1/*
 2 * build-id.c
 3 *
 4 * build-id support
 5 *
 6 * Copyright (C) 2009, 2010 Red Hat Inc.
 7 * Copyright (C) 2009, 2010 Arnaldo Carvalho de Melo <acme@redhat.com>
 8 */
 9#include "util.h"
10#include <stdio.h>
11#include "build-id.h"
12#include "event.h"
13#include "symbol.h"
14#include <linux/kernel.h>
15#include "debug.h"
16#include "session.h"
17#include "tool.h"
18
19static int build_id__mark_dso_hit(struct perf_tool *tool __used,
20				  union perf_event *event,
21				  struct perf_sample *sample __used,
22				  struct perf_evsel *evsel __used,
23				  struct machine *machine)
24{
25	struct addr_location al;
26	u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
27	struct thread *thread = machine__findnew_thread(machine, event->ip.pid);
28
29	if (thread == NULL) {
30		pr_err("problem processing %d event, skipping it.\n",
31			event->header.type);
32		return -1;
33	}
34
35	thread__find_addr_map(thread, machine, cpumode, MAP__FUNCTION,
36			      event->ip.ip, &al);
37
38	if (al.map != NULL)
39		al.map->dso->hit = 1;
40
41	return 0;
42}
43
44static int perf_event__exit_del_thread(struct perf_tool *tool __used,
45				       union perf_event *event,
46				       struct perf_sample *sample __used,
47				       struct machine *machine)
48{
49	struct thread *thread = machine__findnew_thread(machine, event->fork.tid);
50
51	dump_printf("(%d:%d):(%d:%d)\n", event->fork.pid, event->fork.tid,
52		    event->fork.ppid, event->fork.ptid);
53
54	if (thread) {
55		rb_erase(&thread->rb_node, &machine->threads);
56		machine->last_match = NULL;
57		thread__delete(thread);
58	}
59
60	return 0;
61}
62
63struct perf_tool build_id__mark_dso_hit_ops = {
64	.sample	= build_id__mark_dso_hit,
65	.mmap	= perf_event__process_mmap,
66	.fork	= perf_event__process_task,
67	.exit	= perf_event__exit_del_thread,
68	.attr		 = perf_event__process_attr,
69	.build_id	 = perf_event__process_build_id,
70};
71
72char *dso__build_id_filename(struct dso *self, char *bf, size_t size)
73{
74	char build_id_hex[BUILD_ID_SIZE * 2 + 1];
75
76	if (!self->has_build_id)
77		return NULL;
78
79	build_id__sprintf(self->build_id, sizeof(self->build_id), build_id_hex);
80	if (bf == NULL) {
81		if (asprintf(&bf, "%s/.build-id/%.2s/%s", buildid_dir,
82			     build_id_hex, build_id_hex + 2) < 0)
83			return NULL;
84	} else
85		snprintf(bf, size, "%s/.build-id/%.2s/%s", buildid_dir,
86			 build_id_hex, build_id_hex + 2);
87	return bf;
88}

 1/*
 2 * build-id.c
 3 *
 4 * build-id support
 5 *
 6 * Copyright (C) 2009, 2010 Red Hat Inc.
 7 * Copyright (C) 2009, 2010 Arnaldo Carvalho de Melo <acme@redhat.com>
 8 */
 9#include "util.h"
10#include <stdio.h>
11#include "build-id.h"
12#include "event.h"
13#include "symbol.h"
14#include <linux/kernel.h>
15#include "debug.h"
 
 
16
17static int build_id__mark_dso_hit(union perf_event *event,
 
18				  struct perf_sample *sample __used,
19				  struct perf_evsel *evsel __used,
20				  struct perf_session *session)
21{
22	struct addr_location al;
23	u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
24	struct thread *thread = perf_session__findnew(session, event->ip.pid);
25
26	if (thread == NULL) {
27		pr_err("problem processing %d event, skipping it.\n",
28			event->header.type);
29		return -1;
30	}
31
32	thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION,
33			      event->ip.pid, event->ip.ip, &al);
34
35	if (al.map != NULL)
36		al.map->dso->hit = 1;
37
38	return 0;
39}
40
41static int perf_event__exit_del_thread(union perf_event *event,
 
42				       struct perf_sample *sample __used,
43				       struct perf_session *session)
44{
45	struct thread *thread = perf_session__findnew(session, event->fork.tid);
46
47	dump_printf("(%d:%d):(%d:%d)\n", event->fork.pid, event->fork.tid,
48		    event->fork.ppid, event->fork.ptid);
49
50	if (thread) {
51		rb_erase(&thread->rb_node, &session->threads);
52		session->last_match = NULL;
53		thread__delete(thread);
54	}
55
56	return 0;
57}
58
59struct perf_event_ops build_id__mark_dso_hit_ops = {
60	.sample	= build_id__mark_dso_hit,
61	.mmap	= perf_event__process_mmap,
62	.fork	= perf_event__process_task,
63	.exit	= perf_event__exit_del_thread,
 
 
64};
65
66char *dso__build_id_filename(struct dso *self, char *bf, size_t size)
67{
68	char build_id_hex[BUILD_ID_SIZE * 2 + 1];
69
70	if (!self->has_build_id)
71		return NULL;
72
73	build_id__sprintf(self->build_id, sizeof(self->build_id), build_id_hex);
74	if (bf == NULL) {
75		if (asprintf(&bf, "%s/.build-id/%.2s/%s", buildid_dir,
76			     build_id_hex, build_id_hex + 2) < 0)
77			return NULL;
78	} else
79		snprintf(bf, size, "%s/.build-id/%.2s/%s", buildid_dir,
80			 build_id_hex, build_id_hex + 2);
81	return bf;
82}