1// SPDX-License-Identifier: GPL-2.0
2#include <errno.h>
3#include <linux/err.h>
4#include <inttypes.h>
5#include <math.h>
6#include <string.h>
7#include "counts.h"
8#include "cpumap.h"
9#include "debug.h"
10#include "header.h"
11#include "stat.h"
12#include "session.h"
13#include "target.h"
14#include "evlist.h"
15#include "evsel.h"
16#include "thread_map.h"
17#include "util/hashmap.h"
18#include <linux/zalloc.h>
19
20void update_stats(struct stats *stats, u64 val)
21{
22	double delta;
23
24	stats->n++;
25	delta = val - stats->mean;
26	stats->mean += delta / stats->n;
27	stats->M2 += delta*(val - stats->mean);
28
29	if (val > stats->max)
30		stats->max = val;
31
32	if (val < stats->min)
33		stats->min = val;
34}
35
36double avg_stats(struct stats *stats)
37{
38	return stats->mean;
39}
40
41/*
42 * http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance
43 *
44 *       (\Sum n_i^2) - ((\Sum n_i)^2)/n
45 * s^2 = -------------------------------
46 *                  n - 1
47 *
48 * http://en.wikipedia.org/wiki/Stddev
49 *
50 * The std dev of the mean is related to the std dev by:
51 *
52 *             s
53 * s_mean = -------
54 *          sqrt(n)
55 *
56 */
57double stddev_stats(struct stats *stats)
58{
59	double variance, variance_mean;
60
61	if (stats->n < 2)
62		return 0.0;
63
64	variance = stats->M2 / (stats->n - 1);
65	variance_mean = variance / stats->n;
66
67	return sqrt(variance_mean);
68}
69
70double rel_stddev_stats(double stddev, double avg)
71{
72	double pct = 0.0;
73
74	if (avg)
75		pct = 100.0 * stddev/avg;
76
77	return pct;
78}
79
80static void evsel__reset_aggr_stats(struct evsel *evsel)
81{
82	struct perf_stat_evsel *ps = evsel->stats;
83	struct perf_stat_aggr *aggr = ps->aggr;
84
85	if (aggr)
86		memset(aggr, 0, sizeof(*aggr) * ps->nr_aggr);
87}
88
89static void evsel__reset_stat_priv(struct evsel *evsel)
90{
91	struct perf_stat_evsel *ps = evsel->stats;
92
93	init_stats(&ps->res_stats);
94	evsel__reset_aggr_stats(evsel);
95}
96
97static int evsel__alloc_aggr_stats(struct evsel *evsel, int nr_aggr)
98{
99	struct perf_stat_evsel *ps = evsel->stats;
100
101	if (ps == NULL)
102		return 0;
103
104	ps->nr_aggr = nr_aggr;
105	ps->aggr = calloc(nr_aggr, sizeof(*ps->aggr));
106	if (ps->aggr == NULL)
107		return -ENOMEM;
108
109	return 0;
110}
111
112int evlist__alloc_aggr_stats(struct evlist *evlist, int nr_aggr)
113{
114	struct evsel *evsel;
115
116	evlist__for_each_entry(evlist, evsel) {
117		if (evsel__alloc_aggr_stats(evsel, nr_aggr) < 0)
118			return -1;
119	}
120	return 0;
121}
122
123static int evsel__alloc_stat_priv(struct evsel *evsel, int nr_aggr)
124{
125	struct perf_stat_evsel *ps;
126
127	ps = zalloc(sizeof(*ps));
128	if (ps == NULL)
129		return -ENOMEM;
130
131	evsel->stats = ps;
132
133	if (nr_aggr && evsel__alloc_aggr_stats(evsel, nr_aggr) < 0) {
134		evsel->stats = NULL;
135		free(ps);
136		return -ENOMEM;
137	}
138
139	evsel__reset_stat_priv(evsel);
140	return 0;
141}
142
143static void evsel__free_stat_priv(struct evsel *evsel)
144{
145	struct perf_stat_evsel *ps = evsel->stats;
146
147	if (ps) {
148		zfree(&ps->aggr);
149		zfree(&ps->group_data);
