1#include <errno.h>
  2#include <fcntl.h>
  3#include <inttypes.h>
  4#include <linux/kernel.h>
  5#include <linux/types.h>
  6#include <perf/cpumap.h>
  7#include <sys/types.h>
  8#include <sys/stat.h>
  9#include <unistd.h>
 10#include <uapi/linux/mman.h> /* To get things like MAP_HUGETLB even on older libc headers */
 11#include <linux/perf_event.h>
 12#include <linux/zalloc.h>
 13#include "cpumap.h"
 14#include "dso.h"
 15#include "event.h"
 16#include "debug.h"
 17#include "hist.h"
 18#include "machine.h"
 19#include "sort.h"
 20#include "string2.h"
 21#include "strlist.h"
 22#include "thread.h"
 23#include "thread_map.h"
 24#include "time-utils.h"
 25#include <linux/ctype.h>
 26#include "map.h"
 27#include "util/namespaces.h"
 28#include "symbol.h"
 29#include "symbol/kallsyms.h"
 30#include "asm/bug.h"
 31#include "stat.h"
 32#include "session.h"
 33#include "bpf-event.h"
 34#include "print_binary.h"
 35#include "tool.h"
 36#include "../perf.h"
 37
 38static const char *perf_event__names[] = {
 39	[0]					= "TOTAL",
 40	[PERF_RECORD_MMAP]			= "MMAP",
 41	[PERF_RECORD_MMAP2]			= "MMAP2",
 42	[PERF_RECORD_LOST]			= "LOST",
 43	[PERF_RECORD_COMM]			= "COMM",
 44	[PERF_RECORD_EXIT]			= "EXIT",
 45	[PERF_RECORD_THROTTLE]			= "THROTTLE",
 46	[PERF_RECORD_UNTHROTTLE]		= "UNTHROTTLE",
 47	[PERF_RECORD_FORK]			= "FORK",
 48	[PERF_RECORD_READ]			= "READ",
 49	[PERF_RECORD_SAMPLE]			= "SAMPLE",
 50	[PERF_RECORD_AUX]			= "AUX",
 51	[PERF_RECORD_ITRACE_START]		= "ITRACE_START",
 52	[PERF_RECORD_LOST_SAMPLES]		= "LOST_SAMPLES",
 53	[PERF_RECORD_SWITCH]			= "SWITCH",
 54	[PERF_RECORD_SWITCH_CPU_WIDE]		= "SWITCH_CPU_WIDE",
 55	[PERF_RECORD_NAMESPACES]		= "NAMESPACES",
 56	[PERF_RECORD_KSYMBOL]			= "KSYMBOL",
 57	[PERF_RECORD_BPF_EVENT]			= "BPF_EVENT",
 58	[PERF_RECORD_CGROUP]			= "CGROUP",
 59	[PERF_RECORD_TEXT_POKE]			= "TEXT_POKE",
 60	[PERF_RECORD_AUX_OUTPUT_HW_ID]		= "AUX_OUTPUT_HW_ID",
 61	[PERF_RECORD_HEADER_ATTR]		= "ATTR",
 62	[PERF_RECORD_HEADER_EVENT_TYPE]		= "EVENT_TYPE",
 63	[PERF_RECORD_HEADER_TRACING_DATA]	= "TRACING_DATA",
 64	[PERF_RECORD_HEADER_BUILD_ID]		= "BUILD_ID",
 65	[PERF_RECORD_FINISHED_ROUND]		= "FINISHED_ROUND",
 66	[PERF_RECORD_ID_INDEX]			= "ID_INDEX",
 67	[PERF_RECORD_AUXTRACE_INFO]		= "AUXTRACE_INFO",
 68	[PERF_RECORD_AUXTRACE]			= "AUXTRACE",
 69	[PERF_RECORD_AUXTRACE_ERROR]		= "AUXTRACE_ERROR",
 70	[PERF_RECORD_THREAD_MAP]		= "THREAD_MAP",
 71	[PERF_RECORD_CPU_MAP]			= "CPU_MAP",
 72	[PERF_RECORD_STAT_CONFIG]		= "STAT_CONFIG",
 73	[PERF_RECORD_STAT]			= "STAT",
 74	[PERF_RECORD_STAT_ROUND]		= "STAT_ROUND",
 75	[PERF_RECORD_EVENT_UPDATE]		= "EVENT_UPDATE",
 76	[PERF_RECORD_TIME_CONV]			= "TIME_CONV",
 77	[PERF_RECORD_HEADER_FEATURE]		= "FEATURE",
 78	[PERF_RECORD_COMPRESSED]		= "COMPRESSED",
 79	[PERF_RECORD_FINISHED_INIT]		= "FINISHED_INIT",
 80};
 81
 82const char *perf_event__name(unsigned int id)
 83{
 84	if (id >= ARRAY_SIZE(perf_event__names))
 85		return "INVALID";
 86	if (!perf_event__names[id])
 87		return "UNKNOWN";
 88	return perf_event__names[id];
 89}
 90
 91struct process_symbol_args {
 92	const char *name;
 93	u64	   start;
 94};
 95
 96static int find_symbol_cb(void *arg, const char *name, char type,
