From: Andi Kleen <andi@firstfloor.org>
To: Miquel van Smoorenburg <miquels@cistron.nl>
Cc: Ingo Molnar <mingo@elte.hu>, linux-kernel@vger.kernel.org
Subject: Re: spinlock which can morph into a mutex
Date: Fri, 18 Dec 2009 16:26:05 +0100 [thread overview]
Message-ID: <876384uwvm.fsf@basil.nowhere.org> (raw)
In-Reply-To: <20091218143032.GA16595@xs4all.net> (Miquel van Smoorenburg's message of "Fri, 18 Dec 2009 15:30:35 +0100")
Miquel van Smoorenburg <miquels@cistron.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@linux.intel.com -- Speaking for myself only.
next prev parent reply other threads:[~2009-12-18 15:26 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-18 14:30 spinlock which can morph into a mutex Miquel van Smoorenburg
2009-12-18 15:26 ` Andi Kleen [this message]
2009-12-18 15:43 ` Peter Zijlstra
2009-12-18 17:14 ` Thomas Gleixner
2009-12-18 18:19 ` Miquel van Smoorenburg
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