150	}
151	zfree(&evsel->stats);
152}
153
154static int evsel__alloc_prev_raw_counts(struct evsel *evsel)
155{
156	int cpu_map_nr = evsel__nr_cpus(evsel);
157	int nthreads = perf_thread_map__nr(evsel->core.threads);
158	struct perf_counts *counts;
159
160	counts = perf_counts__new(cpu_map_nr, nthreads);
161	if (counts)
162		evsel->prev_raw_counts = counts;
163
164	return counts ? 0 : -ENOMEM;
165}
166
167static void evsel__free_prev_raw_counts(struct evsel *evsel)
168{
169	perf_counts__delete(evsel->prev_raw_counts);
170	evsel->prev_raw_counts = NULL;
171}
172
173static void evsel__reset_prev_raw_counts(struct evsel *evsel)
174{
175	if (evsel->prev_raw_counts)
176		perf_counts__reset(evsel->prev_raw_counts);
177}
178
179static int evsel__alloc_stats(struct evsel *evsel, int nr_aggr, bool alloc_raw)
180{
181	if (evsel__alloc_stat_priv(evsel, nr_aggr) < 0 ||
182	    evsel__alloc_counts(evsel) < 0 ||
183	    (alloc_raw && evsel__alloc_prev_raw_counts(evsel) < 0))
184		return -ENOMEM;
185
186	return 0;
187}
188
189int evlist__alloc_stats(struct perf_stat_config *config,
190			struct evlist *evlist, bool alloc_raw)
191{
192	struct evsel *evsel;
193	int nr_aggr = 0;
194
195	if (config && config->aggr_map)
196		nr_aggr = config->aggr_map->nr;
197
198	evlist__for_each_entry(evlist, evsel) {
199		if (evsel__alloc_stats(evsel, nr_aggr, alloc_raw))
200			goto out_free;
201	}
202
203	return 0;
204
205out_free:
206	evlist__free_stats(evlist);
207	return -1;
208}
209
210void evlist__free_stats(struct evlist *evlist)
211{
212	struct evsel *evsel;
213
214	evlist__for_each_entry(evlist, evsel) {
215		evsel__free_stat_priv(evsel);
216		evsel__free_counts(evsel);
217		evsel__free_prev_raw_counts(evsel);
218	}
219}
220
221void evlist__reset_stats(struct evlist *evlist)
222{
223	struct evsel *evsel;
224
225	evlist__for_each_entry(evlist, evsel) {
226		evsel__reset_stat_priv(evsel);
227		evsel__reset_counts(evsel);
228	}
229}
230
231void evlist__reset_aggr_stats(struct evlist *evlist)
232{
233	struct evsel *evsel;
234
235	evlist__for_each_entry(evlist, evsel)
236		evsel__reset_aggr_stats(evsel);
237}
238
239void evlist__reset_prev_raw_counts(struct evlist *evlist)
240{
241	struct evsel *evsel;
242
243	evlist__for_each_entry(evlist, evsel)
244		evsel__reset_prev_raw_counts(evsel);
245}
246
247static void evsel__copy_prev_raw_counts(struct evsel *evsel)
248{
249	int idx, nthreads = perf_thread_map__nr(evsel->core.threads);
250
251	for (int thread = 0; thread < nthreads; thread++) {
252		perf_cpu_map__for_each_idx(idx, evsel__cpus(evsel)) {
253			*perf_counts(evsel->counts, idx, thread) =
254				*perf_counts(evsel->prev_raw_counts, idx, thread);
255		}
256	}
257}
258
259void evlist__copy_prev_raw_counts(struct evlist *evlist)
260{
261	struct evsel *evsel;
262
263	evlist__for_each_entry(evlist, evsel)
264		evsel__copy_prev_raw_counts(evsel);
265}
266
267static void evsel__copy_res_stats(struct evsel *evsel)
268{
269	struct perf_stat_evsel *ps = evsel->stats;
270
271	/*
272	 * For GLOBAL aggregation mode, it updates the counts for each run
273	 * in the evsel->stats.res_stats.  See perf_stat_process_counter().
274	 */
275	*ps->aggr[0].counts.values = avg_stats(&ps->res_stats);
276}
277
278void evlist__copy_res_stats(struct perf_stat_config *config, struct evlist *evlist)
279{
280	struct evsel *evsel;
281
282	if (config->aggr_mode != AGGR_GLOBAL)
283		return;
284
285	evlist__for_each_entry(evlist, evsel)
286		evsel__copy_res_stats(evsel);
287}
288
289static size_t pkg_id_hash(long __key, void *ctx __maybe_unused)
290{
291	uint64_t *key = (uint64_t *) __key;
292
293	return *key & 0xffffffff;
294}
295
296static bool pkg_id_equal(long __key1, long __key2, void *ctx __maybe_unused)
297{
298	uint64_t *key1 = (uint64_t *) __key1;
299	uint64_t *key2 = (uint64_t *) __key2;
300
301	return *key1 == *key2;
302}
303
304static int check_per_pkg(struct evsel *counter, struct perf_counts_values *vals,
305			 int cpu_map_idx, bool *skip)
306{
307	struct hashmap *mask = counter->per_pkg_mask;
308	struct perf_cpu_map *cpus = evsel__cpus(counter);
309	struct perf_cpu cpu = perf_cpu_map__cpu(cpus, cpu_map_idx);
310	int s, d, ret = 0;
311	uint64_t *key;
312
313	*skip = false;
314
315	if (!counter->per_pkg)
316		return 0;
317
318	if (perf_cpu_map__has_any_cpu_or_is_empty(cpus))
319		return 0;
320
321	if (!mask) {
322		mask = hashmap__new(pkg_id_hash, pkg_id_equal, NULL);
323		if (IS_ERR(mask))
324			return -ENOMEM;
325
326		counter->per_pkg_mask = mask;
327	}
328
329	/*
330	 * we do not consider an event that has not run as a good
331	 * instance to mark a package as used (skip=1). Otherwise
332	 * we may run into a situation where the first CPU in a package
333	 * is not running anything, yet the second is, and this function
334	 * would mark the package as used after the first CPU and would
335	 * not read the values from the second CPU.
336	 */
337	if (!(vals->run && vals->ena))
338		return 0;
339
340	s = cpu__get_socket_id(cpu);
341	if (s < 0)
342		return -1;
343
344	/*
345	 * On multi-die system, die_id > 0. On no-die system, die_id = 0.
346	 * We use hashmap(socket, die) to check the used socket+die pair.
347	 */
348	d = cpu__get_die_id(cpu);
349	if (d < 0)
350		return -1;
351
352	key = malloc(sizeof(*key));
353	if (!key)
354		return -ENOMEM;
355
356	*key = (uint64_t)d << 32 | s;
357	if (hashmap__find(mask, key, NULL)) {
358		*skip = true;
359		free(key);
360	} else
361		ret = hashmap__add(mask, key, 1);
362
363	return ret;
364}
365
366static bool evsel__count_has_error(struct evsel *evsel,
367				   struct perf_counts_values *count,
368				   struct perf_stat_config *config)
369{
370	/* the evsel was failed already */
371	if (evsel->err || evsel->counts->scaled == -1)
372		return true;
373
374	/* this is meaningful for CPU aggregation modes only */
375	if (config->aggr_mode == AGGR_GLOBAL)
376		return false;
377
378	/* it's considered ok when it actually ran */
379	if (count->ena != 0 && count->run != 0)
380		return false;
381
382	return true;
383}
384
385static int
386process_counter_values(struct perf_stat_config *config, struct evsel *evsel,
387		       int cpu_map_idx, int thread,
388		       struct perf_counts_values *count)
389{
390	struct perf_stat_evsel *ps = evsel->stats;
391	static struct perf_counts_values zero;
392	bool skip = false;
393
394	if (check_per_pkg(evsel, count, cpu_map_idx, &skip)) {
395		pr_err("failed to read per-pkg counter\n");
396		return -1;
397	}
398
399	if (skip)
400		count = &zero;
401
402	if (!evsel->snapshot)
403		evsel__compute_deltas(evsel, cpu_map_idx, thread, count);
404	perf_counts_values__scale(count, config->scale, NULL);
405
406	if (config->aggr_mode == AGGR_THREAD) {
407		struct perf_counts_values *aggr_counts = &ps->aggr[thread].counts;
408
409		/*
410		 * Skip value 0 when enabling --per-thread globally,
411		 * otherwise too many 0 output.
412		 */
413		if (count->val == 0 && config->system_wide)
414			return 0;
415
416		ps->aggr[thread].nr++;
417
418		aggr_counts->val += count->val;
419		aggr_counts->ena += count->ena;
420		aggr_counts->run += count->run;
421		return 0;
422	}
423
424	if (ps->aggr) {
425		struct perf_cpu cpu = perf_cpu_map__cpu(evsel->core.cpus, cpu_map_idx);
426		struct aggr_cpu_id aggr_id = config->aggr_get_id(config, cpu);
427		struct perf_stat_aggr *ps_aggr;
428		int i;
429
430		for (i = 0; i < ps->nr_aggr; i++) {
431			if (!aggr_cpu_id__equal(&aggr_id, &config->aggr_map->map[i]))
432				continue;
433
434			ps_aggr = &ps->aggr[i];
435			ps_aggr->nr++;
436
437			/*
438			 * When any result is bad, make them all to give consistent output
439			 * in interval mode.  But per-task counters can have 0 enabled time
440			 * when some tasks are idle.
