Messages in this thread | | | Subject | Re: [patch 4/21] fix ARCH_HAS_PREFETCH | From | Alan Cox <> | Date | 11 Aug 2002 20:49:56 +0100 |
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On Sun, 2002-08-11 at 08:38, Andrew Morton wrote: > This information loss is unfortunate. Examples: > > for (i = 0; i < N; i++) > prefetch(foo[i]); > > Problem is, if `prefetch' is a no-op, the compiler will still > generate an empty busy-wait loop. Which it must do.
Why - nothing there is volatile
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