From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 0/7] Add common cpuidle code for consolidation.
Date: Sun, 29 Jan 2012 15:34:59 +0000 [thread overview]
Message-ID: <20120129153459.GF15455@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <87fwf3ehi3.fsf@ti.com>
On Wed, Jan 25, 2012 at 10:58:44AM -0800, Kevin Hilman wrote:
> It might be the case now that with syscore_ops, the timekeeping
> suspend/resume is happening early enought that the system will not go
> idle before the syscore_ops are done, so you would never see this WARN.
> That being said, any platforms that add syscore_ops could introduce
> callbacks that could potentially allow a CPU to hit idle, and you'd get
> this WARN from the timekeeping susbystem.
I would really hope that doesn't happen, because syscore_ops stuff will
be called with IRQs off - and you're not allowed to enable interrupts
in the syscore ops callbacks.
So if you did hit idle, you wouldn't be able to receive any interrupt
to wake you from idle state.
next prev parent reply other threads:[~2012-01-29 15:34 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-24 4:37 [PATCH v3 0/7] Add common cpuidle code for consolidation Robert Lee
2012-01-24 4:37 ` [PATCH v3 1/7] cpuidle: Add common init interface and idle functionality Robert Lee
2012-01-24 14:36 ` Rob Herring
2012-01-24 22:43 ` Rob Lee
2012-01-24 20:16 ` Kevin Hilman
2012-01-24 23:10 ` Rob Lee
2012-01-24 23:46 ` Turquette, Mike
2012-01-25 2:03 ` Rob Lee
2012-01-24 23:49 ` Daniel Lezcano
2012-01-25 2:38 ` Rob Lee
2012-01-25 14:52 ` Daniel Lezcano
2012-01-24 4:37 ` [PATCH v3 2/7] ARM: exynos: Modify to use new common cpuidle code Robert Lee
2012-01-29 4:47 ` Barry Song
2012-01-24 4:37 ` [PATCH v3 3/7] ARM: shmobile: " Robert Lee
2012-01-24 4:37 ` [PATCH v3 4/7] ARM: kirkwood: " Robert Lee
2012-01-24 4:37 ` [PATCH v3 5/7] ARM: davinci: " Robert Lee
2012-01-24 4:37 ` [PATCH v3 6/7] ARM: imx: Init imx5 gpc_dvfs clock for global use Robert Lee
2012-01-24 4:37 ` [PATCH v3 7/7] ARM: imx: Add imx5 cpuidle implementation Robert Lee
2012-01-24 20:08 ` [PATCH v3 0/7] Add common cpuidle code for consolidation Kevin Hilman
2012-01-24 20:17 ` Mark Brown
2012-01-25 0:41 ` Kevin Hilman
2012-01-25 0:46 ` Rob Lee
2012-01-25 18:58 ` Kevin Hilman
2012-01-29 15:34 ` Russell King - ARM Linux [this message]
2012-01-31 3:02 ` Rob Lee
2012-01-31 21:55 ` Kevin Hilman
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