Re: [patch] measurements, numbers about CONFIG_OPTIMIZE_INLINING=y impact

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On Fri, 9 Jan 2009, Steven Rostedt wrote:
> 
> I vote for the, get rid of the current inline, rename __always_inline to 
> inline, and then remove all non needed inlines from the kernel.

This is what we do all the time, and historically have always done.

But
 - CONFIG_OPTIMIZE_INLINING=y screws that up
and
 - gcc still inlines even big functions static that have no markings at 
   all.

> We'll, probably start adding a lot more noinlines.

That's going to be very painful. Especially since the cases we really want 
to not inline is the random drivers etc - generally not "hot in the 
cache", but they are the ones that cause the most oopses (not per line, 
but globally - because there's just so many drivers).

		Linus
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