From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kirill Tkhai Subject: [PATCH]sched/stop_task: Do not account zero delta_exec in put_prev_task_stop Date: Tue, 12 Feb 2013 01:40:04 +0400 Message-ID: <180751360618804@web6d.yandex.ru> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: Steven Rostedt , Ingo Molnar , Peter Zijlstra , linux-rt-users To: "linux-kernel@vger.kernel.org" Return-path: Received: from forward3.mail.yandex.net ([77.88.46.8]:60652 "EHLO forward3.mail.yandex.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759394Ab3BKVkH (ORCPT ); Mon, 11 Feb 2013 16:40:07 -0500 Sender: linux-rt-users-owner@vger.kernel.org List-ID: Simple return Signed-off-by: Kirill V Tkhai CC: Steven Rostedt CC: Ingo Molnar CC: Peter Zijlstra CC: linux-rt-users --- kernel/sched/stop_task.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/sched/stop_task.c b/kernel/sched/stop_task.c index da5eb5b..78d0458 100644 --- a/kernel/sched/stop_task.c +++ b/kernel/sched/stop_task.c @@ -58,8 +58,8 @@ static void put_prev_task_stop(struct rq *rq, struct task_struct *prev) u64 delta_exec; delta_exec = rq->clock_task - curr->se.exec_start; - if (unlikely((s64)delta_exec < 0)) - delta_exec = 0; + if (unlikely((s64)delta_exec <= 0)) + return; schedstat_set(curr->se.statistics.exec_max, max(curr->se.statistics.exec_max, delta_exec));