From 0455c435af501889de51c79a223883b3c2003b20 Mon Sep 17 00:00:00 2001
From: jaszha03 <jason.zhang2@arm.com>
Date: Wed, 12 Jun 2019 16:01:19 -0500
Subject: vppinfra: conformed spinlocks to use CLIB_PAUSE

Modified test-and-set spin locks to call CLIB_PAUSE () when spinning
for code consistency. Decreases the memory bandwidth consumed.

Type: fix

Change-Id: I1cca4f87f44f23f257c7a35466cd2e7767072f51
Signed-off-by: Jason Zhang <jason.zhang2@arm.com>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
Reviewed-by: Lijian Zhang <Lijian.Zhang@arm.com>
---
 src/vnet/classify/vnet_classify.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'src/vnet/classify/vnet_classify.c')

diff --git a/src/vnet/classify/vnet_classify.c b/src/vnet/classify/vnet_classify.c
index 90086f0e62f..64549a6e0d5 100755
--- a/src/vnet/classify/vnet_classify.c
+++ b/src/vnet/classify/vnet_classify.c
@@ -18,6 +18,7 @@
 #include <vnet/api_errno.h>	/* for API error numbers */
 #include <vnet/l2/l2_classify.h>	/* for L2_INPUT_CLASSIFY_NEXT_xxx */
 #include <vnet/fib/fib_table.h>
+#include <vppinfra/lock.h>
 
 vnet_classify_main_t vnet_classify_main;
 
@@ -447,7 +448,7 @@ vnet_classify_add_del (vnet_classify_table_t * t,
   hash >>= t->log2_nbuckets;
 
   while (clib_atomic_test_and_set (t->writer_lock))
-    ;
+    CLIB_PAUSE ();
 
   /* First elt in the bucket? */
   if (b->offset == 0)
-- 
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