 97			  u64 start)
 98{
 99	struct process_symbol_args *args = arg;
100
101	/*
102	 * Must be a function or at least an alias, as in PARISC64, where "_text" is
103	 * an 'A' to the same address as "_stext".
104	 */
105	if (!(kallsyms__is_function(type) ||
106	      type == 'A') || strcmp(name, args->name))
107		return 0;
108
109	args->start = start;
110	return 1;
111}
112
113int kallsyms__get_function_start(const char *kallsyms_filename,
114				 const char *symbol_name, u64 *addr)
115{
116	struct process_symbol_args args = { .name = symbol_name, };
117
118	if (kallsyms__parse(kallsyms_filename, &args, find_symbol_cb) <= 0)
119		return -1;
120
121	*addr = args.start;
122	return 0;
123}
124
125void perf_event__read_stat_config(struct perf_stat_config *config,
126				  struct perf_record_stat_config *event)
127{
128	unsigned i;
129
130	for (i = 0; i < event->nr; i++) {
131
132		switch (event->data[i].tag) {
133#define CASE(__term, __val)					\
134		case PERF_STAT_CONFIG_TERM__##__term:		\
135			config->__val = event->data[i].val;	\
136			break;
137
138		CASE(AGGR_MODE, aggr_mode)
139		CASE(SCALE,     scale)
140		CASE(INTERVAL,  interval)
141#undef CASE
142		default:
143			pr_warning("unknown stat config term %" PRI_lu64 "\n",
144				   event->data[i].tag);
145		}
146	}
147}
148
149size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp)
150{
151	const char *s;
152
153	if (event->header.misc & PERF_RECORD_MISC_COMM_EXEC)
154		s = " exec";
155	else
156		s = "";
157
158	return fprintf(fp, "%s: %s:%d/%d\n", s, event->comm.comm, event->comm.pid, event->comm.tid);
159}
160
161size_t perf_event__fprintf_namespaces(union perf_event *event, FILE *fp)
162{
163	size_t ret = 0;
164	struct perf_ns_link_info *ns_link_info;
165	u32 nr_namespaces, idx;
166
167	ns_link_info = event->namespaces.link_info;
168	nr_namespaces = event->namespaces.nr_namespaces;
169
170	ret += fprintf(fp, " %d/%d - nr_namespaces: %u\n\t\t[",
171		       event->namespaces.pid,
172		       event->namespaces.tid,
173		       nr_namespaces);
174
175	for (idx = 0; idx < nr_namespaces; idx++) {
176		if (idx && (idx % 4 == 0))
177			ret += fprintf(fp, "\n\t\t ");
178
179		ret  += fprintf(fp, "%u/%s: %" PRIu64 "/%#" PRIx64 "%s", idx,
180				perf_ns__name(idx), (u64)ns_link_info[idx].dev,
181				(u64)ns_link_info[idx].ino,
182				((idx + 1) != nr_namespaces) ? ", " : "]\n");
183	}
184
185	return ret;
186}
187
188size_t perf_event__fprintf_cgroup(union perf_event *event, FILE *fp)
189{
190	return fprintf(fp, " cgroup: %" PRI_lu64 " %s\n",
191		       event->cgroup.id, event->cgroup.path);
192}
193
194int perf_event__process_comm(struct perf_tool *tool __maybe_unused,
195			     union perf_event *event,
196			     struct perf_sample *sample,
197			     struct machine *machine)
198{
199	return machine__process_comm_event(machine, event, sample);
200}
201
202int perf_event__process_namespaces(struct perf_tool *tool __maybe_unused,
203				   union perf_event *event,
204				   struct perf_sample *sample,
205				   struct machine *machine)
206{
207	return machine__process_namespaces_event(machine, event, sample);
208}
209
210int perf_event__process_cgroup(struct perf_tool *tool __maybe_unused,
