From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758708AbYGRQ6U (ORCPT ); Fri, 18 Jul 2008 12:58:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755799AbYGRQ6N (ORCPT ); Fri, 18 Jul 2008 12:58:13 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:45342 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752421AbYGRQ6M (ORCPT ); Fri, 18 Jul 2008 12:58:12 -0400 Date: Fri, 18 Jul 2008 18:57:55 +0200 From: Ingo Molnar To: Steven Rostedt Cc: LKML , Linus Torvalds , Andrew Morton , Thomas Gleixner , Peter Zijlstra Subject: Re: [PATCH] ftrace: only trace preempt off with preempt tracer Message-ID: <20080718165755.GG6875@elte.hu> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.18 (2008-05-17) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Steven Rostedt wrote: > When PREEMPT_TRACER and IRQSOFF_TRACER are both configured and irqsoff > tracer is running, the preempt_off sections might also be traced. > > Thanks to Andrew Morton for pointing out my mistake of spin_lock > disabling interrupts while he was reviewing ftrace.txt. Seems that my > example I used actually hit this bug. applied to tip/tracing/urgent - thanks Steve. Ingo