linux-kernel - Re: [RFC][PATCH 2/6] x86, nmi: create new NMI handler routines

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Message-ID: <1314109043.8002.58.camel@twins>
Date:	Tue, 23 Aug 2011 16:17:23 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Don Zickus <dzickus@...hat.com>
Cc:	x86@...nel.org, Andi Kleen <andi@...stfloor.org>,
	Robert Richter <robert.richter@....com>, ying.huang@...el.com,
	LKML <linux-kernel@...r.kernel.org>, jason.wessel@...driver.com
Subject: Re: [RFC][PATCH 2/6] x86, nmi: create new NMI handler routines

On Tue, 2011-08-23 at 10:14 -0400, Don Zickus wrote:

> Maybe I don't understand kfree_rcu, but what advantage do I have by
> placing rcu_head into nmiaction that never gets used except on unregister
> (which rarely happens to begin with)?

you don't have to wait for sync_rcu(), but you're right, this is an
absolute slow patch and we don't care.
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