tools/perf/util/evsel.h

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