1/*
  2 * builtin-report.c
  3 *
  4 * Builtin report command: Analyze the perf.data input file,
  5 * look up and read DSOs and symbol information and display
  6 * a histogram of results, along various sorting keys.
  7 */
  8#include "builtin.h"
  9
 10#include "util/util.h"
 11#include "util/cache.h"
 12
 13#include "util/annotate.h"
 14#include "util/color.h"
 
 15#include <linux/list.h>
 16#include <linux/rbtree.h>
 
 
 
 17#include "util/symbol.h"
 
 
 
 18#include "util/callchain.h"
 19#include "util/strlist.h"
 20#include "util/values.h"
 21
 22#include "perf.h"
 23#include "util/debug.h"
 24#include "util/evlist.h"
 25#include "util/evsel.h"
 
 26#include "util/header.h"
 
 27#include "util/session.h"
 
 28#include "util/tool.h"
 29
 30#include "util/parse-options.h"
 
 31#include "util/parse-events.h"
 32
 33#include "util/thread.h"
 34#include "util/sort.h"
 35#include "util/hist.h"
 36#include "util/data.h"
 37#include "arch/common.h"
 
 
 
 
 
 
 
 38
 39#include <dlfcn.h>
 
 
 
 
 
 40#include <linux/bitmap.h>
 
 
 
 
 
 
 
 
 
 
 
 
 41
 42struct report {
 43	struct perf_tool	tool;
 44	struct perf_session	*session;
 45	bool			force, use_tui, use_gtk, use_stdio;
 46	bool			hide_unresolved;
 47	bool			dont_use_callchains;
 
 
 
 
 
 48	bool			show_full_info;
 49	bool			show_threads;
 50	bool			inverted_callchain;
 51	bool			mem_mode;
 
 
 
 52	bool			header;
 53	bool			header_only;
 
 
 
 
 
 
 54	int			max_stack;
 55	struct perf_read_values	show_threads_values;
 56	const char		*pretty_printing_style;
 57	const char		*cpu_list;
 58	const char		*symbol_filter_str;
 
 
 
 
 59	float			min_percent;
 
 
 
 
 60	DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
 
 
 
 
 
 61};
 62
 63static int report__config(const char *var, const char *value, void *cb)
 64{
 
 
 65	if (!strcmp(var, "report.group")) {
 66		symbol_conf.event_group = perf_config_bool(var, value);
 67		return 0;
 68	}
 69	if (!strcmp(var, "report.percent-limit")) {
 70		struct report *rep = cb;
 71		rep->min_percent = strtof(value, NULL);
 
 
 
 
 
 
 72		return 0;
 73	}
 
 
 74
 75	return perf_default_config(var, value, cb);
 76}
 
 
 
 
 
 
 77
 78static int report__add_mem_hist_entry(struct report *rep, struct addr_location *al,
 79				      struct perf_sample *sample, struct perf_evsel *evsel)
 80{
 81	struct symbol *parent = NULL;
 82	struct hist_entry *he;
 83	struct mem_info *mi, *mx;
 84	uint64_t cost;
 85	int err = sample__resolve_callchain(sample, &parent, evsel, al, rep->max_stack);
 86
 87	if (err)
 88		return err;
 
 89
 90	mi = sample__resolve_mem(sample, al);
 91	if (!mi)
 92		return -ENOMEM;
 
 
 
 
 
 
 
 
 93
 94	if (rep->hide_unresolved && !al->sym)
 95		return 0;
 96
 97	cost = sample->weight;
 98	if (!cost)
 99		cost = 1;
100
101	/*
102	 * must pass period=weight in order to get the correct
103	 * sorting from hists__collapse_resort() which is solely
104	 * based on periods. We want sorting be done on nr_events * weight
105	 * and this is indirectly achieved by passing period=weight here
106	 * and the he_stat__add_period() function.
107	 */
108	he = __hists__add_entry(&evsel->hists, al, parent, NULL, mi,
109				cost, cost, 0);
110	if (!he)
111		return -ENOMEM;
112
113	if (ui__has_annotation()) {
114		err = hist_entry__inc_addr_samples(he, evsel->idx, al->addr);
115		if (err)
116			goto out;
117
118		mx = he->mem_info;
119		err = addr_map_symbol__inc_samples(&mx->daddr, evsel->idx);
 
 
 
120		if (err)
121			goto out;
 
 
 
 
 
 
 
