I don't remember whether this has been discussed earlier, won't
it make sense to use the fault variant of lfetch for prefetch()
and prefetchw()? After all, the caller has high confidence that
the cache line will be used in the future.
Signed-off-by: Ken Chen <[EMAIL PROTECTED]>
--- linux-2.6.12/include/asm-ia64/processor.h.orig 2005-07-28
14:46:26.629519713 -0700
+++ linux-2.6.12/include/asm-ia64/processor.h 2005-07-28 14:48:17.037721485
-0700
@@ -682,13 +682,13 @@ ia64_imva (void *addr)
static inline void
prefetch (const void *x)
{
- ia64_lfetch(ia64_lfhint_none, x);
+ ia64_lfetch_fault(ia64_lfhint_none, x);
}
static inline void
prefetchw (const void *x)
{
- ia64_lfetch_excl(ia64_lfhint_none, x);
+ ia64_lfetch_fault_excl(ia64_lfhint_none, x);
}
#define spin_lock_prefetch(x) prefetchw(x)
-
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