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Date: Wed, 22 Sep 2004 13:26:53 +0200
From: Andi Kleen <ak@suse.de>
Subject: Re: sem_is_locked()
Message-ID: <20040922112652.GA27432@wotan.suse.de>
References: <20040922111139.GQ9106@holomorphy.com>
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To: William Lee Irwin III <wli@holomorphy.com>
Cc: linux-arch@vger.kernel.org
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On Wed, Sep 22, 2004 at 04:11:39AM -0700, William Lee Irwin III wrote:
> hch and some others (e.g. moi) trying to do vfs sweeps would very much
> like to have a sem_is_locked() to assist them; by any chance could arch
> maintainers help out with implementing this for various arches?

On x86-64/i386 and probably most other architectures it is just 
atomic_read(&sem->count) <= 0 

-Andi