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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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39
tools/perf/util/build-id.c Normal file
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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 "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,
};