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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id CD04AC2BA4C for ; Wed, 26 Jan 2022 08:12:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:CC :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=3WqFulK0Bq7Q3zM70Qh9Gs+s24zDFq89UxQyEez9RuI=; b=cp8G7pAcNMWjU6 X95plC2hZ0H8/JZmgDG+jegkniMSrzmFaSA8hrYja8nGPyIFxGfgaPO83NFFqQ170GhsY84AZ3Z0q FvwPuqMDKAich1wpg2p90JnuUPFkPjss1BA++JLObKLGbJzUL8hI0Mo75xFAJhbBRE1Cp1wG+7snq 9C9jckAXjQgjkqX4KIzPzIolhZzcktFX3sNu2wLxJ6V8vGDUQtqZp7+Uew4e+1+cjvNpbk/Zcj+f+ jgX5tQ6r4CEJPBH2cjFBajAWvBPmrMYtSSb0Zp66aNY/LBEaWlALRdahrIdCG62GMYqSqyMvyzRdf 285koaMkmwVaOuY9Yt0A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nCdOs-00Ae3E-J7; Wed, 26 Jan 2022 08:11:30 +0000 Received: from szxga08-in.huawei.com ([45.249.212.255]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nCdOa-00AduG-AB for linux-arm-kernel@lists.infradead.org; Wed, 26 Jan 2022 08:11:13 +0000 Received: from canpemm500009.china.huawei.com (unknown [172.30.72.53]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4JkGXb2x9hz1FD6R; Wed, 26 Jan 2022 16:07:11 +0800 (CST) Received: from localhost.localdomain (10.67.164.66) by canpemm500009.china.huawei.com (7.192.105.203) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.21; Wed, 26 Jan 2022 16:11:05 +0800 From: Yicong Yang To: , , , , , , , CC: , , , , , , , , , , <21cnbao@gmail.com>, , Subject: [PATCH v2 0/2] sched/fair: Wake task within the cluster when possible Date: Wed, 26 Jan 2022 16:09:45 +0800 Message-ID: <20220126080947.4529-1-yangyicong@hisilicon.com> X-Mailer: git-send-email 2.31.0 MIME-Version: 1.0 X-Originating-IP: [10.67.164.66] X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To canpemm500009.china.huawei.com (7.192.105.203) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220126_001112_576016_36EDC27E X-CRM114-Status: UNSURE ( 7.17 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This is the follow-up work to support cluster scheduler. Previously we have added cluster level in the scheduler for both ARM64[1] and X86[2] to support load balance between clusters to bring more memory bandwidth and decrease cache contention. This patchset, on the other hand, takes care of wake-up path by giving CPUs within the same cluster a try before scanning the whole LLC to benefit those tasks communicating with each other. [1] 778c558f49a2 ("sched: Add cluster scheduler level in core and related Kconfig for ARM64") [2] 66558b730f25 ("sched: Add cluster scheduler level for x86") Change since v1: - regain the performance data based on v5.17-rc1 - rename cpus_share_cluster to cpus_share_resources per Vincent and Gautham, thanks! Barry Song (2): sched: Add per_cpu cluster domain info and cpus_share_resources API sched/fair: Scan cluster before scanning LLC in wake-up path include/linux/sched/sd_flags.h | 7 ++++++ include/linux/sched/topology.h | 8 +++++- kernel/sched/core.c | 12 +++++++++ kernel/sched/fair.c | 46 +++++++++++++++++++++++++++++++--- kernel/sched/sched.h | 2 ++ kernel/sched/topology.c | 15 +++++++++++ 6 files changed, 85 insertions(+), 5 deletions(-) -- 2.24.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel