linux-kernel - Re: [RFC/PATCH] Prevent wasting time to find out get_parent

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Date:	Tue, 24 Apr 2012 23:32:31 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Minho Ban <mhban@...sung.com>
Cc:	Josh Triplett <josh@...htriplett.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
	Frederic Weisbecker <fweisbec@...il.com>,
	Paul Turner <pjt@...gle.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Hidetoshi Seto <seto.hidetoshi@...fujitsu.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Subject: Re: [RFC/PATCH] Prevent wasting time to find out get_parent_ip

On Wed, 2012-04-25 at 12:21 +0900, Minho Ban wrote:
> > 
> > Or, how about declaring get_parent_ip with the GCC "pure" attribute?
> > That would tell GCC that it can safely eliminate calls to the function.
> > 
> > - Josh Triplett
> > 
> 
> Thank you for alternative method, but I'm afraid this could not cover the CALLER_ADDR.

That's fine. I personally prefer the macro with the comment as that is
not as subtle of a fix. It's the most straight forward.

-- Steve


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