linux-kernel - Re: [PATCH -tip 1/2] [PATCH -tip 1/2] sched: Reinstate group names in /proc/sched

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Message-ID: <1294831112.19601.8.camel@laptop>
Date:	Wed, 12 Jan 2011 12:18:32 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	bharata@...ux.vnet.ibm.com
Cc:	Yong Zhang <yong.zhang0@...il.com>, linux-kernel@...r.kernel.org,
	Mike Galbraith <efault@....de>, Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH -tip 1/2] [PATCH -tip 1/2] sched: Reinstate group names
 in /proc/sched_debug.

On Wed, 2011-01-12 at 13:19 +0530, Bharata B Rao wrote:
> 
> We could, but I guess its not a recommended practice anymore to depend on
> spinlocks to protect rcu readside.

Not only is it not recommended, its a flat out bug for PREEMPT_RCU.
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