1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __PERF_EVLIST_H
3 #define __PERF_EVLIST_H 1
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"
24 * State machine of bkw_mmap_state:
26 * .________________(forbid)_____________.
28 * NOTREADY --(0)--> RUNNING --(1)--> DATA_PENDING --(2)--> EMPTY
30 * | |__(forbid)____/ |___(forbid)___/|
32 * \_________________(3)_______________/
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.
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
47 BKW_MMAP_DATA_PENDING,
52 struct perf_evlist core;
56 u64 combined_sample_type;
57 enum bkw_mmap_state bkw_mmap_state;
63 struct mmap *overwrite_mmap;
64 struct evsel *selected;
65 struct events_stats stats;
67 const char *hybrid_pmu_name;
68 void (*trace_event_sample_raw)(struct evlist *evlist,
69 union perf_event *event,
70 struct perf_sample *sample);
71 u64 first_sample_time;
78 int fd; /* control file descriptor */
79 int ack; /* ack file descriptor for control commands */
80 int pos; /* index at evlist core object to check signals */
84 struct evsel_str_handler {
89 struct evlist *evlist__new(void);
90 struct evlist *evlist__new_default(void);
91 struct evlist *evlist__new_dummy(void);
92 void evlist__init(struct evlist *evlist, struct perf_cpu_map *cpus,
93 struct perf_thread_map *threads);
94 void evlist__exit(struct evlist *evlist);
95 void evlist__delete(struct evlist *evlist);
97 void evlist__add(struct evlist *evlist, struct evsel *entry);
98 void evlist__remove(struct evlist *evlist, struct evsel *evsel);
100 int __evlist__add_default(struct evlist *evlist, bool precise);
102 static inline int evlist__add_default(struct evlist *evlist)
104 return __evlist__add_default(evlist, true);
107 int evlist__add_attrs(struct evlist *evlist, struct perf_event_attr *attrs, size_t nr_attrs);
109 int __evlist__add_default_attrs(struct evlist *evlist,
110 struct perf_event_attr *attrs, size_t nr_attrs);
112 int arch_evlist__add_default_attrs(struct evlist *evlist,
113 struct perf_event_attr *attrs,
116 #define evlist__add_default_attrs(evlist, array) \
117 arch_evlist__add_default_attrs(evlist, array, ARRAY_SIZE(array))
119 struct evsel *arch_evlist__leader(struct list_head *list);
121 int evlist__add_dummy(struct evlist *evlist);
122 struct evsel *evlist__add_aux_dummy(struct evlist *evlist, bool system_wide);
123 static inline struct evsel *evlist__add_dummy_on_all_cpus(struct evlist *evlist)
125 return evlist__add_aux_dummy(evlist, true);
128 int evlist__add_sb_event(struct evlist *evlist, struct perf_event_attr *attr,
129 evsel__sb_cb_t cb, void *data);
130 void evlist__set_cb(struct evlist *evlist, evsel__sb_cb_t cb, void *data);
131 int evlist__start_sb_thread(struct evlist *evlist, struct target *target);
132 void evlist__stop_sb_thread(struct evlist *evlist);
134 int evlist__add_newtp(struct evlist *evlist, const char *sys, const char *name, void *handler);
136 int __evlist__set_tracepoints_handlers(struct evlist *evlist,
137 const struct evsel_str_handler *assocs,
140 #define evlist__set_tracepoints_handlers(evlist, array) \
141 __evlist__set_tracepoints_handlers(evlist, array, ARRAY_SIZE(array))
143 int evlist__set_tp_filter(struct evlist *evlist, const char *filter);
144 int evlist__set_tp_filter_pid(struct evlist *evlist, pid_t pid);
145 int evlist__set_tp_filter_pids(struct evlist *evlist, size_t npids, pid_t *pids);
147 int evlist__append_tp_filter(struct evlist *evlist, const char *filter);
149 int evlist__append_tp_filter_pid(struct evlist *evlist, pid_t pid);
150 int evlist__append_tp_filter_pids(struct evlist *evlist, size_t npids, pid_t *pids);
