From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751929AbcF0IAg (ORCPT ); Mon, 27 Jun 2016 04:00:36 -0400 Received: from mx0b-0016f401.pphosted.com ([67.231.156.173]:36003 "EHLO mx0b-0016f401.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751248AbcF0IAf (ORCPT ); Mon, 27 Jun 2016 04:00:35 -0400 From: Jisheng Zhang To: , , CC: , Jisheng Zhang Subject: [PATCH] sched/fair: avoid !CONFIG_SMP cpufreq update callbacks when go idle Date: Mon, 27 Jun 2016 15:56:03 +0800 Message-ID: <1467014163-1517-1-git-send-email-jszhang@marvell.com> X-Mailer: git-send-email 2.8.1 MIME-Version: 1.0 Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2016-06-27_03:,, signatures=0 X-Proofpoint-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1604210000 definitions=main-1606270091 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is to avoid cpufreq update callbacks when we go idle on UP platforms. Signed-off-by: Jisheng Zhang --- kernel/sched/fair.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index bdcbeea..236ec5b 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -3121,7 +3121,8 @@ static inline void update_load_avg(struct sched_entity *se, int not_used) struct cfs_rq *cfs_rq = cfs_rq_of(se); struct rq *rq = rq_of(cfs_rq); - cpufreq_trigger_update(rq_clock(rq)); + if (&rq->cfs == cfs_rq) + cpufreq_trigger_update(rq_clock(rq)); } static inline void -- 2.8.1