From mboxrd@z Thu Jan 1 00:00:00 1970 From: Luiz Capitulino Subject: Making rcu_normal=1 in RT Date: Wed, 12 Oct 2016 11:12:51 -0400 Message-ID: <20161012111251.74d1d52e@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: bigeasy@linutronix.de, joshc@ni.com, mst@redhat.com, paulmck@linux.vnet.ibm.com To: linux-rt-users@vger.kernel.org Return-path: Received: from mx1.redhat.com ([209.132.183.28]:26303 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933584AbcJLPs3 (ORCPT ); Wed, 12 Oct 2016 11:48:29 -0400 Sender: linux-rt-users-owner@vger.kernel.org List-ID: Hi, We have the following patch applied to the RT tree: commit a9d3cc781a3306bfa332fa7cb6134b70696058d5 Author: Josh Cartwright Date: Tue Oct 27 07:31:53 2015 -0500 net: Make synchronize_rcu_expedited() conditional on !RT_FULL However, as noted by Michael, making rcu_normal=1 default in the RT kernel should have the same effect (ie. not calling synchronize_sched_expedited()). So, honest question, is there a reason not to: 1. Drop the patch above 2. Make rcu_normal=1 default?