linux-kernel - Re: [PATCH] cpuidle: (POWER) Replace pseries_notify_cpuidle_add call with a elegant notifier to fix lockdep problem in start

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Message-ID: <1337561378.2458.3.camel@pasglop>
Date:	Mon, 21 May 2012 10:49:38 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Deepthi Dharwar <deepthi@...ux.vnet.ibm.com>
Cc:	Li Zhong <zhong@...ux.vnet.ibm.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Paul Mackerras <paulus@...ba.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	PowerPC email list <linuxppc-dev@...ts.ozlabs.org>
Subject: Re: [PATCH] cpuidle: (POWER) Replace pseries_notify_cpuidle_add
 call with a elegant notifier to fix lockdep problem in start_secondary

On Mon, 2012-05-21 at 10:47 +1000, Benjamin Herrenschmidt wrote:

> Any reason why you don't do cpuidle_disable_device() when the
> CPU is going offline and cpuidle_enable_device() when it's coming
> back ?
> 
> I'm applying the patch for now since it fixes a real problem but
> if the above makes sense, please send a followup fix.

No I'm not ... it's damaged in some odd ways (some whitespace
missing here or there among others). Please resend a fixed one.

Cheers,
Ben.


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