![Arnaldo Carvalho de Melo](/assets/img/avatar_default.png)
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>
40 lines
919 B
C
40 lines
919 B
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 "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,
|
|
};
|