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 DF0B2C433F5 for ; Wed, 12 Jan 2022 00:22:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236299AbiALAWB (ORCPT ); Tue, 11 Jan 2022 19:22:01 -0500 Received: from ec2-13-52-33-57.us-west-1.compute.amazonaws.com ([13.52.33.57]:45012 "EHLO aurora.tech" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S236095AbiALAV6 (ORCPT ); Tue, 11 Jan 2022 19:21:58 -0500 X-Greylist: delayed 2567 seconds by postgrey-1.27 at vger.kernel.org; Tue, 11 Jan 2022 19:21:58 EST Received: by aurora.tech (Postfix, from userid 1001) id 9814516402F9; Tue, 11 Jan 2022 15:33:23 -0800 (PST) From: Alison Chaiken To: tglx@linutronix.de Cc: peterz@infradead.org, paulmck@kernel.org, valentin.schneider@arm.com, frederic@kernel.org, linux-kernel@vger.kernel.org, glenn@aurora.tech, alison@she-devel.com, Alison Chaiken Subject: [PATCH 4/4] RCU: update documentation regarding kthread_prio cmdline parameter Date: Tue, 11 Jan 2022 15:32:53 -0800 Message-Id: <20220111233253.21692-5-achaiken@aurora.tech> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220111233253.21692-1-achaiken@aurora.tech> References: <20220111233253.21692-1-achaiken@aurora.tech> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Inform readers that the priority of RCU no-callback threads will also be boosted. Signed-off-by: Alison Chaiken --- Documentation/admin-guide/kernel-parameters.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 1396fd2d9031..b844978e1bdf 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -4439,6 +4439,8 @@ (the least-favored priority). Otherwise, when RCU_BOOST is not set, valid values are 0-99 and the default is zero (non-realtime operation). + When RCU_NOCB_CPU is set, also adjust the + priority of NOCB callback kthreads. rcutree.rcu_nocb_gp_stride= [KNL] Set the number of NOCB callback kthreads in -- 2.32.0