X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=tests%2Fkernel%2Ftest-cmpxchg.c;h=58264a934999e0803df4a2379b4c398b03f6e139;hb=c9a9c80f3f62d7f187f02c3eafe8bb92aa2cf949;hp=a81663319c6f3af32749fd126254ab8d146383bb;hpb=02e6c12634c5e4e473c5df88ba537502d046b882;p=lttv.git

diff --git a/tests/kernel/test-cmpxchg.c b/tests/kernel/test-cmpxchg.c
index a8166331..58264a93 100644
--- a/tests/kernel/test-cmpxchg.c
+++ b/tests/kernel/test-cmpxchg.c
@@ -4,24 +4,27 @@
  */
 
 
+#include <linux/jiffies.h>
+#include <linux/compiler.h>
 #include <linux/init.h>
 #include <linux/module.h>
-#include <linux/ltt-core.h>
-#include <asm/system.h>
 
-#define NR_LOOPS 2000
+#define NR_LOOPS 20000
 
-static volatile int test_val = 100;
+volatile int test_val = 100;
 
-static void do_test(void)
+
+static inline void do_test(void)
 {
-	int val;
+	int val, ret;
 
 	val = test_val;
 	
-	ret = cmpxchg(&test_val, val, 101);
+	ret = cmpxchg(&test_val, val, val+1);
 }
 
+//void (*fct)(void) = do_test;
+
 static int ltt_test_init(void)
 {
 	unsigned int i;
@@ -32,22 +35,25 @@ static int ltt_test_init(void)
 	printk(KERN_ALERT "test init\n");
 	
 	local_irq_save(flags);
+	time1 = get_cycles();
 	for(i=0; i<NR_LOOPS; i++) {
-		time1 = get_cycles();
+		//for(int j=0; j<10; j++) {
 		do_test();
-		time2 = get_cycles();
-		time = time2 - time1;
-		max_time = max(max_time, time);
-		min_time = min(min_time, time);
-		tot_time += time;
+		//}
+		//max_time = max(max_time, time);
+		//min_time = min(min_time, time);
+		//printk("val : %d\n", test_val);
 	}
+	time2 = get_cycles();
 	local_irq_restore(flags);
+	time = time2 - time1;
+	tot_time += time;
 
-	printk(KERN_ALERT "test results : time per probe\n");
+	printk(KERN_ALERT "test results : time for cmpxchg\n");
 	printk(KERN_ALERT "number of loops : %d\n", NR_LOOPS);
 	printk(KERN_ALERT "total time : %llu\n", tot_time);
-	printk(KERN_ALERT "min : %llu\n", min_time);
-	printk(KERN_ALERT "max : %llu\n", max_time);
+	//printk(KERN_ALERT "min : %llu\n", min_time);
+	//printk(KERN_ALERT "max : %llu\n", max_time);
 
 	printk(KERN_ALERT "test end\n");