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 68B45C433EF for ; Thu, 26 May 2022 10:39:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238559AbiEZKjy (ORCPT ); Thu, 26 May 2022 06:39:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42258 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229886AbiEZKjv (ORCPT ); Thu, 26 May 2022 06:39:51 -0400 Received: from mail-pj1-x102a.google.com (mail-pj1-x102a.google.com [IPv6:2607:f8b0:4864:20::102a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E9011CC16D for ; Thu, 26 May 2022 03:39:50 -0700 (PDT) Received: by mail-pj1-x102a.google.com with SMTP id l20-20020a17090a409400b001dd2a9d555bso1420961pjg.0 for ; Thu, 26 May 2022 03:39:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance-com.20210112.gappssmtp.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=2nB3L+cKWVC+0i7cUASK6ah3sRfXIWNbzDbdAe4fH/k=; b=lrOCz4T1Kq/4W3W3DfQN6ue+qXNmVXqTe6fzUsfeA/2NQ36CGyDQmRAHR3iSD8a4X8 ZOZXWBH7bRSO+cHYu7TugmjR9tcRXkGjOq24Rqtwy9Y2l+4G5PkwLkIDkAwYlsd9Vt4M O2RXvTlBe1yrCKrq0jcyifYZ4KFly/6RPyTlJzYdzOwWJoOyN4ahVNBXw84NIM5ln7Sp 4QP3OAWmHCOZOMvO0VVkWmvSWZ2DPEmO2US4EX+Q6vWRwfnnTZAPYdJl6DL9lt9DWHDe 4UfH9VORSfwWwzCaFTAarVhRCi7MvEmT4J8ENW5YzRL1CDeOWjGSfrEPeBCU3LWjzcew KzYg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=2nB3L+cKWVC+0i7cUASK6ah3sRfXIWNbzDbdAe4fH/k=; b=UGCLNUxjwKmHmyeSf0S4ZhdXRc8muA7h0Tl1qxThI+fLVEAwsmPOllq1fObzM95OuC Es6BFP9HK4JFsPj0dH/vU4Soj8wqyLPLWoJJZEbRIOHQ4R8TyFK27fMCEkBWNOdQjqHQ xrY6tK22EP1O6xVo/ZGnVBWYPeL8MWR+9oEkxsUVO+7jGnK+yJTf17+JCtwvv+vQcqaf VzRVKFVdOJSqop0EjWIGXQ+HT8yrkDxDYH35lhxV3gOYe8Lu9WVcMOyF0FkrZ4k+DDF4 N/oTHIKRrhSRTrSsmE0ak7Fk0EvFFQEj66+3zbfEtRCCkz8Y/H4ZcVCa5n8Pnm/3qb4A dzAg== X-Gm-Message-State: AOAM533y084JYm7cVtEXy6s7lVyo4Wu8Lk+a+mzekjfwY09U0PSd24or vJU46CAl02sYlq39QLU5Vjegkw== X-Google-Smtp-Source: ABdhPJwqmMrK8dU/zABGxmNoJt1CjpCsAmUOcwOZazxgjQ9rXrXLuauYbBMKJBrSd/GHbm4NdNajKQ== X-Received: by 2002:a17:90b:3142:b0:1df:77f2:e169 with SMTP id ip2-20020a17090b314200b001df77f2e169mr1883385pjb.245.1653561590489; Thu, 26 May 2022 03:39:50 -0700 (PDT) Received: from C02CV1DAMD6P.bytedance.net ([139.177.225.225]) by smtp.gmail.com with ESMTPSA id u17-20020a17090341d100b0015e8d4eb23dsm1257311ple.135.2022.05.26.03.39.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 26 May 2022 03:39:50 -0700 (PDT) From: Chengming Zhou To: mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vschneid@redhat.com, odin@uged.al Cc: linux-kernel@vger.kernel.org, duanxiongchun@bytedance.com, songmuchun@bytedance.com, Chengming Zhou Subject: [PATCH v3 0/2] sched/fair: optimize and simplify rq Date: Thu, 26 May 2022 18:39:27 +0800 Message-Id: <20220526103929.14976-1-zhouchengming@bytedance.com> X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, This version is based on [1], which try to not put cfs_rqs in throttled_hierarchy on the rq leaf_cfs_rq_list, simplify the leaf_cfs_rq_list maintenance and optimize the periodic load decay. Vincent suggested moving throttled_hierarchy() outside list_add_leaf_cfs_rq() because the task will not be added in this case which is quite misleading. When do that moving in propagate_entity_cfs_rq(), I found it has problem with propagation upwards. So add the fix in the first patch to be easier to backport, please see the details in its commit message. [1] https://lore.kernel.org/all/20220427160544.40309-1-zhouchengming@bytedance.com/ Chengming Zhou (2): sched/fair: fix propagate during synchronous attach/detach sched/fair: optimize and simplify rq leaf_cfs_rq_list kernel/sched/fair.c | 87 ++++++++++++--------------------------------- 1 file changed, 22 insertions(+), 65 deletions(-) -- 2.36.1