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1// SPDX-License-Identifier: GPL-2.0
2#include <errno.h>
3#include <inttypes.h>
4#include <math.h>
5#include "stat.h"
6#include "evlist.h"
7#include "evsel.h"
8#include "thread_map.h"
9
10void update_stats(struct stats *stats, u64 val)
11{
12 double delta;
13
14 stats->n++;
15 delta = val - stats->mean;
16 stats->mean += delta / stats->n;
17 stats->M2 += delta*(val - stats->mean);
18
19 if (val > stats->max)
20 stats->max = val;
21
22 if (val < stats->min)
23 stats->min = val;
24}
25
26double avg_stats(struct stats *stats)
27{
28 return stats->mean;
29}
30
31/*
32 * http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance
33 *
34 * (\Sum n_i^2) - ((\Sum n_i)^2)/n
35 * s^2 = -------------------------------
36 * n - 1
37 *
38 * http://en.wikipedia.org/wiki/Stddev
39 *
40 * The std dev of the mean is related to the std dev by:
41 *
42 * s
43 * s_mean = -------
44 * sqrt(n)
45 *
46 */
47double stddev_stats(struct stats *stats)
48{
49 double variance, variance_mean;
50
51 if (stats->n < 2)
52 return 0.0;
53
54 variance = stats->M2 / (stats->n - 1);
55 variance_mean = variance / stats->n;
56
57 return sqrt(variance_mean);
58}
59
60double rel_stddev_stats(double stddev, double avg)
61{
62 double pct = 0.0;
63
64 if (avg)
65 pct = 100.0 * stddev/avg;
66
67 return pct;
68}
69
70bool __perf_evsel_stat__is(struct perf_evsel *evsel,
71 enum perf_stat_evsel_id id)
72{
73 struct perf_stat_evsel *ps = evsel->stats;
74
75 return ps->id == id;
76}
77
78#define ID(id, name) [PERF_STAT_EVSEL_ID__##id] = #name
79static const char *id_str[PERF_STAT_EVSEL_ID__MAX] = {
80 ID(NONE, x),
81 ID(CYCLES_IN_TX, cpu/cycles-t/),
82 ID(TRANSACTION_START, cpu/tx-start/),
83 ID(ELISION_START, cpu/el-start/),
84 ID(CYCLES_IN_TX_CP, cpu/cycles-ct/),
85 ID(TOPDOWN_TOTAL_SLOTS, topdown-total-slots),
86 ID(TOPDOWN_SLOTS_ISSUED, topdown-slots-issued),
87 ID(TOPDOWN_SLOTS_RETIRED, topdown-slots-retired),
88 ID(TOPDOWN_FETCH_BUBBLES, topdown-fetch-bubbles),
89 ID(TOPDOWN_RECOVERY_BUBBLES, topdown-recovery-bubbles),
90 ID(SMI_NUM, msr/smi/),
91 ID(APERF, msr/aperf/),
92};
93#undef ID
94
95static void perf_stat_evsel_id_init(struct perf_evsel *evsel)
96{
97 struct perf_stat_evsel *ps = evsel->stats;
98 int i;
99
100 /* ps->id is 0 hence PERF_STAT_EVSEL_ID__NONE by default */
101
102 for (i = 0; i < PERF_STAT_EVSEL_ID__MAX; i++) {
103 if (!strcmp(perf_evsel__name(evsel), id_str[i])) {
104 ps->id = i;
105 break;
106 }
107 }
108}
109
110static void perf_evsel__reset_stat_priv(struct perf_evsel *evsel)
111{
112 int i;
113 struct perf_stat_evsel *ps = evsel->stats;
114
115 for (i = 0; i < 3; i++)
116 init_stats(&ps->res_stats[i]);
117
118 perf_stat_evsel_id_init(evsel);
119}
120
121static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel)
122{
123 evsel->stats = zalloc(sizeof(struct perf_stat_evsel));
124 if (evsel->stats == NULL)
125 return -ENOMEM;
126 perf_evsel__reset_stat_priv(evsel);
