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 78FE0EB64DA for ; Mon, 10 Jul 2023 21:01:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229563AbjGJVBn (ORCPT ); Mon, 10 Jul 2023 17:01:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33534 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232760AbjGJVBm (ORCPT ); Mon, 10 Jul 2023 17:01:42 -0400 Received: from mail-pl1-x636.google.com (mail-pl1-x636.google.com [IPv6:2607:f8b0:4864:20::636]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B1300FB; Mon, 10 Jul 2023 14:01:38 -0700 (PDT) Received: by mail-pl1-x636.google.com with SMTP id d9443c01a7336-1b8b2886364so32103375ad.0; Mon, 10 Jul 2023 14:01:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1689022898; x=1691614898; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:sender:from:to:cc:subject:date:message-id :reply-to; bh=zzk4Zb/UOMk4q6SsaPq5WbyWefCvWA/AqIp31W/KVD8=; b=H6BC9RtRP0P20hEKbP+Uhd6OQuHBhPT9SfnS0pwXP24XbpLNWqk0FExxrS9awU95x2 8B4Bbnjjw9RL05xU9E/YaRNOlTka+eSss8TVQdG7S1iNyRISMOYUtbKg9udky0slv/FF mDUFVKGHwjoZtEma/F37Rl2Dy1nhtW2iOQHwtEYwU0e9eiv5aEtkCvnCBP5t20/XtSzD 5QMXCpb5ArjpjC1/08Euri6cpZpygC+4GlKZLWycDUd4d/ZfPRvtOu3L6QV3NPlRylKp TelCtPjzjGufaKH2E4Std+TYmAwWsMF9WkpohjwncUY0OcQU4dzzT6f4F6Uz+CYsSj5n 7NbA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1689022898; x=1691614898; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:sender:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=zzk4Zb/UOMk4q6SsaPq5WbyWefCvWA/AqIp31W/KVD8=; b=ZtrgDkzwETLXfP+1uT6owv5sUGog6noCCuMqA4bq0SPw981cdb2IZliWo58VIz+sFY w0W8fJyAwuFMqyFmbh+DHb7moIEr/gbOj98sbiy09uiakoC8dlgNrOG+BlTiz7Ywq4in 7VzdaK/tzYOlEKa5GC4yPTwyXA4zh/AWdJLzp3sjpiwn7TCilz0xYIGP9HhDn0a9dMIK 7VPfstdCbVota3f1U0wrXpNd5giaJw4YsfcZ6CloFj7PFs9pntiZQ9ya73c0CYeOI/z3 BRQYywUAM1faWFyvFbhmdEpC7qjlXLftD2ODp/64wQ/luw3nvWFw8/xa77HoAUi+nkzb 2EnQ== X-Gm-Message-State: ABy/qLZEwocGkih3noqTxNcvoBEya1Ec8o3lsyrHOLCDBHF5WUCXi3gX voFQYjOpKGLB/NCG0Bq1dqk= X-Google-Smtp-Source: APBJJlFHcy2tvzWfCNeWSBgkI2pJBkziE/VqFLKjUNuGJj1R2pSUDQ/76neQ1bmZ0I0PFmcYUz8TZw== X-Received: by 2002:a17:903:234e:b0:1b8:9bd4:297 with SMTP id c14-20020a170903234e00b001b89bd40297mr12123114plh.15.1689022897937; Mon, 10 Jul 2023 14:01:37 -0700 (PDT) Received: from localhost ([2620:10d:c090:400::5:e2fe]) by smtp.gmail.com with ESMTPSA id q15-20020a170902b10f00b001b9da7ae98bsm324904plr.122.2023.07.10.14.01.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 10 Jul 2023 14:01:37 -0700 (PDT) Sender: Tejun Heo Date: Mon, 10 Jul 2023 11:01:36 -1000 From: Tejun Heo To: Waiman Long Cc: Zefan Li , Johannes Weiner , Jonathan Corbet , Shuah Khan , linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, Juri Lelli , Valentin Schneider , Frederic Weisbecker , Mrunal Patel , Ryan Phillips , Brent Rowsell , Peter Hunt , Phil Auld Subject: Re: [PATCH v4 4/9] cgroup/cpuset: Allow suppression of sched domain rebuild in update_cpumasks_hier() Message-ID: References: <20230627143508.1576882-1-longman@redhat.com> <20230627143508.1576882-5-longman@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230627143508.1576882-5-longman@redhat.com> Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org On Tue, Jun 27, 2023 at 10:35:03AM -0400, Waiman Long wrote: > A single partition setup and tear-down operation can lead to > multiple rebuild_sched_domains_locked() calls which is a waste of > effort. This can partly be mitigated by adding a flag to suppress the > rebuild_sched_domains_locked() call in update_cpumasks_hier(). Since > a Boolean flag has already been passed as the 3rd argument to > update_cpumasks_hier(), we can extend that to a full flag word. > > The sched domain rebuild suppression is now enabled in > update_sibling_cpumasks() as all it callers will do the sched domain > rebuild after its return later on anyway. > > Signed-off-by: Waiman Long Applied 1-3 to cgroup/for-6.6. Thanks. -- tejun