From 79c83bd15af3b06079a9205db9c64c92ca1bd868 Mon Sep 17 00:00:00 2001
From: Jack Steiner <steiner@sgi.com>
Date: Tue, 24 Jan 2006 16:32:11 -0600
Subject: [PATCH] [IA64] Scaling fix for simultaneous unaligned accesses
Eliminate a hot shared cacheline that occurs if multiple cpus are
taking unaligned exceptions.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
---
arch/ia64/kernel/unaligned.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/ia64/kernel/unaligned.c b/arch/ia64/kernel/unaligned.c
index 43b45b65ee5a..f9e0ae936d1a 100644
--- a/arch/ia64/kernel/unaligned.c
+++ b/arch/ia64/kernel/unaligned.c
@@ -1283,8 +1283,9 @@ within_logging_rate_limit (void)
if (jiffies - last_time > 5*HZ)
count = 0;
- if (++count < 5) {
+ if (count < 5) {
last_time = jiffies;
+ count++;
return 1;
}
return 0;
--
2.34.1