From: ananaza@iki•fi (Antti Miettinen)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH] arch_timer: Move delay timer to drivers clocksource
Date: Fri, 17 Jan 2014 12:30:48 +0200 [thread overview]
Message-ID: <874n52zyqv.fsf@iki.fi> (raw)
In-Reply-To: <52D8F403.9070602@linaro.org> (Daniel Lezcano's message of "Fri, 17 Jan 2014 10:12:35 +0100")
Daniel Lezcano <daniel.lezcano@linaro•org> writes:
> On 01/17/2014 10:07 AM, Antti Miettinen wrote:
>> Will Deacon <will.deacon@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
prev parent reply other threads:[~2014-01-17 10:30 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-15 13:07 [PATCH] arch_timer: Move delay timer to drivers clocksource Prashant Gaikwad
2014-01-15 15:41 ` Rob Herring
2014-01-16 4:45 ` Prashant Gaikwad
2014-01-15 15:45 ` Will Deacon
2014-01-16 5:19 ` Prashant Gaikwad
2014-01-16 12:16 ` Will Deacon
2014-01-17 9:07 ` Antti Miettinen
2014-01-17 9:12 ` Daniel Lezcano
2014-01-17 10:11 ` Prashant Gaikwad
2014-01-17 10:15 ` Daniel Lezcano
2014-01-17 11:37 ` Prashant Gaikwad
2014-01-17 12:08 ` Daniel Lezcano
2014-01-17 13:40 ` Prashant Gaikwad
2014-01-17 18:36 ` Stephen Boyd
2014-01-20 14:42 ` Daniel Lezcano
2014-01-20 14:56 ` Lorenzo Pieralisi
2014-01-20 15:28 ` Daniel Lezcano
2014-01-21 8:20 ` Prashant Gaikwad
2014-01-21 8:40 ` Daniel Lezcano
2014-01-21 8:53 ` Prashant Gaikwad
2014-01-19 5:20 ` Antti Miettinen
2014-01-20 14:41 ` Daniel Lezcano
2014-01-21 8:10 ` Prashant Gaikwad
2014-01-21 8:25 ` Daniel Lezcano
2014-01-17 10:30 ` Antti Miettinen [this message]
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