xref: /openbmc/linux/tools/perf/util/stat-display.c (revision cbafa54a) 
1 #include <stdlib.h>
2 #include <stdio.h>
3 #include <inttypes.h>
4 #include <linux/string.h>
5 #include <linux/time64.h>
6 #include <math.h>
7 #include "color.h"
8 #include "counts.h"
9 #include "evlist.h"
10 #include "evsel.h"
11 #include "stat.h"
12 #include "top.h"
13 #include "thread_map.h"
14 #include "cpumap.h"
15 #include "string2.h"
16 #include <linux/ctype.h>
17 #include "cgroup.h"
18 #include <api/fs/fs.h>
19 #include "util.h"
20 #include "iostat.h"
21 #include "pmu-hybrid.h"
22 
23 #define CNTR_NOT_SUPPORTED	"<not supported>"
24 #define CNTR_NOT_COUNTED	"<not counted>"
25 
26 static void print_running(struct perf_stat_config *config,
27 			  u64 run, u64 ena)
28 {
29 	if (config->csv_output) {
30 		fprintf(config->output, "%s%" PRIu64 "%s%.2f",
31 					config->csv_sep,
32 					run,
33 					config->csv_sep,
34 					ena ? 100.0 * run / ena : 100.0);
35 	} else if (run != ena) {
36 		fprintf(config->output, "  (%.2f%%)", 100.0 * run / ena);
37 	}
38 }
39 
40 static void print_noise_pct(struct perf_stat_config *config,
41 			    double total, double avg)
42 {
43 	double pct = rel_stddev_stats(total, avg);
44 
45 	if (config->csv_output)
46 		fprintf(config->output, "%s%.2f%%", config->csv_sep, pct);
47 	else if (pct)
48 		fprintf(config->output, "  ( +-%6.2f%% )", pct);
49 }
50 
51 static void print_noise(struct perf_stat_config *config,
52 			struct evsel *evsel, double avg)
53 {
54 	struct perf_stat_evsel *ps;
55 
56 	if (config->run_count == 1)
57 		return;
58 
59 	ps = evsel->stats;
60 	print_noise_pct(config, stddev_stats(&ps->res_stats[0]), avg);
61 }
62 
63 static void print_cgroup(struct perf_stat_config *config, struct evsel *evsel)
64 {
65 	if (nr_cgroups) {
66 		const char *cgrp_name = evsel->cgrp ? evsel->cgrp->name  : "";
67 		fprintf(config->output, "%s%s", config->csv_sep, cgrp_name);
68 	}
69 }
70 
71 
72 static void aggr_printout(struct perf_stat_config *config,
73 			  struct evsel *evsel, struct aggr_cpu_id id, int nr)
74 {
75 	switch (config->aggr_mode) {
76 	case AGGR_CORE:
77 		fprintf(config->output, "S%d-D%d-C%*d%s%*d%s",
78 			id.socket,
79 			id.die,
80 			config->csv_output ? 0 : -8,
81 			id.core,
82 			config->csv_sep,
83 			config->csv_output ? 0 : 4,
84 			nr,
85 			config->csv_sep);
86 		break;
87 	case AGGR_DIE:
88 		fprintf(config->output, "S%d-D%*d%s%*d%s",
89 			id.socket,
90 			config->csv_output ? 0 : -8,
91 			id.die,
92 			config->csv_sep,
93 			config->csv_output ? 0 : 4,
94 			nr,
95 			config->csv_sep);
96 		break;
97 	case AGGR_SOCKET:
98 		fprintf(config->output, "S%*d%s%*d%s",
99 			config->csv_output ? 0 : -5,
100 			id.socket,
101 			config->csv_sep,
102 			config->csv_output ? 0 : 4,
103 			nr,
104 			config->csv_sep);
105 			break;
106 	case AGGR_NODE:
107 		fprintf(config->output, "N%*d%s%*d%s",
108 			config->csv_output ? 0 : -5,
109 			id.node,
110 			config->csv_sep,
111 			config->csv_output ? 0 : 4,
112 			nr,
113 			config->csv_sep);
114 			break;
115 	case AGGR_NONE:
116 		if (evsel->percore && !config->percore_show_thread) {
117 			fprintf(config->output, "S%d-D%d-C%*d%s",
118 				id.socket,
119 				id.die,
120 				config->csv_output ? 0 : -3,
121 				id.core, config->csv_sep);
122 		} else if (id.core > -1) {
123 			fprintf(config->output, "CPU%*d%s",
124 				config->csv_output ? 0 : -7,
125 				evsel__cpus(evsel)->map[id.core],
126 				config->csv_sep);
127 		}
128 		break;
129 	case AGGR_THREAD:
130 		fprintf(config->output, "%*s-%*d%s",
131 			config->csv_output ? 0 : 16,
132 			perf_thread_map__comm(evsel->core.threads, id.thread),
133 			config->csv_output ? 0 : -8,
134 			perf_thread_map__pid(evsel->core.threads, id.thread),
135 			config->csv_sep);
136 		break;
137 	case AGGR_GLOBAL:
138 	case AGGR_UNSET:
139 	default:
140 		break;
141 	}
142 }
143 
144 struct outstate {
145 	FILE *fh;
146 	bool newline;
147 	const char *prefix;
148 	int  nfields;
149 	int  nr;
150 	struct aggr_cpu_id id;
151 	struct evsel *evsel;
152 };
153 
154 #define METRIC_LEN  35