441			 */
442			if (evsel__count_has_error(evsel, count, config) && !ps_aggr->failed) {
443				ps_aggr->counts.val = 0;
444				ps_aggr->counts.ena = 0;
445				ps_aggr->counts.run = 0;
446				ps_aggr->failed = true;
447			}
448
449			if (!ps_aggr->failed) {
450				ps_aggr->counts.val += count->val;
451				ps_aggr->counts.ena += count->ena;
452				ps_aggr->counts.run += count->run;
453			}
454			break;
455		}
456	}
457
458	return 0;
459}
460
461static int process_counter_maps(struct perf_stat_config *config,
462				struct evsel *counter)
463{
464	int nthreads = perf_thread_map__nr(counter->core.threads);
465	int ncpus = evsel__nr_cpus(counter);
466	int idx, thread;
467
468	for (thread = 0; thread < nthreads; thread++) {
469		for (idx = 0; idx < ncpus; idx++) {
470			if (process_counter_values(config, counter, idx, thread,
471						   perf_counts(counter->counts, idx, thread)))
472				return -1;
473		}
474	}
475
476	return 0;
477}
478
479int perf_stat_process_counter(struct perf_stat_config *config,
480			      struct evsel *counter)
481{
482	struct perf_stat_evsel *ps = counter->stats;
483	u64 *count;
484	int ret;
485
486	if (counter->per_pkg)
487		evsel__zero_per_pkg(counter);
488
489	ret = process_counter_maps(config, counter);
490	if (ret)
491		return ret;
492
493	if (config->aggr_mode != AGGR_GLOBAL)
494		return 0;
495
496	/*
497	 * GLOBAL aggregation mode only has a single aggr counts,
498	 * so we can use ps->aggr[0] as the actual output.
499	 */
500	count = ps->aggr[0].counts.values;
501	update_stats(&ps->res_stats, *count);
502
503	if (verbose > 0) {
504		fprintf(config->output, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
505			evsel__name(counter), count[0], count[1], count[2]);
506	}
507
508	return 0;
509}
510
511static int evsel__merge_aggr_counters(struct evsel *evsel, struct evsel *alias)
512{
513	struct perf_stat_evsel *ps_a = evsel->stats;
514	struct perf_stat_evsel *ps_b = alias->stats;
515	int i;
516
517	if (ps_a->aggr == NULL && ps_b->aggr == NULL)
518		return 0;
519
520	if (ps_a->nr_aggr != ps_b->nr_aggr) {
521		pr_err("Unmatched aggregation mode between aliases\n");
522		return -1;
523	}
524
525	for (i = 0; i < ps_a->nr_aggr; i++) {
526		struct perf_counts_values *aggr_counts_a = &ps_a->aggr[i].counts;
527		struct perf_counts_values *aggr_counts_b = &ps_b->aggr[i].counts;
528
529		/* NB: don't increase aggr.nr for aliases */
530
531		aggr_counts_a->val += aggr_counts_b->val;
532		aggr_counts_a->ena += aggr_counts_b->ena;
533		aggr_counts_a->run += aggr_counts_b->run;
534	}
535
536	return 0;
537}
538/* events should have the same name, scale, unit, cgroup but on different PMUs */
539static bool evsel__is_alias(struct evsel *evsel_a, struct evsel *evsel_b)
540{
541	if (strcmp(evsel__name(evsel_a), evsel__name(evsel_b)))
542		return false;
543
544	if (evsel_a->scale != evsel_b->scale)
545		return false;
546
547	if (evsel_a->cgrp != evsel_b->cgrp)
548		return false;
549
550	if (strcmp(evsel_a->unit, evsel_b->unit))
551		return false;
552
553	if (evsel__is_clock(evsel_a) != evsel__is_clock(evsel_b))
554		return false;
555
556	return !!strcmp(evsel_a->pmu_name, evsel_b->pmu_name);
557}
558
559static void evsel__merge_aliases(struct evsel *evsel)
560{
561	struct evlist *evlist = evsel->evlist;
562	struct evsel *alias;
563
564	alias = list_prepare_entry(evsel, &(evlist->core.entries), core.node);
565	list_for_each_entry_continue(alias, &evlist->core.entries, core.node) {