 
122	}
123
124	evsel->hists.stats.total_period += cost;
125	hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
126	err = hist_entry__append_callchain(he, sample);
127out:
128	return err;
129}
130
131static int report__add_branch_hist_entry(struct report *rep, struct addr_location *al,
132					 struct perf_sample *sample, struct perf_evsel *evsel)
 
 
133{
134	struct symbol *parent = NULL;
135	unsigned i;
136	struct hist_entry *he;
137	struct branch_info *bi, *bx;
138	int err = sample__resolve_callchain(sample, &parent, evsel, al, rep->max_stack);
139
140	if (err)
141		return err;
142
143	bi = sample__resolve_bstack(sample, al);
144	if (!bi)
145		return -ENOMEM;
146
147	for (i = 0; i < sample->branch_stack->nr; i++) {
148		if (rep->hide_unresolved && !(bi[i].from.sym && bi[i].to.sym))
149			continue;
150
151		err = -ENOMEM;
 
 
152
153		/* overwrite the 'al' to branch-to info */
154		al->map = bi[i].to.map;
155		al->sym = bi[i].to.sym;
156		al->addr = bi[i].to.addr;
157		/*
158		 * The report shows the percentage of total branches captured
159		 * and not events sampled. Thus we use a pseudo period of 1.
160		 */
161		he = __hists__add_entry(&evsel->hists, al, parent, &bi[i], NULL,
162					1, 1, 0);
163		if (he) {
164			if (ui__has_annotation()) {
165				bx = he->branch_info;
166				err = addr_map_symbol__inc_samples(&bx->from,
167								   evsel->idx);
168				if (err)
169					goto out;
170
171				err = addr_map_symbol__inc_samples(&bx->to,
172								   evsel->idx);
173				if (err)
174					goto out;
175			}
176
177			evsel->hists.stats.total_period += 1;
178			hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
179		} else
180			goto out;
181	}
182	err = 0;
183out:
184	free(bi);
185	return err;
186}
187
188static int report__add_hist_entry(struct report *rep, struct perf_evsel *evsel,
189				  struct addr_location *al, struct perf_sample *sample)
190{
191	struct symbol *parent = NULL;
192	struct hist_entry *he;
193	int err = sample__resolve_callchain(sample, &parent, evsel, al, rep->max_stack);
194
195	if (err)
196		return err;
197
198	he = __hists__add_entry(&evsel->hists, al, parent, NULL, NULL,
199				sample->period, sample->weight,
200				sample->transaction);
201	if (he == NULL)
202		return -ENOMEM;
203
204	err = hist_entry__append_callchain(he, sample);
205	if (err)
206		goto out;
207
208	if (ui__has_annotation())
209		err = hist_entry__inc_addr_samples(he, evsel->idx, al->addr);
 
 
 
 
 
210
211	evsel->hists.stats.total_period += sample->period;
212	hists__inc_nr_events(&evsel->hists, PERF_RECORD_SAMPLE);
213out:
214	return err;
 
 
 
215}
216
217
218static int process_sample_event(struct perf_tool *tool,
219				union perf_event *event,
220				struct perf_sample *sample,
221				struct perf_evsel *evsel,
222				struct machine *machine)
223{
224	struct report *rep = container_of(tool, struct report, tool);
225	struct addr_location al;
226	int ret;
 
 
 
 
 
 
227
228	if (perf_event__preprocess_sample(event, machine, &al, sample) < 0) {
 
 
 
 
 
 
 
 
 
229		pr_debug("problem processing %d event, skipping it.\n",
230			 event->header.type);
231		return -1;
 
232	}
233
234	if (rep->hide_unresolved && al.sym == NULL)
235		return 0;
 
 
 
236
237	if (rep->cpu_list && !test_bit(sample->cpu, rep->cpu_bitmap))
238		return 0;
239
240	if (sort__mode == SORT_MODE__BRANCH) {
241		ret = report__add_branch_hist_entry(rep, &al, sample, evsel);
242		if (ret < 0)
243			pr_debug("problem adding lbr entry, skipping event\n");
244	} else if (rep->mem_mode == 1) {
245		ret = report__add_mem_hist_entry(rep, &al, sample, evsel);
246		if (ret < 0)
247			pr_debug("problem adding mem entry, skipping event\n");
 
 
 
 
 
 
248	} else {
249		if (al.map != NULL)
250			al.map->dso->hit = 1;
251
252		ret = report__add_hist_entry(rep, evsel, &al, sample);
253		if (ret < 0)
254			pr_debug("problem incrementing symbol period, skipping event\n");
 
 
 
 
255	}
 
 
 
 
 