155 
156 static void new_line_std(struct perf_stat_config *config __maybe_unused,
157 			 void *ctx)
158 {
159 	struct outstate *os = ctx;
160 
161 	os->newline = true;
162 }
163 
164 static void do_new_line_std(struct perf_stat_config *config,
165 			    struct outstate *os)
166 {
167 	fputc('\n', os->fh);
168 	fputs(os->prefix, os->fh);
169 	aggr_printout(config, os->evsel, os->id, os->nr);
170 	if (config->aggr_mode == AGGR_NONE)
171 		fprintf(os->fh, "        ");
172 	fprintf(os->fh, "                                                 ");
173 }
174 
175 static void print_metric_std(struct perf_stat_config *config,
176 			     void *ctx, const char *color, const char *fmt,
177 			     const char *unit, double val)
178 {
179 	struct outstate *os = ctx;
180 	FILE *out = os->fh;
181 	int n;
182 	bool newline = os->newline;
183 
184 	os->newline = false;
185 
186 	if (unit == NULL || fmt == NULL) {
187 		fprintf(out, "%-*s", METRIC_LEN, "");
188 		return;
189 	}
190 
191 	if (newline)
192 		do_new_line_std(config, os);
193 
194 	n = fprintf(out, " # ");
195 	if (color)
196 		n += color_fprintf(out, color, fmt, val);
197 	else
198 		n += fprintf(out, fmt, val);
199 	fprintf(out, " %-*s", METRIC_LEN - n - 1, unit);
200 }
201 
202 static void new_line_csv(struct perf_stat_config *config, void *ctx)
203 {
204 	struct outstate *os = ctx;
205 	int i;
206 
207 	fputc('\n', os->fh);
208 	if (os->prefix)
209 		fprintf(os->fh, "%s%s", os->prefix, config->csv_sep);
210 	aggr_printout(config, os->evsel, os->id, os->nr);
211 	for (i = 0; i < os->nfields; i++)
212 		fputs(config->csv_sep, os->fh);
213 }
214 
215 static void print_metric_csv(struct perf_stat_config *config __maybe_unused,
216 			     void *ctx,
217 			     const char *color __maybe_unused,
218 			     const char *fmt, const char *unit, double val)
219 {
220 	struct outstate *os = ctx;
221 	FILE *out = os->fh;
222 	char buf[64], *vals, *ends;
223 
224 	if (unit == NULL || fmt == NULL) {
225 		fprintf(out, "%s%s", config->csv_sep, config->csv_sep);
226 		return;
227 	}
228 	snprintf(buf, sizeof(buf), fmt, val);
229 	ends = vals = skip_spaces(buf);
230 	while (isdigit(*ends) || *ends == '.')
231 		ends++;
232 	*ends = 0;
233 	fprintf(out, "%s%s%s%s", config->csv_sep, vals, config->csv_sep, skip_spaces(unit));
234 }
235 
236 /* Filter out some columns that don't work well in metrics only mode */
237 
238 static bool valid_only_metric(const char *unit)
239 {
240 	if (!unit)
241 		return false;
242 	if (strstr(unit, "/sec") ||
243 	    strstr(unit, "CPUs utilized"))
244 		return false;
245 	return true;
246 }
247 
248 static const char *fixunit(char *buf, struct evsel *evsel,
249 			   const char *unit)
250 {
251 	if (!strncmp(unit, "of all", 6)) {
252 		snprintf(buf, 1024, "%s %s", evsel__name(evsel),
253 			 unit);
254 		return buf;
255 	}
256 	return unit;
257 }
258 
259 static void print_metric_only(struct perf_stat_config *config,
260 			      void *ctx, const char *color, const char *fmt,
261 			      const char *unit, double val)
262 {
263 	struct outstate *os = ctx;
264 	FILE *out = os->fh;
265 	char buf[1024], str[1024];
266 	unsigned mlen = config->metric_only_len;
267 
268 	if (!valid_only_metric(unit))
269 		return;
270 	unit = fixunit(buf, os->evsel, unit);
271 	if (mlen < strlen(unit))
272 		mlen = strlen(unit) + 1;
273 
274 	if (color)
275 		mlen += strlen(color) + sizeof(PERF_COLOR_RESET) - 1;
276 
277 	color_snprintf(str, sizeof(str), color ?: "", fmt, val);
278 	fprintf(out, "%*s ", mlen, str);
279 }
280 
281 static void print_metric_only_csv(struct perf_stat_config *config __maybe_unused,
282 				  void *ctx, const char *color __maybe_unused,
283 				  const char *fmt,
284 				  const char *unit, double val)
285 {
286 	struct outstate *os = ctx;
287 	FILE *out = os->fh;
288 	char buf[64], *vals, *ends;
289 	char tbuf[1024];
290 
291 	if (!valid_only_metric(unit))
292 		return;
293 	unit = fixunit(tbuf, os->evsel, unit);
294 	snprintf(buf, sizeof buf, fmt, val);
295 	ends = vals = skip_spaces(buf);
296 	while (isdigit(*ends) || *ends == '.')
