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 4BFD5C77B7A for ; Tue, 30 May 2023 13:55:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231708AbjE3Nze (ORCPT ); Tue, 30 May 2023 09:55:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42860 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231651AbjE3Nze (ORCPT ); Tue, 30 May 2023 09:55:34 -0400 Received: from mail-qv1-xf35.google.com (mail-qv1-xf35.google.com [IPv6:2607:f8b0:4864:20::f35]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AE07AEA for ; Tue, 30 May 2023 06:55:32 -0700 (PDT) Received: by mail-qv1-xf35.google.com with SMTP id 6a1803df08f44-626117a8610so14735976d6.1 for ; Tue, 30 May 2023 06:55:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bitbyteword.org; s=google; t=1685454932; x=1688046932; 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=gSS96BQmp/orj0veigjn/MG+4No9KgOkSEIBHXDxWNk=; b=nQyentgTue7+lWz00xktFPfo45ahUAyYxIrD7TRCr5XvjtrprXD6x3GejfX+F64zmP wFgszkowqam8yjAXwH5pjAVuIrNDnqCZwPTlkeUutU3qxRrR6/Ga707aT4xP2uQp/Xxr ZIM3rkMiN0uibjTZNA9YpOgPkFCQXG4i1Mi0u3z35yBzfkjbHF1XobjD+XlLyr6oQfQ6 +5jlpLgzKkUT3N7E3GQVVeTkluZ2zyNWKUVwsvPlUWmRtZs5ijliG6NNzeamTqXqQwwo Xf1POkN9OlG8jSHzmkbQ2vkj73TRM84ZlPkqLMFA832QZuNKszAA57sq8qgjsr2h9IPL /fhA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1685454932; x=1688046932; 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=gSS96BQmp/orj0veigjn/MG+4No9KgOkSEIBHXDxWNk=; b=GInLTOdmFP3K7/T02hd4swPwgFQERcfmCjjhX/r6il0FX0axmYj0eWvPxAYrjOaNqJ 6yJ4W+01H/OMfC/F7GsYPJtkrflOznrPpCjmAF1DCtneCxeR1ONOWi0cQn2BcVyIXBNa fSvUxn8cCoqZaF0cujA9Tp2g9Ga6s1bSrz8ZiuCoIQ5TybUwFnWIT1aJAmKj3YEk0peo P1H62Ucgps0XwxwZOWLv6KkO1y2YcfMUrFNctNaaIG5VwF0LujT7fHB3uCJOy03j2whR WZ7+Jq2Yxfy7OB73t5CLeh9r5ubfYx2JfU23efHoU0VYXt9JxXy+uZRyztHTSzY7cmNz iswg== X-Gm-Message-State: AC+VfDzbV1QdH22jdswBcnYDNAMWCD9IUnjk6zZl6dH7TCDDc5z+iMQi w3m1wSmTBKFU4hjWSNtCMiQe/CUGlXbMOhLNIuyybg== X-Google-Smtp-Source: ACHHUZ4HGmG9UVJRljVDJw5k+9dXUnZxA01/wBQn72HUyv0GiGCkKl5WWl/q8SD7cwN90DQ8akUSNg== X-Received: by 2002:a05:6214:529a:b0:621:48be:baa8 with SMTP id kj26-20020a056214529a00b0062148bebaa8mr1866832qvb.48.1685454931816; Tue, 30 May 2023 06:55:31 -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 u6-20020ae9c006000000b0074d4cf8f9fcsm527809qkk.107.2023.05.30.06.55.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 30 May 2023 06:55:31 -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 v5 2/2] sched/deadline: Update GRUB description in the documentation Date: Tue, 30 May 2023 09:55:26 -0400 Message-Id: <20230530135526.2385378-2-vineeth@bitbyteword.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230530135526.2385378-1-vineeth@bitbyteword.org> References: <20230530135526.2385378-1-vineeth@bitbyteword.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-doc@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..9fe4846079bb 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, (Umax - Uinact - Uextra) } / Umax) dt where: -- 2.40.1