From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Zijlstra Subject: Re: [PATCH v3 4/4] nmi_backtrace: generate one-line reports for idle cpus Date: Wed, 23 Mar 2016 08:53:59 +0100 Message-ID: <20160323075359.GH6356@twins.programming.kicks-ass.net> References: <1458667179-19630-1-git-send-email-cmetcalf@mellanox.com> <54039485.X1biSGXPBa@vostro.rjw.lan> <20160322224557.GG6356@twins.programming.kicks-ass.net> <8028886.DUEJzF47F1@vostro.rjw.lan> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from bombadil.infradead.org ([198.137.202.9]:59049 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752820AbcCWHyK (ORCPT ); Wed, 23 Mar 2016 03:54:10 -0400 Content-Disposition: inline In-Reply-To: <8028886.DUEJzF47F1@vostro.rjw.lan> Sender: linux-arch-owner@vger.kernel.org List-ID: To: "Rafael J. Wysocki" Cc: Chris Metcalf , Russell King , Thomas Gleixner , Aaron Tomlin , Ingo Molnar , Andrew Morton , Daniel Thompson , x86@kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org On Wed, Mar 23, 2016 at 01:50:00AM +0100, Rafael J. Wysocki wrote: > > > Well, what about intel_idle_freeze()? Or do we not care? > > > > I argued against it; when you're suspended the NMI watchdog is stopped > > too. > > Is it also stopped for suspend-to-idle? I'm not sure about that. > > Where do I need to look to find out? Hmm I have memories of writing a patch to that effect when we were starting with that suspend-to-idle stuff, because people didn't like being woken up all the time. But now that I look I cannot find it either..