From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752443AbaL2Gjy (ORCPT ); Mon, 29 Dec 2014 01:39:54 -0500 Received: from szxga03-in.huawei.com ([119.145.14.66]:2417 "EHLO szxga03-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751941AbaL2Gji (ORCPT ); Mon, 29 Dec 2014 01:39:38 -0500 From: Yao Dongdong To: , CC: , Subject: [PATCH] sched/core: remove check of p->sched_class Date: Mon, 29 Dec 2014 14:41:43 +0800 Message-ID: <1419835303-28958-1-git-send-email-yaodongdong@huawei.com> X-Mailer: git-send-email 2.1.0 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.107.197.190] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020202.54A0F736.00F5,ss=1,re=0.001,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0, ip=0.0.0.0, so=2013-05-26 15:14:31, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: e25fba76a3d590614fae752a81f71516 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Search all usage of p->sched_class in sched/core.c, no one check it before use, so it seems that every task must belong to one sched_class. Signed-off-by: Yao Dongdong --- 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 b5797b7..bdab49b 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -4740,7 +4740,7 @@ static struct rq *move_queued_task(struct task_struct *p, int new_cpu) void do_set_cpus_allowed(struct task_struct *p, const struct cpumask *new_mask) { - if (p->sched_class && p->sched_class->set_cpus_allowed) + if (p->sched_class->set_cpus_allowed) p->sched_class->set_cpus_allowed(p, new_mask); cpumask_copy(&p->cpus_allowed, new_mask); -- 2.1.0