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Date: Wed, 1 Mar 2017 11:45:48 +0100
From: Peter Zijlstra <peterz@infradead.org>
To: Byungchul Park <byungchul.park@lge.com>
Cc: mingo@kernel.org, tglx@linutronix.de, walken@google.com,
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        iamjoonsoo.kim@lge.com, akpm@linux-foundation.org, npiggin@gmail.com,
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Subject: Re: [PATCH v5 06/13] lockdep: Implement crossrelease feature
Message-ID: <20170301104548.GE6515@twins.programming.kicks-ass.net>
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On Wed, Mar 01, 2017 at 01:40:33PM +0900, Byungchul Park wrote:

> Right. I decided to force MAX_XHLOCKS_NR to be power of 2 and everything
> became easy. Thank you very much.

Something like:

	BUILD_BUG_ON(MAX_XHLOCKS_NR & (MAX_XHLOCK_NR - 1));

Should enforce I think.