From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753340AbbKWQWF (ORCPT ); Mon, 23 Nov 2015 11:22:05 -0500 Received: from terminus.zytor.com ([198.137.202.10]:44415 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752291AbbKWQWC (ORCPT ); Mon, 23 Nov 2015 11:22:02 -0500 Date: Mon, 23 Nov 2015 08:21:09 -0800 From: tip-bot for Geliang Tang Message-ID: Cc: peterz@infradead.org, geliangtang@163.com, torvalds@linux-foundation.org, efault@gmx.de, hpa@zytor.com, linux-kernel@vger.kernel.org, tglx@linutronix.de, mingo@kernel.org Reply-To: efault@gmx.de, torvalds@linux-foundation.org, geliangtang@163.com, peterz@infradead.org, linux-kernel@vger.kernel.org, tglx@linutronix.de, mingo@kernel.org, hpa@zytor.com In-Reply-To: References: To: linux-tip-commits@vger.kernel.org Subject: [tip:sched/core] sched/core: Use list_is_singular() in sched_can_stop_tick() Git-Commit-ID: 01783e0d452736d7deff1b920c5eccad67adc428 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 01783e0d452736d7deff1b920c5eccad67adc428 Gitweb: http://git.kernel.org/tip/01783e0d452736d7deff1b920c5eccad67adc428 Author: Geliang Tang AuthorDate: Sun, 15 Nov 2015 18:18:40 +0800 Committer: Ingo Molnar CommitDate: Mon, 23 Nov 2015 09:48:17 +0100 sched/core: Use list_is_singular() in sched_can_stop_tick() Use list_is_singular() to check if run_list has only one entry. Signed-off-by: Geliang Tang Signed-off-by: Peter Zijlstra (Intel) Cc: Linus Torvalds Cc: Mike Galbraith Cc: Peter Zijlstra Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/a5453fafd735affcf28e53a1d0a3d6965cb5dbb5.1447582547.git.geliangtang@163.com Signed-off-by: Ingo Molnar --- kernel/sched/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 1b7cb5e..5b420d2 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -731,7 +731,7 @@ bool sched_can_stop_tick(void) if (current->policy == SCHED_RR) { struct sched_rt_entity *rt_se = ¤t->rt; - return rt_se->run_list.prev == rt_se->run_list.next; + return list_is_singular(&rt_se->run_list); } /*