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perf build-id: Move the routine to find DSOs with hits to the lib

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Because 'perf record' will have to find the build-ids in after
we stop recording, so as to reduce even more the impact in the
workload while we do the measurement.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1265223128-11786-5-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Arnaldo Carvalho de Melo 2010-02-03 16:52:04 -02:00 committed by Ingo Molnar
parent 8ad94c6052
commit 7b2567c1f5
4 changed files with 51 additions and 29 deletions
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2
tools/perf/Makefile
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@ -357,6 +357,7 @@ LIB_H += util/include/asm/uaccess.h
LIB_H += perf.h
LIB_H += util/cache.h
LIB_H += util/callchain.h
LIB_H += util/build-id.h
LIB_H += util/debug.h
LIB_H += util/debugfs.h
LIB_H += util/event.h
@ -390,6 +391,7 @@ LIB_H += util/probe-event.h
LIB_OBJS += util/abspath.o
LIB_OBJS += util/alias.o
LIB_OBJS += util/build-id.o
LIB_OBJS += util/config.o
LIB_OBJS += util/ctype.o
LIB_OBJS += util/debugfs.o

31
tools/perf/builtin-buildid-list.c
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@ -8,6 +8,7 @@
*/
#include "builtin.h"
#include "perf.h"
#include "util/build-id.h"
#include "util/cache.h"
#include "util/debug.h"
#include "util/parse-options.h"
@ -33,34 +34,6 @@ static const struct option options[] = {
OPT_END()
};
static int build_id_list__process_event(event_t *event,
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.ip, &al);
if (al.map != NULL)
al.map->dso->hit = 1;
return 0;
}
static struct perf_event_ops build_id_list__event_ops = {
.sample = build_id_list__process_event,
.mmap = event__process_mmap,
.fork = event__process_task,
};
static int __cmd_buildid_list(void)
{
int err = -1;
@ -71,7 +44,7 @@ static int __cmd_buildid_list(void)
return -1;
if (with_hits)
perf_session__process_events(session, &build_id_list__event_ops);
perf_session__process_events(session, &build_id__mark_dso_hit_ops);
dsos__fprintf_buildid(stdout, with_hits);

39
tools/perf/util/build-id.c Normal file
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@ -0,0 +1,39 @@
/*
* 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 "build-id.h"
#include "event.h"
#include "symbol.h"
#include <linux/kernel.h>
static int build_id__mark_dso_hit(event_t *event, 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.ip, &al);
if (al.map != NULL)
al.map->dso->hit = 1;
return 0;
}
struct perf_event_ops build_id__mark_dso_hit_ops = {
.sample = build_id__mark_dso_hit,
.mmap = event__process_mmap,
.fork = event__process_task,
};

8
tools/perf/util/build-id.h Normal file
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@ -0,0 +1,8 @@
#ifndef PERF_BUILD_ID_H_
#define PERF_BUILD_ID_H_ 1
#include "session.h"
extern struct perf_event_ops build_id__mark_dso_hit_ops;
#endif