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Date: Wed, 18 Dec 2013 07:45:48 -0800
From: Christoph Hellwig <hch@infradead.org>
To: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>,
        Christoph Hellwig <hch@infradead.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@kernel.org>,
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        John Stultz <john.stultz@linaro.org>, Alex Shi <alex.shi@linaro.org>,
        Kevin Hilman <khilman@linaro.org>
Subject: Re: [PATCH 05/13] rcu: Fix unraised IPI to timekeeping CPU
Message-ID: <20131218154548.GA20852@infradead.org>
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On Wed, Dec 18, 2013 at 04:38:59PM +0100, Frederic Weisbecker wrote:
> I think that Christophe Hellwig had patches to drop csd and make smp.c lockless, I don't
> recall the details though.

I had a patch to use llists, but you still have the csd_lock opencoded
lock.  By coincidence Jan Kara just resent the patch a few minutes ago.