152 struct evsel *evlist__find_tracepoint_by_id(struct evlist *evlist, int id);
153 struct evsel *evlist__find_tracepoint_by_name(struct evlist *evlist, const char *name);
155 int evlist__add_pollfd(struct evlist *evlist, int fd);
156 int evlist__filter_pollfd(struct evlist *evlist, short revents_and_mask);
158 #ifdef HAVE_EVENTFD_SUPPORT
159 int evlist__add_wakeup_eventfd(struct evlist *evlist, int fd);
162 int evlist__poll(struct evlist *evlist, int timeout);
164 struct evsel *evlist__id2evsel(struct evlist *evlist, u64 id);
165 struct evsel *evlist__id2evsel_strict(struct evlist *evlist, u64 id);
167 struct perf_sample_id *evlist__id2sid(struct evlist *evlist, u64 id);
169 void evlist__toggle_bkw_mmap(struct evlist *evlist, enum bkw_mmap_state state);
171 void evlist__mmap_consume(struct evlist *evlist, int idx);
173 int evlist__open(struct evlist *evlist);
174 void evlist__close(struct evlist *evlist);
176 struct callchain_param;
178 void evlist__set_id_pos(struct evlist *evlist);
179 void evlist__config(struct evlist *evlist, struct record_opts *opts, struct callchain_param *callchain);
180 int record_opts__config(struct record_opts *opts);
182 int evlist__prepare_workload(struct evlist *evlist, struct target *target,
183 const char *argv[], bool pipe_output,
184 void (*exec_error)(int signo, siginfo_t *info, void *ucontext));
185 int evlist__start_workload(struct evlist *evlist);
189 int __evlist__parse_mmap_pages(unsigned int *mmap_pages, const char *str);
190 int evlist__parse_mmap_pages(const struct option *opt, const char *str, int unset);
192 unsigned long perf_event_mlock_kb_in_pages(void);
194 int evlist__mmap_ex(struct evlist *evlist, unsigned int pages,
195 unsigned int auxtrace_pages,
196 bool auxtrace_overwrite, int nr_cblocks,
197 int affinity, int flush, int comp_level);
198 int evlist__mmap(struct evlist *evlist, unsigned int pages);
199 void evlist__munmap(struct evlist *evlist);
201 size_t evlist__mmap_size(unsigned long pages);
203 void evlist__disable(struct evlist *evlist);
204 void evlist__enable(struct evlist *evlist);
205 void evlist__toggle_enable(struct evlist *evlist);
206 void evlist__disable_evsel(struct evlist *evlist, char *evsel_name);
207 void evlist__enable_evsel(struct evlist *evlist, char *evsel_name);
209 void evlist__set_selected(struct evlist *evlist, struct evsel *evsel);
211 int evlist__create_maps(struct evlist *evlist, struct target *target);
212 int evlist__apply_filters(struct evlist *evlist, struct evsel **err_evsel);
214 void evlist__set_leader(struct evlist *evlist);
216 u64 __evlist__combined_sample_type(struct evlist *evlist);
217 u64 evlist__combined_sample_type(struct evlist *evlist);
218 u64 evlist__combined_branch_type(struct evlist *evlist);
219 bool evlist__sample_id_all(struct evlist *evlist);
220 u16 evlist__id_hdr_size(struct evlist *evlist);
222 int evlist__parse_sample(struct evlist *evlist, union perf_event *event, struct perf_sample *sample);
223 int evlist__parse_sample_timestamp(struct evlist *evlist, union perf_event *event, u64 *timestamp);
225 bool evlist__valid_sample_type(struct evlist *evlist);
226 bool evlist__valid_sample_id_all(struct evlist *evlist);
227 bool evlist__valid_read_format(struct evlist *evlist);
229 void evlist__splice_list_tail(struct evlist *evlist, struct list_head *list);
231 static inline bool evlist__empty(struct evlist *evlist)
233 return list_empty(&evlist->core.entries);
236 static inline struct evsel *evlist__first(struct evlist *evlist)
238 struct perf_evsel *evsel = perf_evlist__first(&evlist->core);
240 return container_of(evsel, struct evsel, core);
243 static inline struct evsel *evlist__last(struct evlist *evlist)
