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Subject[PATCH 5/9] perf build-id: Move the routine to find DSOs with hits to the lib
Date
From: Arnaldo Carvalho de Melo <acme@redhat.com>

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.

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>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/Makefile | 2 +
tools/perf/builtin-buildid-list.c | 31 +---------------------------
tools/perf/util/build-id.c | 39 +++++++++++++++++++++++++++++++++++++
tools/perf/util/build-id.h | 8 +++++++
4 files changed, 51 insertions(+), 29 deletions(-)
create mode 100644 tools/perf/util/build-id.c
create mode 100644 tools/perf/util/build-id.h
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 4296930..3a5fb36 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -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
diff --git a/tools/perf/builtin-buildid-list.c b/tools/perf/builtin-buildid-list.c
index 431f204..d0675c0 100644
--- a/tools/perf/builtin-buildid-list.c
+++ b/tools/perf/builtin-buildid-list.c
@@ -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);

diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c
new file mode 100644
index 0000000..04904b3
--- /dev/null
+++ b/tools/perf/util/build-id.c
@@ -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,
+};
diff --git a/tools/perf/util/build-id.h b/tools/perf/util/build-id.h
new file mode 100644
index 0000000..1d981d6
--- /dev/null
+++ b/tools/perf/util/build-id.h
@@ -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
--
1.6.2.5
--
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