211			       union perf_event *event,
212			       struct perf_sample *sample,
213			       struct machine *machine)
214{
215	return machine__process_cgroup_event(machine, event, sample);
216}
217
218int perf_event__process_lost(struct perf_tool *tool __maybe_unused,
219			     union perf_event *event,
220			     struct perf_sample *sample,
221			     struct machine *machine)
222{
223	return machine__process_lost_event(machine, event, sample);
224}
225
226int perf_event__process_aux(struct perf_tool *tool __maybe_unused,
227			    union perf_event *event,
228			    struct perf_sample *sample __maybe_unused,
229			    struct machine *machine)
230{
231	return machine__process_aux_event(machine, event);
232}
233
234int perf_event__process_itrace_start(struct perf_tool *tool __maybe_unused,
235				     union perf_event *event,
236				     struct perf_sample *sample __maybe_unused,
237				     struct machine *machine)
238{
239	return machine__process_itrace_start_event(machine, event);
240}
241
242int perf_event__process_aux_output_hw_id(struct perf_tool *tool __maybe_unused,
243					 union perf_event *event,
244					 struct perf_sample *sample __maybe_unused,
245					 struct machine *machine)
246{
247	return machine__process_aux_output_hw_id_event(machine, event);
248}
249
250int perf_event__process_lost_samples(struct perf_tool *tool __maybe_unused,
251				     union perf_event *event,
252				     struct perf_sample *sample,
253				     struct machine *machine)
254{
255	return machine__process_lost_samples_event(machine, event, sample);
256}
257
258int perf_event__process_switch(struct perf_tool *tool __maybe_unused,
259			       union perf_event *event,
260			       struct perf_sample *sample __maybe_unused,
261			       struct machine *machine)
262{
263	return machine__process_switch_event(machine, event);
264}
265
266int perf_event__process_ksymbol(struct perf_tool *tool __maybe_unused,
267				union perf_event *event,
268				struct perf_sample *sample __maybe_unused,
269				struct machine *machine)
270{
271	return machine__process_ksymbol(machine, event, sample);
272}
273
274int perf_event__process_bpf(struct perf_tool *tool __maybe_unused,
275			    union perf_event *event,
276			    struct perf_sample *sample,
277			    struct machine *machine)
278{
279	return machine__process_bpf(machine, event, sample);
280}
281
282int perf_event__process_text_poke(struct perf_tool *tool __maybe_unused,
283				  union perf_event *event,
284				  struct perf_sample *sample,
285				  struct machine *machine)
286{
287	return machine__process_text_poke(machine, event, sample);
288}
289
290size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp)
291{
292	return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64 "]: %c %s\n",
293		       event->mmap.pid, event->mmap.tid, event->mmap.start,
294		       event->mmap.len, event->mmap.pgoff,
295		       (event->header.misc & PERF_RECORD_MISC_MMAP_DATA) ? 'r' : 'x',
296		       event->mmap.filename);
297}
298
299size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp)
300{
301	if (event->header.misc & PERF_RECORD_MISC_MMAP_BUILD_ID) {
302		char sbuild_id[SBUILD_ID_SIZE];
303		struct build_id bid;
304
