From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757488AbZGFIKd (ORCPT ); Mon, 6 Jul 2009 04:10:33 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752348AbZGFIKZ (ORCPT ); Mon, 6 Jul 2009 04:10:25 -0400 Received: from cn.fujitsu.com ([222.73.24.84]:53276 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1752102AbZGFIKY (ORCPT ); Mon, 6 Jul 2009 04:10:24 -0400 Message-ID: <4A51B16A.6020708@cn.fujitsu.com> Date: Mon, 06 Jul 2009 16:10:18 +0800 From: Li Zefan User-Agent: Thunderbird 2.0.0.9 (X11/20071115) MIME-Version: 1.0 To: Ingo Molnar CC: Lai Jiangshan , Steven Rostedt , Frederic Weisbecker , LKML Subject: [PATCH 1/2] tracing/stat: add stat_release() callback Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Lai Jiangshan Add stat_release() callback to struct tracer_stat, so a stat tracer can release it's entries after the stat file has been read out. Signed-off-by: Lai Jiangshan Signed-off-by: Li Zefan --- kernel/trace/trace_stat.c | 7 +++++-- kernel/trace/trace_stat.h | 2 ++ 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/kernel/trace/trace_stat.c b/kernel/trace/trace_stat.c index e66f5e4..f069461 100644 --- a/kernel/trace/trace_stat.c +++ b/kernel/trace/trace_stat.c @@ -49,7 +49,8 @@ static struct dentry *stat_dir; * but it will at least advance closer to the next one * to be released. */ -static struct rb_node *release_next(struct rb_node *node) +static struct rb_node *release_next(struct tracer_stat *ts, + struct rb_node *node) { struct stat_node *snode; struct rb_node *parent = rb_parent(node); @@ -67,6 +68,8 @@ static struct rb_node *release_next(struct rb_node *node) parent->rb_right = NULL; snode = container_of(node, struct stat_node, node); + if (ts->stat_release) + ts->stat_release(snode->stat); kfree(snode); return parent; @@ -78,7 +81,7 @@ static void reset_stat_session(struct stat_session *session) struct rb_node *node = session->stat_root.rb_node; while (node) - node = release_next(node); + node = release_next(session->ts, node); session->stat_root = RB_ROOT; } diff --git a/kernel/trace/trace_stat.h b/kernel/trace/trace_stat.h index f3546a2..8f03914 100644 --- a/kernel/trace/trace_stat.h +++ b/kernel/trace/trace_stat.h @@ -18,6 +18,8 @@ struct tracer_stat { int (*stat_cmp)(void *p1, void *p2); /* Print a stat entry */ int (*stat_show)(struct seq_file *s, void *p); + /* Release an entry */ + void (*stat_release)(void *stat); /* Print the headers of your stat entries */ int (*stat_headers)(struct seq_file *s); }; -- 1.5.4.rc3