linux-kernel - Re: [PATCH 01/11] ftrace: handle generic arch calls

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Date:	Wed, 29 Oct 2008 22:31:33 +0200
From:	Adrian Bunk <bunk@...nel.org>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Sam Ravnborg <sam@...nborg.org>,
	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Abhishek Sagar <sagar.abhishek@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Steven Rostedt <srostedt@...hat.com>
Subject: Re: [PATCH 01/11] ftrace: handle generic arch calls

On Wed, Oct 29, 2008 at 04:23:34PM -0400, Steven Rostedt wrote:
> 
> On Wed, 29 Oct 2008, Adrian Bunk wrote:
> > > > 
> > > > Since x86 is the ambiguous case, I made it the one that would be converted 
> > > > to i386 or x86_64 since those could be passed in directly.
> > > The trick is usually to replace use of ARCH with SRCARCH.
> > 
> > That won't help - what he wants to know is whether he's on 32bit or
> > on 64bit.
> 
> I will still get the "bits" parameter.

Ah, I didn't get this bit from your email.

> The issue that we are talking about 
> here is that I have this ugly if statement that deals with the fact that 
> we can get "x86", "x86_64" or "i386" passed in as the ARCH. I'm guessing 
> if we switch ARCH to SRCARCH then we can just test against x86 and bits?

Yes.

And as a bonus you will automatically get the correct output when you'll 
add support for UML.

> -- Steve

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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