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=-12.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 22031C43463 for ; Mon, 21 Sep 2020 10:10:20 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 026DE20EDD for ; Mon, 21 Sep 2020 10:10:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="HoomHV+c" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 026DE20EDD Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.vnet.ibm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 4Bw0Yh71FPzDqZT for ; Mon, 21 Sep 2020 20:10:16 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=linux.vnet.ibm.com (client-ip=148.163.156.1; helo=mx0a-001b2d01.pphosted.com; envelope-from=srikar@linux.vnet.ibm.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=linux.vnet.ibm.com Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256 header.s=pp1 header.b=HoomHV+c; dkim-atps=neutral Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4Bw0H75f5fzDqXX for ; Mon, 21 Sep 2020 19:57:39 +1000 (AEST) Received: from pps.filterd (m0098394.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 08L9XtrJ073628; Mon, 21 Sep 2020 05:57:28 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=78m92cDc+wL6vnHHyW2ofVXiLPSmxb5qI7CqbB9rH/g=; b=HoomHV+cL7uUREWFF9dL6QnZ5RQ4W8GoTLIY7cqXde/I2BeQZuct2Msi0sALTM/GQSYM ij+0Zqrufmb/lsrgGOJRl0QOQsykO1br09DNBncJaINeL602xCf0tt+7ZrGN6K2Vu3x2 xQ1O7OkGnv2sEjAorM4EAiGIZgMNtoE6fCUAEDkHpnQDEtCXqGe5oWm89Ds92gxykf4H ZOPY/VniI7DoT88dfJ6XsN0bii0fkjmyWTThpKEfdfovUVWbEg1CddJnKpj/r1uqRzAb MmHSWVqSaEWHpBs+l8pBrbHLH3/RsWzkpZaZPcpBBIlsJ30t0l9bHSIPFS4nyFY3Rn6c Hw== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com with ESMTP id 33psbth56k-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 21 Sep 2020 05:57:28 -0400 Received: from m0098394.ppops.net (m0098394.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.36/8.16.0.36) with SMTP id 08L9a6iQ083671; Mon, 21 Sep 2020 05:57:28 -0400 Received: from ppma03fra.de.ibm.com (6b.4a.5195.ip4.static.sl-reverse.com [149.81.74.107]) by mx0a-001b2d01.pphosted.com with ESMTP id 33psbth55f-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 21 Sep 2020 05:57:27 -0400 Received: from pps.filterd (ppma03fra.de.ibm.com [127.0.0.1]) by ppma03fra.de.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 08L9qHDf001834; Mon, 21 Sep 2020 09:57:24 GMT Received: from b06cxnps4075.portsmouth.uk.ibm.com (d06relay12.portsmouth.uk.ibm.com [9.149.109.197]) by ppma03fra.de.ibm.com with ESMTP id 33p1f3rgde-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 21 Sep 2020 09:57:24 +0000 Received: from d06av21.portsmouth.uk.ibm.com (d06av21.portsmouth.uk.ibm.com [9.149.105.232]) by b06cxnps4075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 08L9vMYn22348056 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 21 Sep 2020 09:57:22 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 37DCC52057; Mon, 21 Sep 2020 09:57:22 +0000 (GMT) Received: from srikart450.in.ibm.com (unknown [9.77.192.225]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTP id 3306652050; Mon, 21 Sep 2020 09:57:19 +0000 (GMT) From: Srikar Dronamraju To: Michael Ellerman Subject: [PATCH v2 05/11] powerpc/smp: Limit CPUs traversed to within a node. Date: Mon, 21 Sep 2020 15:26:47 +0530 Message-Id: <20200921095653.9701-6-srikar@linux.vnet.ibm.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200921095653.9701-1-srikar@linux.vnet.ibm.com> References: <20200921095653.9701-1-srikar@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235, 18.0.687 definitions=2020-09-21_01:2020-09-21, 2020-09-20 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 lowpriorityscore=0 bulkscore=0 mlxlogscore=999 malwarescore=0 spamscore=0 mlxscore=0 suspectscore=0 impostorscore=0 phishscore=0 clxscore=1015 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2009210069 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Nathan Lynch , Gautham R Shenoy , Michael Neuling , Srikar Dronamraju , Peter Zijlstra , LKML , Nicholas Piggin , Valentin Schneider , Oliver O'Halloran , Satheesh Rajendran , linuxppc-dev , Ingo Molnar Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" All the arch specific topology cpumasks are within a node/DIE. However when setting these per CPU cpumasks, system traverses through all the online CPUs. This is redundant. Reduce the traversal to only CPUs that are online in the node to which the CPU belongs to. Cc: linuxppc-dev Cc: LKML Cc: Michael Ellerman Cc: Nicholas Piggin Cc: Anton Blanchard Cc: Oliver O'Halloran Cc: Nathan Lynch Cc: Michael Neuling Cc: Gautham R Shenoy Cc: Satheesh Rajendran Cc: Ingo Molnar Cc: Peter Zijlstra Cc: Valentin Schneider Signed-off-by: Srikar Dronamraju Tested-by: Satheesh Rajendran --- arch/powerpc/kernel/smp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index 2e61a81aad88..c860c4950c9f 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -1241,7 +1241,7 @@ static bool update_mask_by_l2(int cpu, struct cpumask *(*mask_fn)(int)) } cpumask_set_cpu(cpu, mask_fn(cpu)); - for_each_cpu(i, cpu_online_mask) { + for_each_cpu_and(i, cpu_online_mask, cpu_cpu_mask(cpu)) { /* * when updating the marks the current CPU has not been marked * online, but we need to update the cache masks -- 2.17.1