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

Andi Kleen
2009-01-09T17:33:22Z

On Fri, Jan 09, 2009 at 10:28:01AM -0700, Matthew Wilcox wrote:
> On Fri, Jan 09, 2009 at 06:20:11PM +0100, Andi Kleen wrote:
> > Also cc Honza in case he has comments (you might want
> > to review more of the thread in the archives)
>
> I think this particular bug is already known and discussed:

I thought so initially too, but:

>
> http://gcc.gnu.org/ml/gcc/2008-12/msg00365.html
>
> and it hints at being fixed with gcc 4.4. Does anyone want to test
> that?

Hugh already tested with 4.4 and it didn't work well. At least
a lot of the low level asm inlines were not inlined.
So it looks like it's still mistuned for the kernel.

-Andi

--
ak@linux.intel.com