297 		ends++;
298 	*ends = 0;
299 	fprintf(out, "%s%s", vals, config->csv_sep);
300 }
301 
302 static void new_line_metric(struct perf_stat_config *config __maybe_unused,
303 			    void *ctx __maybe_unused)
304 {
305 }
306 
307 static void print_metric_header(struct perf_stat_config *config,
308 				void *ctx, const char *color __maybe_unused,
309 				const char *fmt __maybe_unused,
310 				const char *unit, double val __maybe_unused)
311 {
312 	struct outstate *os = ctx;
313 	char tbuf[1024];
314 
315 	/* In case of iostat, print metric header for first root port only */
316 	if (config->iostat_run &&
317 	    os->evsel->priv != os->evsel->evlist->selected->priv)
318 		return;
319 
320 	if (!valid_only_metric(unit))
321 		return;
322 	unit = fixunit(tbuf, os->evsel, unit);
323 	if (config->csv_output)
324 		fprintf(os->fh, "%s%s", unit, config->csv_sep);
325 	else
326 		fprintf(os->fh, "%*s ", config->metric_only_len, unit);
327 }
328 
329 static int first_shadow_cpu(struct perf_stat_config *config,
330 			    struct evsel *evsel, struct aggr_cpu_id id)
331 {
332 	struct evlist *evlist = evsel->evlist;
333 	int i;
334 
335 	if (config->aggr_mode == AGGR_NONE)
336 		return id.core;
337 
338 	if (!config->aggr_get_id)
339 		return 0;
340 
341 	for (i = 0; i < evsel__nr_cpus(evsel); i++) {
342 		int cpu2 = evsel__cpus(evsel)->map[i];
343 
344 		if (cpu_map__compare_aggr_cpu_id(
345 					config->aggr_get_id(config, evlist->core.cpus, cpu2),
346 					id)) {
347 			return cpu2;
348 		}
349 	}
350 	return 0;
351 }
352 
353 static void abs_printout(struct perf_stat_config *config,
354 			 struct aggr_cpu_id id, int nr, struct evsel *evsel, double avg)
355 {
356 	FILE *output = config->output;
357 	double sc =  evsel->scale;
358 	const char *fmt;
359 
360 	if (config->csv_output) {
361 		fmt = floor(sc) != sc ?  "%.2f%s" : "%.0f%s";
362 	} else {
363 		if (config->big_num)
364 			fmt = floor(sc) != sc ? "%'18.2f%s" : "%'18.0f%s";
365 		else
366 			fmt = floor(sc) != sc ? "%18.2f%s" : "%18.0f%s";
367 	}
368 
369 	aggr_printout(config, evsel, id, nr);
370 
371 	fprintf(output, fmt, avg, config->csv_sep);
372 
373 	if (evsel->unit)
374 		fprintf(output, "%-*s%s",
375 			config->csv_output ? 0 : config->unit_width,
376 			evsel->unit, config->csv_sep);
377 
378 	fprintf(output, "%-*s", config->csv_output ? 0 : 25, evsel__name(evsel));
379 
380 	print_cgroup(config, evsel);
381 }
382 
383 static bool is_mixed_hw_group(struct evsel *counter)
384 {
385 	struct evlist *evlist = counter->evlist;
386 	u32 pmu_type = counter->core.attr.type;
387 	struct evsel *pos;
388 
389 	if (counter->core.nr_members < 2)
390 		return false;
391 
392 	evlist__for_each_entry(evlist, pos) {
393 		/* software events can be part of any hardware group */
394 		if (pos->core.attr.type == PERF_TYPE_SOFTWARE)
395 			continue;
396 		if (pmu_type == PERF_TYPE_SOFTWARE) {
397 			pmu_type = pos->core.attr.type;
398 			continue;
399 		}
400 		if (pmu_type != pos->core.attr.type)
401 			return true;
402 	}
403 
404 	return false;
405 }
406 
407 static void printout(struct perf_stat_config *config, struct aggr_cpu_id id, int nr,
408 		     struct evsel *counter, double uval,
409 		     char *prefix, u64 run, u64 ena, double noise,
410 		     struct runtime_stat *st)
411 {
412 	struct perf_stat_output_ctx out;
413 	struct outstate os = {
414 		.fh = config->output,
415 		.prefix = prefix ? prefix : "",
416 		.id = id,
417 		.nr = nr,
418 		.evsel = counter,
419 	};
420 	print_metric_t pm = print_metric_std;
421 	new_line_t nl;
422 
423 	if (config->metric_only) {
424 		nl = new_line_metric;
425 		if (config->csv_output)
426 			pm = print_metric_only_csv;
427 		else
428 			pm = print_metric_only;
429 	} else
430 		nl = new_line_std;
431 
432 	if (config->csv_output && !config->metric_only) {
433 		static int aggr_fields[] = {
434 			[AGGR_GLOBAL] = 0,
435 			[AGGR_THREAD] = 1,
436 			[AGGR_NONE] = 1,
437 			[AGGR_SOCKET] = 2,
438 			[AGGR_DIE] = 2,
439 			[AGGR_CORE] = 2,
440 		};
441 
442 		pm = print_metric_csv;
443 		nl = new_line_csv;
444 		os.nfields = 3;
445 		os.nfields += aggr_fields[config->aggr_mode];
446 		if (counter->cgrp)
447 			os.nfields++;
448 	}
449 
450 	if (!config->no_csv_summary && config->csv_output &&
451 	    config->summary && !config->interval) {
452 		fprintf(config->output, "%16s%s", "summary", config->csv_sep);
453 	}
454 
455 	if (run == 0 || ena == 0 || counter->counts->scaled == -1) {
456 		if (config->metric_only) {
457 			pm(config, &os, NULL, "", "", 0);
458 			return;
459 		}
460 		aggr_printout(config, counter, id, nr);
461 
462 		fprintf(config->output, "%*s%s",
463 			config->csv_output ? 0 : 18,
464 			counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
465 			config->csv_sep);
466 
467 		if (counter->supported) {
468 			config->print_free_counters_hint = 1;
469 			if (is_mixed_hw_group(counter))
470 				config->print_mixed_hw_group_error = 1;
471 		}
472 
473 		fprintf(config->output, "%-*s%s",
