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Date: Thu, 10 Jan 2002 10:57:07 +0000
From: Arjan van de Ven <arjanv@redhat.com>
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To: Rainer Keller <Keller@hlrs.de>, linux-kernel@vger.kernel.org
Subject: Re: Small optimizations for UP (sched and prefetch)
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> +
> +#ifndef CONFIG_SMP
> +#define spin_lock_prefetch(x)
> +#else
> +#define spin_lock_prefetch(x) prefetchw(x)
> +#endif
> 

please make it
+#define spin_lock_prefetch(x) do {} while (0)

instead of an empty define...
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