From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 98491A0032; Wed, 16 Mar 2022 20:01:51 +0100 (CET) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 7CF9A410F3; Wed, 16 Mar 2022 20:01:51 +0100 (CET) Received: from out5-smtp.messagingengine.com (out5-smtp.messagingengine.com [66.111.4.29]) by mails.dpdk.org (Postfix) with ESMTP id 1A2C0410EC for ; Wed, 16 Mar 2022 20:01:50 +0100 (CET) Received: from compute4.internal (compute4.nyi.internal [10.202.2.44]) by mailout.nyi.internal (Postfix) with ESMTP id 6638B5C01A0; Wed, 16 Mar 2022 15:01:48 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute4.internal (MEProxy); Wed, 16 Mar 2022 15:01:48 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=monjalon.net; h= cc:cc:content-transfer-encoding:content-type:date:date:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:sender:subject:subject:to:to; s=fm1; bh=P4lyrzsufdX4w2 crorx2mPeONn+wZfSnVtDwSMfpiqU=; b=ugdlMOCUnR64sYghEv6BmsAjPMjoNW K8Y+Lb5S2c9MZGIEzIiwtFkcVaKd1GVdGHGQGtStjPLQuwkb6imubK0BqY74cSyb bGeL5bCsSqvP1zJufFBuZ9DO6ApCJs6rOFhafDhlmzLoa2qkDWXuYB4lNrEFjfMF jdsv+uyLRKHnY95a+CijoVHxA1o0CG0a92cq9/0Ekk5RhqwWMnTNJQ6V1QVE1DR2 6gncKlVglXfm0Yx1psEhxkhS0OjmPNRW9jttrb4GsMrOz9guWQtX6Z6oxA9V3oXR JQ062+n6fHHdku54tkK+pKawnhVfHwqn2s/MFLyxSbgZ1T6wwk7/83FQ== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding :content-type:date:date:from:from:in-reply-to:in-reply-to :message-id:mime-version:references:reply-to:sender:subject :subject:to:to:x-me-proxy:x-me-proxy:x-me-sender:x-me-sender :x-sasl-enc; s=fm3; bh=P4lyrzsufdX4w2crorx2mPeONn+wZfSnVtDwSMfpi qU=; b=Ywah3TOTPq04BE04/PPLf8n7MzijNRvm2K27k0+XTg2udbBIgTBYbvY8Z psNaPHuCrGi0IMm5EW/oI3OJs8fgU4SduAWbZOqfzA1HbaeFzZUSM0dFodiNiFVO ZSmaWn3xQB5wgrYQB/Fn0RDbD7UFY+S1FYQ5XgA69PA480QlTT+fzJORzSqioJc0 f/hYnZZllKMrCIUCcCRSfx1BkfN6x96jshdVR412OODviLI05TRVYZ0sen25rcmd N5Zt8fD/HZy3NTAMbo5HsecLxoYeikBieKGNlRmKu1QXxm3KRa06wJTDTvaZobTj 6joWrhbZ55THBefJMtJrSPR9c7fxQ== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvvddrudefvddguddujecutefuodetggdotefrod ftvfcurfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfgh necuuegrihhlohhuthemuceftddtnecunecujfgurhephffvufffkfgjfhgggfgtsehtuf ertddttddvnecuhfhrohhmpefvhhhomhgrshcuofhonhhjrghlohhnuceothhhohhmrghs sehmohhnjhgrlhhonhdrnhgvtheqnecuggftrfgrthhtvghrnhepudeggfdvfeduffdtfe eglefghfeukefgfffhueejtdetuedtjeeuieeivdffgeehnecuvehluhhsthgvrhfuihii vgeptdenucfrrghrrghmpehmrghilhhfrhhomhepthhhohhmrghssehmohhnjhgrlhhonh drnhgvth X-ME-Proxy: Received: by mail.messagingengine.com (Postfix) with ESMTPA; Wed, 16 Mar 2022 15:01:47 -0400 (EDT) From: Thomas Monjalon To: Tudor Brindus Cc: dev@dpdk.org Subject: Re: [PATCH] doc: nohz_full already implies rcu_nocbs Date: Wed, 16 Mar 2022 20:01:46 +0100 Message-ID: <3313054.e9J7NaK4W3@thomas> In-Reply-To: <20220208035018.795361-1-me@tbrindus.ca> References: <20220208035018.795361-1-me@tbrindus.ca> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org 08/02/2022 04:50, Tudor Brindus: > From Documentation/admin-guide/kernel-parameters.txt, specifically the > last sentence: > > nohz_full= [KNL,BOOT,SMP,ISOL] > The argument is a cpu list, as described above. > In kernels built with CONFIG_NO_HZ_FULL=y, set > the specified list of CPUs whose tick will be stopped > whenever possible. The boot CPU will be forced outside > the range to maintain the timekeeping. Any CPUs > in this list will have their RCU callbacks offloaded, > just as if they had also been called out in the > rcu_nocbs= boot parameter. > > The kernel or-s the nohz_full cpumask into the rcu_nocbs cpumask at > startup, and uses that. > > Signed-off-by: Tudor Brindus Applied, thanks.