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 4F75DC7EE23 for ; Fri, 26 May 2023 14:55:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229709AbjEZOzw (ORCPT ); Fri, 26 May 2023 10:55:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47324 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230030AbjEZOzs (ORCPT ); Fri, 26 May 2023 10:55:48 -0400 Received: from mail-qv1-xf34.google.com (mail-qv1-xf34.google.com [IPv6:2607:f8b0:4864:20::f34]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C62E3E68 for ; Fri, 26 May 2023 07:55:25 -0700 (PDT) Received: by mail-qv1-xf34.google.com with SMTP id 6a1803df08f44-6260d262b3fso1397546d6.2 for ; Fri, 26 May 2023 07:55:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bitbyteword.org; s=google; t=1685112925; x=1687704925; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=nVYdErQmwOcZHGzqxcaNnogi2GW6TYxbftez0/A27pg=; b=EXO2d4pePptGSQJTPQP12sseD7KyidWglTMGmjALxwMUzagRCgPcowS0J3GN0A2sc3 +P23X5/urWmlhsoPq/HyO0c75DwjQjfrxgNmXvqvklf/cTzPhCJ1WGMjk6SIWxFyt/De q6ODrIFzxlxVMavr00m1w/mjpDioOSpZUL718NiJKt+kImczkPEZfHwYXZXeSCrrJF5V FhVacFG6se8JdGKy+WUHMXtGt18MEaXVC0JtZLxdSe2rxZf9oEoa3Qe/uNPqL3qdq2PU gbEFuQGxzcXsuj926i+9mhX+qxRZ7nbYWqMnIOEWi5VSBochUGK/LMCFyqiRhWWHrHs5 lhyw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1685112925; x=1687704925; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=nVYdErQmwOcZHGzqxcaNnogi2GW6TYxbftez0/A27pg=; b=ZUm4JnWhwgHcTk+VPBj9h6r6yz+53X188/eD42qQOlS/ntb0cS4IBaNy/R8qun7YNL BL8MRTQXV+/tui0/BNs62UFmBdY0yeqhB37ac/U9g0Uu41+pA5FgG9JC5ymi6Gt1zo7g 2oC6cpUsuyFdNX6qQuSJnJ3SEJQi5TxpxlQRI6Yfkqj72mDEgorVatKfdRl44aS47Atk e6935j2P1ahUkyGt99dxZpB1GWlcCNFC6rjPWABKiZRdluvocacBt8KXATAsQQ1jcycD kWCq0aBnnc4BDd7g/1nZrOtMqAjWF0TmtpD9eo2WJInXYUVNAbm1vja0gwMBuTNxGTIr mjLw== X-Gm-Message-State: AC+VfDxIg9SFWKfCzsR4OfpND17eko40rKQSt2gCdrmTYi+LV7nWl6MK 384yJH5CYMhkdebAidmrcnh3LA== X-Google-Smtp-Source: ACHHUZ4RYOwCRRUN62Y58DuX0b6rsS6FxA9MqxAQyhV0Tb/kYaUd6kp3+It5e9sjqUMGyE2QnsS2zg== X-Received: by 2002:a05:6214:242c:b0:625:83ab:8a42 with SMTP id gy12-20020a056214242c00b0062583ab8a42mr2284081qvb.46.1685112924905; Fri, 26 May 2023 07:55:24 -0700 (PDT) Received: from vinz16.lan (c-73-143-21-186.hsd1.vt.comcast.net. [73.143.21.186]) by smtp.gmail.com with ESMTPSA id q5-20020a0cfa05000000b0061b73e331b2sm1271455qvn.30.2023.05.26.07.55.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 26 May 2023 07:55:24 -0700 (PDT) From: Vineeth Pillai To: luca.abeni@santannapisa.it, Juri Lelli , Daniel Bristot de Oliveira , Peter Zijlstra , Ingo Molnar , Vincent Guittot , Steven Rostedt , Joel Fernandes , youssefesmat@google.com, Dietmar Eggemann , Ben Segall , Mel Gorman , Valentin Schneider Cc: Vineeth Pillai , Jonathan Corbet , linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org Subject: [PATCH v4 2/2] sched/deadline: Update GRUB description in the documentation Date: Fri, 26 May 2023 10:55:19 -0400 Message-Id: <20230526145519.2282062-2-vineeth@bitbyteword.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230526145519.2282062-1-vineeth@bitbyteword.org> References: <20230526145519.2282062-1-vineeth@bitbyteword.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Update the details of GRUB to reflect the updated logic. Signed-off-by: Vineeth Pillai (Google) --- Documentation/scheduler/sched-deadline.rst | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/Documentation/scheduler/sched-deadline.rst b/Documentation/scheduler/sched-deadline.rst index 9d9be52f221a..d9f9f10c2191 100644 --- a/Documentation/scheduler/sched-deadline.rst +++ b/Documentation/scheduler/sched-deadline.rst @@ -203,12 +203,15 @@ Deadline Task Scheduling - Total bandwidth (this_bw): this is the sum of all tasks "belonging" to the runqueue, including the tasks in Inactive state. + - Maximum usable bandwidth (max_bw): This is the maximum bandwidth usable by + deadline tasks and is currently set to the RT capacity. + The algorithm reclaims the bandwidth of the tasks in Inactive state. It does so by decrementing the runtime of the executing task Ti at a pace equal to - dq = -max{ Ui / Umax, (1 - Uinact - Uextra) } dt + dq = -(max{ Ui, (1 - Uinact - Uextra) } / Umax) dt where: -- 2.40.1