Messages in this thread | | | Date | Thu, 23 Feb 2012 12:04:45 -0800 | Subject | Re: [PATCH] Extend mwait idle to optimize away CAL and RES interrupts to an idle CPU -v1 | From | Venki Pallipadi <> |
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[ Resending without the ugly email client formatting ]
On Thu, Feb 23, 2012 at 1:08 AM, Peter Zijlstra <peterz@infradead.org> wrote: > On Thu, 2012-02-23 at 08:50 +0100, Ingo Molnar wrote: >> * Venkatesh Pallipadi <venki@google.com> wrote: > >> > * We can also eliminate TS_POLLING flag in favor of this. But, that will have >> > a lot more touchpoints and better done as a standlone change. >> >> Should most definitely be done for this series to be acceptble - >> as a preparatory patch in the series, with the feature at the >> end of the series. > > I don't think you can, TS_POLLING still works for idle=poll, whereas > this new stuff requires monitor/mwait. >
Even poll_idle should be able to use this ipiless_wakeup. It just have to poll for an additional IPI_PENDING bit along with need_resched. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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