b424eba271
The 'machine' abstraction was introduced with 'perf kvm' where we could have samples for the host and multiple guests, but at the time we ended up keeping the list of all machines threads all in session->host_machine. Move the threads rb_tree to struct machine to separate the namespaces. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-mdg7sm6j3va09vtgj49gbsrp@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
83 lines
2.1 KiB
C
83 lines
2.1 KiB
C
/*
|
|
* 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"
|
|
|
|
static int build_id__mark_dso_hit(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(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;
|
|
}
|