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 (perf_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 char *filter;
47 struct perf_counts *counts;
48 struct perf_counts *prev_raw_counts;
49 int idx;
50 unsigned long max_events;
51 unsigned long nr_events_printed;
52 char *name;
53 double scale;
54 const char *unit;
55 struct tep_event *tp_format;
56 off_t id_offset;
57 struct perf_stat_evsel *stats;
58 void *priv;
59 u64 db_id;
60 struct cgroup *cgrp;
61 void *handler;
62 unsigned int sample_size;
63 int id_pos;
64 int is_pos;
65 enum perf_tool_event tool_event;
66 bool uniquified_name;
67 bool snapshot;
68 bool supported;
69 bool needs_swap;
70 bool disabled;
71 bool no_aux_samples;
72 bool immediate;
73 bool tracking;
74 bool per_pkg;
75 bool precise_max;
76 bool ignore_missing_thread;
77 bool forced_leader;
78 bool use_uncore_alias;
79 /* parse modifier helper */
80 int exclude_GH;
81 int sample_read;
82 unsigned long *per_pkg_mask;
83 struct evsel *leader;
84 char *group_name;
85 bool cmdline_group_boundary;
86 struct list_head config_terms;
87 struct bpf_object *bpf_obj;
88 int bpf_fd;
89 bool auto_merge_stats;
90 bool merged_stat;
91 const char * metric_expr;
92 const char * metric_name;
93 struct evsel **metric_events;
94 struct evsel *metric_leader;
95 bool collect_stat;
96 bool weak_group;
97 bool percore;
98 const char *pmu_name;
99 struct {
100 perf_evsel__sb_cb_t *cb;
101 void *data;
102 } side_band;
103 };
104
105 struct perf_missing_features {
106 bool sample_id_all;
107 bool exclude_guest;
108 bool mmap2;
109 bool cloexec;
110 bool clockid;
111 bool clockid_wrong;
112 bool lbr_flags;
113 bool write_backward;
114 bool group_read;
115 bool ksymbol;
116 bool bpf;
117 bool aux_output;
118 };
119
120 extern struct perf_missing_features perf_missing_features;
121
122 struct perf_cpu_map;
123 struct target;
124 struct thread_map;
125 struct record_opts;
126
evsel__cpus(struct evsel * evsel)127 static inline struct perf_cpu_map *evsel__cpus(struct evsel *evsel)
128 {
129 return perf_evsel__cpus(&evsel->core);
130 }
131
perf_evsel__nr_cpus(struct evsel * evsel)132 static inline int perf_evsel__nr_cpus(struct evsel *evsel)
133 {
134 return evsel__cpus(evsel)->nr;
135 }
136
137 void perf_counts_values__scale(struct perf_counts_values *count,
138 bool scale, s8 *pscaled);
139
140 void perf_evsel__compute_deltas(struct evsel *evsel, int cpu, int thread,
141 struct perf_counts_values *count);
142
143 int perf_evsel__object_config(size_t object_size,
144 int (*init)(struct evsel *evsel),
145 void (*fini)(struct evsel *evsel));
146
147 struct evsel *perf_evsel__new_idx(struct perf_event_attr *attr, int idx);
148
evsel__new(struct perf_event_attr * attr)149 static inline struct evsel *evsel__new(struct perf_event_attr *attr)
150 {
151 return perf_evsel__new_idx(attr, 0);
152 }
153
154 struct evsel *perf_evsel__newtp_idx(const char *sys, const char *name, int idx);
155
156 /*
157 * Returns pointer with encoded error via <linux/err.h> interface.
