsel)
 399 {
 400         /*
 401          * For reporting purposes, an evsel sample can have a recorded callchain
 402          * or a callchain synthesized from AUX area data.
 403          */
 404         return evsel->core.attr.sample_type & PERF_SAMPLE_CALLCHAIN ||
 405                evsel->synth_sample_type & PERF_SAMPLE_CALLCHAIN;
 406 }
 407
 408 static inline bool evsel__has_br_stack(const struct evsel *evsel)
 409 {
 410         /*
 411          * For reporting purposes, an evsel sample can have a recorded branch
 412          * stack or a branch stack synthesized from AUX area data.
 413          */
 414         return evsel->core.attr.sample_type & PERF_SAMPLE_BRANCH_STACK ||
 415                evsel->synth_sample_type & PERF_SAMPLE_BRANCH_STACK;
 416 }
 417
 418 static inline bool evsel__is_dummy_event(struct evsel *evsel)
 419 {
 420         return (evsel->core.attr.type == PERF_TYPE_SOFTWARE) &&
 421                (evsel->core.attr.config == PERF_COUNT_SW_DUMMY);
 422 }
 423
 424 struct perf_env *evsel__env(struct evsel *evsel);
 425
 426 int evsel__store_ids(struct evsel *evsel, struct evlist *evlist);
 427 #endif /* __PERF_EVSEL_H */