From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754356AbZEXVlf (ORCPT ); Sun, 24 May 2009 17:41:35 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751720AbZEXVl1 (ORCPT ); Sun, 24 May 2009 17:41:27 -0400 Received: from bombadil.infradead.org ([18.85.46.34]:56898 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751405AbZEXVl1 (ORCPT ); Sun, 24 May 2009 17:41:27 -0400 Date: Sun, 24 May 2009 17:41:26 -0400 From: Christoph Hellwig To: Steven Rostedt Cc: linux-kernel@vger.kernel.org, Ingo Molnar , Andrew Morton , Frederic Weisbecker , Zhao Lei Subject: Re: [PATCH 1/2] ftrace: Add task_comm support for trace_event Message-ID: <20090524214125.GA10195@infradead.org> References: <20090521141813.123165156@goodmis.org> <20090521141914.208848802@goodmis.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090521141914.208848802@goodmis.org> User-Agent: Mutt/1.5.18 (2008-05-17) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, May 21, 2009 at 10:18:14AM -0400, Steven Rostedt wrote: > From: Zhaolei > > If we use trace_event alone(without function trace, .etc), > it can't output enough task command information. For some reason I still only see the process name sometimes but not always. It is more likely to appear for later entries than earlier ones (and no, this is not an IRQ context problem as this is with my work in progress XFS trace events, and XFS runs no major piece of code in IRQ context)