 
256	return ret;
257}
258
259static int process_read_event(struct perf_tool *tool,
260			      union perf_event *event,
261			      struct perf_sample *sample __maybe_unused,
262			      struct perf_evsel *evsel,
263			      struct machine *machine __maybe_unused)
264{
265	struct report *rep = container_of(tool, struct report, tool);
266
267	if (rep->show_threads) {
268		const char *name = evsel ? perf_evsel__name(evsel) : "unknown";
269		perf_read_values_add_value(&rep->show_threads_values,
270					   event->read.pid, event->read.tid,
271					   event->read.id,
272					   name,
273					   event->read.value);
274	}
275
276	dump_printf(": %d %d %s %" PRIu64 "\n", event->read.pid, event->read.tid,
277		    evsel ? perf_evsel__name(evsel) : "FAIL",
278		    event->read.value);
279
280	return 0;
281}
282
283/* For pipe mode, sample_type is not currently set */
284static int report__setup_sample_type(struct report *rep)
285{
286	struct perf_session *session = rep->session;
287	u64 sample_type = perf_evlist__combined_sample_type(session->evlist);
288	bool is_pipe = perf_data_file__is_pipe(session->file);
 
 
 
 
 
 
 
 
 
 
 
 
289
290	if (!is_pipe && !(sample_type & PERF_SAMPLE_CALLCHAIN)) {
291		if (sort__has_parent) {
292			ui__error("Selected --sort parent, but no "
293				    "callchain data. Did you call "
294				    "'perf record' without -g?\n");
295			return -EINVAL;
296		}
297		if (symbol_conf.use_callchain) {
298			ui__error("Selected -g but no callchain data. Did "
299				    "you call 'perf record' without -g?\n");
 
 
300			return -1;
301		}
302	} else if (!rep->dont_use_callchains &&
303		   callchain_param.mode != CHAIN_NONE &&
304		   !symbol_conf.use_callchain) {
305			symbol_conf.use_callchain = true;
306			if (callchain_register_param(&callchain_param) < 0) {
307				ui__error("Can't register callchain params.\n");
308				return -EINVAL;
309			}
310	}
311
 
 
 
 
 
 
 
 
312	if (sort__mode == SORT_MODE__BRANCH) {
313		if (!is_pipe &&
314		    !(sample_type & PERF_SAMPLE_BRANCH_STACK)) {
315			ui__error("Selected -b but no branch data. "
316				  "Did you call perf record without -b?\n");
317			return -1;
318		}
319	}
320
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
321	return 0;
322}
323
324static void sig_handler(int sig __maybe_unused)
325{
326	session_done = 1;
327}
328
329static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report *rep,
330					      const char *evname, FILE *fp)
331{
332	size_t ret;
333	char unit;
334	unsigned long nr_samples = hists->stats.nr_events[PERF_RECORD_SAMPLE];
335	u64 nr_events = hists->stats.total_period;
336	struct perf_evsel *evsel = hists_to_evsel(hists);
337	char buf[512];
338	size_t size = sizeof(buf);
 
 
 
 
 
 
 
 
 
339
340	if (perf_evsel__is_group_event(evsel)) {
341		struct perf_evsel *pos;
342
343		perf_evsel__group_desc(evsel, buf, size);
344		evname = buf;
345
346		for_each_group_member(pos, evsel) {
347			nr_samples += pos->hists.stats.nr_events[PERF_RECORD_SAMPLE];
348			nr_events += pos->hists.stats.total_period;
 
 
 
 
 
 
 
349		}
350	}
351
352	nr_samples = convert_unit(nr_samples, &unit);
353	ret = fprintf(fp, "# Samples: %lu%c", nr_samples, unit);
354	if (evname != NULL)
355		ret += fprintf(fp, " of event '%s'", evname);
 
 
 
 
 
 
 
 
 
356
357	if (rep->mem_mode) {
358		ret += fprintf(fp, "\n# Total weight : %" PRIu64, nr_events);
359		ret += fprintf(fp, "\n# Sort order   : %s", sort_order);
360	} else
361		ret += fprintf(fp, "\n# Event count (approx.): %" PRIu64, nr_events);
 
 
 
 
362	return ret + fprintf(fp, "\n#\n");
363}
364
365static int perf_evlist__tty_browse_hists(struct perf_evlist *evlist,
366					 struct report *rep,
367					 const char *help)
368{
369	struct perf_evsel *pos;
370
371	evlist__for_each(evlist, pos) {
372		struct hists *hists = &pos->hists;
373		const char *evname = perf_evsel__name(pos);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
374
375		if (symbol_conf.event_group &&
376		    !perf_evsel__is_group_leader(pos))
 
