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 X-Spam-Level: X-Spam-Status: No, score=-20.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2E796C433ED for ; Wed, 19 May 2021 08:09:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 14BAC61353 for ; Wed, 19 May 2021 08:09:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244427AbhESIKj (ORCPT ); Wed, 19 May 2021 04:10:39 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:37472 "EHLO galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244179AbhESIK2 (ORCPT ); Wed, 19 May 2021 04:10:28 -0400 Date: Wed, 19 May 2021 08:09:07 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1621411747; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=13aSZm9uvvITPxgS5rz4U/aa+Zlrot3Vo5JIz4tLnXs=; b=ph3PhBN/nypSNZN0RO3bHq3q32i/M10+X+91ZQN/OqAZQebpBmJeHZInNyB45gzpkxXrc4 WaBNFX3hp130l4asQAc7pBu9MSitfFRNeOfX4Fhev7i9X7ZV0QL++UmL8ErSrAHM+SVh+S BCFP8Z9tspQuAw9/4W54aAOG6gIOO+BsoRGEO7qK44ixCMIc6Dw7gnF2XJ11lCptZNXTqJ aodwBm4WI3uQxKJhFkbkmUiJTw04cmEId/IaPbeBsuKAM2jFKLahlINkgAnab2OhnYo6zT UoMpT5ANW/avB2FXdsELKeBxe/bvnqyyO4sFOHzHsDsPOBMw81tpeydBBHuizg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1621411747; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=13aSZm9uvvITPxgS5rz4U/aa+Zlrot3Vo5JIz4tLnXs=; b=HRgi9WLmkVooQC7BnbJZ2He1keAaBhntNf+e8zKNgeVVQsHHSDUb+D4FtJrrZAqr300mKz fXu4NvgoCdEtfLBg== From: "tip-bot2 for Mel Gorman" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: sched/core] delayacct: Document task_delayacct sysctl Cc: Mel Gorman , "Peter Zijlstra (Intel)" , x86@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20210512114035.GH3672@suse.de> References: <20210512114035.GH3672@suse.de> MIME-Version: 1.0 Message-ID: <162141174718.29796.2047071574805504489.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The following commit has been merged into the sched/core branch of tip: Commit-ID: fcb501704554eebfd27e3220b0540997fd2b24a8 Gitweb: https://git.kernel.org/tip/fcb501704554eebfd27e3220b0540997fd2b24a8 Author: Mel Gorman AuthorDate: Wed, 12 May 2021 12:40:35 +01:00 Committer: Peter Zijlstra CommitterDate: Tue, 18 May 2021 12:53:53 +02:00 delayacct: Document task_delayacct sysctl Update sysctl/kernel.rst. Signed-off-by: Mel Gorman Signed-off-by: Peter Zijlstra (Intel) Link: https://lkml.kernel.org/r/20210512114035.GH3672@suse.de --- Documentation/admin-guide/sysctl/kernel.rst | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst index 1d56a6b..ebd2f99 100644 --- a/Documentation/admin-guide/sysctl/kernel.rst +++ b/Documentation/admin-guide/sysctl/kernel.rst @@ -1087,6 +1087,13 @@ Model available). If your platform happens to meet the requirements for EAS but you do not want to use it, change this value to 0. +task_delayacct +=============== + +Enables/disables task delay accounting (see +:doc:`accounting/delay-accounting.rst`). Enabling this feature incurs +a small amount of overhead in the scheduler but is useful for debugging +and performance tuning. It is required by some tools such as iotop. sched_schedstats ================