From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx3.mail.elte.hu (mx3.mail.elte.hu [157.181.1.138]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 44328DDDE1 for ; Sat, 6 Sep 2008 22:04:11 +1000 (EST) Date: Sat, 6 Sep 2008 14:03:47 +0200 From: Ingo Molnar To: Steven Rostedt Subject: Re: [PATCH 0/2] ftrace: fixes for PPC Message-ID: <20080906120346.GA30964@elte.hu> References: <20080906050602.409299112@goodmis.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <20080906050602.409299112@goodmis.org> Cc: Peter Zijlstra , linux-kernel@vger.kernel.org, David Miller , linuxppc-dev@ozlabs.org, Thomas Gleixner , Andrew Morton List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , * Steven Rostedt wrote: > I spent the day chasing a bug that would hang PPC on boot up when > ftrace is configured in. I found that it was simply a stupid bug I did > to handle the non MCOUNT_RECORD case. Since I was testing only on x86, > and the MCOUNT_RECORD is automatically set for dynamic ftrace if it is > available, I did not test the case where MCOUNT_RECORD was not set. > > I have not finished porting MCOUNT_RECORD to PPC, but have found that > it has caused some issues for archs that do not support it yet. > > This patch series handles these cases. applied to tip/tracing/ftrace, thanks Steve. Ingo