From: Kirill Tkhai <tkhai@yandex.ru>
To: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>,
Ingo Molnar <mingo@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
linux-rt-users <linux-rt-users@vger.kernel.org>
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 [thread overview]
Message-ID: <180751360618804@web6d.yandex.ru> (raw)
Simple return
Signed-off-by: Kirill V Tkhai <tkhai@yandex.ru>
CC: Steven Rostedt <rostedt@goodmis.org>
CC: Ingo Molnar <mingo@kernel.org>
CC: Peter Zijlstra <peterz@infradead.org>
CC: linux-rt-users <linux-rt-users@vger.kernel.org>
---
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));
next reply other threads:[~2013-02-11 21:40 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-11 21:40 Kirill Tkhai [this message]
2013-02-13 6:15 ` [PATCH]sched/stop_task: Do not account zero delta_exec in put_prev_task_stop Namhyung Kim
2013-02-14 19:25 ` Steven Rostedt
2013-02-14 19:23 ` Steven Rostedt
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