566		/* Merge the same events on different PMUs. */
567		if (evsel__is_alias(evsel, alias)) {
568			evsel__merge_aggr_counters(evsel, alias);
569			alias->merged_stat = true;
570		}
571	}
572}
573
574static bool evsel__should_merge_hybrid(const struct evsel *evsel,
575				       const struct perf_stat_config *config)
576{
577	return config->hybrid_merge && evsel__is_hybrid(evsel);
578}
579
580static void evsel__merge_stats(struct evsel *evsel, struct perf_stat_config *config)
581{
582	/* this evsel is already merged */
583	if (evsel->merged_stat)
584		return;
585
586	if (evsel->auto_merge_stats || evsel__should_merge_hybrid(evsel, config))
587		evsel__merge_aliases(evsel);
588}
589
590/* merge the same uncore and hybrid events if requested */
591void perf_stat_merge_counters(struct perf_stat_config *config, struct evlist *evlist)
592{
593	struct evsel *evsel;
594
595	if (config->aggr_mode == AGGR_NONE)
596		return;
597
598	evlist__for_each_entry(evlist, evsel)
599		evsel__merge_stats(evsel, config);
600}
601
602static void evsel__update_percore_stats(struct evsel *evsel, struct aggr_cpu_id *core_id)
603{
604	struct perf_stat_evsel *ps = evsel->stats;
605	struct perf_counts_values counts = { 0, };
606	struct aggr_cpu_id id;
607	struct perf_cpu cpu;
608	int idx;
609
610	/* collect per-core counts */
611	perf_cpu_map__for_each_cpu(cpu, idx, evsel->core.cpus) {
612		struct perf_stat_aggr *aggr = &ps->aggr[idx];
613
614		id = aggr_cpu_id__core(cpu, NULL);
615		if (!aggr_cpu_id__equal(core_id, &id))
616			continue;
617
618		counts.val += aggr->counts.val;
619		counts.ena += aggr->counts.ena;
620		counts.run += aggr->counts.run;
621	}
622
623	/* update aggregated per-core counts for each CPU */
624	perf_cpu_map__for_each_cpu(cpu, idx, evsel->core.cpus) {
625		struct perf_stat_aggr *aggr = &ps->aggr[idx];
626
627		id = aggr_cpu_id__core(cpu, NULL);
628		if (!aggr_cpu_id__equal(core_id, &id))
629			continue;
630
631		aggr->counts.val = counts.val;
632		aggr->counts.ena = counts.ena;
633		aggr->counts.run = counts.run;
634
635		aggr->used = true;
636	}
637}
638
639/* we have an aggr_map for cpu, but want to aggregate the counters per-core */
640static void evsel__process_percore(struct evsel *evsel)
641{
642	struct perf_stat_evsel *ps = evsel->stats;
643	struct aggr_cpu_id core_id;
644	struct perf_cpu cpu;
645	int idx;
646
647	if (!evsel->percore)
648		return;
649
650	perf_cpu_map__for_each_cpu(cpu, idx, evsel->core.cpus) {
651		struct perf_stat_aggr *aggr = &ps->aggr[idx];
652
653		if (aggr->used)
654			continue;
655
656		core_id = aggr_cpu_id__core(cpu, NULL);
657		evsel__update_percore_stats(evsel, &core_id);
658	}
659}
660
661/* process cpu stats on per-core events */
662void perf_stat_process_percore(struct perf_stat_config *config, struct evlist *evlist)
663{
664	struct evsel *evsel;
665
666	if (config->aggr_mode != AGGR_NONE)
667		return;
668
669	evlist__for_each_entry(evlist, evsel)
670		evsel__process_percore(evsel);
671}
672
673int perf_event__process_stat_event(struct perf_session *session,
674				   union perf_event *event)
675{
676	struct perf_counts_values count, *ptr;
677	struct perf_record_stat *st = &event->stat;
678	struct evsel *counter;
679	int cpu_map_idx;
680
681	count.val = st->val;
682	count.ena = st->ena;
683	count.run = st->run;
684
685	counter = evlist__id2evsel(session->evlist, st->id);
686	if (!counter) {
687		pr_err("Failed to resolve counter for stat event.\n");
688		return -EINVAL;
689	}
