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/*
* build-id.c
*
* build-id support
*
* Copyright (C) 2009, 2010 Red Hat Inc.
* Copyright (C) 2009, 2010 Arnaldo Carvalho de Melo <acme@redhat.com>
*/
#include "util.h"
#include <stdio.h>
#include "build-id.h"
#include "event.h"
#include "symbol.h"
#include <linux/kernel.h>
#include "debug.h"
#include "session.h"
static int build_id__mark_dso_hit(struct perf_event_ops *ops __used,
union perf_event *event,
struct perf_sample *sample __used,
struct perf_evsel *evsel __used,
struct perf_session *session)
{
struct addr_location al;
u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
struct thread *thread = perf_session__findnew(session, event->ip.pid);
if (thread == NULL) {
pr_err("problem processing %d event, skipping it.\n",
event->header.type);
return -1;
}
thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION,
event->ip.pid, event->ip.ip, &al);
if (al.map != NULL)
al.map->dso->hit = 1;
return 0;
}
static int perf_event__exit_del_thread(struct perf_event_ops *ops __used,
union perf_event *event,
struct perf_sample *sample __used,
struct perf_session *session)
{
struct thread *thread = perf_session__findnew(session, event->fork.tid);
dump_printf("(%d:%d):(%d:%d)\n", event->fork.pid, event->fork.tid,
event->fork.ppid, event->fork.ptid);
if (thread) {
rb_erase(&thread->rb_node, &session->host_machine.threads);
session->host_machine.last_match = NULL;
thread__delete(thread);
}
return 0;
}
struct perf_event_ops build_id__mark_dso_hit_ops = {
.sample = build_id__mark_dso_hit,
.mmap = perf_event__process_mmap,
.fork = perf_event__process_task,
.exit = perf_event__exit_del_thread,
};
char *dso__build_id_filename(struct dso *self, char *bf, size_t size)
{
char build_id_hex[BUILD_ID_SIZE * 2 + 1];
if (!self->has_build_id)
return NULL;
build_id__sprintf(self->build_id, sizeof(self->build_id), build_id_hex);
if (bf == NULL) {
if (asprintf(&bf, "%s/.build-id/%.2s/%s", buildid_dir,
build_id_hex, build_id_hex + 2) < 0)
return NULL;
} else
snprintf(bf, size, "%s/.build-id/%.2s/%s", buildid_dir,
build_id_hex, build_id_hex + 2);
return bf;
}
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