Messages in this thread | | | Date | Mon, 1 Jul 2013 16:50:50 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH] x86: Use asm-goto to implement mutex fast path on x86-64 |
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On Mon, Jul 01, 2013 at 07:45:41AM -0700, H. Peter Anvin wrote: > Right... brain not awake yet, sorry, and responding from my phone. > > I am not to worried about trading off a bit of additional branch mispredicts if everything else wins, but Ingo does have a valid question if we are measuring the right thing. > > The effect is definitely big enough that it would be good to understand it one way or the other. > > And regardless of the source... nice job!
Yeah, see my other reply. Ingo's way of tracing this doesn't show any speedup. So I need to find out now why do I see the speedup the way I run it.
Keep you posted.
-- Regards/Gruss, Boris.
Sent from a fat crate under my desk. Formatting is fine. --
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