474 			config->csv_output ? 0 : config->unit_width,
475 			counter->unit, config->csv_sep);
476 
477 		fprintf(config->output, "%*s",
478 			config->csv_output ? 0 : -25, evsel__name(counter));
479 
480 		print_cgroup(config, counter);
481 
482 		if (!config->csv_output)
483 			pm(config, &os, NULL, NULL, "", 0);
484 		print_noise(config, counter, noise);
485 		print_running(config, run, ena);
486 		if (config->csv_output)
487 			pm(config, &os, NULL, NULL, "", 0);
488 		return;
489 	}
490 
491 	if (!config->metric_only)
492 		abs_printout(config, id, nr, counter, uval);
493 
494 	out.print_metric = pm;
495 	out.new_line = nl;
496 	out.ctx = &os;
497 	out.force_header = false;
498 
499 	if (config->csv_output && !config->metric_only) {
500 		print_noise(config, counter, noise);
501 		print_running(config, run, ena);
502 	}
503 
504 	perf_stat__print_shadow_stats(config, counter, uval,
505 				first_shadow_cpu(config, counter, id),
506 				&out, &config->metric_events, st);
507 	if (!config->csv_output && !config->metric_only) {
508 		print_noise(config, counter, noise);
509 		print_running(config, run, ena);
510 	}
511 }
512 
513 static void aggr_update_shadow(struct perf_stat_config *config,
514 			       struct evlist *evlist)
515 {
516 	int cpu, s;
517 	struct aggr_cpu_id s2, id;
518 	u64 val;
519 	struct evsel *counter;
520 
521 	for (s = 0; s < config->aggr_map->nr; s++) {
522 		id = config->aggr_map->map[s];
523 		evlist__for_each_entry(evlist, counter) {
524 			val = 0;
525 			for (cpu = 0; cpu < evsel__nr_cpus(counter); cpu++) {
526 				s2 = config->aggr_get_id(config, evlist->core.cpus, cpu);
527 				if (!cpu_map__compare_aggr_cpu_id(s2, id))
528 					continue;
529 				val += perf_counts(counter->counts, cpu, 0)->val;
530 			}
531 			perf_stat__update_shadow_stats(counter, val,
532 					first_shadow_cpu(config, counter, id),
533 					&rt_stat);
534 		}
535 	}
536 }
537 
538 static void uniquify_event_name(struct evsel *counter)
539 {
540 	char *new_name;
541 	char *config;
542 	int ret = 0;
543 
544 	if (counter->uniquified_name ||
545 	    !counter->pmu_name || !strncmp(counter->name, counter->pmu_name,
546 					   strlen(counter->pmu_name)))
547 		return;
548 
549 	config = strchr(counter->name, '/');
550 	if (config) {
551 		if (asprintf(&new_name,
552 			     "%s%s", counter->pmu_name, config) > 0) {
553 			free(counter->name);
554 			counter->name = new_name;
555 		}
556 	} else {
557 		if (perf_pmu__has_hybrid()) {
558 			if (!counter->use_config_name) {
559 				ret = asprintf(&new_name, "%s/%s/",
560 					       counter->pmu_name, counter->name);
561 			}
562 		} else {
563 			ret = asprintf(&new_name, "%s [%s]",
564 				       counter->name, counter->pmu_name);
565 		}
566 
567 		if (ret) {
568 			free(counter->name);
569 			counter->name = new_name;
570 		}
571 	}
572 
573 	counter->uniquified_name = true;
574 }
575 
576 static void collect_all_aliases(struct perf_stat_config *config, struct evsel *counter,
577 			    void (*cb)(struct perf_stat_config *config, struct evsel *counter, void *data,
578 				       bool first),
579 			    void *data)
580 {
581 	struct evlist *evlist = counter->evlist;
582 	struct evsel *alias;
583 
584 	alias = list_prepare_entry(counter, &(evlist->core.entries), core.node);
585 	list_for_each_entry_continue (alias, &evlist->core.entries, core.node) {
586 		if (strcmp(evsel__name(alias), evsel__name(counter)) ||
587 		    alias->scale != counter->scale ||
588 		    alias->cgrp != counter->cgrp ||
589 		    strcmp(alias->unit, counter->unit) ||
590 		    evsel__is_clock(alias) != evsel__is_clock(counter) ||
591 		    !strcmp(alias->pmu_name, counter->pmu_name))
592 			break;
593 		alias->merged_stat = true;
594 		cb(config, alias, data, false);
595 	}
596 }
597 
598 static bool collect_data(struct perf_stat_config *config, struct evsel *counter,
599 			    void (*cb)(struct perf_stat_config *config, struct evsel *counter, void *data,
600 				       bool first),
601 			    void *data)
602 {
603 	if (counter->merged_stat)
604 		return false;
605 	cb(config, counter, data, true);
606 	if (config->no_merge)
607 		uniquify_event_name(counter);
608 	else if (counter->auto_merge_stats)
609 		collect_all_aliases(config, counter, cb, data);
610 	return true;
611 }
612 
613 struct aggr_data {
614 	u64 ena, run, val;
615 	struct aggr_cpu_id id;
616 	int nr;
617 	int cpu;
618 };
619 
620 static void aggr_cb(struct perf_stat_config *config,
621 		    struct evsel *counter, void *data, bool first)
622 {
623 	struct aggr_data *ad = data;
624 	int cpu;
625 	struct aggr_cpu_id s2;
626 
627 	for (cpu = 0; cpu < evsel__nr_cpus(counter); cpu++) {
628 		struct perf_counts_values *counts;
629 
630 		s2 = config->aggr_get_id(config, evsel__cpus(counter), cpu);
631 		if (!cpu_map__compare_aggr_cpu_id(s2, ad->id))
632 			continue;
633 		if (first)
634 			ad->nr++;
635 		counts = perf_counts(counter->counts, cpu, 0);
636 		/*
637 		 * When any result is bad, make them all to give
638 		 * consistent output in interval mode.