690	cpu_map_idx = perf_cpu_map__idx(evsel__cpus(counter), (struct perf_cpu){.cpu = st->cpu});
691	if (cpu_map_idx == -1) {
692		pr_err("Invalid CPU %d for event %s.\n", st->cpu, evsel__name(counter));
693		return -EINVAL;
694	}
695	ptr = perf_counts(counter->counts, cpu_map_idx, st->thread);
696	if (ptr == NULL) {
697		pr_err("Failed to find perf count for CPU %d thread %d on event %s.\n",
698			st->cpu, st->thread, evsel__name(counter));
699		return -EINVAL;
700	}
701	*ptr = count;
702	counter->supported = true;
703	return 0;
704}
705
706size_t perf_event__fprintf_stat(union perf_event *event, FILE *fp)
707{
708	struct perf_record_stat *st = (struct perf_record_stat *)event;
709	size_t ret;
710
711	ret  = fprintf(fp, "\n... id %" PRI_lu64 ", cpu %d, thread %d\n",
712		       st->id, st->cpu, st->thread);
713	ret += fprintf(fp, "... value %" PRI_lu64 ", enabled %" PRI_lu64 ", running %" PRI_lu64 "\n",
714		       st->val, st->ena, st->run);
715
716	return ret;
717}
718
719size_t perf_event__fprintf_stat_round(union perf_event *event, FILE *fp)
720{
721	struct perf_record_stat_round *rd = (struct perf_record_stat_round *)event;
722	size_t ret;
723
724	ret = fprintf(fp, "\n... time %" PRI_lu64 ", type %s\n", rd->time,
725		      rd->type == PERF_STAT_ROUND_TYPE__FINAL ? "FINAL" : "INTERVAL");
726
727	return ret;
728}
729
730size_t perf_event__fprintf_stat_config(union perf_event *event, FILE *fp)
731{
732	struct perf_stat_config sc = {};
733	size_t ret;
734
735	perf_event__read_stat_config(&sc, &event->stat_config);
736
737	ret  = fprintf(fp, "\n");
738	ret += fprintf(fp, "... aggr_mode %d\n", sc.aggr_mode);
739	ret += fprintf(fp, "... scale     %d\n", sc.scale);
740	ret += fprintf(fp, "... interval  %u\n", sc.interval);
741
742	return ret;
743}
744
745int create_perf_stat_counter(struct evsel *evsel,
746			     struct perf_stat_config *config,
747			     struct target *target,
748			     int cpu_map_idx)
749{
750	struct perf_event_attr *attr = &evsel->core.attr;
751	struct evsel *leader = evsel__leader(evsel);
752
753	attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
754			    PERF_FORMAT_TOTAL_TIME_RUNNING;
755
756	/*
757	 * The event is part of non trivial group, let's enable
758	 * the group read (for leader) and ID retrieval for all
759	 * members.
760	 */
761	if (leader->core.nr_members > 1)
762		attr->read_format |= PERF_FORMAT_ID|PERF_FORMAT_GROUP;
763
764	attr->inherit = !config->no_inherit && list_empty(&evsel->bpf_counter_list);
765
766	/*
767	 * Some events get initialized with sample_(period/type) set,
768	 * like tracepoints. Clear it up for counting.
769	 */
770	attr->sample_period = 0;
771
772	if (config->identifier)
773		attr->sample_type = PERF_SAMPLE_IDENTIFIER;
774
775	if (config->all_user) {
776		attr->exclude_kernel = 1;
777		attr->exclude_user   = 0;
778	}
779
780	if (config->all_kernel) {
781		attr->exclude_kernel = 0;
782		attr->exclude_user   = 1;
783	}
784
785	/*
786	 * Disabling all counters initially, they will be enabled
787	 * either manually by us or by kernel via enable_on_exec
788	 * set later.
789	 */
790	if (evsel__is_group_leader(evsel)) {
791		attr->disabled = 1;
792
793		if (target__enable_on_exec(target))
794			attr->enable_on_exec = 1;
795	}
796
797	if (target__has_cpu(target) && !target__has_per_thread(target))
798		return evsel__open_per_cpu(evsel, evsel__cpus(evsel), cpu_map_idx);
799
800	return evsel__open_per_thread(evsel, evsel->core.threads);
801}
802