linux-kernel - Re: Question about usage of RCU in the input layer

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Message-ID: <20090320060128.GC6167@in.ibm.com>
Date:	Fri, 20 Mar 2009 11:31:28 +0530
From:	Dipankar Sarma <dipankar@...ibm.com>
To:	Eric Dumazet <dada1@...mosbay.com>
Cc:	paulmck@...ux.vnet.ibm.com, Arjan van de Ven <arjan@...radead.org>,
	linux-input@...r.kernel.org, dmitry.torokhov@...il.com,
	linux-kernel@...r.kernel.org
Subject: Re: Question about usage of RCU in the input layer

On Fri, Mar 20, 2009 at 06:28:11AM +0100, Eric Dumazet wrote:
> Paul E. McKenney a écrit :
> Hmm... point is to make linux boot as fast as possible, so ...
> 
> Use a special variant of udelay() in offending drivers that make appropriate
> RCU call to increment quiescent state ?

It may not be safe to do this it is in a RCU read-side critical section.

Thanks
Dipankar
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