linux-kernel - Re: mmotm 2009-04-24-18-14 uploaded

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Message-Id: <1241089394.19252.6.camel@penberg-laptop>
Date:	Thu, 30 Apr 2009 14:03:14 +0300
From:	Pekka Enberg <penberg@...helsinki.fi>
To:	Nick Piggin <npiggin@...e.de>
Cc:	Valdis.Kletnieks@...edu, Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: mmotm 2009-04-24-18-14 uploaded - NVidia indigestion

On Thu, 2009-04-30 at 12:36 +0200, Nick Piggin wrote:
> On Tue, Apr 28, 2009 at 12:01:21PM -0400, Valdis.Kletnieks@...edu wrote:
> > On Tue, 28 Apr 2009 08:15:57 +0200, Nick Piggin said:
> > 
> > Here's the code (pretty much *all* the code):
> > 
> > > #include <linux/version.h>
> > > #include <linux/utsname.h>
> > > int main() {
> > > 	if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)) {
> > > 		return 0;
> > > 	} else {
> > > 		return 1;
> > > 	}
> > > }
> > 
> > > Hmm, yes if you build without -O, then it appears like the compiler
> > > trips over this. I wouldn't be unhappy with just removing the BUILD_BUG_ON,
> > > but shouldn't the module be using -O[s2]?
> > 
> > It's a little autoconfig chunk from vendor code that determines if we're
> > building on a sane/recent kernel.  Not the sort of thing you'd expect to
> > need to invoke the frikking optimizer for program *correctness* :)
> > 
> > 
> 
> Pekka, can you apply this please?

Applied, thanks!

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