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From: Thomas Gleixner <tglx@linutronix.de>
To: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Damian Eppel <d.eppel@samsung.com>,
	kgene@kernel.org, k.kozlowski@samsung.com,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-samsung-soc@vger.kernel.org, m.szyprowski@samsung.com,
	kyungmin.park@samsung.com, m.jabrzyk@samsung.com,
	stable@vger.kernel.org
Subject: Re: [RESEND PATCH v3] clocksource: exynos_mct: fix for sleeping in atomic ctx handling cpu hotplug notif.
Date: Mon, 29 Jun 2015 11:24:36 +0200 (CEST)	[thread overview]
Message-ID: <alpine.DEB.2.11.1506291123320.4037@nanos> (raw)
In-Reply-To: <55910DA6.4070404@linaro.org>

On Mon, 29 Jun 2015, Daniel Lezcano wrote:

> On 06/26/2015 03:23 PM, Damian Eppel wrote:
> > This is to fix an issue of sleeping in atomic context when processing
> > hotplug notifications in Exynos MCT(Multi-Core Timer).
> > The issue was reproducible on Exynos 3250 (Rinato board) and Exynos 5420
> > (Arndale Octa board).
> > 
> > Whilst testing cpu hotplug events on kernel configured with DEBUG_PREEMPT
> > and DEBUG_ATOMIC_SLEEP we get following BUG message, caused by calling
> > request_irq() and free_irq() in the context of hotplug notification
> > (which is in this case atomic context).
> 
> Applied as a 4.2 fix.
> 
> Should it be tagged stable@ ?

I have that one queued in tip/timers/urgent already. Please check my
branches before picking up stuff.

Thanks,

	tglx


  reply	other threads:[~2015-06-29  9:24 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-12  9:11 [PATCH v2] clocksource: exynos_mct: fix for sleeping in atomic ctx handling cpu hotplug notif Damian Eppel
2015-05-11  1:33 ` Krzysztof Kozlowski
2015-05-11  7:30   ` Daniel Lezcano
2015-05-11 11:18 ` Daniel Lezcano
2015-05-25 15:24   ` Damian Eppel
2015-05-27 12:43     ` Daniel Lezcano
2015-05-28  9:47 ` Marek Szyprowski
2015-05-28 15:37   ` Damian Eppel
2015-06-02 11:11 ` [PATCH v3] " Damian Eppel
2015-06-26 13:23 ` [RESEND PATCH " Damian Eppel
2015-06-26 19:54   ` [tip:timers/urgent] clocksource: exynos_mct: Avoid blocking calls in the cpu hotplug notifier tip-bot for Damian Eppel
2015-06-29  9:19   ` [RESEND PATCH v3] clocksource: exynos_mct: fix for sleeping in atomic ctx handling cpu hotplug notif Daniel Lezcano
2015-06-29  9:24     ` Thomas Gleixner [this message]
2015-06-29 10:14       ` Daniel Lezcano
2015-06-29 11:50     ` Krzysztof Kozlowski

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