linux-kernel - Re: [PATCH] cpuidle: coupled: fix sleeping while atomic in cpu notifier

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Message-ID: <CAMQu2gzh1=rkTuBr+RRtnzb0m9ZpqSY9X0o92q4BAQXNENoSQw@mail.gmail.com>
Date:	Thu, 26 Jul 2012 09:25:36 +0200
From:	"Shilimkar, Santosh" <santosh.shilimkar@...com>
To:	Colin Cross <ccross@...roid.com>
Cc:	Len Brown <lenb@...nel.org>, Len Brown <len.brown@...el.com>,
	Kevin Hilman <khilman@...com>,
	"Rafael J. Wysocki" <rjw@...k.pl>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] cpuidle: coupled: fix sleeping while atomic in cpu notifier

On Wed, Jul 25, 2012 at 11:20 PM, Colin Cross <ccross@...roid.com> wrote:
> The cpu hotplug notifier gets called in both atomic and non-atomic
> contexts, it is not always safe to lock a mutex.  Filter out all events
> except the six necessary ones, which are all sleepable, before taking
> the mutex.
>
> Signed-off-by: Colin Cross <ccross@...roid.com>
> ---
Agree.
Have you observed any lock-up ?

For that patch itself, Acked-by: Santosh Shilimkar <santosh.shilimkar@...com>
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