From: Cliff Wickman <cpw@xxxxxxx>
Clear caches between numademo runs - ia64 style.
Use the fc instruction to clear cache.
Assuming 128-byte cache lines.
Look right?
Signed-off-by: Cliff Wickman <cpw@xxxxxxx>
---
clearcache.c | 7 +++++++
1 file changed, 7 insertions(+)
Index: numactl-dev/clearcache.c
===================================================================
--- numactl-dev.orig/clearcache.c
+++ numactl-dev/clearcache.c
@@ -63,6 +63,13 @@ void clearcache(unsigned char *mem, unsi
cl = ((cl >> 8) & 0xff) * 8;
for (i = 0; i < size; i += cl)
asm("clflush %0" :: "m" (mem[i]));
+#elif defined(__ia64__)
+ unsigned long cl, endcl;
+ // flush 128-byte cache lines
+ cl = ((unsigned long)mem >> 7) << 7;
+ endcl = ((unsigned long)(mem + (size-1)) >> 7) << 7;
+ for (; cl <= endcl; cl += 128)
+ asm ("fc %0" :: "r"(cl) : "memory" );
#else
#warning "Consider adding a clearcache implementation for your architecture"
fallback_clearcache();
--
To unsubscribe from this list: send the line "unsubscribe linux-numa" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
