Messages in this thread | | | Date | Fri, 16 Nov 2012 10:09:56 -0800 | From | "Paul E. McKenney" <> | Subject | Re: [PATCH v3 6/9] rcu: use __this_cpu_read helper instead of per_cpu_ptr(p, raw_smp_processor_id()) |
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On Fri, Nov 16, 2012 at 05:42:14PM +0000, Christoph Lameter wrote: > > On Fri, 16 Nov 2012, Paul E. McKenney wrote: > > > If you either show me some significant performance benefits or get me > > an independent Tested-by, in both cases on a range of hardware (e.g., > > x86 on the one hand and ARM or Power on the other), then I will queue it. > > Just putting the code generated for x86 before and after side > by side would be enough to convince you I think.
If accompanied by similar before/after code for ARM or Power, sure.
Thanx, Paul
> > I wasn't prioritizing this one very high because it does not appear > > to be on any sort of fastpath. If I am wrong about that, then you > > have a good performance-benefit case, right? ;-) > > I do not think this needs to be a priority item. Just stick it in the tree > somewhere to merge for the next merge period. >
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