 
 
377			continue;
378
379		hists__fprintf_nr_sample_events(hists, rep, evname, stdout);
380		hists__fprintf(hists, true, 0, 0, rep->min_percent, stdout);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
381		fprintf(stdout, "\n\n");
382	}
383
384	if (sort_order == default_sort_order &&
385	    parent_pattern == default_parent_pattern) {
386		fprintf(stdout, "#\n# (%s)\n#\n", help);
387
388		if (rep->show_threads) {
389			bool style = !strcmp(rep->pretty_printing_style, "raw");
390			perf_read_values_display(stdout, &rep->show_threads_values,
391						 style);
392			perf_read_values_destroy(&rep->show_threads_values);
393		}
394	}
395
 
 
 
396	return 0;
397}
398
399static void report__warn_kptr_restrict(const struct report *rep)
400{
401	struct map *kernel_map = rep->session->machines.host.vmlinux_maps[MAP__FUNCTION];
402	struct kmap *kernel_kmap = map__kmap(kernel_map);
 
 
 
403
404	if (kernel_map == NULL ||
405	    (kernel_map->dso->hit &&
406	     (kernel_kmap->ref_reloc_sym == NULL ||
407	      kernel_kmap->ref_reloc_sym->addr == 0))) {
408		const char *desc =
409		    "As no suitable kallsyms nor vmlinux was found, kernel samples\n"
410		    "can't be resolved.";
411
412		if (kernel_map) {
413			const struct dso *kdso = kernel_map->dso;
414			if (!RB_EMPTY_ROOT(&kdso->symbols[MAP__FUNCTION])) {
415				desc = "If some relocation was applied (e.g. "
416				       "kexec) symbols may be misresolved.";
417			}
418		}
419
420		ui__warning(
421"Kernel address maps (/proc/{kallsyms,modules}) were restricted.\n\n"
422"Check /proc/sys/kernel/kptr_restrict before running 'perf record'.\n\n%s\n\n"
423"Samples in kernel modules can't be resolved as well.\n\n",
424		desc);
425	}
426}
427
428static int report__gtk_browse_hists(struct report *rep, const char *help)
429{
430	int (*hist_browser)(struct perf_evlist *evlist, const char *help,
431			    struct hist_browser_timer *timer, float min_pcnt);
432
433	hist_browser = dlsym(perf_gtk_handle, "perf_evlist__gtk_browse_hists");
434
435	if (hist_browser == NULL) {
436		ui__error("GTK browser not found!\n");
437		return -1;
438	}
439
440	return hist_browser(rep->session->evlist, help, NULL, rep->min_percent);
441}
442
443static int report__browse_hists(struct report *rep)
444{
445	int ret;
446	struct perf_session *session = rep->session;
447	struct perf_evlist *evlist = session->evlist;
448	const char *help = "For a higher level overview, try: perf report --sort comm,dso";
 
 
 
 
 
 
 
 
 
 
449
450	switch (use_browser) {
451	case 1:
452		ret = perf_evlist__tui_browse_hists(evlist, help, NULL,
453						    rep->min_percent,
454						    &session->header.env);
 
 
 
 
455		/*
456		 * Usually "ret" is the last pressed key, and we only
457		 * care if the key notifies us to switch data file.
458		 */
459		if (ret != K_SWITCH_INPUT_DATA)
460			ret = 0;
461		break;
462	case 2:
463		ret = report__gtk_browse_hists(rep, help);
464		break;
465	default:
466		ret = perf_evlist__tty_browse_hists(evlist, rep, help);
467		break;
468	}
469
470	return ret;
471}
472
473static u64 report__collapse_hists(struct report *rep)
474{
 
 
475	struct ui_progress prog;
476	struct perf_evsel *pos;
477	u64 nr_samples = 0;
478	/*
479 	 * Count number of histogram entries to use when showing progress,
480 	 * reusing nr_samples variable.
481 	 */
482	evlist__for_each(rep->session->evlist, pos)
483		nr_samples += pos->hists.nr_entries;
484
485	ui_progress__init(&prog, nr_samples, "Merging related events...");
486	/*
487	 * Count total number of samples, will be used to check if this
488 	 * session had any.
489 	 */
490	nr_samples = 0;
 
 
 
 
 
 
 
 
 
491
492	evlist__for_each(rep->session->evlist, pos) {
493		struct hists *hists = &pos->hists;
494
495		if (pos->idx == 0)
496			hists->symbol_filter_str = rep->symbol_filter_str;
497
498		hists__collapse_resort(hists, &prog);
499		nr_samples += hists->stats.nr_events[PERF_RECORD_SAMPLE];
 
