From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754347Ab3C0UFq (ORCPT ); Wed, 27 Mar 2013 16:05:46 -0400 Received: from www.linutronix.de ([62.245.132.108]:37758 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753994Ab3C0UFp (ORCPT ); Wed, 27 Mar 2013 16:05:45 -0400 Date: Wed, 27 Mar 2013 21:05:38 +0100 (CET) From: Thomas Gleixner To: Andrew Morton cc: Nathan Zimmer , linux-kernel@vger.kernel.org, John Stultz , Stephen Boyd Subject: Re: [PATCH 2/2] timer_list: convert timer list to be a proper seq_file In-Reply-To: <20130327121412.f589d0cc105843284e1d8eb5@linux-foundation.org> Message-ID: References: <1364345790-14577-1-git-send-email-nzimmer@sgi.com> <1364345790-14577-3-git-send-email-nzimmer@sgi.com> <20130327121412.f589d0cc105843284e1d8eb5@linux-foundation.org> User-Agent: Alpine 2.02 (LFD 1266 2009-07-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 27 Mar 2013, Andrew Morton wrote: > On Tue, 26 Mar 2013 19:56:30 -0500 Nathan Zimmer wrote: > > +void sysrq_timer_list_show(void) > > +{ > > + u64 now = ktime_to_ns(ktime_get()); > > + int cpu; > > + > > + timer_list_header(NULL, now); > > > > for_each_online_cpu(cpu) > > hm, it seems this code is taking the optimistic approach to CPU hotplug. Right. It's not really relevant. The data structures are not going away and this can cope with the fact that the cpu went away under us. Thanks, tglx