linux-kernel - Re: [PATCH RESEND 0/3] tracing/mm: Fix suspicious rcu_dereference

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Message-ID: <20150514163802.5806d843@gandalf.local.home>
Date:	Thu, 14 May 2015 16:38:02 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Shreyas B Prabhu <shreyas@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org, mingo@...hat.com,
	aneesh.kumar@...ux.vnet.ibm.com, paulmck@...ux.vnet.ibm.com,
	preeti@...ux.vnet.ibm.com, mgorman@...e.de, namhyung@...nel.org,
	lizf@...fujitsu.com, acme@...hat.com
Subject: Re: [PATCH RESEND 0/3] tracing/mm: Fix suspicious
 rcu_dereference_check() usage warnings

On Thu, 14 May 2015 13:08:23 -0700
Andrew Morton <akpm@...ux-foundation.org> wrote:

> 
> Please also confirm that these tracepoints cannot be called
> from preemptible contexts.  Or switch to raw_smp_processor_id().

I checked. They can be called from preemptible context, and suggested
that the next patch uses raw_smp_processor_id().

-- Steve

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