 
 
500
501		/* Non-group events are considered as leader */
502		if (symbol_conf.event_group &&
503		    !perf_evsel__is_group_leader(pos)) {
504			struct hists *leader_hists = &pos->leader->hists;
505
506			hists__match(leader_hists, hists);
507			hists__link(leader_hists, hists);
508		}
509	}
510
511	ui_progress__finish();
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
512
513	return nr_samples;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
514}
515
516static int __cmd_report(struct report *rep)
517{
518	int ret;
519	u64 nr_samples;
520	struct perf_session *session = rep->session;
521	struct perf_evsel *pos;
522	struct perf_data_file *file = session->file;
523
524	signal(SIGINT, sig_handler);
525
526	if (rep->cpu_list) {
527		ret = perf_session__cpu_bitmap(session, rep->cpu_list,
528					       rep->cpu_bitmap);
529		if (ret)
 
530			return ret;
 
 
531	}
532
533	if (rep->show_threads)
534		perf_read_values_init(&rep->show_threads_values);
 
 
 
535
536	ret = report__setup_sample_type(rep);
537	if (ret)
 
538		return ret;
 
539
540	ret = perf_session__process_events(session, &rep->tool);
541	if (ret)
 
 
 
 
 
 
 
542		return ret;
 
 
 
 
 
 
 
 
 
543
544	report__warn_kptr_restrict(rep);
545
 
 
 
546	if (use_browser == 0) {
547		if (verbose > 3)
548			perf_session__fprintf(session, stdout);
549
550		if (verbose > 2)
551			perf_session__fprintf_dsos(session, stdout);
552
553		if (dump_trace) {
554			perf_session__fprintf_nr_events(session, stdout);
555			return 0;
556		}
557	}
558
559	nr_samples = report__collapse_hists(rep);
 
 
 
 
560
561	if (session_done())
562		return 0;
563
564	if (nr_samples == 0) {
565		ui__error("The %s file has no samples!\n", file->path);
 
 
 
 
 
 
 
 
566		return 0;
567	}
568
569	evlist__for_each(session->evlist, pos)
570		hists__output_resort(&pos->hists);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
571
572	return report__browse_hists(rep);
573}
574
575static int
576parse_callchain_opt(const struct option *opt, const char *arg, int unset)
577{
578	struct report *rep = (struct report *)opt->value;
579	char *tok, *tok2;
580	char *endptr;
581
 
582	/*
583	 * --no-call-graph
584	 */
585	if (unset) {
586		rep->dont_use_callchains = true;
 
587		return 0;
588	}
589
590	symbol_conf.use_callchain = true;
 
591
592	if (!arg)
593		return 0;
 
 
 
 
594
595	tok = strtok((char *)arg, ",");
596	if (!tok)
 
 
 
597		return -1;
598
599	/* get the output mode */
600	if (!strncmp(tok, "graph", strlen(arg)))
601		callchain_param.mode = CHAIN_GRAPH_ABS;
602
603	else if (!strncmp(tok, "flat", strlen(arg)))
604		callchain_param.mode = CHAIN_FLAT;
605
606	else if (!strncmp(tok, "fractal", strlen(arg)))
607		callchain_param.mode = CHAIN_GRAPH_REL;
608
609	else if (!strncmp(tok, "none", strlen(arg))) {
610		callchain_param.mode = CHAIN_NONE;
611		symbol_conf.use_callchain = false;
612
613		return 0;
614	}
615
616	else
617		return -1;
618
619	/* get the min percentage */
620	tok = strtok(NULL, ",");
621	if (!tok)
622		goto setup;
623
624	callchain_param.min_percent = strtod(tok, &endptr);
625	if (tok == endptr)
626		return -1;
627
628	/* get the print limit */
629	tok2 = strtok(NULL, ",");
630	if (!tok2)
631		goto setup;
632
633	if (tok2[0] != 'c') {
634		callchain_param.print_limit = strtoul(tok2, &endptr, 0);
635		tok2 = strtok(NULL, ",");
636		if (!tok2)
637			goto setup;
638	}
639
640	/* get the call chain order */
641	if (!strncmp(tok2, "caller", strlen("caller")))
642		callchain_param.order = ORDER_CALLER;
643	else if (!strncmp(tok2, "callee", strlen("callee")))
644		callchain_param.order = ORDER_CALLEE;
645	else
646		return -1;
647
648	/* Get the sort key */
649	tok2 = strtok(NULL, ",");
650	if (!tok2)
651		goto setup;
652	if (!strncmp(tok2, "function", strlen("function")))
653		callchain_param.key = CCKEY_FUNCTION;
654	else if (!strncmp(tok2, "address", strlen("address")))
655		callchain_param.key = CCKEY_ADDRESS;
656	else
657		return -1;
658setup:
659	if (callchain_register_param(&callchain_param) < 0) {
660		pr_err("Can't register callchain params\n");
661		return -1;
662	}
663	return 0;
 
