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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
19int build_id__mark_dso_hit(struct perf_tool *tool __maybe_unused,
20 union perf_event *event,
21 struct perf_sample *sample,
22 struct perf_evsel *evsel __maybe_unused,
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, sample->pid,
28 sample->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, machine, cpumode, MAP__FUNCTION,
37 sample->ip, &al);
38
39 if (al.map != NULL)
40 al.map->dso->hit = 1;
41
42 return 0;
43}
44
45static int perf_event__exit_del_thread(struct perf_tool *tool __maybe_unused,
46 union perf_event *event,
47 struct perf_sample *sample
48 __maybe_unused,
49 struct machine *machine)
50{
51 struct thread *thread = machine__findnew_thread(machine,
52 event->fork.pid,
53 event->fork.tid);
54
55 dump_printf("(%d:%d):(%d:%d)\n", event->fork.pid, event->fork.tid,
56 event->fork.ppid, event->fork.ptid);
57
58 if (thread) {
59 rb_erase(&thread->rb_node, &machine->threads);
60 machine->last_match = NULL;
61 thread__delete(thread);
62 }
63
64 return 0;
65}
66
67struct perf_tool build_id__mark_dso_hit_ops = {
68 .sample = build_id__mark_dso_hit,
69 .mmap = perf_event__process_mmap,
70 .mmap2 = perf_event__process_mmap2,
71 .fork = perf_event__process_fork,
72 .exit = perf_event__exit_del_thread,
73 .attr = perf_event__process_attr,
74 .build_id = perf_event__process_build_id,
75};
76
77int build_id__sprintf(const u8 *build_id, int len, char *bf)
78{
79 char *bid = bf;
80 const u8 *raw = build_id;
81 int i;
82
83 for (i = 0; i < len; ++i) {
84 sprintf(bid, "%02x", *raw);
85 ++raw;
86 bid += 2;
87 }
88
89 return raw - build_id;
90}
91
92char *dso__build_id_filename(const struct dso *dso, char *bf, size_t size)
93{
94 char build_id_hex[BUILD_ID_SIZE * 2 + 1];
95
96 if (!dso->has_build_id)
97 return NULL;
98
99 build_id__sprintf(dso->build_id, sizeof(dso->build_id), build_id_hex);
100 if (bf == NULL) {
101 if (asprintf(&bf, "%s/.build-id/%.2s/%s", buildid_dir,
102 build_id_hex, build_id_hex + 2) < 0)
103 return NULL;
104 } else
105 snprintf(bf, size, "%s/.build-id/%.2s/%s", buildid_dir,
106 build_id_hex, build_id_hex + 2);
107 return bf;
108}
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}