linux-kernel - Re: spinlock which can morph into a mutex

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Message-ID: <876384uwvm.fsf@basil.nowhere.org>
Date:	Fri, 18 Dec 2009 16:26:05 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Miquel van Smoorenburg <miquels@...tron.nl>
Cc:	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org
Subject: Re: spinlock which can morph into a mutex

Miquel van Smoorenburg <miquels@...tron.nl> writes:
>
> So I probably need a mutex instead of a spinlock, but I want to
> keep minimal overhead for the common case (when no resizing is in
> progress).  I think I need a spinlock that can morph into a mutex ..

The standed mutexes already do that by themselves.

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only.
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