LXR linux/tools/perf/util/evlist.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef __PERF_EVLIST_H
   3#define __PERF_EVLIST_H 1
   4
   5#include <linux/compiler.h>
   6#include <linux/kernel.h>
   7#include <linux/refcount.h>
   8#include <linux/list.h>
   9#include <api/fd/array.h>
  10#include <internal/evlist.h>
  11#include <internal/evsel.h>
  12#include "events_stats.h"
  13#include "evsel.h"
  14#include <pthread.h>
  15#include <signal.h>
  16#include <unistd.h>
  17
  18struct pollfd;
  19struct thread_map;
  20struct perf_cpu_map;
  21struct record_opts;
  22
  23/*
  24 * State machine of bkw_mmap_state:
  25 *
  26 *                     .________________(forbid)_____________.
  27 *                     |                                     V
  28 * NOTREADY --(0)--> RUNNING --(1)--> DATA_PENDING --(2)--> EMPTY
  29 *                     ^  ^              |   ^               |
  30 *                     |  |__(forbid)____/   |___(forbid)___/|
  31 *                     |                                     |
  32 *                      \_________________(3)_______________/
  33 *
  34 * NOTREADY     : Backward ring buffers are not ready
  35 * RUNNING      : Backward ring buffers are recording
  36 * DATA_PENDING : We are required to collect data from backward ring buffers
  37 * EMPTY        : We have collected data from backward ring buffers.
  38 *
  39 * (0): Setup backward ring buffer
  40 * (1): Pause ring buffers for reading
  41 * (2): Read from ring buffers
  42 * (3): Resume ring buffers for recording
  43 */
  44enum bkw_mmap_state {
  45        BKW_MMAP_NOTREADY,
  46        BKW_MMAP_RUNNING,
  47        BKW_MMAP_DATA_PENDING,
  48        BKW_MMAP_EMPTY,
  49};
  50
  51struct evlist {
  52        struct perf_evlist core;
  53        int              nr_groups;
  54        bool             enabled;
  55        int              id_pos;
  56        int              is_pos;
  57        u64              combined_sample_type;
  58        enum bkw_mmap_state bkw_mmap_state;
  59        struct {
  60                int     cork_fd;
  61                pid_t   pid;
  62        } workload;
  63        struct mmap *mmap;
  64        struct mmap *overwrite_mmap;
  65        struct evsel *selected;
  66        struct events_stats stats;
  67        struct perf_env *env;
  68        void (*trace_event_sample_raw)(struct evlist *evlist,
  69                                       union perf_event *event,
  70                                       struct perf_sample *sample);
  71        u64             first_sample_time;
  72        u64             last_sample_time;
  73        struct {
  74                pthread_t               th;
  75                volatile int            done;
  76        } thread;
  77};
  78
  79struct evsel_str_handler {
  80        const char *name;
  81        void       *handler;
  82};
  83
  84struct evlist *evlist__new(void);
  85struct evlist *perf_evlist__new_default(void);
  86struct evlist *perf_evlist__new_dummy(void);
  87void evlist__init(struct evlist *evlist, struct perf_cpu_map *cpus,
  88                  struct perf_thread_map *threads);
  89void evlist__exit(struct evlist *evlist);
  90void evlist__delete(struct evlist *evlist);
  91
  92void evlist__add(struct evlist *evlist, struct evsel *entry);
  93void evlist__remove(struct evlist *evlist, struct evsel *evsel);
  94
  95int __perf_evlist__add_default(struct evlist *evlist, bool precise);
  96
  97static inline int perf_evlist__add_default(struct evlist *evlist)
  98{
  99        return __perf_evlist__add_default(evlist, true);
 100}
 101
 102int __perf_evlist__add_default_attrs(struct evlist *evlist,
 103                                     struct perf_event_attr *attrs, size_t nr_attrs);
 104
 105#define perf_evlist__add_default_attrs(evlist, array) \
 106        __perf_evlist__add_default_attrs(evlist, array, ARRAY_SIZE(array))
 107
 108int perf_evlist__add_dummy(struct evlist *evlist);
 109
 110int perf_evlist__add_sb_event(struct evlist **evlist,
 111                              struct perf_event_attr *attr,
 112                              perf_evsel__sb_cb_t cb,
 113                              void *data);
 114int perf_evlist__start_sb_thread(struct evlist *evlist,
 115                                 struct target *target);
 116void perf_evlist__stop_sb_thread(struct evlist *evlist);
 117
 118int perf_evlist__add_newtp(struct evlist *evlist,
 119                           const char *sys, const char *name, void *handler);
 120
 121void __perf_evlist__set_sample_bit(struct evlist *evlist,
