linux-kernel - Re: [PATCH v2 2/2] lockdep: Fix merging of hlocks with non-zero references

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Message-ID: <20190527161037.GG2623@hirez.programming.kicks-ass.net>
Date:   Mon, 27 May 2019 18:10:37 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Imre Deak <imre.deak@...el.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Ville Syrjälä 
        <ville.syrjala@...ux.intel.com>, Ingo Molnar <mingo@...hat.com>,
        Will Deacon <will.deacon@....com>
Subject: Re: [PATCH v2 2/2] lockdep: Fix merging of hlocks with non-zero
 references

On Mon, May 27, 2019 at 06:44:29PM +0300, Imre Deak wrote:
> On Mon, May 27, 2019 at 05:14:38PM +0200, Peter Zijlstra wrote:
> > On Fri, May 24, 2019 at 11:15:09PM +0300, Imre Deak wrote:

> > > -				if (DEBUG_LOCKS_WARN_ON(hlock->references == UINT_MAX))
> > 
> > What tree is this against?
> 
> I just used our
> 	git://anongit.freedesktop.org/drm-tip
> and the most recent upstream commit in that is:
> 

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/include/linux/lockdep.h#n270