639 		 */
640 		if (counts->ena == 0 || counts->run == 0 ||
641 		    counter->counts->scaled == -1) {
642 			ad->ena = 0;
643 			ad->run = 0;
644 			break;
645 		}
646 		ad->val += counts->val;
647 		ad->ena += counts->ena;
648 		ad->run += counts->run;
649 	}
650 }
651 
652 static void print_counter_aggrdata(struct perf_stat_config *config,
653 				   struct evsel *counter, int s,
654 				   char *prefix, bool metric_only,
655 				   bool *first, int cpu)
656 {
657 	struct aggr_data ad;
658 	FILE *output = config->output;
659 	u64 ena, run, val;
660 	int nr;
661 	struct aggr_cpu_id id;
662 	double uval;
663 
664 	ad.id = id = config->aggr_map->map[s];
665 	ad.val = ad.ena = ad.run = 0;
666 	ad.nr = 0;
667 	if (!collect_data(config, counter, aggr_cb, &ad))
668 		return;
669 
670 	if (perf_pmu__has_hybrid() && ad.ena == 0)
671 		return;
672 
673 	nr = ad.nr;
674 	ena = ad.ena;
675 	run = ad.run;
676 	val = ad.val;
677 	if (*first && metric_only) {
678 		*first = false;
679 		aggr_printout(config, counter, id, nr);
680 	}
681 	if (prefix && !metric_only)
682 		fprintf(output, "%s", prefix);
683 
684 	uval = val * counter->scale;
685 	if (cpu != -1) {
686 		id = cpu_map__empty_aggr_cpu_id();
687 		id.core = cpu;
688 	}
689 	printout(config, id, nr, counter, uval,
690 		 prefix, run, ena, 1.0, &rt_stat);
691 	if (!metric_only)
692 		fputc('\n', output);
693 }
694 
695 static void print_aggr(struct perf_stat_config *config,
696 		       struct evlist *evlist,
697 		       char *prefix)
698 {
699 	bool metric_only = config->metric_only;
700 	FILE *output = config->output;
701 	struct evsel *counter;
702 	int s;
703 	bool first;
704 
705 	if (!config->aggr_map || !config->aggr_get_id)
706 		return;
707 
708 	aggr_update_shadow(config, evlist);
709 
710 	/*
711 	 * With metric_only everything is on a single line.
712 	 * Without each counter has its own line.
713 	 */
714 	for (s = 0; s < config->aggr_map->nr; s++) {
715 		if (prefix && metric_only)
716 			fprintf(output, "%s", prefix);
717 
718 		first = true;
719 		evlist__for_each_entry(evlist, counter) {
720 			print_counter_aggrdata(config, counter, s,
721 					       prefix, metric_only,
722 					       &first, -1);
723 		}
724 		if (metric_only)
725 			fputc('\n', output);
726 	}
727 }
728 
729 static int cmp_val(const void *a, const void *b)
730 {
731 	return ((struct perf_aggr_thread_value *)b)->val -
732 		((struct perf_aggr_thread_value *)a)->val;
733 }
734 
735 static struct perf_aggr_thread_value *sort_aggr_thread(
736 					struct evsel *counter,
737 					int nthreads, int ncpus,
738 					int *ret,
739 					struct target *_target)
740 {
741 	int cpu, thread, i = 0;
742 	double uval;
743 	struct perf_aggr_thread_value *buf;
744 
745 	buf = calloc(nthreads, sizeof(struct perf_aggr_thread_value));
746 	if (!buf)
747 		return NULL;
748 
749 	for (thread = 0; thread < nthreads; thread++) {
750 		u64 ena = 0, run = 0, val = 0;
751 
752 		for (cpu = 0; cpu < ncpus; cpu++) {
753 			val += perf_counts(counter->counts, cpu, thread)->val;
754 			ena += perf_counts(counter->counts, cpu, thread)->ena;
755 			run += perf_counts(counter->counts, cpu, thread)->run;
756 		}
757 
758 		uval = val * counter->scale;
759 
760 		/*
761 		 * Skip value 0 when enabling --per-thread globally,
762 		 * otherwise too many 0 output.
763 		 */
764 		if (uval == 0.0 && target__has_per_thread(_target))
765 			continue;
766 
767 		buf[i].counter = counter;
768 		buf[i].id = cpu_map__empty_aggr_cpu_id();
769 		buf[i].id.thread = thread;
770 		buf[i].uval = uval;
771 		buf[i].val = val;
772 		buf[i].run = run;
773 		buf[i].ena = ena;
774 		i++;
775 	}
776 
777 	qsort(buf, i, sizeof(struct perf_aggr_thread_value), cmp_val);
778 
779 	if (ret)
780 		*ret = i;
781 
782 	return buf;
783 }
784 
785 static void print_aggr_thread(struct perf_stat_config *config,
786 			      struct target *_target,
787 			      struct evsel *counter, char *prefix)
788 {
789 	FILE *output = config->output;
790 	int nthreads = perf_thread_map__nr(counter->core.threads);
791 	int ncpus = perf_cpu_map__nr(counter->core.cpus);
792 	int thread, sorted_threads;
793 	struct aggr_cpu_id id;
794 	struct perf_aggr_thread_value *buf;
795 
796 	buf = sort_aggr_thread(counter, nthreads, ncpus, &sorted_threads, _target);
797 	if (!buf) {
798 		perror("cannot sort aggr thread");
799 		return;
800 	}
801 
802 	for (thread = 0; thread < sorted_threads; thread++) {
803 		if (prefix)
804 			fprintf(output, "%s", prefix);
805 
806 		id = buf[thread].id;
807 		if (config->stats)
808 			printout(config, id, 0, buf[thread].counter, buf[thread].uval,
809 				 prefix, buf[thread].run, buf[thread].ena, 1.0,
810 				 &config->stats[id.thread]);
811 		else
812 			printout(config, id, 0, buf[thread].counter, buf[thread].uval,
813 				 prefix, buf[thread].run, buf[thread].ena, 1.0,
814 				 &rt_stat);
815 		fputc('\n', output);
816 	}
817 
818 	free(buf);
819 }
820 
821 struct caggr_data {
822 	double avg, avg_enabled, avg_running;
823 };
824 
825 static void counter_aggr_cb(struct perf_stat_config *config __maybe_unused,
826 			    struct evsel *counter, void *data,
827 			    bool first __maybe_unused)
828 {
829 	struct caggr_data *cd = data;
830 	struct perf_stat_evsel *ps = counter->stats;
