Messages in this thread | | | Subject | Re: [RFC PATCH v3 0/5] powerpc: Support context tracking for Power pSeries | From | Li Zhong <> | Date | Mon, 13 May 2013 17:22:50 +0800 |
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On Mon, 2013-05-13 at 18:59 +1000, Benjamin Herrenschmidt wrote: > On Mon, 2013-05-13 at 16:03 +0800, Li Zhong wrote: > > > > To my understanding, it is used to enable RCU user extended quiescent > > state, so RCU on that cpu doesn't need scheduler ticks. And together > > with some other code(already in 3.10), we are able to remove the ticks > > in some cases (e.g. only 1 task running on the cpu, with some other > > limitations). > > Ok, sounds interesting. Once you fix the little cosmetic issue, I don't > see any reason not to merge them as it's basically wiring up an existing > feature (in that regard the patches are pretty straightforward) and I > assume the overhead is only there when you enable it.
Thanks for your support, Ben.
Yes, there should be no overhead if not enabled.
Thanks, Zhong
> > Cheers, > Ben. > >
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