Messages in this thread | | | Date | Fri, 27 Mar 2015 10:19:54 +0530 | Subject | Re: [RFC] vmstat: Avoid waking up idle-cpu to service shepherd work | From | Viresh Kumar <> |
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On 27 March 2015 at 01:48, Andrew Morton <akpm@linux-foundation.org> wrote: > Shouldn't this be viewed as a shortcoming of the core timer code?
Yeah, it is. Some (not so pretty) solutions were tried earlier to fix that, but they are rejected for obviously reasons [1].
> vmstat_shepherd() is merely rescheduling itself with > schedule_delayed_work(). That's a dead bog simple operation and if > it's producing suboptimal behaviour then we shouldn't be fixing it with > elaborate workarounds in the caller?
I understand that, and that's why I sent it as an RFC to get the discussion started. Does anyone else have got another (acceptable) idea to get this resolved ?
-- viresh
[1] http://lists.linaro.org/pipermail/linaro-kernel/2013-November/008866.html
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