831 
832 	cd->avg += avg_stats(&ps->res_stats[0]);
833 	cd->avg_enabled += avg_stats(&ps->res_stats[1]);
834 	cd->avg_running += avg_stats(&ps->res_stats[2]);
835 }
836 
837 /*
838  * Print out the results of a single counter:
839  * aggregated counts in system-wide mode
840  */
841 static void print_counter_aggr(struct perf_stat_config *config,
842 			       struct evsel *counter, char *prefix)
843 {
844 	bool metric_only = config->metric_only;
845 	FILE *output = config->output;
846 	double uval;
847 	struct caggr_data cd = { .avg = 0.0 };
848 
849 	if (!collect_data(config, counter, counter_aggr_cb, &cd))
850 		return;
851 
852 	if (prefix && !metric_only)
853 		fprintf(output, "%s", prefix);
854 
855 	uval = cd.avg * counter->scale;
856 	printout(config, cpu_map__empty_aggr_cpu_id(), 0, counter, uval, prefix, cd.avg_running,
857 		 cd.avg_enabled, cd.avg, &rt_stat);
858 	if (!metric_only)
859 		fprintf(output, "\n");
860 }
861 
862 static void counter_cb(struct perf_stat_config *config __maybe_unused,
863 		       struct evsel *counter, void *data,
864 		       bool first __maybe_unused)
865 {
866 	struct aggr_data *ad = data;
867 
868 	ad->val += perf_counts(counter->counts, ad->cpu, 0)->val;
869 	ad->ena += perf_counts(counter->counts, ad->cpu, 0)->ena;
870 	ad->run += perf_counts(counter->counts, ad->cpu, 0)->run;
871 }
872 
873 /*
874  * Print out the results of a single counter:
875  * does not use aggregated count in system-wide
876  */
877 static void print_counter(struct perf_stat_config *config,
878 			  struct evsel *counter, char *prefix)
879 {
880 	FILE *output = config->output;
881 	u64 ena, run, val;
882 	double uval;
883 	int cpu;
884 	struct aggr_cpu_id id;
885 
886 	for (cpu = 0; cpu < evsel__nr_cpus(counter); cpu++) {
887 		struct aggr_data ad = { .cpu = cpu };
888 
889 		if (!collect_data(config, counter, counter_cb, &ad))
890 			return;
891 		val = ad.val;
892 		ena = ad.ena;
893 		run = ad.run;
894 
895 		if (prefix)
896 			fprintf(output, "%s", prefix);
897 
898 		uval = val * counter->scale;
899 		id = cpu_map__empty_aggr_cpu_id();
900 		id.core = cpu;
901 		printout(config, id, 0, counter, uval, prefix,
902 			 run, ena, 1.0, &rt_stat);
903 
904 		fputc('\n', output);
905 	}
906 }
907 
908 static void print_no_aggr_metric(struct perf_stat_config *config,
909 				 struct evlist *evlist,
910 				 char *prefix)
911 {
912 	int cpu;
913 	int nrcpus = 0;
914 	struct evsel *counter;
915 	u64 ena, run, val;
916 	double uval;
917 	struct aggr_cpu_id id;
918 
919 	nrcpus = evlist->core.cpus->nr;
920 	for (cpu = 0; cpu < nrcpus; cpu++) {
921 		bool first = true;
922 
923 		if (prefix)
924 			fputs(prefix, config->output);
925 		evlist__for_each_entry(evlist, counter) {
926 			id = cpu_map__empty_aggr_cpu_id();
927 			id.core = cpu;
928 			if (first) {
929 				aggr_printout(config, counter, id, 0);
930 				first = false;
931 			}
932 			val = perf_counts(counter->counts, cpu, 0)->val;
933 			ena = perf_counts(counter->counts, cpu, 0)->ena;
934 			run = perf_counts(counter->counts, cpu, 0)->run;
935 
936 			uval = val * counter->scale;
937 			printout(config, id, 0, counter, uval, prefix,
938 				 run, ena, 1.0, &rt_stat);
939 		}
940 		fputc('\n', config->output);
941 	}
942 }
943 
944 static int aggr_header_lens[] = {
945 	[AGGR_CORE] = 24,
946 	[AGGR_DIE] = 18,
947 	[AGGR_SOCKET] = 12,
948 	[AGGR_NONE] = 6,
949 	[AGGR_THREAD] = 24,
950 	[AGGR_GLOBAL] = 0,
951 };
952 
953 static const char *aggr_header_csv[] = {
954 	[AGGR_CORE] 	= 	"core,cpus,",
955 	[AGGR_DIE] 	= 	"die,cpus",
956 	[AGGR_SOCKET] 	= 	"socket,cpus",
957 	[AGGR_NONE] 	= 	"cpu,",
958 	[AGGR_THREAD] 	= 	"comm-pid,",
959 	[AGGR_GLOBAL] 	=	""
960 };
961 
962 static void print_metric_headers(struct perf_stat_config *config,
963 				 struct evlist *evlist,
964 				 const char *prefix, bool no_indent)
965 {
966 	struct perf_stat_output_ctx out;
967 	struct evsel *counter;
968 	struct outstate os = {
969 		.fh = config->output
970 	};
971 
972 	if (prefix)
973 		fprintf(config->output, "%s", prefix);
974 
975 	if (!config->csv_output && !no_indent)
976 		fprintf(config->output, "%*s",
977 			aggr_header_lens[config->aggr_mode], "");
978 	if (config->csv_output) {
979 		if (config->interval)
980 			fputs("time,", config->output);
981 		if (!config->iostat_run)
982 			fputs(aggr_header_csv[config->aggr_mode], config->output);
983 	}
984 	if (config->iostat_run)
985 		iostat_print_header_prefix(config);
986 
987 	/* Print metrics headers only */
988 	evlist__for_each_entry(evlist, counter) {
989 		os.evsel = counter;
990 		out.ctx = &os;
991 		out.print_metric = print_metric_header;
992 		out.new_line = new_line_metric;
993 		out.force_header = true;
994 		perf_stat__print_shadow_stats(config, counter, 0,
995 					      0,
996 					      &out,
997 					      &config->metric_events,
998 					      &rt_stat);
999 	}
1000 	fputc('\n', config->output);
1001 }
1002 
1003 static void print_interval(struct perf_stat_config *config,
1004 			   struct evlist *evlist,
1005 			   char *prefix, struct timespec *ts)
1006 {
1007 	bool metric_only = config->metric_only;
1008 	unsigned int unit_width = config->unit_width;
1009 	FILE *output = config->output;
1010 	static int num_print_interval;
