linux-kernel - Re: [PATCH 0/2] ARM: omap2+: omap_hwmod: Fix false lockdep warning

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Message-ID: <20150209092332.GO5029@twins.programming.kicks-ass.net>
Date:	Mon, 9 Feb 2015 10:23:32 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Peter Ujfalusi <peter.ujfalusi@...com>
Cc:	Tony Lindgren <tony@...mide.com>, paul@...an.com,
	linux-omap@...r.kernel.org, mingo@...hat.com,
	linux-kernel@...r.kernel.org, balbi@...com,
	linux-arm-kernel@...ts.infradead.org, Tero Kristo <t-kristo@...com>
Subject: Re: [PATCH 0/2] ARM: omap2+: omap_hwmod: Fix false lockdep warning

On Mon, Feb 09, 2015 at 10:27:32AM +0200, Peter Ujfalusi wrote:
> As I recall there is a plan to remove the hwmod static database and move it or
> generate it from DT? Not sure when and how this will be done, but will it
> affect the lockdep_set_class() way?

Yes, struct lock_class_key wants to be in static storage.

So you could still allocate a few of those statically and then use them
where appropriate, but it'd going to be more work.

The advantage of having the 1:1 relation is that any parent hierarchy
works naturally.
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