 
 
 
664}
665
666int
667report_parse_ignore_callees_opt(const struct option *opt __maybe_unused,
668				const char *arg, int unset __maybe_unused)
669{
670	if (arg) {
671		int err = regcomp(&ignore_callees_regex, arg, REG_EXTENDED);
672		if (err) {
673			char buf[BUFSIZ];
674			regerror(err, &ignore_callees_regex, buf, sizeof(buf));
675			pr_err("Invalid --ignore-callees regex: %s\n%s", arg, buf);
676			return -1;
677		}
678		have_ignore_callees = 1;
679	}
680
681	return 0;
682}
683
684static int
685parse_branch_mode(const struct option *opt __maybe_unused,
686		  const char *str __maybe_unused, int unset)
687{
688	int *branch_mode = opt->value;
689
690	*branch_mode = !unset;
691	return 0;
692}
693
694static int
695parse_percent_limit(const struct option *opt, const char *str,
696		    int unset __maybe_unused)
697{
698	struct report *rep = opt->value;
 
699
700	rep->min_percent = strtof(str, NULL);
 
701	return 0;
702}
703
704int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
705{
706	struct perf_session *session;
 
707	struct stat st;
708	bool has_br_stack = false;
709	int branch_mode = -1;
710	int ret = -1;
711	char callchain_default_opt[] = "fractal,0.5,callee";
 
 
 
 
 
712	const char * const report_usage[] = {
713		"perf report [<options>]",
714		NULL
715	};
716	struct report report = {
717		.tool = {
718			.sample		 = process_sample_event,
719			.mmap		 = perf_event__process_mmap,
720			.mmap2		 = perf_event__process_mmap2,
721			.comm		 = perf_event__process_comm,
722			.exit		 = perf_event__process_exit,
723			.fork		 = perf_event__process_fork,
724			.lost		 = perf_event__process_lost,
725			.read		 = process_read_event,
726			.attr		 = perf_event__process_attr,
727			.tracing_data	 = perf_event__process_tracing_data,
728			.build_id	 = perf_event__process_build_id,
729			.ordered_samples = true,
730			.ordering_requires_timestamps = true,
731		},
732		.max_stack		 = PERF_MAX_STACK_DEPTH,
733		.pretty_printing_style	 = "normal",
 
 
734	};
 
 
 
735	const struct option options[] = {
736	OPT_STRING('i', "input", &input_name, "file",
737		    "input file name"),
738	OPT_INCR('v', "verbose", &verbose,
739		    "be more verbose (show symbol address, etc)"),
 
740	OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
741		    "dump raw trace in ASCII"),
 
 
 
742	OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
743		   "file", "vmlinux pathname"),
 
 
744	OPT_STRING(0, "kallsyms", &symbol_conf.kallsyms_name,
745		   "file", "kallsyms pathname"),
746	OPT_BOOLEAN('f', "force", &report.force, "don't complain, do it"),
747	OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
748		    "load module symbols - WARNING: use only with -k and LIVE kernel"),
749	OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
750		    "Show a column with the number of samples"),
751	OPT_BOOLEAN('T', "threads", &report.show_threads,
752		    "Show per-thread event counters"),
753	OPT_STRING(0, "pretty", &report.pretty_printing_style, "key",
754		   "pretty printing style key: normal raw"),
 
755	OPT_BOOLEAN(0, "tui", &report.use_tui, "Use the TUI interface"),
 
 
756	OPT_BOOLEAN(0, "gtk", &report.use_gtk, "Use the GTK2 interface"),
 
757	OPT_BOOLEAN(0, "stdio", &report.use_stdio,
758		    "Use the stdio interface"),
759	OPT_BOOLEAN(0, "header", &report.header, "Show data header."),
760	OPT_BOOLEAN(0, "header-only", &report.header_only,
761		    "Show only data header."),
762	OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
763		   "sort by key(s): pid, comm, dso, symbol, parent, cpu, srcline,"
764		   " dso_to, dso_from, symbol_to, symbol_from, mispredict,"
765		   " weight, local_weight, mem, symbol_daddr, dso_daddr, tlb, "
766		   "snoop, locked, abort, in_tx, transaction"),
767	OPT_BOOLEAN(0, "showcpuutilization", &symbol_conf.show_cpu_utilization,
768		    "Show sample percentage for different cpu modes"),
 
