linux-kernel - Re: smart gcc inliner...

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Message-ID: <460D6778.6000207@goop.org>
Date:	Fri, 30 Mar 2007 12:39:36 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Adrian Bunk <bunk@...sta.de>
CC:	Andi Kleen <andi@...stfloor.org>,
	Paweł Sikora <pluto@...k.net>,
	Linux Kernel list <linux-kernel@...r.kernel.org>
Subject: Re: smart gcc inliner...

Adrian Bunk wrote:
> On Tue, Mar 27, 2007 at 07:55:38PM -0700, Jeremy Fitzhardinge wrote:
>   
>> Andi Kleen wrote:
>>     
>>> init functions should only ever be called from other init functions.
>>>
>>> So this should not happen. If it happens the annotations need to be fixed.
>>>       
>> I've seen some versions of gcc inline weak functions too.
>>     
>
> Please be more precise:
> - gcc version
> - example code
> - bug number in the gcc Bugzilla
>   

Sorry, it was a while ago, and I didn't take the time to fully report
it.  It was FC6 on x86_64, doing a 32-bit cross-build.  I'll see if I
can repro it.

> This would also help understanding what you are talking about:
> - Did gcc inline a global function?
> - Or was a static function declared as weak (which might be an error
>   by the programmer)?
> - ...
>   

It was, specifically, smp_setup_processor_id getting inlined into
start_kernel.

    J
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