linux-kernel - Re: [RFC PATCH] seqlock: add lockdep support

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Message-ID: <20130918091504.GM12926@twins.programming.kicks-ass.net>
Date:	Wed, 18 Sep 2013 11:15:04 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Lin Ming <minggr@...il.com>
Cc:	Ingo Molnar <mingo@...nel.org>,
	"; John Stultz" <john.stultz@...aro.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH] seqlock: add lockdep support

On Wed, Sep 18, 2013 at 02:57:13PM +0800, Lin Ming wrote:
> Hi,
> 
> lockdep support for seqlock was discussed at:
> http://marc.info/?l=linux-kernel&m=137875860600648&w=2
> 
> This is very draft patch to add lockdep support for seqlock.
> Actually, it doesn't work yet. I throw it out to get comments and help.
> 
> TODO:
> - fix seqlock usage in vdso code
> 
> I got below with this patch applied.
> There should be something wrong with this patch.
> Any idea?

You're aware of John Stultz's patches? 

lkml.kernel.org/r/1379117948-7385-1-git-send-email-john.stultz@...aro.org
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