From b07c7808ce8fe0410064a220f6f6eabed2229bd1 Mon Sep 17 00:00:00 2001
From: Samy Al Bahra <sbahra@appnexus.com>
Date: Mon, 1 Oct 2012 17:59:10 -0400
Subject: [PATCH] regressions/ck_ring: Add strict fence around barrier and
 cache align ring.

---
 regressions/ck_ring/validate/ck_ring_spmc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/regressions/ck_ring/validate/ck_ring_spmc.c b/regressions/ck_ring/validate/ck_ring_spmc.c
index 22b5fdc..39c062a 100644
--- a/regressions/ck_ring/validate/ck_ring_spmc.c
+++ b/regressions/ck_ring/validate/ck_ring_spmc.c
@@ -54,7 +54,7 @@ struct entry {
 
 static int nthr;
 static ck_ring_t *ring;
-static ck_ring_t ring_spmc;
+static ck_ring_t ring_spmc CK_CC_CACHELINE;
 static struct affinity a;
 static int size;
 static volatile int barrier;
@@ -74,6 +74,7 @@ test_spmc(void *c)
         }
 
 	tid = ck_pr_faa_int(&eb, 1);
+	ck_pr_fence_memory();
 	while (ck_pr_load_int(&eb) != nthr - 1);
 
 	for (i = 0; i < ITERATIONS; i++) {