245 struct perf_evsel *evsel = perf_evlist__last(&evlist->core);
247 return container_of(evsel, struct evsel, core);
250 int evlist__strerror_open(struct evlist *evlist, int err, char *buf, size_t size);
251 int evlist__strerror_mmap(struct evlist *evlist, int err, char *buf, size_t size);
253 bool evlist__can_select_event(struct evlist *evlist, const char *str);
254 void evlist__to_front(struct evlist *evlist, struct evsel *move_evsel);
257 * __evlist__for_each_entry - iterate thru all the evsels
258 * @list: list_head instance to iterate
259 * @evsel: struct evsel iterator
261 #define __evlist__for_each_entry(list, evsel) \
262 list_for_each_entry(evsel, list, core.node)
265 * evlist__for_each_entry - iterate thru all the evsels
266 * @evlist: evlist instance to iterate
267 * @evsel: struct evsel iterator
269 #define evlist__for_each_entry(evlist, evsel) \
270 __evlist__for_each_entry(&(evlist)->core.entries, evsel)
273 * __evlist__for_each_entry_continue - continue iteration thru all the evsels
274 * @list: list_head instance to iterate
275 * @evsel: struct evsel iterator
277 #define __evlist__for_each_entry_continue(list, evsel) \
278 list_for_each_entry_continue(evsel, list, core.node)
281 * evlist__for_each_entry_continue - continue iteration thru all the evsels
282 * @evlist: evlist instance to iterate
283 * @evsel: struct evsel iterator
285 #define evlist__for_each_entry_continue(evlist, evsel) \
286 __evlist__for_each_entry_continue(&(evlist)->core.entries, evsel)
289 * __evlist__for_each_entry_from - continue iteration from @evsel (included)
290 * @list: list_head instance to iterate
291 * @evsel: struct evsel iterator
293 #define __evlist__for_each_entry_from(list, evsel) \
294 list_for_each_entry_from(evsel, list, core.node)
297 * evlist__for_each_entry_from - continue iteration from @evsel (included)
298 * @evlist: evlist instance to iterate
299 * @evsel: struct evsel iterator
301 #define evlist__for_each_entry_from(evlist, evsel) \
302 __evlist__for_each_entry_from(&(evlist)->core.entries, evsel)
305 * __evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
306 * @list: list_head instance to iterate
307 * @evsel: struct evsel iterator
309 #define __evlist__for_each_entry_reverse(list, evsel) \
310 list_for_each_entry_reverse(evsel, list, core.node)
313 * evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
314 * @evlist: evlist instance to iterate
315 * @evsel: struct evsel iterator
317 #define evlist__for_each_entry_reverse(evlist, evsel) \
318 __evlist__for_each_entry_reverse(&(evlist)->core.entries, evsel)
321 * __evlist__for_each_entry_safe - safely iterate thru all the evsels
322 * @list: list_head instance to iterate
323 * @tmp: struct evsel temp iterator
324 * @evsel: struct evsel iterator
326 #define __evlist__for_each_entry_safe(list, tmp, evsel) \
327 list_for_each_entry_safe(evsel, tmp, list, core.node)
330 * evlist__for_each_entry_safe - safely iterate thru all the evsels
331 * @evlist: evlist instance to iterate
332 * @evsel: struct evsel iterator
333 * @tmp: struct evsel temp iterator
335 #define evlist__for_each_entry_safe(evlist, tmp, evsel) \
336 __evlist__for_each_entry_safe(&(evlist)->core.entries, tmp, evsel)
338 /** Iterator state for evlist__for_each_cpu */
339 struct evlist_cpu_iterator {
340 /** The list being iterated through. */
341 struct evlist *container;
342 /** The current evsel of the iterator. */
344 /** The CPU map index corresponding to the evsel->core.cpus for the current CPU. */
347 * The CPU map index corresponding to evlist->core.all_cpus for the
348 * current CPU. Distinct from cpu_map_idx as the evsel's cpu map may
349 * contain fewer entries.
