linux-kernel - Re: [3.11-rc1] CONFIG_DEBUG_MUTEXES=y using gcc 3.x makes unbootablekernel.

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Date:	Mon, 9 Sep 2013 22:22:23 +0900
From:	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To:	maarten.lankhorst@...onical.com
Cc:	imirkin@...m.mit.edu, linux-kernel@...r.kernel.org,
	daniel.vetter@...ll.ch, robdclark@...il.com,
	a.p.zijlstra@...llo.nl, mingo@...nel.org
Subject: Re: [3.11-rc1] CONFIG_DEBUG_MUTEXES=y using gcc 3.x makes unbootablekernel.

Maarten Lankhorst wrote:
> Yeah looks ok, did you run the selftests from CONFIG_DEBUG_LOCKING_API_SELFTESTS,
> with/without CONFIG_PROVE_LOCKING and once more with DEBUG_MUTEXES also unset?

Since CONFIG_DEBUG_MUTEXES=n && CONFIG_PROVE_LOCKING=y is impossible, I tested

  CONFIG_DEBUG_MUTEXES=y
  CONFIG_PROVE_LOCKING=y
  CONFIG_DEBUG_LOCKING_API_SELFTESTS=y

  CONFIG_DEBUG_MUTEXES=y
  CONFIG_PROVE_LOCKING=n
  CONFIG_DEBUG_LOCKING_API_SELFTESTS=y

  CONFIG_DEBUG_MUTEXES=n
  CONFIG_PROVE_LOCKING=n
  CONFIG_DEBUG_LOCKING_API_SELFTESTS=y

  CONFIG_DEBUG_MUTEXES=y
  CONFIG_PROVE_LOCKING=y
  CONFIG_DEBUG_LOCKING_API_SELFTESTS=n

  CONFIG_DEBUG_MUTEXES=y
  CONFIG_PROVE_LOCKING=n
  CONFIG_DEBUG_LOCKING_API_SELFTESTS=n

  CONFIG_DEBUG_MUTEXES=n
  CONFIG_PROVE_LOCKING=n
  CONFIG_DEBUG_LOCKING_API_SELFTESTS=n

and all works OK.
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