127 return 0;
128}
129
130static void perf_evsel__free_stat_priv(struct perf_evsel *evsel)
131{
132 struct perf_stat_evsel *ps = evsel->stats;
133
134 if (ps)
135 free(ps->group_data);
136 zfree(&evsel->stats);
137}
138
139static int perf_evsel__alloc_prev_raw_counts(struct perf_evsel *evsel,
140 int ncpus, int nthreads)
141{
142 struct perf_counts *counts;
143
144 counts = perf_counts__new(ncpus, nthreads);
145 if (counts)
146 evsel->prev_raw_counts = counts;
147
148 return counts ? 0 : -ENOMEM;
149}
150
151static void perf_evsel__free_prev_raw_counts(struct perf_evsel *evsel)
152{
153 perf_counts__delete(evsel->prev_raw_counts);
154 evsel->prev_raw_counts = NULL;
155}
156
157static int perf_evsel__alloc_stats(struct perf_evsel *evsel, bool alloc_raw)
158{
159 int ncpus = perf_evsel__nr_cpus(evsel);
160 int nthreads = thread_map__nr(evsel->threads);
161
162 if (perf_evsel__alloc_stat_priv(evsel) < 0 ||
163 perf_evsel__alloc_counts(evsel, ncpus, nthreads) < 0 ||
164 (alloc_raw && perf_evsel__alloc_prev_raw_counts(evsel, ncpus, nthreads) < 0))
165 return -ENOMEM;
166
167 return 0;
168}
169
170int perf_evlist__alloc_stats(struct perf_evlist *evlist, bool alloc_raw)
171{
172 struct perf_evsel *evsel;
173
174 evlist__for_each_entry(evlist, evsel) {
175 if (perf_evsel__alloc_stats(evsel, alloc_raw))
176 goto out_free;
177 }
178
179 return 0;
180
181out_free:
182 perf_evlist__free_stats(evlist);
183 return -1;
184}
185
186void perf_evlist__free_stats(struct perf_evlist *evlist)
187{
188 struct perf_evsel *evsel;
189
190 evlist__for_each_entry(evlist, evsel) {
191 perf_evsel__free_stat_priv(evsel);
192 perf_evsel__free_counts(evsel);
193 perf_evsel__free_prev_raw_counts(evsel);
194 }
195}
196
197void perf_evlist__reset_stats(struct perf_evlist *evlist)
198{
199 struct perf_evsel *evsel;
200
201 evlist__for_each_entry(evlist, evsel) {
202 perf_evsel__reset_stat_priv(evsel);
203 perf_evsel__reset_counts(evsel);
204 }
205}
206
207static void zero_per_pkg(struct perf_evsel *counter)
208{
209 if (counter->per_pkg_mask)
210 memset(counter->per_pkg_mask, 0, MAX_NR_CPUS);
211}
212
213static int check_per_pkg(struct perf_evsel *counter,
214 struct perf_counts_values *vals, int cpu, bool *skip)
215{
216 unsigned long *mask = counter->per_pkg_mask;
217 struct cpu_map *cpus = perf_evsel__cpus(counter);
218 int s;
219
220 *skip = false;
221
222 if (!counter->per_pkg)
223 return 0;
224
225 if (cpu_map__empty(cpus))
226 return 0;
227
228 if (!mask) {
229 mask = zalloc(MAX_NR_CPUS);
230 if (!mask)
231 return -ENOMEM;
232
233 counter->per_pkg_mask = mask;
234 }
235
236 /*
237 * we do not consider an event that has not run as a good
238 * instance to mark a package as used (skip=1). Otherwise
239 * we may run into a situation where the first CPU in a package
240 * is not running anything, yet the second is, and this function
241 * would mark the package as used after the first CPU and would
242 * not read the values from the second CPU.
