linux-kernel - Re: [PATCH v4 1/2] locking/rwsem: Add DEBUG_RWSEMS to look for lock/unlock mismatches

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Date:   Wed, 28 Mar 2018 18:32:24 -0700
From:   Davidlohr Bueso <dave@...olabs.net>
To:     Waiman Long <longman@...hat.com>
Cc:     Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 1/2] locking/rwsem: Add DEBUG_RWSEMS to look for
 lock/unlock mismatches

On Wed, 28 Mar 2018, Waiman Long wrote:

>+config DEBUG_RWSEMS
>+	bool "RW Semaphore debugging: basic checks"
>+	depends on DEBUG_KERNEL && RWSEM_SPIN_ON_OWNER

Why depend on RWSEM_SPIN_ON_OWNER? Doesn't everyone benefit from this?
For example, DEBUG_MUTEXES does not need it.

Thanks,
Davidlohr