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From: Andi Kleen <ak@linux.intel.com>
To: Daniel Walker <dwalker@mvista.com>
Cc: linux-acpi@vger.kernel.org, Ingo Molnar <mingo@elte.hu>,
	Peter Zijlstra <peterz@infradead.org>,
	Len Brown <len.brown@intel.com>,
	Robert Moore <robert.moore@intel.com>
Subject: Re: [PATCH 2/4] acpi: add real mutex function calls
Date: Sat, 16 Aug 2008 00:16:15 +0200	[thread overview]
Message-ID: <48A6002F.6070706@linux.intel.com> (raw)
In-Reply-To: <1218831242-27618-3-git-send-email-dwalker@mvista.com>

Daniel Walker wrote:
> Instead of re-using semaphores for the mutex operation, I've
> added usage of the kernel mutex for the acpi os mutex
> implementation.

This still implies that we'll get lockdep warnings if the AML
does something dodgy with mutexes, right?

I don't like that. We cannot generally fix the AML, the only
way would be to time out on a deadlock and let it handle that.
Also it's not that we don't get enough ACPI reports already.

Is there a way to just turn lockdep always off for these mutexes?

-Andi

  parent reply	other threads:[~2008-08-15 22:16 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-08-15 20:14 [PATCH 0/4] acpi semaphore removal v3 Daniel Walker
2008-08-15 20:14 ` [PATCH 1/4] add mutex_lock_timeout() Daniel Walker
2008-08-15 20:14   ` [PATCH 2/4] acpi: add real mutex function calls Daniel Walker
2008-08-15 20:14     ` [PATCH 3/4] acpi: add lockdep magic Daniel Walker
2008-08-15 20:14       ` [PATCH 4/4] acpi: semaphore removal Daniel Walker
2008-08-15 22:17         ` Andi Kleen
2008-08-16  0:18           ` Daniel Walker
2008-08-16  2:06             ` Andi Kleen
2008-08-16  4:15               ` Daniel Walker
2008-08-15 22:16     ` Andi Kleen [this message]
2008-08-15 23:10       ` [PATCH 2/4] acpi: add real mutex function calls Daniel Walker
2008-08-16  2:16         ` Andi Kleen
2008-08-16  4:11           ` Daniel Walker
  -- strict thread matches above, loose matches on Subject: below --
2008-08-26 18:59 [PATCH 1/4] mutex: add mutex_lock_timeout() Daniel Walker
2008-08-26 18:59 ` [PATCH 2/4] acpi: add real mutex function calls Daniel Walker

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