linux-kernel - Re: [PATCH 05/13] rcu: Fix unraised IPI to timekeeping CPU

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Message-ID: <20131218154548.GA20852@infradead.org>
Date:	Wed, 18 Dec 2013 07:45:48 -0800
From:	Christoph Hellwig <hch@...radead.org>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Christoph Hellwig <hch@...radead.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...nel.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	John Stultz <john.stultz@...aro.org>,
	Alex Shi <alex.shi@...aro.org>,
	Kevin Hilman <khilman@...aro.org>
Subject: Re: [PATCH 05/13] rcu: Fix unraised IPI to timekeeping CPU

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.
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