From 979e6e46d0e4313c3152c2735196423281a09c50 Mon Sep 17 00:00:00 2001
From: compudj <compudj@04897980-b3bd-0310-b5e0-8ef037075253>
Date: Thu, 8 May 2008 01:20:06 +0000
Subject: [PATCH] update

git-svn-id: http://ltt.polymtl.ca/svn@2897 04897980-b3bd-0310-b5e0-8ef037075253
---
 tests/kernel/test-cmpxchg-nolock2.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/tests/kernel/test-cmpxchg-nolock2.c b/tests/kernel/test-cmpxchg-nolock2.c
index 52d1af85..fcae83e4 100644
--- a/tests/kernel/test-cmpxchg-nolock2.c
+++ b/tests/kernel/test-cmpxchg-nolock2.c
@@ -16,6 +16,33 @@
 
 int test_val;
 
+static void do_testbaseline(void)
+{
+	int ret;
+	long flags;
+	unsigned int i;
+	cycles_t time1, time2, time;
+	long rem;
+
+	local_irq_save(flags);
+	preempt_disable();
+	time1 = get_cycles();
+	for (i = 0; i < NR_LOOPS; i++) {
+		asm volatile ("");
+	}
+	time2 = get_cycles();
+	local_irq_restore(flags);
+	preempt_enable();
+	time = time2 - time1;
+
+	printk(KERN_ALERT "test results: time for baseline\n");
+	printk(KERN_ALERT "number of loops: %d\n", NR_LOOPS);
+	printk(KERN_ALERT "total time: %llu\n", time);
+	time = div_long_long_rem(time, NR_LOOPS, &rem);
+	printk(KERN_ALERT "-> baseline takes %llu cycles\n", time);
+	printk(KERN_ALERT "test end\n");
+}
+
 static void do_test_sync_cmpxchg(void)
 {
 	int ret;
@@ -165,6 +192,7 @@ static int ltt_test_init(void)
 {
 	printk(KERN_ALERT "test init\n");
 	
+	do_testbaseline();
 	do_test_sync_cmpxchg();
 	do_test_cmpxchg();
 	do_test_enable_int();
-- 
2.34.1