Re: [PATCH] x86: pgtable_32.h - prototype and section mismatchfixes

From: Ingo Molnar
Date: Mon Apr 14 2008 - 04:53:30 EST



* Sam Ravnborg <sam@xxxxxxxxxxxx> wrote:

> > hm, that's an interesting case: we need those annotations probably
> > because gcc decided to not inline those functions. (this is possible
> > via the new CONFIG_OPTIMIZE_INLINING=y option) Sam, what's your take
> > on that?
>
> gcc uses different heuristics for inlining between the different
> versions. Therefore to achieve somehow predictable results I added
> -fno-inline-functions-called-once when CONFIG_DEBUG_SECTION_MISMATCH
> is enabled.
>
> So in the above case for any normal kernel build we would see that gcc
> inlined the above and everything is fine. But for the
> CONFIG_DEBUG_SECTION_MISMTCH cases we do not inline and thus we see
> that we have a section mismatch.

ah, ok. So i guess this will result in a few isolated cases of __init
annotations added to inline functions - Jacek fixed one such case - but
it should not result in the general spreading of __init annotations to
inline functions, correct? (which i was worried about)

Ingo
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