From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755304AbbIHPhn (ORCPT ); Tue, 8 Sep 2015 11:37:43 -0400 Received: from smtprelay0251.hostedemail.com ([216.40.44.251]:39351 "EHLO smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754822AbbIHPhl (ORCPT ); Tue, 8 Sep 2015 11:37:41 -0400 X-Session-Marker: 726F737465647440676F6F646D69732E6F7267 X-Spam-Summary: 2,0,0,,d41d8cd98f00b204,rostedt@goodmis.org,:::::::,RULES_HIT:41:355:379:541:599:800:960:973:988:989:1260:1277:1311:1313:1314:1345:1359:1437:1515:1516:1518:1534:1538:1593:1594:1711:1714:1730:1747:1777:1792:2393:2553:2559:2562:3138:3139:3140:3141:3142:3350:3622:3865:3867:3868:3871:3872:3874:5007:6261:7875:10004:10400:10848:10967:11232:11658:11914:12517:12519:12740:13069:13311:13357:13618:21080,0,RBL:none,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fn,MSBL:0,DNSBL:none,Custom_rules:0:0:0 X-HE-Tag: wool03_5fb0d3b703c57 X-Filterd-Recvd-Size: 1468 Date: Tue, 8 Sep 2015 11:37:36 -0400 From: Steven Rostedt To: Sasha Levin Cc: Minfei Huang , mingo@redhat.com, linux-kernel@vger.kernel.org Subject: Re: [PATCH] ftrace: allow dumping traces without tracking trace started cpus Message-ID: <20150908113736.537ed062@gandalf.local.home> In-Reply-To: <55EEEDEB.3080508@oracle.com> References: <1441385156-27279-1-git-send-email-sasha.levin@oracle.com> <20150906092016.GA20381@dhcp-128-25.nay.redhat.com> <55EC4DD7.80208@oracle.com> <20150908101344.09656618@gandalf.local.home> <55EEEDEB.3080508@oracle.com> X-Mailer: Claws Mail 3.11.1 (GTK+ 2.24.28; 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 Tue, 08 Sep 2015 10:17:15 -0400 Sasha Levin wrote: > Yes, I agree that it would be nicer if we init it rather than ignore it, > but I wanted to avoid trying to do an extra allocation on this path since > it usually happens when the system oopsed, so allocations might be reliable > and we want to get the ftrace buffer out as reliably as we can. Fair enough. I'll keep the patch as is then. -- Steve