1011 
1012 	if (config->interval_clear)
1013 		puts(CONSOLE_CLEAR);
1014 
1015 	if (!config->iostat_run)
1016 		sprintf(prefix, "%6lu.%09lu%s", (unsigned long) ts->tv_sec, ts->tv_nsec, config->csv_sep);
1017 
1018 	if ((num_print_interval == 0 && !config->csv_output) || config->interval_clear) {
1019 		switch (config->aggr_mode) {
1020 		case AGGR_NODE:
1021 			fprintf(output, "#           time node   cpus");
1022 			if (!metric_only)
1023 				fprintf(output, "             counts %*s events\n", unit_width, "unit");
1024 			break;
1025 		case AGGR_SOCKET:
1026 			fprintf(output, "#           time socket cpus");
1027 			if (!metric_only)
1028 				fprintf(output, "             counts %*s events\n", unit_width, "unit");
1029 			break;
1030 		case AGGR_DIE:
1031 			fprintf(output, "#           time die          cpus");
1032 			if (!metric_only)
1033 				fprintf(output, "             counts %*s events\n", unit_width, "unit");
1034 			break;
1035 		case AGGR_CORE:
1036 			fprintf(output, "#           time core            cpus");
1037 			if (!metric_only)
1038 				fprintf(output, "             counts %*s events\n", unit_width, "unit");
1039 			break;
1040 		case AGGR_NONE:
1041 			fprintf(output, "#           time CPU    ");
1042 			if (!metric_only)
1043 				fprintf(output, "                counts %*s events\n", unit_width, "unit");
1044 			break;
1045 		case AGGR_THREAD:
1046 			fprintf(output, "#           time             comm-pid");
1047 			if (!metric_only)
1048 				fprintf(output, "                  counts %*s events\n", unit_width, "unit");
1049 			break;
1050 		case AGGR_GLOBAL:
1051 		default:
1052 			if (!config->iostat_run) {
1053 				fprintf(output, "#           time");
1054 				if (!metric_only)
1055 					fprintf(output, "             counts %*s events\n", unit_width, "unit");
1056 			}
1057 		case AGGR_UNSET:
1058 			break;
1059 		}
1060 	}
1061 
1062 	if ((num_print_interval == 0 || config->interval_clear) && metric_only)
1063 		print_metric_headers(config, evlist, " ", true);
1064 	if (++num_print_interval == 25)
1065 		num_print_interval = 0;
1066 }
1067 
1068 static void print_header(struct perf_stat_config *config,
1069 			 struct target *_target,
1070 			 int argc, const char **argv)
1071 {
1072 	FILE *output = config->output;
1073 	int i;
1074 
1075 	fflush(stdout);
1076 
1077 	if (!config->csv_output) {
1078 		fprintf(output, "\n");
1079 		fprintf(output, " Performance counter stats for ");
1080 		if (_target->bpf_str)
1081 			fprintf(output, "\'BPF program(s) %s", _target->bpf_str);
1082 		else if (_target->system_wide)
1083 			fprintf(output, "\'system wide");
1084 		else if (_target->cpu_list)
1085 			fprintf(output, "\'CPU(s) %s", _target->cpu_list);
1086 		else if (!target__has_task(_target)) {
1087 			fprintf(output, "\'%s", argv ? argv[0] : "pipe");
1088 			for (i = 1; argv && (i < argc); i++)
1089 				fprintf(output, " %s", argv[i]);
1090 		} else if (_target->pid)
1091 			fprintf(output, "process id \'%s", _target->pid);
1092 		else
1093 			fprintf(output, "thread id \'%s", _target->tid);
1094 
1095 		fprintf(output, "\'");
1096 		if (config->run_count > 1)
1097 			fprintf(output, " (%d runs)", config->run_count);
1098 		fprintf(output, ":\n\n");
1099 	}
1100 }
1101 
1102 static int get_precision(double num)
1103 {
1104 	if (num > 1)
1105 		return 0;
1106 
1107 	return lround(ceil(-log10(num)));
1108 }
1109 
1110 static void print_table(struct perf_stat_config *config,
1111 			FILE *output, int precision, double avg)
1112 {
1113 	char tmp[64];
1114 	int idx, indent = 0;
1115 
1116 	scnprintf(tmp, 64, " %17.*f", precision, avg);
1117 	while (tmp[indent] == ' ')
1118 		indent++;
1119 
1120 	fprintf(output, "%*s# Table of individual measurements:\n", indent, "");
1121 
1122 	for (idx = 0; idx < config->run_count; idx++) {
1123 		double run = (double) config->walltime_run[idx] / NSEC_PER_SEC;
1124 		int h, n = 1 + abs((int) (100.0 * (run - avg)/run) / 5);
1125 
1126 		fprintf(output, " %17.*f (%+.*f) ",
1127 			precision, run, precision, run - avg);
1128 
1129 		for (h = 0; h < n; h++)
1130 			fprintf(output, "#");
1131 
1132 		fprintf(output, "\n");
1133 	}
1134 
1135 	fprintf(output, "\n%*s# Final result:\n", indent, "");
1136 }
1137 
1138 static double timeval2double(struct timeval *t)
1139 {
1140 	return t->tv_sec + (double) t->tv_usec/USEC_PER_SEC;
1141 }
1142 
1143 static void print_footer(struct perf_stat_config *config)
1144 {
1145 	double avg = avg_stats(config->walltime_nsecs_stats) / NSEC_PER_SEC;
1146 	FILE *output = config->output;
1147 
1148 	if (!config->null_run)
1149 		fprintf(output, "\n");
1150 
1151 	if (config->run_count == 1) {
1152 		fprintf(output, " %17.9f seconds time elapsed", avg);
1153 
1154 		if (config->ru_display) {
1155 			double ru_utime = timeval2double(&config->ru_data.ru_utime);
1156 			double ru_stime = timeval2double(&config->ru_data.ru_stime);
1157 
1158 			fprintf(output, "\n\n");
1159 			fprintf(output, " %17.9f seconds user\n", ru_utime);
1160 			fprintf(output, " %17.9f seconds sys\n", ru_stime);
1161 		}
1162 	} else {
1163 		double sd = stddev_stats(config->walltime_nsecs_stats) / NSEC_PER_SEC;
1164 		/*
1165 		 * Display at most 2 more significant
1166 		 * digits than the stddev inaccuracy.