305		build_id__init(&bid, event->mmap2.build_id,
306			       event->mmap2.build_id_size);
307		build_id__sprintf(&bid, sbuild_id);
308
309		return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64
310				   " <%s>]: %c%c%c%c %s\n",
311			       event->mmap2.pid, event->mmap2.tid, event->mmap2.start,
312			       event->mmap2.len, event->mmap2.pgoff, sbuild_id,
313			       (event->mmap2.prot & PROT_READ) ? 'r' : '-',
314			       (event->mmap2.prot & PROT_WRITE) ? 'w' : '-',
315			       (event->mmap2.prot & PROT_EXEC) ? 'x' : '-',
316			       (event->mmap2.flags & MAP_SHARED) ? 's' : 'p',
317			       event->mmap2.filename);
318	} else {
319		return fprintf(fp, " %d/%d: [%#" PRI_lx64 "(%#" PRI_lx64 ") @ %#" PRI_lx64
320				   " %02x:%02x %"PRI_lu64" %"PRI_lu64"]: %c%c%c%c %s\n",
321			       event->mmap2.pid, event->mmap2.tid, event->mmap2.start,
322			       event->mmap2.len, event->mmap2.pgoff, event->mmap2.maj,
323			       event->mmap2.min, event->mmap2.ino,
324			       event->mmap2.ino_generation,
325			       (event->mmap2.prot & PROT_READ) ? 'r' : '-',
326			       (event->mmap2.prot & PROT_WRITE) ? 'w' : '-',
327			       (event->mmap2.prot & PROT_EXEC) ? 'x' : '-',
328			       (event->mmap2.flags & MAP_SHARED) ? 's' : 'p',
329			       event->mmap2.filename);
330	}
331}
332
333size_t perf_event__fprintf_thread_map(union perf_event *event, FILE *fp)
334{
335	struct perf_thread_map *threads = thread_map__new_event(&event->thread_map);
336	size_t ret;
337
338	ret = fprintf(fp, " nr: ");
339
340	if (threads)
341		ret += thread_map__fprintf(threads, fp);
342	else
343		ret += fprintf(fp, "failed to get threads from event\n");
344
345	perf_thread_map__put(threads);
346	return ret;
347}
348
349size_t perf_event__fprintf_cpu_map(union perf_event *event, FILE *fp)
350{
351	struct perf_cpu_map *cpus = cpu_map__new_data(&event->cpu_map.data);
352	size_t ret;
353
354	ret = fprintf(fp, ": ");
355
356	if (cpus)
357		ret += cpu_map__fprintf(cpus, fp);
358	else
359		ret += fprintf(fp, "failed to get cpumap from event\n");
360
361	perf_cpu_map__put(cpus);
362	return ret;
363}
364
365int perf_event__process_mmap(struct perf_tool *tool __maybe_unused,
366			     union perf_event *event,
367			     struct perf_sample *sample,
368			     struct machine *machine)
369{
370	return machine__process_mmap_event(machine, event, sample);
371}
372
373int perf_event__process_mmap2(struct perf_tool *tool __maybe_unused,
374			     union perf_event *event,
375			     struct perf_sample *sample,
376			     struct machine *machine)
377{
378	return machine__process_mmap2_event(machine, event, sample);
379}
380
381size_t perf_event__fprintf_task(union perf_event *event, FILE *fp)
382{
383	return fprintf(fp, "(%d:%d):(%d:%d)\n",
384		       event->fork.pid, event->fork.tid,
385		       event->fork.ppid, event->fork.ptid);
386}
387
388int perf_event__process_fork(struct perf_tool *tool __maybe_unused,
389			     union perf_event *event,
390			     struct perf_sample *sample,
391			     struct machine *machine)
392{
393	return machine__process_fork_event(machine, event, sample);
394}
395
396int perf_event__process_exit(struct perf_tool *tool __maybe_unused,