351 int evlist_cpu_map_idx;
352 /** The number of CPU map entries in evlist->core.all_cpus. */
353 int evlist_cpu_map_nr;
354 /** The current CPU of the iterator. */
356 /** If present, used to set the affinity when switching between CPUs. */
357 struct affinity *affinity;
361 * evlist__for_each_cpu - without affinity, iterate over the evlist. With
362 * affinity, iterate over all CPUs and then the evlist
363 * for each evsel on that CPU. When switching between
364 * CPUs the affinity is set to the CPU to avoid IPIs
366 * @evlist_cpu_itr: the iterator instance.
367 * @evlist: evlist instance to iterate.
368 * @affinity: NULL or used to set the affinity to the current CPU.
370 #define evlist__for_each_cpu(evlist_cpu_itr, evlist, affinity) \
371 for ((evlist_cpu_itr) = evlist__cpu_begin(evlist, affinity); \
372 !evlist_cpu_iterator__end(&evlist_cpu_itr); \
373 evlist_cpu_iterator__next(&evlist_cpu_itr))
375 /** Returns an iterator set to the first CPU/evsel of evlist. */
376 struct evlist_cpu_iterator evlist__cpu_begin(struct evlist *evlist, struct affinity *affinity);
377 /** Move to next element in iterator, updating CPU, evsel and the affinity. */
378 void evlist_cpu_iterator__next(struct evlist_cpu_iterator *evlist_cpu_itr);
379 /** Returns true when iterator is at the end of the CPUs and evlist. */
380 bool evlist_cpu_iterator__end(const struct evlist_cpu_iterator *evlist_cpu_itr);
382 struct evsel *evlist__get_tracking_event(struct evlist *evlist);
383 void evlist__set_tracking_event(struct evlist *evlist, struct evsel *tracking_evsel);
385 struct evsel *evlist__find_evsel_by_str(struct evlist *evlist, const char *str);
387 struct evsel *evlist__event2evsel(struct evlist *evlist, union perf_event *event);
389 bool evlist__exclude_kernel(struct evlist *evlist);
391 void evlist__force_leader(struct evlist *evlist);
393 struct evsel *evlist__reset_weak_group(struct evlist *evlist, struct evsel *evsel, bool close);
395 #define EVLIST_CTL_CMD_ENABLE_TAG "enable"
396 #define EVLIST_CTL_CMD_DISABLE_TAG "disable"
397 #define EVLIST_CTL_CMD_ACK_TAG "ack\n"
398 #define EVLIST_CTL_CMD_SNAPSHOT_TAG "snapshot"
399 #define EVLIST_CTL_CMD_EVLIST_TAG "evlist"
400 #define EVLIST_CTL_CMD_STOP_TAG "stop"
401 #define EVLIST_CTL_CMD_PING_TAG "ping"
403 #define EVLIST_CTL_CMD_MAX_LEN 64
405 enum evlist_ctl_cmd {
406 EVLIST_CTL_CMD_UNSUPPORTED = 0,
407 EVLIST_CTL_CMD_ENABLE,
408 EVLIST_CTL_CMD_DISABLE,
410 EVLIST_CTL_CMD_SNAPSHOT,
411 EVLIST_CTL_CMD_EVLIST,
416 int evlist__parse_control(const char *str, int *ctl_fd, int *ctl_fd_ack, bool *ctl_fd_close);
417 void evlist__close_control(int ctl_fd, int ctl_fd_ack, bool *ctl_fd_close);
418 int evlist__initialize_ctlfd(struct evlist *evlist, int ctl_fd, int ctl_fd_ack);
419 int evlist__finalize_ctlfd(struct evlist *evlist);
420 bool evlist__ctlfd_initialized(struct evlist *evlist);
421 int evlist__ctlfd_update(struct evlist *evlist, struct pollfd *update);
422 int evlist__ctlfd_process(struct evlist *evlist, enum evlist_ctl_cmd *cmd);
423 int evlist__ctlfd_ack(struct evlist *evlist);
425 #define EVLIST_ENABLED_MSG "Events enabled\n"
426 #define EVLIST_DISABLED_MSG "Events disabled\n"
428 struct evsel *evlist__find_evsel(struct evlist *evlist, int idx);
430 int evlist__scnprintf_evsels(struct evlist *evlist, size_t size, char *bf);
431 void evlist__check_mem_load_aux(struct evlist *evlist);
432 #endif /* __PERF_EVLIST_H */