On Wednesday 27 September 2006 23:38, Linus Torvalds wrote: > > On Wed, 27 Sep 2006, Andi Kleen wrote: > > > > It doesn't matter much because these days this stuff is all out of lined > > anyways and in a single function. And the dynamic branch predictor > > in all modern CPUs will usually cache the decision (unlocked) there. > > Ahh, good point. Once there's only one copy, the branch predictor will get > it right (and the code size won't much matter)
As a postscript I (unintentionally) bended the truth on that one actually yesterday. Sorry for that. Semaphores are still inline, unlike spinlocks. However if the spinlocks are out of line I see no reason to keep semaphores inline either, so perhaps it would be better to just move them. Then my argument above would actually work :) For some reason the unwinder also still seems to get stuck on it :/ -Andi - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
