linux-kernel - Re: [patch 09/11] s390/irqs: Do not trace arch_local_{*,irq

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Message-ID: <1309870183.26417.170.camel@gandalf.stny.rr.com>
Date:	Tue, 05 Jul 2011 08:49:43 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Martin Schwidefsky <schwidefsky@...ibm.com>
Cc:	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Heiko Carstens <heiko.carstens@...ibm.com>
Subject: Re: [patch 09/11] s390/irqs: Do not trace arch_local_{*,irq_*}
 functions

On Mon, 2011-07-04 at 10:10 +0200, Martin Schwidefsky wrote:
> On Fri, 01 Jul 2011 23:04:44 -0400
> Steven Rostedt <rostedt@...dmis.org> wrote:
> 
> > From: Steven Rostedt <srostedt@...hat.com>
> > 
> > Do not trace arch_local_save_flags(), arch_local_irq_*() and friends.
> > Although they are marked inline, gcc may still make a function out of
> > them and add it to the pool of functions that are traced by the function
> > tracer. This can cause undesirable results (kernel panic, triple faults,
> > etc).
> > 
> > Add the notrace notation to prevent them from ever being traced.
> > 
> > Cc: Martin Schwidefsky <schwidefsky@...ibm.com>
> > Cc: Heiko Carstens <heiko.carstens@...ibm.com>
> > Signed-off-by: Steven Rostedt <rostedt@...dmis.org>
> 
> Applied to git390, thanks Steven.
> 

Thanks Martin,

-- Steve


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