Messages in this thread | | | Date | Tue, 19 Jul 2016 10:47:37 +0200 (CEST) | From | Thomas Gleixner <> | Subject | Re: [PATCH]time: Optimize nohz idle enter |
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On Thu, 14 Jul 2016, Gaurav Jindal (Gaurav Jindal) wrote: > > tick_nohz_start_idle is called before checking the condition if the idle tick > can be stopped. In case when can_stop_idle_tick returns 0, the function called > is of no use thus a extra call doing nothing. > > Shifting calling of function tick_nohz_start_idle inside the if condition makes > sure that corresponding operations are done only if idle tick can be actually > stopped. Observance for 1 minute on arm64 architecture shows that shifting code > can prevent 1.5% of extra calls thus optimizing the idle call sequence.
Nice.
> Signed-off-by: gaurav jindal<gaurav.jindal@spreadtrum.com> > Signed-off-by: sanjeev yadav<sanjeev.yadav@spreadtrum.com>
This SOB chain is wrong. Sanjeev did not send the patch and is not the author. Please clarify.
Thanks,
tglx
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