397			     union perf_event *event,
398			     struct perf_sample *sample,
399			     struct machine *machine)
400{
401	return machine__process_exit_event(machine, event, sample);
402}
403
404size_t perf_event__fprintf_aux(union perf_event *event, FILE *fp)
405{
406	return fprintf(fp, " offset: %#"PRI_lx64" size: %#"PRI_lx64" flags: %#"PRI_lx64" [%s%s%s]\n",
407		       event->aux.aux_offset, event->aux.aux_size,
408		       event->aux.flags,
409		       event->aux.flags & PERF_AUX_FLAG_TRUNCATED ? "T" : "",
410		       event->aux.flags & PERF_AUX_FLAG_OVERWRITE ? "O" : "",
411		       event->aux.flags & PERF_AUX_FLAG_PARTIAL   ? "P" : "");
412}
413
414size_t perf_event__fprintf_itrace_start(union perf_event *event, FILE *fp)
415{
416	return fprintf(fp, " pid: %u tid: %u\n",
417		       event->itrace_start.pid, event->itrace_start.tid);
418}
419
420size_t perf_event__fprintf_aux_output_hw_id(union perf_event *event, FILE *fp)
421{
422	return fprintf(fp, " hw_id: %#"PRI_lx64"\n",
423		       event->aux_output_hw_id.hw_id);
424}
425
426size_t perf_event__fprintf_switch(union perf_event *event, FILE *fp)
427{
428	bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT;
429	const char *in_out = !out ? "IN         " :
430		!(event->header.misc & PERF_RECORD_MISC_SWITCH_OUT_PREEMPT) ?
431				    "OUT        " : "OUT preempt";
432
433	if (event->header.type == PERF_RECORD_SWITCH)
434		return fprintf(fp, " %s\n", in_out);
435
436	return fprintf(fp, " %s  %s pid/tid: %5d/%-5d\n",
437		       in_out, out ? "next" : "prev",
438		       event->context_switch.next_prev_pid,
439		       event->context_switch.next_prev_tid);
440}
441
442static size_t perf_event__fprintf_lost(union perf_event *event, FILE *fp)
443{
444	return fprintf(fp, " lost %" PRI_lu64 "\n", event->lost.lost);
445}
446
447size_t perf_event__fprintf_ksymbol(union perf_event *event, FILE *fp)
448{
449	return fprintf(fp, " addr %" PRI_lx64 " len %u type %u flags 0x%x name %s\n",
450		       event->ksymbol.addr, event->ksymbol.len,
451		       event->ksymbol.ksym_type,
452		       event->ksymbol.flags, event->ksymbol.name);
453}
454
455size_t perf_event__fprintf_bpf(union perf_event *event, FILE *fp)
456{
457	return fprintf(fp, " type %u, flags %u, id %u\n",
458		       event->bpf.type, event->bpf.flags, event->bpf.id);
459}
460
461static int text_poke_printer(enum binary_printer_ops op, unsigned int val,
462			     void *extra, FILE *fp)
463{
464	bool old = *(bool *)extra;
465
466	switch ((int)op) {
467	case BINARY_PRINT_LINE_BEGIN:
468		return fprintf(fp, "            %s bytes:", old ? "Old" : "New");
469	case BINARY_PRINT_NUM_DATA:
470		return fprintf(fp, " %02x", val);
471	case BINARY_PRINT_LINE_END:
472		return fprintf(fp, "\n");
473	default:
474		return 0;
475	}
476}
477
478size_t perf_event__fprintf_text_poke(union perf_event *event, struct machine *machine, FILE *fp)
479{
480	struct perf_record_text_poke_event *tp = &event->text_poke;
481	size_t ret;
482	bool old;
483
484	ret = fprintf(fp, " %" PRI_lx64 " ", tp->addr);
485	if (machine) {
486		struct addr_location al;
487
488		al.map = maps__find(machine__kernel_maps(machine), tp->addr);
489		if (al.map && map__load(al.map) >= 0) {
