Messages in this thread | | | Subject | Re: [patch 4/21] fix ARCH_HAS_PREFETCH | From | Alan Cox <> | Date | 15 Aug 2002 02:23:54 +0100 |
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On Wed, 2002-08-14 at 21:58, H. Peter Anvin wrote: > > Since some processors now have "busy wait delay" instructions, this > would also make it possible to do:
Nobody should be using an empty busy loop. If its a short timed busy loop then they should be using udelay, if its a long one schedule_timeout()
If its polling hardware then it isnt an empty loop
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