linux-kernel - Re: [PATCH 3/5] mutex debug: add generic blocked

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Message-Id: <1213248327.31518.77.camel@twins>
Date:	Thu, 12 Jun 2008 07:25:27 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Daniel Walker <dwalker@...sta.com>
Cc:	linux-kernel@...r.kernel.org, Ulrich Drepper <drepper@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Arjan van de Ven <arjan@...radead.org>
Subject: Re: [PATCH 3/5] mutex debug: add generic blocked_on usage

On Wed, 2008-06-11 at 13:49 -0700, Daniel Walker wrote:
> plain text document attachment (blocked_on-mutex.patch)

> -#ifdef CONFIG_DEBUG_MUTEXES
> -	/* mutex deadlock detection */
> -	struct mutex_waiter *blocked_on;
> -#endif
> +	/*
> +	 * Deadlock detection and priority inheritance handling,
> +	 * and any other out of line mutex operations
> +	 */
> +	struct lock_waiter_state *blocked_on;

Now you grew task_struct unconditionally, how about

#if defined CONFIG_DEBUG_MUTEX || defined CONFIG_RT_MUTEXES || defined CONFIG_FUTEX

?

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