490			al.addr = al.map->map_ip(al.map, tp->addr);
491			al.sym = map__find_symbol(al.map, al.addr);
492			if (al.sym)
493				ret += symbol__fprintf_symname_offs(al.sym, &al, fp);
494		}
495	}
496	ret += fprintf(fp, " old len %u new len %u\n", tp->old_len, tp->new_len);
497	old = true;
498	ret += binary__fprintf(tp->bytes, tp->old_len, 16, text_poke_printer,
499			       &old, fp);
500	old = false;
501	ret += binary__fprintf(tp->bytes + tp->old_len, tp->new_len, 16,
502			       text_poke_printer, &old, fp);
503	return ret;
504}
505
506size_t perf_event__fprintf(union perf_event *event, struct machine *machine, FILE *fp)
507{
508	size_t ret = fprintf(fp, "PERF_RECORD_%s",
509			     perf_event__name(event->header.type));
510
511	switch (event->header.type) {
512	case PERF_RECORD_COMM:
513		ret += perf_event__fprintf_comm(event, fp);
514		break;
515	case PERF_RECORD_FORK:
516	case PERF_RECORD_EXIT:
517		ret += perf_event__fprintf_task(event, fp);
518		break;
519	case PERF_RECORD_MMAP:
520		ret += perf_event__fprintf_mmap(event, fp);
521		break;
522	case PERF_RECORD_NAMESPACES:
523		ret += perf_event__fprintf_namespaces(event, fp);
524		break;
525	case PERF_RECORD_CGROUP:
526		ret += perf_event__fprintf_cgroup(event, fp);
527		break;
528	case PERF_RECORD_MMAP2:
529		ret += perf_event__fprintf_mmap2(event, fp);
530		break;
531	case PERF_RECORD_AUX:
532		ret += perf_event__fprintf_aux(event, fp);
533		break;
534	case PERF_RECORD_ITRACE_START:
535		ret += perf_event__fprintf_itrace_start(event, fp);
536		break;
537	case PERF_RECORD_SWITCH:
538	case PERF_RECORD_SWITCH_CPU_WIDE:
539		ret += perf_event__fprintf_switch(event, fp);
540		break;
541	case PERF_RECORD_LOST:
542		ret += perf_event__fprintf_lost(event, fp);
543		break;
544	case PERF_RECORD_KSYMBOL:
545		ret += perf_event__fprintf_ksymbol(event, fp);
546		break;
547	case PERF_RECORD_BPF_EVENT:
548		ret += perf_event__fprintf_bpf(event, fp);
549		break;
550	case PERF_RECORD_TEXT_POKE:
551		ret += perf_event__fprintf_text_poke(event, machine, fp);
552		break;
553	case PERF_RECORD_AUX_OUTPUT_HW_ID:
554		ret += perf_event__fprintf_aux_output_hw_id(event, fp);
555		break;
556	default:
557		ret += fprintf(fp, "\n");
558	}
559
560	return ret;
561}
562
563int perf_event__process(struct perf_tool *tool __maybe_unused,
564			union perf_event *event,
565			struct perf_sample *sample,
566			struct machine *machine)
567{
568	return machine__process_event(machine, event, sample);
569}
570
571struct map *thread__find_map(struct thread *thread, u8 cpumode, u64 addr,
572			     struct addr_location *al)
573{
574	struct maps *maps = thread->maps;
575	struct machine *machine = maps->machine;
576	bool load_map = false;
577
578	al->maps = maps;
579	al->thread = thread;
580	al->addr = addr;
581	al->cpumode = cpumode;
582	al->filtered = 0;
583
584	if (machine == NULL) {
585		al->map = NULL;
586		return NULL;
587	}
588
589	if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) {
590		al->level = 'k';
591		al->maps = maps = machine__kernel_maps(machine);
592		load_map = true;
593	} else if (cpumode == PERF_RECORD_MISC_USER && perf_host) {
594		al->level = '.';
595	} else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) {