 122                                   enum perf_event_sample_format bit);
 123void __perf_evlist__reset_sample_bit(struct evlist *evlist,
 124                                     enum perf_event_sample_format bit);
 125
 126#define perf_evlist__set_sample_bit(evlist, bit) \
 127        __perf_evlist__set_sample_bit(evlist, PERF_SAMPLE_##bit)
 128
 129#define perf_evlist__reset_sample_bit(evlist, bit) \
 130        __perf_evlist__reset_sample_bit(evlist, PERF_SAMPLE_##bit)
 131
 132int perf_evlist__set_tp_filter(struct evlist *evlist, const char *filter);
 133int perf_evlist__set_tp_filter_pid(struct evlist *evlist, pid_t pid);
 134int perf_evlist__set_tp_filter_pids(struct evlist *evlist, size_t npids, pid_t *pids);
 135
 136struct evsel *
 137perf_evlist__find_tracepoint_by_id(struct evlist *evlist, int id);
 138
 139struct evsel *
 140perf_evlist__find_tracepoint_by_name(struct evlist *evlist,
 141                                     const char *name);
 142
 143int evlist__add_pollfd(struct evlist *evlist, int fd);
 144int evlist__filter_pollfd(struct evlist *evlist, short revents_and_mask);
 145
 146int evlist__poll(struct evlist *evlist, int timeout);
 147
 148struct evsel *perf_evlist__id2evsel(struct evlist *evlist, u64 id);
 149struct evsel *perf_evlist__id2evsel_strict(struct evlist *evlist,
 150                                                u64 id);
 151
 152struct perf_sample_id *perf_evlist__id2sid(struct evlist *evlist, u64 id);
 153
 154void perf_evlist__toggle_bkw_mmap(struct evlist *evlist, enum bkw_mmap_state state);
 155
 156void evlist__mmap_consume(struct evlist *evlist, int idx);
 157
 158int evlist__open(struct evlist *evlist);
 159void evlist__close(struct evlist *evlist);
 160
 161struct callchain_param;
 162
 163void perf_evlist__set_id_pos(struct evlist *evlist);
 164bool perf_can_sample_identifier(void);
 165bool perf_can_record_switch_events(void);
 166bool perf_can_record_cpu_wide(void);
 167void perf_evlist__config(struct evlist *evlist, struct record_opts *opts,
 168                         struct callchain_param *callchain);
 169int record_opts__config(struct record_opts *opts);
 170
 171int perf_evlist__prepare_workload(struct evlist *evlist,
 172                                  struct target *target,
 173                                  const char *argv[], bool pipe_output,
 174                                  void (*exec_error)(int signo, siginfo_t *info,
 175                                                     void *ucontext));
 176int perf_evlist__start_workload(struct evlist *evlist);
 177
 178struct option;
 179
 180int __perf_evlist__parse_mmap_pages(unsigned int *mmap_pages, const char *str);
 181int perf_evlist__parse_mmap_pages(const struct option *opt,
 182                                  const char *str,
 183                                  int unset);
 184
 185unsigned long perf_event_mlock_kb_in_pages(void);
 186
 187int evlist__mmap_ex(struct evlist *evlist, unsigned int pages,
 188                         unsigned int auxtrace_pages,
 189                         bool auxtrace_overwrite, int nr_cblocks,
 190                         int affinity, int flush, int comp_level);
 191int evlist__mmap(struct evlist *evlist, unsigned int pages);
 192void evlist__munmap(struct evlist *evlist);
 193
 194size_t evlist__mmap_size(unsigned long pages);
 195
 196void evlist__disable(struct evlist *evlist);
 197void evlist__enable(struct evlist *evlist);
 198void perf_evlist__toggle_enable(struct evlist *evlist);
 199
 200int perf_evlist__enable_event_idx(struct evlist *evlist,
 201                                  struct evsel *evsel, int idx);
 202
 203void perf_evlist__set_selected(struct evlist *evlist,
 204                               struct evsel *evsel);
 205
 206int perf_evlist__create_maps(struct evlist *evlist, struct target *target);
 207int perf_evlist__apply_filters(struct evlist *evlist, struct evsel **err_evsel);
 208
 209void __perf_evlist__set_leader(struct list_head *list);
 210void perf_evlist__set_leader(struct evlist *evlist);
 211
 212u64 __perf_evlist__combined_sample_type(struct evlist *evlist);
 213u64 perf_evlist__combined_sample_type(struct evlist *evlist);
 214u64 perf_evlist__combined_branch_type(struct evlist *evlist);
 215bool perf_evlist__sample_id_all(struct evlist *evlist);
 216u16 perf_evlist__id_hdr_size(struct evlist *evlist);
 217
 218int perf_evlist__parse_sample(struct evlist *evlist, union perf_event *event,
 219                              struct perf_sample *sample);
 220
 221int perf_evlist__parse_sample_timestamp(struct evlist *evlist,
