[PATCH] arch_timer: Move delay timer to drivers clocksource
Antti Miettinen
ananaza at iki.fi
Fri Jan 17 05:30:48 EST 2014
Daniel Lezcano <daniel.lezcano at linaro.org> writes:
> On 01/17/2014 10:07 AM, Antti Miettinen wrote:
>> Will Deacon <will.deacon at arm.com> writes:
>>> Why can't you use the C3STOP feature so that the arch-timer isn't used when
>>> you go idle?
>>
>> That would mean falling back to broadcast timer, right? That's not
>> necessarily on the local CPU so wakeups would often wake two CPUs.
>
> You can prevent that if the hardware supports it with the
> CLOCK_EVT_DYNIRQ flag on the broadcast timer.
CLOCK_EVT_FEAT_DYNIRQ seems to be the flag. Cool, thanks.
--Antti
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