158 */
perf_evsel__newtp(const char * sys,const char * name)159 static inline struct evsel *perf_evsel__newtp(const char *sys, const char *name)
160 {
161 return perf_evsel__newtp_idx(sys, name, 0);
162 }
163
164 struct evsel *perf_evsel__new_cycles(bool precise);
165
166 struct tep_event *event_format__new(const char *sys, const char *name);
167
168 void evsel__init(struct evsel *evsel, struct perf_event_attr *attr, int idx);
169 void perf_evsel__exit(struct evsel *evsel);
170 void evsel__delete(struct evsel *evsel);
171
172 struct callchain_param;
173
174 void perf_evsel__config(struct evsel *evsel,
175 struct record_opts *opts,
176 struct callchain_param *callchain);
177 void perf_evsel__config_callchain(struct evsel *evsel,
178 struct record_opts *opts,
179 struct callchain_param *callchain);
180
181 int __perf_evsel__sample_size(u64 sample_type);
182 void perf_evsel__calc_id_pos(struct evsel *evsel);
183
184 bool perf_evsel__is_cache_op_valid(u8 type, u8 op);
185
186 #define PERF_EVSEL__MAX_ALIASES 8
187
188 extern const char *perf_evsel__hw_cache[PERF_COUNT_HW_CACHE_MAX]
189 [PERF_EVSEL__MAX_ALIASES];
190 extern const char *perf_evsel__hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX]
191 [PERF_EVSEL__MAX_ALIASES];
192 extern const char *perf_evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX]
193 [PERF_EVSEL__MAX_ALIASES];
194 extern const char *perf_evsel__hw_names[PERF_COUNT_HW_MAX];
195 extern const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX];
196 int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result,
197 char *bf, size_t size);
198 const char *perf_evsel__name(struct evsel *evsel);
199
200 const char *perf_evsel__group_name(struct evsel *evsel);
201 int perf_evsel__group_desc(struct evsel *evsel, char *buf, size_t size);
202
203 void __perf_evsel__set_sample_bit(struct evsel *evsel,
204 enum perf_event_sample_format bit);
205 void __perf_evsel__reset_sample_bit(struct evsel *evsel,
206 enum perf_event_sample_format bit);
207
208 #define perf_evsel__set_sample_bit(evsel, bit) \
209 __perf_evsel__set_sample_bit(evsel, PERF_SAMPLE_##bit)
210
211 #define perf_evsel__reset_sample_bit(evsel, bit) \
212 __perf_evsel__reset_sample_bit(evsel, PERF_SAMPLE_##bit)
213
214 void perf_evsel__set_sample_id(struct evsel *evsel,
215 bool use_sample_identifier);
216
217 int perf_evsel__set_filter(struct evsel *evsel, const char *filter);
218 int perf_evsel__append_tp_filter(struct evsel *evsel, const char *filter);
219 int perf_evsel__append_addr_filter(struct evsel *evsel,
220 const char *filter);
221 int evsel__enable(struct evsel *evsel);
222 int evsel__disable(struct evsel *evsel);
223
224 int perf_evsel__open_per_cpu(struct evsel *evsel,
225 struct perf_cpu_map *cpus);
226 int perf_evsel__open_per_thread(struct evsel *evsel,
227 struct perf_thread_map *threads);
228 int evsel__open(struct evsel *evsel, struct perf_cpu_map *cpus,
229 struct perf_thread_map *threads);
230 void evsel__close(struct evsel *evsel);
231
232 struct perf_sample;
233
234 void *perf_evsel__rawptr(struct evsel *evsel, struct perf_sample *sample,
235 const char *name);
236 u64 perf_evsel__intval(struct evsel *evsel, struct perf_sample *sample,
237 const char *name);
238
perf_evsel__strval(struct evsel * evsel,struct perf_sample * sample,const char * name)239 static inline char *perf_evsel__strval(struct evsel *evsel,
240 struct perf_sample *sample,
241 const char *name)
242 {
243 return perf_evsel__rawptr(evsel, sample, name);
244 }
245
246 struct tep_format_field;
247
248 u64 format_field__intval(struct tep_format_field *field, struct perf_sample *sample, bool needs_swap);
249
250 struct tep_format_field *perf_evsel__field(struct evsel *evsel, const char *name);
251
252 #define perf_evsel__match(evsel, t, c) \
253 (evsel->core.attr.type == PERF_TYPE_##t && \
254 evsel->core.attr.config == PERF_COUNT_##c)
255
perf_evsel__match2(struct evsel * e1,struct evsel * e2)256 static inline bool perf_evsel__match2(struct evsel *e1,
257 struct evsel *e2)
258 {
259 return (e1->core.attr.type == e2->core.attr.type) &&
260 (e1->core.attr.config == e2->core.attr.config);
261 }
262
263 #define perf_evsel__cmp(a, b) \
264 ((a) && \
265 (b) && \
266 (a)->core.attr.type == (b)->core.attr.type && \
267 (a)->core.attr.config == (b)->core.attr.config)
268
269 int perf_evsel__read_counter(struct evsel *evsel, int cpu, int thread);
270
271 int __perf_evsel__read_on_cpu(struct evsel *evsel,
272 int cpu, int thread, bool scale);
273
274 /**