596		al->level = 'g';
597		al->maps = maps = machine__kernel_maps(machine);
598		load_map = true;
599	} else if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) {
600		al->level = 'u';
601	} else {
602		al->level = 'H';
603		al->map = NULL;
604
605		if ((cpumode == PERF_RECORD_MISC_GUEST_USER ||
606			cpumode == PERF_RECORD_MISC_GUEST_KERNEL) &&
607			!perf_guest)
608			al->filtered |= (1 << HIST_FILTER__GUEST);
609		if ((cpumode == PERF_RECORD_MISC_USER ||
610			cpumode == PERF_RECORD_MISC_KERNEL) &&
611			!perf_host)
612			al->filtered |= (1 << HIST_FILTER__HOST);
613
614		return NULL;
615	}
616
617	al->map = maps__find(maps, al->addr);
618	if (al->map != NULL) {
619		/*
620		 * Kernel maps might be changed when loading symbols so loading
621		 * must be done prior to using kernel maps.
622		 */
623		if (load_map)
624			map__load(al->map);
625		al->addr = al->map->map_ip(al->map, al->addr);
626	}
627
628	return al->map;
629}
630
631/*
632 * For branch stacks or branch samples, the sample cpumode might not be correct
633 * because it applies only to the sample 'ip' and not necessary to 'addr' or
634 * branch stack addresses. If possible, use a fallback to deal with those cases.
635 */
636struct map *thread__find_map_fb(struct thread *thread, u8 cpumode, u64 addr,
637				struct addr_location *al)
638{
639	struct map *map = thread__find_map(thread, cpumode, addr, al);
640	struct machine *machine = thread->maps->machine;
641	u8 addr_cpumode = machine__addr_cpumode(machine, cpumode, addr);
642
643	if (map || addr_cpumode == cpumode)
644		return map;
645
646	return thread__find_map(thread, addr_cpumode, addr, al);
647}
648
649struct symbol *thread__find_symbol(struct thread *thread, u8 cpumode,
650				   u64 addr, struct addr_location *al)
651{
652	al->sym = NULL;
653	if (thread__find_map(thread, cpumode, addr, al))
654		al->sym = map__find_symbol(al->map, al->addr);
655	return al->sym;
656}
657
658struct symbol *thread__find_symbol_fb(struct thread *thread, u8 cpumode,
659				      u64 addr, struct addr_location *al)
660{
661	al->sym = NULL;
662	if (thread__find_map_fb(thread, cpumode, addr, al))
663		al->sym = map__find_symbol(al->map, al->addr);
664	return al->sym;
665}
666
667static bool check_address_range(struct intlist *addr_list, int addr_range,
668				unsigned long addr)
669{
670	struct int_node *pos;
671
672	intlist__for_each_entry(pos, addr_list) {
673		if (addr >= pos->i && addr < pos->i + addr_range)
674			return true;
675	}
676
677	return false;
678}
679
680/*
681 * Callers need to drop the reference to al->thread, obtained in
682 * machine__findnew_thread()
683 */
684int machine__resolve(struct machine *machine, struct addr_location *al,
685		     struct perf_sample *sample)
686{
687	struct thread *thread;
 
688
689	if (symbol_conf.guest_code && !machine__is_host(machine))
690		thread = machine__findnew_guest_code(machine, sample->pid);
691	else
692		thread = machine__findnew_thread(machine, sample->pid, sample->tid);
693	if (thread == NULL)
694		return -1;
695
696	dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread->tid);
697	thread__find_map(thread, sample->cpumode, sample->ip, al);
698	dump_printf(" ...... dso: %s\n",