 222                                        union perf_event *event,
 223                                        u64 *timestamp);
 224
 225bool perf_evlist__valid_sample_type(struct evlist *evlist);
 226bool perf_evlist__valid_sample_id_all(struct evlist *evlist);
 227bool perf_evlist__valid_read_format(struct evlist *evlist);
 228
 229void perf_evlist__splice_list_tail(struct evlist *evlist,
 230                                   struct list_head *list);
 231
 232static inline bool perf_evlist__empty(struct evlist *evlist)
 233{
 234        return list_empty(&evlist->core.entries);
 235}
 236
 237static inline struct evsel *evlist__first(struct evlist *evlist)
 238{
 239        struct perf_evsel *evsel = perf_evlist__first(&evlist->core);
 240
 241        return container_of(evsel, struct evsel, core);
 242}
 243
 244static inline struct evsel *evlist__last(struct evlist *evlist)
 245{
 246        struct perf_evsel *evsel = perf_evlist__last(&evlist->core);
 247
 248        return container_of(evsel, struct evsel, core);
 249}
 250
 251int perf_evlist__strerror_open(struct evlist *evlist, int err, char *buf, size_t size);
 252int perf_evlist__strerror_mmap(struct evlist *evlist, int err, char *buf, size_t size);
 253
 254bool perf_evlist__can_select_event(struct evlist *evlist, const char *str);
 255void perf_evlist__to_front(struct evlist *evlist,
 256                           struct evsel *move_evsel);
 257
 258/**
 259 * __evlist__for_each_entry - iterate thru all the evsels
 260 * @list: list_head instance to iterate
 261 * @evsel: struct evsel iterator
 262 */
 263#define __evlist__for_each_entry(list, evsel) \
 264        list_for_each_entry(evsel, list, core.node)
 265
 266/**
 267 * evlist__for_each_entry - iterate thru all the evsels
 268 * @evlist: evlist instance to iterate
 269 * @evsel: struct evsel iterator
 270 */
 271#define evlist__for_each_entry(evlist, evsel) \
 272        __evlist__for_each_entry(&(evlist)->core.entries, evsel)
 273
 274/**
 275 * __evlist__for_each_entry_continue - continue iteration thru all the evsels
 276 * @list: list_head instance to iterate
 277 * @evsel: struct evsel iterator
 278 */
 279#define __evlist__for_each_entry_continue(list, evsel) \
 280        list_for_each_entry_continue(evsel, list, core.node)
 281
 282/**
 283 * evlist__for_each_entry_continue - continue iteration thru all the evsels
 284 * @evlist: evlist instance to iterate
 285 * @evsel: struct evsel iterator
 286 */
 287#define evlist__for_each_entry_continue(evlist, evsel) \
 288        __evlist__for_each_entry_continue(&(evlist)->core.entries, evsel)
 289
 290/**
 291 * __evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
 292 * @list: list_head instance to iterate
 293 * @evsel: struct evsel iterator
 294 */
 295#define __evlist__for_each_entry_reverse(list, evsel) \
 296        list_for_each_entry_reverse(evsel, list, core.node)
 297
 298/**
 299 * evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
 300 * @evlist: evlist instance to iterate
 301 * @evsel: struct evsel iterator
 302 */
 303#define evlist__for_each_entry_reverse(evlist, evsel) \
 304        __evlist__for_each_entry_reverse(&(evlist)->core.entries, evsel)
 305
 306/**
 307 * __evlist__for_each_entry_safe - safely iterate thru all the evsels
 308 * @list: list_head instance to iterate
 309 * @tmp: struct evsel temp iterator
 310 * @evsel: struct evsel iterator
 311 */
 312#define __evlist__for_each_entry_safe(list, tmp, evsel) \
 313        list_for_each_entry_safe(evsel, tmp, list, core.node)
 314
 315/**
 316 * evlist__for_each_entry_safe - safely iterate thru all the evsels
 317 * @evlist: evlist instance to iterate
 318 * @evsel: struct evsel iterator
 319 * @tmp: struct evsel temp iterator
 320 */
 321#define evlist__for_each_entry_safe(evlist, tmp, evsel) \
 322        __evlist__for_each_entry_safe(&(evlist)->core.entries, tmp, evsel)
 323
 324void perf_evlist__set_tracking_event(struct evlist *evlist,
 325                                     struct evsel *tracking_evsel);
 326
 327struct evsel *
 328perf_evlist__find_evsel_by_str(struct evlist *evlist, const char *str);
 329
 330struct evsel *perf_evlist__event2evsel(struct evlist *evlist,
 331                                            union perf_event *event);
 332
 333bool perf_evlist__exclude_kernel(struct evlist *evlist);
 334
 335void perf_evlist__force_leader(struct evlist *evlist);
 336
 337struct evsel *perf_evlist__reset_weak_group(struct evlist *evlist,
 338                                                 struct evsel *evsel);
 339#endif /* __PERF_EVLIST_H */
 340