275 * perf_evsel__read_on_cpu - Read out the results on a CPU and thread
276 *
277 * @evsel - event selector to read value
278 * @cpu - CPU of interest
279 * @thread - thread of interest
280 */
perf_evsel__read_on_cpu(struct evsel * evsel,int cpu,int thread)281 static inline int perf_evsel__read_on_cpu(struct evsel *evsel,
282 int cpu, int thread)
283 {
284 return __perf_evsel__read_on_cpu(evsel, cpu, thread, false);
285 }
286
287 /**
288 * perf_evsel__read_on_cpu_scaled - Read out the results on a CPU and thread, scaled
289 *
290 * @evsel - event selector to read value
291 * @cpu - CPU of interest
292 * @thread - thread of interest
293 */
perf_evsel__read_on_cpu_scaled(struct evsel * evsel,int cpu,int thread)294 static inline int perf_evsel__read_on_cpu_scaled(struct evsel *evsel,
295 int cpu, int thread)
296 {
297 return __perf_evsel__read_on_cpu(evsel, cpu, thread, true);
298 }
299
300 int perf_evsel__parse_sample(struct evsel *evsel, union perf_event *event,
301 struct perf_sample *sample);
302
303 int perf_evsel__parse_sample_timestamp(struct evsel *evsel,
304 union perf_event *event,
305 u64 *timestamp);
306
perf_evsel__next(struct evsel * evsel)307 static inline struct evsel *perf_evsel__next(struct evsel *evsel)
308 {
309 return list_entry(evsel->core.node.next, struct evsel, core.node);
310 }
311
perf_evsel__prev(struct evsel * evsel)312 static inline struct evsel *perf_evsel__prev(struct evsel *evsel)
313 {
314 return list_entry(evsel->core.node.prev, struct evsel, core.node);
315 }
316
317 /**
318 * perf_evsel__is_group_leader - Return whether given evsel is a leader event
319 *
320 * @evsel - evsel selector to be tested
321 *
322 * Return %true if @evsel is a group leader or a stand-alone event
323 */
perf_evsel__is_group_leader(const struct evsel * evsel)324 static inline bool perf_evsel__is_group_leader(const struct evsel *evsel)
325 {
326 return evsel->leader == evsel;
327 }
328
329 /**
330 * perf_evsel__is_group_event - Return whether given evsel is a group event
331 *
332 * @evsel - evsel selector to be tested
333 *
334 * Return %true iff event group view is enabled and @evsel is a actual group
335 * leader which has other members in the group
336 */
perf_evsel__is_group_event(struct evsel * evsel)337 static inline bool perf_evsel__is_group_event(struct evsel *evsel)
338 {
339 if (!symbol_conf.event_group)
340 return false;
341
342 return perf_evsel__is_group_leader(evsel) && evsel->core.nr_members > 1;
343 }
344
345 bool perf_evsel__is_function_event(struct evsel *evsel);
346
perf_evsel__is_bpf_output(struct evsel * evsel)347 static inline bool perf_evsel__is_bpf_output(struct evsel *evsel)
348 {
349 return perf_evsel__match(evsel, SOFTWARE, SW_BPF_OUTPUT);
350 }
351
perf_evsel__is_clock(struct evsel * evsel)352 static inline bool perf_evsel__is_clock(struct evsel *evsel)
353 {
354 return perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
355 perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK);
356 }
357
358 bool perf_evsel__fallback(struct evsel *evsel, int err,
359 char *msg, size_t msgsize);
360 int perf_evsel__open_strerror(struct evsel *evsel, struct target *target,
361 int err, char *msg, size_t size);
362
perf_evsel__group_idx(struct evsel * evsel)363 static inline int perf_evsel__group_idx(struct evsel *evsel)
364 {
365 return evsel->idx - evsel->leader->idx;
366 }
367
368 /* Iterates group WITHOUT the leader. */
369 #define for_each_group_member(_evsel, _leader) \
370 for ((_evsel) = list_entry((_leader)->core.node.next, struct evsel, core.node); \
371 (_evsel) && (_evsel)->leader == (_leader); \
372 (_evsel) = list_entry((_evsel)->core.node.next, struct evsel, core.node))
373
374 /* Iterates group WITH the leader. */
375 #define for_each_group_evsel(_evsel, _leader) \
376 for ((_evsel) = _leader; \
377 (_evsel) && (_evsel)->leader == (_leader); \
378 (_evsel) = list_entry((_evsel)->core.node.next, struct evsel, core.node))
379
perf_evsel__has_branch_callstack(const struct evsel * evsel)380 static inline bool perf_evsel__has_branch_callstack(const struct evsel *evsel)
381 {
382 return evsel->core.attr.branch_sample_type & PERF_SAMPLE_BRANCH_CALL_STACK;
383 }
384
evsel__has_callchain(const struct evsel * evsel)385 static inline bool evsel__has_callchain(const struct evsel *evsel)
386 {
387 return (evsel->core.attr.sample_type & PERF_SAMPLE_CALLCHAIN) != 0;
388 }
389
390 struct perf_env *perf_evsel__env(struct evsel *evsel);
391
392 int perf_evsel__store_ids(struct evsel *evsel, struct evlist *evlist);
393 #endif /* __PERF_EVSEL_H */
394
