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. > > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
