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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D72FFC28CF5 for ; Wed, 26 Jan 2022 08:11:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238185AbiAZILK (ORCPT ); Wed, 26 Jan 2022 03:11:10 -0500 Received: from szxga08-in.huawei.com ([45.249.212.255]:32059 "EHLO szxga08-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238181AbiAZILH (ORCPT ); Wed, 26 Jan 2022 03:11:07 -0500 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 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII 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 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.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