243 */
244 if (!(vals->run && vals->ena))
245 return 0;
246
247 s = cpu_map__get_socket(cpus, cpu, NULL);
248 if (s < 0)
249 return -1;
250
251 *skip = test_and_set_bit(s, mask) == 1;
252 return 0;
253}
254
255static int
256process_counter_values(struct perf_stat_config *config, struct perf_evsel *evsel,
257 int cpu, int thread,
258 struct perf_counts_values *count)
259{
260 struct perf_counts_values *aggr = &evsel->counts->aggr;
261 static struct perf_counts_values zero;
262 bool skip = false;
263
264 if (check_per_pkg(evsel, count, cpu, &skip)) {
265 pr_err("failed to read per-pkg counter\n");
266 return -1;
267 }
268
269 if (skip)
270 count = &zero;
271
272 switch (config->aggr_mode) {
273 case AGGR_THREAD:
274 case AGGR_CORE:
275 case AGGR_SOCKET:
276 case AGGR_NONE:
277 if (!evsel->snapshot)
278 perf_evsel__compute_deltas(evsel, cpu, thread, count);
279 perf_counts_values__scale(count, config->scale, NULL);
280 if (config->aggr_mode == AGGR_NONE)
281 perf_stat__update_shadow_stats(evsel, count->val, cpu,
282 &rt_stat);
283 if (config->aggr_mode == AGGR_THREAD) {
284 if (config->stats)
285 perf_stat__update_shadow_stats(evsel,
286 count->val, 0, &config->stats[thread]);
287 else
288 perf_stat__update_shadow_stats(evsel,
289 count->val, 0, &rt_stat);
290 }
291 break;
292 case AGGR_GLOBAL:
293 aggr->val += count->val;
294 if (config->scale) {
295 aggr->ena += count->ena;
296 aggr->run += count->run;
297 }
298 case AGGR_UNSET:
299 default:
300 break;
301 }
302
303 return 0;
304}
305
306static int process_counter_maps(struct perf_stat_config *config,
307 struct perf_evsel *counter)
308{
309 int nthreads = thread_map__nr(counter->threads);
310 int ncpus = perf_evsel__nr_cpus(counter);
311 int cpu, thread;
312
313 if (counter->system_wide)
314 nthreads = 1;
315
316 for (thread = 0; thread < nthreads; thread++) {
317 for (cpu = 0; cpu < ncpus; cpu++) {
318 if (process_counter_values(config, counter, cpu, thread,
319 perf_counts(counter->counts, cpu, thread)))
320 return -1;
321 }
322 }
323
324 return 0;
325}
326
327int perf_stat_process_counter(struct perf_stat_config *config,
328 struct perf_evsel *counter)
329{
330 struct perf_counts_values *aggr = &counter->counts->aggr;
331 struct perf_stat_evsel *ps = counter->stats;
332 u64 *count = counter->counts->aggr.values;
333 int i, ret;
334
335 aggr->val = aggr->ena = aggr->run = 0;
336
337 /*
338 * We calculate counter's data every interval,
339 * and the display code shows ps->res_stats
340 * avg value. We need to zero the stats for
341 * interval mode, otherwise overall avg running
342 * averages will be shown for each interval.
343 */
344 if (config->interval)
345 init_stats(ps->res_stats);
346
347 if (counter->per_pkg)
348 zero_per_pkg(counter);
349
350 ret = process_counter_maps(config, counter);
351 if (ret)
352 return ret;
353
354 if (config->aggr_mode != AGGR_GLOBAL)
355 return 0;
356
357 if (!counter->snapshot)
358 perf_evsel__compute_deltas(counter, -1, -1, aggr);
359 perf_counts_values__scale(aggr, config->scale, &counter->counts->scaled);
360
361 for (i = 0; i < 3; i++)
362 update_stats(&ps->res_stats[i], count[i]);
363
364 if (verbose > 0) {
365 fprintf(config->output, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
366 perf_evsel__name(counter), count[0], count[1], count[2]);
367 }
368
369 /*
370 * Save the full runtime - to allow normalization during printout:
371 */
372 perf_stat__update_shadow_stats(counter, *count, 0, &rt_stat);
373
374 return 0;
375}
376
377int perf_event__process_stat_event(struct perf_tool *tool __maybe_unused,
378 union perf_event *event,
379 struct perf_session *session)
380{
381 struct perf_counts_values count;
382 struct stat_event *st = &event->stat;
383 struct perf_evsel *counter;
384
385 count.val = st->val;
386 count.ena = st->ena;
387 count.run = st->run;
388
389 counter = perf_evlist__id2evsel(session->evlist, st->id);
390 if (!counter) {