 
769	OPT_STRING('p', "parent", &parent_pattern, "regex",
770		   "regex filter to identify parent, see: '--sort parent'"),
771	OPT_BOOLEAN('x', "exclude-other", &symbol_conf.exclude_other,
772		    "Only display entries with parent-match"),
773	OPT_CALLBACK_DEFAULT('g', "call-graph", &report, "output_type,min_percent[,print_limit],call_order",
774		     "Display callchains using output_type (graph, flat, fractal, or none) , min percent threshold, optional print limit, callchain order, key (function or address). "
775		     "Default: fractal,0.5,callee,function", &parse_callchain_opt, callchain_default_opt),
 
 
 
 
776	OPT_INTEGER(0, "max-stack", &report.max_stack,
777		    "Set the maximum stack depth when parsing the callchain, "
778		    "anything beyond the specified depth will be ignored. "
779		    "Default: " __stringify(PERF_MAX_STACK_DEPTH)),
780	OPT_BOOLEAN('G', "inverted", &report.inverted_callchain,
781		    "alias for inverted call graph"),
782	OPT_CALLBACK(0, "ignore-callees", NULL, "regex",
783		   "ignore callees of these functions in call graphs",
784		   report_parse_ignore_callees_opt),
785	OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
786		   "only consider symbols in these dsos"),
787	OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
788		   "only consider symbols in these comms"),
 
 
 
 
789	OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
790		   "only consider these symbols"),
791	OPT_STRING(0, "symbol-filter", &report.symbol_filter_str, "filter",
792		   "only show symbols that (partially) match with this filter"),
793	OPT_STRING('w', "column-widths", &symbol_conf.col_width_list_str,
794		   "width[,width...]",
795		   "don't try to adjust column width, use these fixed values"),
796	OPT_STRING('t', "field-separator", &symbol_conf.field_sep, "separator",
797		   "separator for columns, no spaces will be added between "
798		   "columns '.' is reserved."),
799	OPT_BOOLEAN('U', "hide-unresolved", &report.hide_unresolved,
800		    "Only display entries resolved to a symbol"),
801	OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
802		    "Look for files with symbols relative to this directory"),
 
803	OPT_STRING('C', "cpu", &report.cpu_list, "cpu",
804		   "list of cpus to profile"),
805	OPT_BOOLEAN('I', "show-info", &report.show_full_info,
806		    "Display extended information about perf.data file"),
807	OPT_BOOLEAN(0, "source", &symbol_conf.annotate_src,
808		    "Interleave source code with assembly code (default)"),
809	OPT_BOOLEAN(0, "asm-raw", &symbol_conf.annotate_asm_raw,
810		    "Display raw encoding of assembly instructions (default)"),
811	OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style",
812		   "Specify disassembler style (e.g. -M intel for intel syntax)"),
 
 
 
 
813	OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
814		    "Show a column with the sum of periods"),
815	OPT_BOOLEAN(0, "group", &symbol_conf.event_group,
816		    "Show event group information together"),
 
 
 
 
817	OPT_CALLBACK_NOOPT('b', "branch-stack", &branch_mode, "",
818		    "use branch records for histogram filling", parse_branch_mode),
 
 
 
819	OPT_STRING(0, "objdump", &objdump_path, "path",
820		   "objdump binary to use for disassembly and annotations"),
 
 
821	OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
822		    "Disable symbol demangling"),
 
 
823	OPT_BOOLEAN(0, "mem-mode", &report.mem_mode, "mem access profile"),
 
 
824	OPT_CALLBACK(0, "percent-limit", &report, "percent",
825		     "Don't show entries under that percent", parse_percent_limit),
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
826	OPT_END()
827	};
828	struct perf_data_file file = {
829		.mode  = PERF_DATA_MODE_READ,
830	};
 
 
 
831
832	perf_config(report__config, &report);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
833
834	argc = parse_options(argc, argv, options, report_usage, 0);
 
 
 
 
 
 
 
835
836	if (report.use_stdio)
837		use_browser = 0;
838	else if (report.use_tui)
839		use_browser = 1;
840	else if (report.use_gtk)
841		use_browser = 2;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
842
843	if (report.inverted_callchain)
844		callchain_param.order = ORDER_CALLER;
 
