From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9B925C3A59B for ; Fri, 30 Aug 2019 20:26:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6F18F2342E for ; Fri, 30 Aug 2019 20:26:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="qjlgasho" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728143AbfH3U0g (ORCPT ); Fri, 30 Aug 2019 16:26:36 -0400 Received: from userp2130.oracle.com ([156.151.31.86]:40916 "EHLO userp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727992AbfH3U0g (ORCPT ); Fri, 30 Aug 2019 16:26:36 -0400 Received: from pps.filterd (userp2130.oracle.com [127.0.0.1]) by userp2130.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x7UKPbJg008356; Fri, 30 Aug 2019 20:26:01 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=corp-2019-08-05; bh=+IsAOfMVpzahGu2lDbM+oEICyaMhBCIcRgFcY79hLpo=; b=qjlgasho68ZXU0nlCSS9C9ebImsf748nTzZIflPbvgmMtV+RPXTX0yH1UFT6GtNP509u SwY6W9IkyGL6dB0oxuRY7arsnrKpxVMx6fhabfwuvyG8cfoWVoJG5fB/6RgAh02Kjn2K HdgE8iuJAjfmACS4e4TTTj6Bbgh20P4HgC1uWPw/VHDkwJZHwxKaDWpwMsR7ZjImcZQ4 dycKdDYqtir5/dPBZB+DMGxt9OSodfLB95gZ2BBY4HoUGJm6hNOcgY9FGDl0XjKdV30w hZFg+HLY10yTR6cU1rRhBbYAyETiTzbYsz9C8qW01dmTTfZibZ8Ojnartn0Cl+XQyF+k LQ== Received: from aserp3020.oracle.com (aserp3020.oracle.com [141.146.126.70]) by userp2130.oracle.com with ESMTP id 2uqatw800w-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 30 Aug 2019 20:26:01 +0000 Received: from pps.filterd (aserp3020.oracle.com [127.0.0.1]) by aserp3020.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x7UHrniU071728; Fri, 30 Aug 2019 17:54:35 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by aserp3020.oracle.com with ESMTP id 2upc8xrme7-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 30 Aug 2019 17:54:35 +0000 Received: from abhmp0013.oracle.com (abhmp0013.oracle.com [141.146.116.19]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id x7UHsY08027782; Fri, 30 Aug 2019 17:54:34 GMT Received: from smazumda-Precision-T1600.us.oracle.com (/10.132.91.113) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Fri, 30 Aug 2019 10:54:33 -0700 From: subhra mazumdar To: linux-kernel@vger.kernel.org Cc: peterz@infradead.org, mingo@redhat.com, tglx@linutronix.de, steven.sistare@oracle.com, dhaval.giani@oracle.com, daniel.lezcano@linaro.org, vincent.guittot@linaro.org, viresh.kumar@linaro.org, tim.c.chen@linux.intel.com, mgorman@techsingularity.net, parth@linux.ibm.com, patrick.bellasi@arm.com Subject: [RFC PATCH 3/9] sched: add sched feature to disable idle core search Date: Fri, 30 Aug 2019 10:49:38 -0700 Message-Id: <20190830174944.21741-4-subhra.mazumdar@oracle.com> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20190830174944.21741-1-subhra.mazumdar@oracle.com> References: <20190830174944.21741-1-subhra.mazumdar@oracle.com> X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9365 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=1 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1906280000 definitions=main-1908300174 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9365 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1906280000 definitions=main-1908300194 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add a new sched feature SIS_CORE to have an option to disable idle core search (select_idle_core). Signed-off-by: subhra mazumdar --- kernel/sched/features.h | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/sched/features.h b/kernel/sched/features.h index 858589b..de4d506 100644 --- a/kernel/sched/features.h +++ b/kernel/sched/features.h @@ -57,6 +57,7 @@ SCHED_FEAT(TTWU_QUEUE, true) */ SCHED_FEAT(SIS_AVG_CPU, false) SCHED_FEAT(SIS_PROP, true) +SCHED_FEAT(SIS_CORE, true) /* * Issue a WARN when we do multiple update_rq_clock() calls -- 2.9.3