391 pr_err("Failed to resolve counter for stat event.\n");
392 return -EINVAL;
393 }
394
395 *perf_counts(counter->counts, st->cpu, st->thread) = count;
396 counter->supported = true;
397 return 0;
398}
399
400size_t perf_event__fprintf_stat(union perf_event *event, FILE *fp)
401{
402 struct stat_event *st = (struct stat_event *) event;
403 size_t ret;
404
405 ret = fprintf(fp, "\n... id %" PRIu64 ", cpu %d, thread %d\n",
406 st->id, st->cpu, st->thread);
407 ret += fprintf(fp, "... value %" PRIu64 ", enabled %" PRIu64 ", running %" PRIu64 "\n",
408 st->val, st->ena, st->run);
409
410 return ret;
411}
412
413size_t perf_event__fprintf_stat_round(union perf_event *event, FILE *fp)
414{
415 struct stat_round_event *rd = (struct stat_round_event *)event;
416 size_t ret;
417
418 ret = fprintf(fp, "\n... time %" PRIu64 ", type %s\n", rd->time,
419 rd->type == PERF_STAT_ROUND_TYPE__FINAL ? "FINAL" : "INTERVAL");
420
421 return ret;
422}
423
424size_t perf_event__fprintf_stat_config(union perf_event *event, FILE *fp)
425{
426 struct perf_stat_config sc;
427 size_t ret;
428
429 perf_event__read_stat_config(&sc, &event->stat_config);
430
431 ret = fprintf(fp, "\n");
432 ret += fprintf(fp, "... aggr_mode %d\n", sc.aggr_mode);
433 ret += fprintf(fp, "... scale %d\n", sc.scale);
434 ret += fprintf(fp, "... interval %u\n", sc.interval);
435
436 return ret;
437}
1// SPDX-License-Identifier: GPL-2.0
2#include <errno.h>
3#include <inttypes.h>
4#include <math.h>
5#include <string.h>
6#include "counts.h"
7#include "cpumap.h"
8#include "debug.h"
9#include "header.h"
10#include "stat.h"
11#include "session.h"
12#include "target.h"
13#include "evlist.h"
14#include "evsel.h"
15#include "thread_map.h"
16#include <linux/zalloc.h>
17
18void update_stats(struct stats *stats, u64 val)
19{
20 double delta;
21
22 stats->n++;
23 delta = val - stats->mean;
24 stats->mean += delta / stats->n;
25 stats->M2 += delta*(val - stats->mean);
26
27 if (val > stats->max)
28 stats->max = val;
29
30 if (val < stats->min)
31 stats->min = val;
32}
33
34double avg_stats(struct stats *stats)
35{
36 return stats->mean;
37}
38
39/*
40 * http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance
41 *
42 * (\Sum n_i^2) - ((\Sum n_i)^2)/n
43 * s^2 = -------------------------------
44 * n - 1
45 *
46 * http://en.wikipedia.org/wiki/Stddev
47 *
48 * The std dev of the mean is related to the std dev by:
49 *
50 * s
51 * s_mean = -------
52 * sqrt(n)
53 *
54 */
55double stddev_stats(struct stats *stats)
56{
57 double variance, variance_mean;
58
59 if (stats->n < 2)
60 return 0.0;
61
62 variance = stats->M2 / (stats->n - 1);
63 variance_mean = variance / stats->n;
64
65 return sqrt(variance_mean);
66}
67
68double rel_stddev_stats(double stddev, double avg)
69{
70 double pct = 0.0;
71
72 if (avg)
73 pct = 100.0 * stddev/avg;
74
75 return pct;
76}
77
78bool __perf_evsel_stat__is(struct evsel *evsel,
79 enum perf_stat_evsel_id id)
80{
81 struct perf_stat_evsel *ps = evsel->stats;
82
83 return ps->id == id;
84}
85
86#define ID(id, name) [PERF_STAT_EVSEL_ID__##id] = #name
87static const char *id_str[PERF_STAT_EVSEL_ID__MAX] = {
88 ID(NONE, x),
89 ID(CYCLES_IN_TX, cpu/cycles-t/),
90 ID(TRANSACTION_START, cpu/tx-start/),
91 ID(ELISION_START, cpu/el-start/),
92 ID(CYCLES_IN_TX_CP, cpu/cycles-ct/),
93 ID(TOPDOWN_TOTAL_SLOTS, topdown-total-slots),
94 ID(TOPDOWN_SLOTS_ISSUED, topdown-slots-issued),
95 ID(TOPDOWN_SLOTS_RETIRED, topdown-slots-retired),
96 ID(TOPDOWN_FETCH_BUBBLES, topdown-fetch-bubbles),
97 ID(TOPDOWN_RECOVERY_BUBBLES, topdown-recovery-bubbles),
98 ID(SMI_NUM, msr/smi/),
99 ID(APERF, msr/aperf/),
100};
101#undef ID
102
103static void perf_stat_evsel_id_init(struct evsel *evsel)
104{
105 struct perf_stat_evsel *ps = evsel->stats;
106 int i;
107
108 /* ps->id is 0 hence PERF_STAT_EVSEL_ID__NONE by default */
109
110 for (i = 0; i < PERF_STAT_EVSEL_ID__MAX; i++) {
111 if (!strcmp(perf_evsel__name(evsel), id_str[i])) {
112 ps->id = i;
113 break;
114 }
115 }
116}
117
118static void perf_evsel__reset_stat_priv(struct evsel *evsel)
119{
120 int i;
121 struct perf_stat_evsel *ps = evsel->stats;
122
123 for (i = 0; i < 3; i++)
124 init_stats(&ps->res_stats[i]);
125
126 perf_stat_evsel_id_init(evsel);
127}
128
129static int perf_evsel__alloc_stat_priv(struct evsel *evsel)
130{
131 evsel->stats = zalloc(sizeof(struct perf_stat_evsel));
132 if (evsel->stats == NULL)
133 return -ENOMEM;
134 perf_evsel__reset_stat_priv(evsel);
135 return 0;
136}
137
138static void perf_evsel__free_stat_priv(struct evsel *evsel)
139{
140 struct perf_stat_evsel *ps = evsel->stats;
141
142 if (ps)
143 zfree(&ps->group_data);
144 zfree(&evsel->stats);
145}
146
147static int perf_evsel__alloc_prev_raw_counts(struct evsel *evsel,
148 int ncpus, int nthreads)
149{
150 struct perf_counts *counts;
151
152 counts = perf_counts__new(ncpus, nthreads);
153 if (counts)
154 evsel->prev_raw_counts = counts;
155
156 return counts ? 0 : -ENOMEM;
157}
158
159static void perf_evsel__free_prev_raw_counts(struct evsel *evsel)
160{
161 perf_counts__delete(evsel->prev_raw_counts);
162 evsel->prev_raw_counts = NULL;
163}
164
165static void perf_evsel__reset_prev_raw_counts(struct evsel *evsel)
166{
167 if (evsel->prev_raw_counts) {
168 evsel->prev_raw_counts->aggr.val = 0;
169 evsel->prev_raw_counts->aggr.ena = 0;
170 evsel->prev_raw_counts->aggr.run = 0;
171 }
172}
173
174static int perf_evsel__alloc_stats(struct evsel *evsel, bool alloc_raw)
175{
176 int ncpus = perf_evsel__nr_cpus(evsel);
177 int nthreads = perf_thread_map__nr(evsel->core.threads);
178
179 if (perf_evsel__alloc_stat_priv(evsel) < 0 ||
180 perf_evsel__alloc_counts(evsel, ncpus, nthreads) < 0 ||
181 (alloc_raw && perf_evsel__alloc_prev_raw_counts(evsel, ncpus, nthreads) < 0))
182 return -ENOMEM;
183
184 return 0;
185}
186
187int perf_evlist__alloc_stats(struct evlist *evlist, bool alloc_raw)
188{
189 struct evsel *evsel;
190
191 evlist__for_each_entry(evlist, evsel) {
192 if (perf_evsel__alloc_stats(evsel, alloc_raw))
193 goto out_free;
194 }
195
196 return 0;
197
198out_free:
199 perf_evlist__free_stats(evlist);
200 return -1;
201}
202
203void perf_evlist__free_stats(struct evlist *evlist)
204{
205 struct evsel *evsel;
206
207 evlist__for_each_entry(evlist, evsel) {
208 perf_evsel__free_stat_priv(evsel);
209 perf_evsel__free_counts(evsel);
210 perf_evsel__free_prev_raw_counts(evsel);
211 }
212}
213
214void perf_evlist__reset_stats(struct evlist *evlist)
215{
216 struct evsel *evsel;
217
218 evlist__for_each_entry(evlist, evsel) {
219 perf_evsel__reset_stat_priv(evsel);
220 perf_evsel__reset_counts(evsel);
221 }
222}
223
224void perf_evlist__reset_prev_raw_counts(struct evlist *evlist)
225{
226 struct evsel *evsel;
227
228 evlist__for_each_entry(evlist, evsel)
229 perf_evsel__reset_prev_raw_counts(evsel);
230}
231
232static void zero_per_pkg(struct evsel *counter)
233{
234 if (counter->per_pkg_mask)
235 memset(counter->per_pkg_mask, 0, cpu__max_cpu());
236}
237
238static int check_per_pkg(struct evsel *counter,
239 struct perf_counts_values *vals, int cpu, bool *skip)
240{
241 unsigned long *mask = counter->per_pkg_mask;
242 struct perf_cpu_map *cpus = evsel__cpus(counter);
243 int s;
244
245 *skip = false;
246
247 if (!counter->per_pkg)
248 return 0;
249
250 if (perf_cpu_map__empty(cpus))
251 return 0;
252
253 if (!mask) {
254 mask = zalloc(cpu__max_cpu());
255 if (!mask)
256 return -ENOMEM;
257
258 counter->per_pkg_mask = mask;
259 }
260
261 /*
262 * we do not consider an event that has not run as a good
263 * instance to mark a package as used (skip=1). Otherwise
264 * we may run into a situation where the first CPU in a package
265 * is not running anything, yet the second is, and this function
266 * would mark the package as used after the first CPU and would
267 * not read the values from the second CPU.
