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=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 3A541C43387 for ; Mon, 7 Jan 2019 19:53:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0460C218FF for ; Mon, 7 Jan 2019 19:53:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728319AbfAGTxg (ORCPT ); Mon, 7 Jan 2019 14:53:36 -0500 Received: from mail.kernel.org ([198.145.29.99]:35450 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726983AbfAGTxe (ORCPT ); Mon, 7 Jan 2019 14:53:34 -0500 Received: from gandalf.local.home (cpe-66-24-56-78.stny.res.rr.com [66.24.56.78]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 05AFD218AD; Mon, 7 Jan 2019 19:53:34 +0000 (UTC) Received: from rostedt by gandalf.local.home with local (Exim 4.91) (envelope-from ) id 1ggaxp-0000Ke-1d; Mon, 07 Jan 2019 14:53:33 -0500 Message-Id: <20190107195332.915976523@goodmis.org> User-Agent: quilt/0.65 Date: Mon, 07 Jan 2019 14:52:59 -0500 From: Steven Rostedt To: linux-kernel@vger.kernel.org, linux-rt-users Cc: Thomas Gleixner , Carsten Emde , Sebastian Andrzej Siewior , John Kacur , Paul Gortmaker , Julia Cartwright , Daniel Wagner , tom.zanussi@linux.intel.com Subject: [PATCH RT 07/13] rcu: make RCU_BOOST default on RT without EXPERT References: <20190107195252.599921907@goodmis.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.14.87-rt50-rc1 stable review patch. If anyone has any objections, please let me know. ------------------ From: Sebastian Andrzej Siewior [ Upstream commit 78cab7cb632b6a4c84e78e4f12bb9e83c09b8885 ] Paul E. McKenney suggested to allow enabling RCU_BOOST on RT without the need to go through the EXPERT option first. Suggeted-by: Paul E. McKenney Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Steven Rostedt (VMware) --- kernel/rcu/Kconfig | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/rcu/Kconfig b/kernel/rcu/Kconfig index 0be2c96fb640..a243a78ff38c 100644 --- a/kernel/rcu/Kconfig +++ b/kernel/rcu/Kconfig @@ -36,7 +36,7 @@ config TINY_RCU config RCU_EXPERT bool "Make expert-level adjustments to RCU configuration" - default y if PREEMPT_RT_FULL + default n help This option needs to be enabled if you wish to make expert-level adjustments to RCU configuration. By default, @@ -190,7 +190,7 @@ config RCU_FAST_NO_HZ config RCU_BOOST bool "Enable RCU priority boosting" - depends on RT_MUTEXES && PREEMPT_RCU && RCU_EXPERT + depends on (RT_MUTEXES && PREEMPT_RCU && RCU_EXPERT) || PREEMPT_RT_FULL default y if PREEMPT_RT_FULL help This option boosts the priority of preempted RCU readers that -- 2.19.2