 
 
 
 
 
845
846	if (!input_name || !strlen(input_name)) {
847		if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
848			input_name = "-";
849		else
850			input_name = "perf.data";
851	}
852
853	file.path  = input_name;
854	file.force = report.force;
 
 
855
856repeat:
857	session = perf_session__new(&file, false, &report.tool);
858	if (session == NULL)
859		return -ENOMEM;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
860
861	report.session = session;
862
863	has_br_stack = perf_header__has_feat(&session->header,
864					     HEADER_BRANCH_STACK);
 
 
865
866	if (branch_mode == -1 && has_br_stack)
867		sort__mode = SORT_MODE__BRANCH;
868
869	/* sort__mode could be NORMAL if --no-branch-stack */
870	if (sort__mode == SORT_MODE__BRANCH) {
871		/*
872		 * if no sort_order is provided, then specify
873		 * branch-mode specific order
874		 */
875		if (sort_order == default_sort_order)
876			sort_order = "comm,dso_from,symbol_from,"
877				     "dso_to,symbol_to";
 
 
 
 
878
 
 
 
 
 
 
 
 
 
879	}
 
 
 
 
 
 
 
 
 
880	if (report.mem_mode) {
881		if (sort__mode == SORT_MODE__BRANCH) {
882			pr_err("branch and mem mode incompatible\n");
883			goto error;
884		}
885		sort__mode = SORT_MODE__MEMORY;
886
887		/*
888		 * if no sort_order is provided, then specify
889		 * branch-mode specific order
890		 */
891		if (sort_order == default_sort_order)
892			sort_order = "local_weight,mem,sym,dso,symbol_daddr,dso_daddr,snoop,tlb,locked";
893	}
894
895	if (setup_sorting() < 0) {
896		parse_options_usage(report_usage, options, "s", 1);
897		goto error;
898	}
899
900	if (parent_pattern != default_parent_pattern) {
901		if (sort_dimension__add("parent") < 0)
 
 
902			goto error;
 
 
 
903	}
904
905	/* Force tty output for header output. */
 
 
 
 
 
 
 
 
 
 
 
 
 
906	if (report.header || report.header_only)
 
 
 
 
907		use_browser = 0;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
908
909	if (strcmp(input_name, "-") != 0)
910		setup_browser(true);
911	else {
912		use_browser = 0;
913		perf_hpp__init();
 
 
 
 
 
 
 
 
914	}
915
916	if (report.header || report.header_only) {
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
917		perf_session__fprintf_info(session, stdout,
918					   report.show_full_info);
919		if (report.header_only)
920			return 0;
921	} else if (use_browser == 0) {
 
 
 
 
 
 
 
 
 
 
922		fputs("# To display the perf.data header info, please use --header/--header-only options.\n#\n",
923		      stdout);
924	}
925
926	/*
927	 * Only in the TUI browser we are doing integrated annotation,
928	 * so don't allocate extra space that won't be used in the stdio
929	 * implementation.
930	 */
931	if (ui__has_annotation()) {
932		symbol_conf.priv_size = sizeof(struct annotation);
933		machines__set_symbol_filter(&session->machines,
934					    symbol__annotate_init);
 
935		/*
936 		 * For searching by name on the "Browse map details".
937 		 * providing it only in verbose mode not to bloat too
938 		 * much struct symbol.
939 		 */
940		if (verbose) {
941			/*
942			 * XXX: Need to provide a less kludgy way to ask for
943			 * more space per symbol, the u32 is for the index on
944			 * the ui browser.
945			 * See symbol__browser_index.
946			 */
947			symbol_conf.priv_size += sizeof(u32);
948			symbol_conf.sort_by_name = true;
949		}
 
950	}
951
952	if (symbol__init() < 0)
953		goto error;
954
955	if (argc) {
956		/*
957		 * Special case: if there's an argument left then assume that
958		 * it's a symbol filter:
959		 */
960		if (argc > 1)
961			usage_with_options(report_usage, options);
962
963		report.symbol_filter_str = argv[0];
 
 
964	}
965
 
 
 
 
 
 
 
 
 
 
966	sort__setup_elide(stdout);
967
968	ret = __cmd_report(&report);
969	if (ret == K_SWITCH_INPUT_DATA) {
970		perf_session__delete(session);
 
971		goto repeat;
972	} else
973		ret = 0;
974
 
 
975error:
 
 
 
 
 
 
 
 
 
 
 
 
976	perf_session__delete(session);
 
 
 
 
977	return ret;
978}