268 */
269 if (!(vals->run && vals->ena))
270 return 0;
271
272 s = cpu_map__get_socket(cpus, cpu, NULL);
273 if (s < 0)
274 return -1;
275
276 *skip = test_and_set_bit(s, mask) == 1;
277 return 0;
278}
279
280static int
281process_counter_values(struct perf_stat_config *config, struct evsel *evsel,
282 int cpu, int thread,
283 struct perf_counts_values *count)
284{
285 struct perf_counts_values *aggr = &evsel->counts->aggr;
286 static struct perf_counts_values zero;
287 bool skip = false;
288
289 if (check_per_pkg(evsel, count, cpu, &skip)) {
290 pr_err("failed to read per-pkg counter\n");
291 return -1;
292 }
293
294 if (skip)
295 count = &zero;
296
297 switch (config->aggr_mode) {
298 case AGGR_THREAD:
299 case AGGR_CORE:
300 case AGGR_DIE:
301 case AGGR_SOCKET:
302 case AGGR_NONE:
303 if (!evsel->snapshot)
304 perf_evsel__compute_deltas(evsel, cpu, thread, count);
305 perf_counts_values__scale(count, config->scale, NULL);
306 if ((config->aggr_mode == AGGR_NONE) && (!evsel->percore)) {
307 perf_stat__update_shadow_stats(evsel, count->val,
308 cpu, &rt_stat);
309 }
310
311 if (config->aggr_mode == AGGR_THREAD) {
312 if (config->stats)
313 perf_stat__update_shadow_stats(evsel,
314 count->val, 0, &config->stats[thread]);
315 else
316 perf_stat__update_shadow_stats(evsel,
317 count->val, 0, &rt_stat);
318 }
319 break;
320 case AGGR_GLOBAL:
321 aggr->val += count->val;
322 aggr->ena += count->ena;
323 aggr->run += count->run;
324 case AGGR_UNSET:
325 default:
326 break;
327 }
328
329 return 0;
330}
331
332static int process_counter_maps(struct perf_stat_config *config,
333 struct evsel *counter)
334{
335 int nthreads = perf_thread_map__nr(counter->core.threads);
336 int ncpus = perf_evsel__nr_cpus(counter);
337 int cpu, thread;
338
339 if (counter->core.system_wide)
340 nthreads = 1;
341
342 for (thread = 0; thread < nthreads; thread++) {
343 for (cpu = 0; cpu < ncpus; cpu++) {
344 if (process_counter_values(config, counter, cpu, thread,
345 perf_counts(counter->counts, cpu, thread)))
346 return -1;
347 }
348 }
349
350 return 0;
351}
352
353int perf_stat_process_counter(struct perf_stat_config *config,
354 struct evsel *counter)
355{
356 struct perf_counts_values *aggr = &counter->counts->aggr;
357 struct perf_stat_evsel *ps = counter->stats;
358 u64 *count = counter->counts->aggr.values;
359 int i, ret;
360
361 aggr->val = aggr->ena = aggr->run = 0;
362
363 /*
364 * We calculate counter's data every interval,
365 * and the display code shows ps->res_stats
366 * avg value. We need to zero the stats for
367 * interval mode, otherwise overall avg running
368 * averages will be shown for each interval.
