From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755609AbeDWOff (ORCPT ); Mon, 23 Apr 2018 10:35:35 -0400 Received: from mail.kernel.org ([198.145.29.99]:39446 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755384AbeDWOfd (ORCPT ); Mon, 23 Apr 2018 10:35:33 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 40D2220C51 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=goodmis.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=rostedt@goodmis.org Date: Mon, 23 Apr 2018 10:35:29 -0400 From: Steven Rostedt To: Peter Zijlstra Cc: "Paul E. McKenney" , linux-kernel@vger.kernel.org, mingo@kernel.org, jiangshanlai@gmail.com, dipankar@in.ibm.com, akpm@linux-foundation.org, mathieu.desnoyers@efficios.com, josh@joshtriplett.org, tglx@linutronix.de, dhowells@redhat.com, edumazet@google.com, fweisbec@gmail.com, oleg@redhat.com, joel.opensrc@gmail.com Subject: Re: [PATCH tip/core/rcu 01/22] sched: Make non-production PREEMPT cond_resched() help Tasks RCU Message-ID: <20180423103529.36848ae1@gandalf.local.home> In-Reply-To: <20180423141038.GA4064@hirez.programming.kicks-ass.net> References: <20180423023150.GA21533@linux.vnet.ibm.com> <1524450747-22778-1-git-send-email-paulmck@linux.vnet.ibm.com> <20180423085127.GR4064@hirez.programming.kicks-ass.net> <20180423124000.GL26088@linux.vnet.ibm.com> <20180423094742.6582e19d@gandalf.local.home> <20180423141038.GA4064@hirez.programming.kicks-ass.net> X-Mailer: Claws Mail 3.16.0 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 23 Apr 2018 16:10:38 +0200 Peter Zijlstra wrote: > > http://lkml.kernel.org/r/20180227153646.GD3777@linux.vnet.ibm.com > > That thread using cond_resched_task_rcu_qs() seems like a _lot_ better > than having cond_resched() semantics change depending on random > !scheduler config parameters. Yeah, I agree. Not sure why Paul didn't push it. Maybe because I never replied to that final email and he forgot? Paul? -- Steve