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 /* ANDROID_CHANGE_BEGIN */
15 #ifdef __APPLE__
16 #include "include/linux/kernel.h"
17 #endif
18 /* ANDROID_CHANGE_END */
19 #include "debug.h"
20
build_id__mark_dso_hit(union perf_event * event,struct perf_sample * sample __used,struct perf_evsel * evsel __used,struct perf_session * session)21 static int build_id__mark_dso_hit(union perf_event *event,
22 struct perf_sample *sample __used,
23 struct perf_evsel *evsel __used,
24 struct perf_session *session)
25 {
26 struct addr_location al;
27 u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
28 struct thread *thread = perf_session__findnew(session, event->ip.pid);
29
30 if (thread == NULL) {
31 pr_err("problem processing %d event, skipping it.\n",
32 event->header.type);
33 return -1;
34 }
35
36 thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION,
37 event->ip.pid, event->ip.ip, &al);
38
39 if (al.map != NULL)
40 al.map->dso->hit = 1;
41
42 return 0;
43 }
44
perf_event__exit_del_thread(union perf_event * event,struct perf_sample * sample __used,struct perf_session * session)45 static int perf_event__exit_del_thread(union perf_event *event,
46 struct perf_sample *sample __used,
47 struct perf_session *session)
48 {
49 struct thread *thread = perf_session__findnew(session, 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, &session->threads);
56 session->last_match = NULL;
57 thread__delete(thread);
58 }
59
60 return 0;
61 }
62
63 struct perf_event_ops 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 };
69
dso__build_id_filename(struct dso * self,char * bf,size_t size)70 char *dso__build_id_filename(struct dso *self, char *bf, size_t size)
71 {
72 char build_id_hex[BUILD_ID_SIZE * 2 + 1];
73
74 if (!self->has_build_id)
75 return NULL;
76
77 build_id__sprintf(self->build_id, sizeof(self->build_id), build_id_hex);
78 if (bf == NULL) {
79 if (asprintf(&bf, "%s/.build-id/%.2s/%s", buildid_dir,
80 build_id_hex, build_id_hex + 2) < 0)
81 return NULL;
82 } else
83 snprintf(bf, size, "%s/.build-id/%.2s/%s", buildid_dir,
84 build_id_hex, build_id_hex + 2);
85 return bf;
86 }
87