369 */
370 if (config->interval)
371 init_stats(ps->res_stats);
372
373 if (counter->per_pkg)
374 zero_per_pkg(counter);
375
376 ret = process_counter_maps(config, counter);
377 if (ret)
378 return ret;
379
380 if (config->aggr_mode != AGGR_GLOBAL)
381 return 0;
382
383 if (!counter->snapshot)
384 perf_evsel__compute_deltas(counter, -1, -1, aggr);
385 perf_counts_values__scale(aggr, config->scale, &counter->counts->scaled);
386
387 for (i = 0; i < 3; i++)
388 update_stats(&ps->res_stats[i], count[i]);
389
390 if (verbose > 0) {
391 fprintf(config->output, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
392 perf_evsel__name(counter), count[0], count[1], count[2]);
393 }
394
395 /*
396 * Save the full runtime - to allow normalization during printout:
397 */
398 perf_stat__update_shadow_stats(counter, *count, 0, &rt_stat);
399
400 return 0;
401}
402
403int perf_event__process_stat_event(struct perf_session *session,
404 union perf_event *event)
405{
406 struct perf_counts_values count;
407 struct perf_record_stat *st = &event->stat;
408 struct evsel *counter;
409
410 count.val = st->val;
411 count.ena = st->ena;
412 count.run = st->run;
413
414 counter = perf_evlist__id2evsel(session->evlist, st->id);
415 if (!counter) {
416 pr_err("Failed to resolve counter for stat event.\n");
417 return -EINVAL;
418 }
419
420 *perf_counts(counter->counts, st->cpu, st->thread) = count;
421 counter->supported = true;
422 return 0;
423}
424
425size_t perf_event__fprintf_stat(union perf_event *event, FILE *fp)
426{
427 struct perf_record_stat *st = (struct perf_record_stat *)event;
428 size_t ret;
429
430 ret = fprintf(fp, "\n... id %" PRI_lu64 ", cpu %d, thread %d\n",
431 st->id, st->cpu, st->thread);
432 ret += fprintf(fp, "... value %" PRI_lu64 ", enabled %" PRI_lu64 ", running %" PRI_lu64 "\n",
433 st->val, st->ena, st->run);
434
435 return ret;
436}
437
438size_t perf_event__fprintf_stat_round(union perf_event *event, FILE *fp)
439{
440 struct perf_record_stat_round *rd = (struct perf_record_stat_round *)event;
441 size_t ret;
442
443 ret = fprintf(fp, "\n... time %" PRI_lu64 ", type %s\n", rd->time,
444 rd->type == PERF_STAT_ROUND_TYPE__FINAL ? "FINAL" : "INTERVAL");
445
446 return ret;
447}
448
449size_t perf_event__fprintf_stat_config(union perf_event *event, FILE *fp)
450{
451 struct perf_stat_config sc;
452 size_t ret;
453
454 perf_event__read_stat_config(&sc, &event->stat_config);
455
456 ret = fprintf(fp, "\n");
457 ret += fprintf(fp, "... aggr_mode %d\n", sc.aggr_mode);
458 ret += fprintf(fp, "... scale %d\n", sc.scale);
459 ret += fprintf(fp, "... interval %u\n", sc.interval);
460
461 return ret;
462}
463
464int create_perf_stat_counter(struct evsel *evsel,
465 struct perf_stat_config *config,
466 struct target *target)
467{
468 struct perf_event_attr *attr = &evsel->core.attr;
469 struct evsel *leader = evsel->leader;
470
471 attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
472 PERF_FORMAT_TOTAL_TIME_RUNNING;
473
474 /*
475 * The event is part of non trivial group, let's enable
476 * the group read (for leader) and ID retrieval for all
477 * members.
478 */
479 if (leader->core.nr_members > 1)
480 attr->read_format |= PERF_FORMAT_ID|PERF_FORMAT_GROUP;
481
482 attr->inherit = !config->no_inherit;
483
484 /*
485 * Some events get initialized with sample_(period/type) set,
486 * like tracepoints. Clear it up for counting.
487 */
488 attr->sample_period = 0;
489
490 if (config->identifier)
491 attr->sample_type = PERF_SAMPLE_IDENTIFIER;
492
493 /*
494 * Disabling all counters initially, they will be enabled
495 * either manually by us or by kernel via enable_on_exec
496 * set later.
497 */
498 if (perf_evsel__is_group_leader(evsel)) {
499 attr->disabled = 1;
500
501 /*
502 * In case of initial_delay we enable tracee
503 * events manually.
504 */
505 if (target__none(target) && !config->initial_delay)
506 attr->enable_on_exec = 1;
507 }
508
509 if (target__has_cpu(target) && !target__has_per_thread(target))
510 return perf_evsel__open_per_cpu(evsel, evsel__cpus(evsel));
511
512 return perf_evsel__open_per_thread(evsel, evsel->core.threads);
513}