Messages in this thread |  | | Subject | Re: nohz: Update tick instead of restarting tick in tick_nohz_idle_exit() | From | Yunfeng Ye <> | Date | Sat, 28 Nov 2020 08:32:05 +0800 |
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On 2020/11/27 20:15, Frederic Weisbecker wrote: > On Mon, Nov 23, 2020 at 09:22:08PM +0800, Yunfeng Ye wrote: >> In realtime scenarios, the "nohz_full" parameter is configured. Tick >> interference is not expected when there is only one realtime thread. >> But when the idle thread is switched to the realtime thread, the tick >> timer is restarted always. >> >> So on the nohz full mode, it is unnecessary to restart the tick timer >> when there is only one realtime thread. Adding can_stop_full_tick() >> before restarting the tick, if it return true, keep tick stopped. >> >> Signed-off-by: Yunfeng Ye <yeyunfeng@huawei.com> > > We can indeed stop the tick and avoid it to be re-armed needlessly at this > point. > > I'm taking your patch, I may just edit it a little and resend it. > Ok, thanks.
> Thanks! > . >
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