Date: Thu, 07 Dec 2006 14:11:40 -0800 (PST)
Message-Id: <20061207.141140.39644636.davem@davemloft.net>
To: dhowells@redhat.com
Cc: James.Bottomley@SteelEye.com, akpm@osdl.org, torvalds@osdl.org,
       davem@davemloft.com, wli@holomorphy.com, matthew@wil.cx,
       linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org
Subject: Re: [PATCH 3/3] WorkStruct: Use direct assignment rather than
 cmpxchg() 
From: David Miller <davem@davemloft.net>
In-Reply-To: <10660.1165526163@redhat.com>
References: <20061207153143.28408.7274.stgit@warthog.cambridge.redhat.com>
	<639.1165521999@redhat.com>
	<10660.1165526163@redhat.com>
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From: David Howells <dhowells@redhat.com>
Date: Thu, 07 Dec 2006 21:16:03 +0000

> I don't know that sparc32 can do conditional instructions for
> example.  If we force this assumption it becomes a potential
> limitation on the archs we can support.  OTOH, it may be that every
> arch that supports SMP and has to emulate bitops with spinlocks also
> supports conditional stores; but I don't know that.

Sparc32 has normal branches but no conditional instruction execution.
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