699		    al->map ? al->map->dso->long_name :
700			al->level == 'H' ? "[hypervisor]" : "<not found>");
701
702	if (thread__is_filtered(thread))
703		al->filtered |= (1 << HIST_FILTER__THREAD);
704
705	al->sym = NULL;
706	al->cpu = sample->cpu;
707	al->socket = -1;
708	al->srcline = NULL;
709
710	if (al->cpu >= 0) {
711		struct perf_env *env = machine->env;
712
713		if (env && env->cpu)
714			al->socket = env->cpu[al->cpu].socket_id;
715	}
716
717	if (al->map) {
718		struct dso *dso = al->map->dso;
719
720		if (symbol_conf.dso_list &&
721		    (!dso || !(strlist__has_entry(symbol_conf.dso_list,
722						  dso->short_name) ||
723			       (dso->short_name != dso->long_name &&
724				strlist__has_entry(symbol_conf.dso_list,
725						   dso->long_name))))) {
726			al->filtered |= (1 << HIST_FILTER__DSO);
727		}
728
729		al->sym = map__find_symbol(al->map, al->addr);
730	} else if (symbol_conf.dso_list) {
731		al->filtered |= (1 << HIST_FILTER__DSO);
732	}
733
734	if (symbol_conf.sym_list) {
735		int ret = 0;
736		char al_addr_str[32];
737		size_t sz = sizeof(al_addr_str);
738
739		if (al->sym) {
740			ret = strlist__has_entry(symbol_conf.sym_list,
741						al->sym->name);
742		}
743		if (!ret && al->sym) {
744			snprintf(al_addr_str, sz, "0x%"PRIx64,
745				al->map->unmap_ip(al->map, al->sym->start));
746			ret = strlist__has_entry(symbol_conf.sym_list,
747						al_addr_str);
748		}
749		if (!ret && symbol_conf.addr_list && al->map) {
750			unsigned long addr = al->map->unmap_ip(al->map, al->addr);
751
752			ret = intlist__has_entry(symbol_conf.addr_list, addr);
753			if (!ret && symbol_conf.addr_range) {
754				ret = check_address_range(symbol_conf.addr_list,
755							  symbol_conf.addr_range,
756							  addr);
757			}
758		}
759
760		if (!ret)
761			al->filtered |= (1 << HIST_FILTER__SYMBOL);
762	}
763
764	return 0;
765}
766
767/*
768 * The preprocess_sample method will return with reference counts for the
769 * in it, when done using (and perhaps getting ref counts if needing to
770 * keep a pointer to one of those entries) it must be paired with
771 * addr_location__put(), so that the refcounts can be decremented.
772 */
773void addr_location__put(struct addr_location *al)
774{
775	thread__zput(al->thread);
776}
777
778bool is_bts_event(struct perf_event_attr *attr)
779{
780	return attr->type == PERF_TYPE_HARDWARE &&
781	       (attr->config & PERF_COUNT_HW_BRANCH_INSTRUCTIONS) &&
782	       attr->sample_period == 1;
783}
784
785bool sample_addr_correlates_sym(struct perf_event_attr *attr)
786{
787	if (attr->type == PERF_TYPE_SOFTWARE &&
788	    (attr->config == PERF_COUNT_SW_PAGE_FAULTS ||
789	     attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN ||
790	     attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ))
791		return true;
792
793	if (is_bts_event(attr))
794		return true;
795
796	return false;
797}
798
799void thread__resolve(struct thread *thread, struct addr_location *al,
800		     struct perf_sample *sample)
801{
802	thread__find_map_fb(thread, sample->cpumode, sample->addr, al);
803
804	al->cpu = sample->cpu;
805	al->sym = NULL;
806
807	if (al->map)
808		al->sym = map__find_symbol(al->map, al->addr);
809}