[06/11] perf session: Make ordered_events reusable

Message ID 1460637147-10555-7-git-send-email-acme@kernel.org
State New
Headers show

Commit Message

Arnaldo Carvalho de Melo April 14, 2016, 12:32 p.m.
From: Wang Nan <wangnan0@huawei.com>

ordered_events__free() leaves linked lists and timestamps not cleared,
so unable to be reused after ordered_events__free(). Which is inconvenient
after 'perf record' supports generating multiple perf.data output and
process build-ids for each of them.

Use ordered_events__reinit() for this.

Signed-off-by: Wang Nan <wangnan0@huawei.com>

Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1460535673-159866-2-git-send-email-wangnan0@huawei.com
Signed-off-by: He Kuang <hekuang@huawei.com>

[ Split from larger patch ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

 tools/perf/util/session.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)



diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 91d4528d71fa..ca1827c4af4a 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1836,7 +1836,11 @@  out:
-	ordered_events__free(&session->ordered_events);
+	/*
+	 * We may switching perf.data output, make ordered_events
+	 * reusable.
+	 */
+	ordered_events__reinit(&session->ordered_events);
 	session->one_mmap = false;
 	return err;