1167 		 */
1168 		int precision = get_precision(sd) + 2;
1169 
1170 		if (config->walltime_run_table)
1171 			print_table(config, output, precision, avg);
1172 
1173 		fprintf(output, " %17.*f +- %.*f seconds time elapsed",
1174 			precision, avg, precision, sd);
1175 
1176 		print_noise_pct(config, sd, avg);
1177 	}
1178 	fprintf(output, "\n\n");
1179 
1180 	if (config->print_free_counters_hint && sysctl__nmi_watchdog_enabled())
1181 		fprintf(output,
1182 "Some events weren't counted. Try disabling the NMI watchdog:\n"
1183 "	echo 0 > /proc/sys/kernel/nmi_watchdog\n"
1184 "	perf stat ...\n"
1185 "	echo 1 > /proc/sys/kernel/nmi_watchdog\n");
1186 
1187 	if (config->print_mixed_hw_group_error)
1188 		fprintf(output,
1189 			"The events in group usually have to be from "
1190 			"the same PMU. Try reorganizing the group.\n");
1191 }
1192 
1193 static void print_percore_thread(struct perf_stat_config *config,
1194 				 struct evsel *counter, char *prefix)
1195 {
1196 	int s;
1197 	struct aggr_cpu_id s2, id;
1198 	bool first = true;
1199 
1200 	for (int i = 0; i < evsel__nr_cpus(counter); i++) {
1201 		s2 = config->aggr_get_id(config, evsel__cpus(counter), i);
1202 		for (s = 0; s < config->aggr_map->nr; s++) {
1203 			id = config->aggr_map->map[s];
1204 			if (cpu_map__compare_aggr_cpu_id(s2, id))
1205 				break;
1206 		}
1207 
1208 		print_counter_aggrdata(config, counter, s,
1209 				       prefix, false,
1210 				       &first, i);
1211 	}
1212 }
1213 
1214 static void print_percore(struct perf_stat_config *config,
1215 			  struct evsel *counter, char *prefix)
1216 {
1217 	bool metric_only = config->metric_only;
1218 	FILE *output = config->output;
1219 	int s;
1220 	bool first = true;
1221 
1222 	if (!config->aggr_map || !config->aggr_get_id)
1223 		return;
1224 
1225 	if (config->percore_show_thread)
1226 		return print_percore_thread(config, counter, prefix);
1227 
1228 	for (s = 0; s < config->aggr_map->nr; s++) {
1229 		if (prefix && metric_only)
1230 			fprintf(output, "%s", prefix);
1231 
1232 		print_counter_aggrdata(config, counter, s,
1233 				       prefix, metric_only,
1234 				       &first, -1);
1235 	}
1236 
1237 	if (metric_only)
1238 		fputc('\n', output);
1239 }
1240 
1241 void evlist__print_counters(struct evlist *evlist, struct perf_stat_config *config,
1242 			    struct target *_target, struct timespec *ts, int argc, const char **argv)
1243 {
1244 	bool metric_only = config->metric_only;
1245 	int interval = config->interval;
1246 	struct evsel *counter;
1247 	char buf[64], *prefix = NULL;
1248 
1249 	if (config->iostat_run)
1250 		evlist->selected = evlist__first(evlist);
1251 
1252 	if (interval)
1253 		print_interval(config, evlist, prefix = buf, ts);
1254 	else
1255 		print_header(config, _target, argc, argv);
1256 
1257 	if (metric_only) {
1258 		static int num_print_iv;
1259 
1260 		if (num_print_iv == 0 && !interval)
1261 			print_metric_headers(config, evlist, prefix, false);
1262 		if (num_print_iv++ == 25)
1263 			num_print_iv = 0;
1264 		if (config->aggr_mode == AGGR_GLOBAL && prefix && !config->iostat_run)
1265 			fprintf(config->output, "%s", prefix);
1266 	}
1267 
1268 	switch (config->aggr_mode) {
1269 	case AGGR_CORE:
1270 	case AGGR_DIE:
1271 	case AGGR_SOCKET:
1272 	case AGGR_NODE:
1273 		print_aggr(config, evlist, prefix);
1274 		break;
1275 	case AGGR_THREAD:
1276 		evlist__for_each_entry(evlist, counter) {
1277 			print_aggr_thread(config, _target, counter, prefix);
1278 		}
1279 		break;
1280 	case AGGR_GLOBAL:
1281 		if (config->iostat_run)
1282 			iostat_print_counters(evlist, config, ts, prefix = buf,
1283 					      print_counter_aggr);
1284 		else {
1285 			evlist__for_each_entry(evlist, counter) {
1286 				print_counter_aggr(config, counter, prefix);
1287 			}
1288 			if (metric_only)
1289 				fputc('\n', config->output);
1290 		}
1291 		break;
1292 	case AGGR_NONE:
1293 		if (metric_only)
1294 			print_no_aggr_metric(config, evlist, prefix);
1295 		else {
1296 			evlist__for_each_entry(evlist, counter) {
1297 				if (counter->percore)
1298 					print_percore(config, counter, prefix);
1299 				else
1300 					print_counter(config, counter, prefix);
1301 			}
1302 		}
1303 		break;
1304 	case AGGR_UNSET:
1305 	default:
1306 		break;
1307 	}
1308 
1309 	if (!interval && !config->csv_output)
1310 		print_footer(config);
1311 
1312 	fflush(config->output);
1313 }
1314