linux-kernel - Re: [PATCH 2/3] powerpc: Make it possible to safely select CONFIG_FRAME

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Message-Id: <1233796531.4612.35.camel@pasglop>
Date:	Thu, 05 Feb 2009 12:15:31 +1100
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Steven Rostedt <srostedt@...hat.com>
Cc:	Anton Vorontsov <avorontsov@...mvista.com>,
	Ingo Molnar <mingo@...e.hu>, Paul Mackerras <paulus@...ba.org>,
	linuxppc-dev@...abs.org, linux-kernel@...r.kernel.org,
	linux-rt-users@...r.kernel.org
Subject: Re: [PATCH 2/3] powerpc: Make it possible to safely select
 CONFIG_FRAME_POINTER

On Wed, 2009-02-04 at 19:35 -0500, Steven Rostedt wrote:
> On Thu, 2009-02-05 at 11:31 +1100, Benjamin Herrenschmidt wrote:
> > On Wed, 2009-02-04 at 18:08 +0300, Anton Vorontsov wrote:
> > > Remove -fno-omit-frame-pointer flag from CFLAGS.
> > > Remove -fno-omit-frame-pointer workarounds.
> > 
> > But what about -pg -requires -fno-omit-frame-pointer ?
> 
> I don't think it requires -fno-omit-frame-pointer. It is just
> incompatible with -fomit-frame-pointer.

>>From a quick test, you seem to be right.

Now the question of course is whether -pg will internally trigger
the bug for which we need the workaround tho...

Ben.

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