From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753705AbdLMQuD (ORCPT ); Wed, 13 Dec 2017 11:50:03 -0500 Received: from mail.kernel.org ([198.145.29.99]:56374 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753323AbdLMQuA (ORCPT ); Wed, 13 Dec 2017 11:50:00 -0500 DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 01522218BC 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: Wed, 13 Dec 2017 11:49:56 -0500 From: Steven Rostedt To: Sebastian Andrzej Siewior Cc: Peter Zijlstra , linux-rt-users@vger.kernel.org, linux-kernel@vger.kernel.org, tglx@linutronix.de Subject: Re: [PATCH RT] time/hrtimer: disable that mode check Message-ID: <20171213114956.64ceddf6@gandalf.local.home> In-Reply-To: <20171213142257.ok7xdag5p4wp4mfo@linutronix.de> References: <20171213135835.rwtcf7kj45a6x4tt@linutronix.de> <20171213141919.ouizpou5erye4fgz@hirez.programming.kicks-ass.net> <20171213142257.ok7xdag5p4wp4mfo@linutronix.de> X-Mailer: Claws Mail 3.14.0 (GTK+ 2.24.31; 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 Wed, 13 Dec 2017 15:22:57 +0100 Sebastian Andrzej Siewior wrote: > On 2017-12-13 15:19:19 [+0100], Peter Zijlstra wrote: > > On Wed, Dec 13, 2017 at 02:58:35PM +0100, Sebastian Andrzej Siewior wrote: > > > On -RT we push all timers by default into the soft-mode. The > > > "start/update" code does not use that SOFT bit so we always see that > > > warning. > > > > Not _all_ timers I hope? There's a few the scheduler and perf use that > > really should stay in hardirq context. > That is correct, a few ones remain in the hardirq context. > As Sebastian said, by default they are in SOFT mode. I'm assuming the ones that are not have some logic to make sure they are not in SOFT mode. -- Steve