From: compudj <compudj@04897980-b3bd-0310-b5e0-8ef037075253>
Date: Thu, 9 Nov 2006 18:10:46 +0000 (+0000)
Subject: add test
X-Git-Tag: v0.12.20~1240
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=a4cc64517c6641cf5626233e84544c05cd81b37d;p=lttv.git

add test

git-svn-id: http://ltt.polymtl.ca/svn@2249 04897980-b3bd-0310-b5e0-8ef037075253
---

diff --git a/tests/kernel/test-irqloop.c b/tests/kernel/test-irqloop.c
new file mode 100644
index 00000000..38a6680c
--- /dev/null
+++ b/tests/kernel/test-irqloop.c
@@ -0,0 +1,55 @@
+/* test-irqloop
+ *
+ * Test time spent for irq disabling
+ */
+
+
+#include <linux/config.h>
+#include <linux/jiffies.h>
+#include <linux/compiler.h>
+#include <linux/init.h>
+#include <linux/module.h>
+
+#define NR_LOOPS 20000
+
+static int ltt_test_init(void)
+{
+	unsigned int i;
+	cycles_t time1, time2, time;
+	cycles_t max_time = 0, min_time = 18446744073709551615ULL; /* (2^64)-1 */
+	cycles_t tot_time = 0;
+	unsigned long flags;
+	printk(KERN_ALERT "test init\n");
+	
+	time1 = get_cycles();
+	for(i=0; i<NR_LOOPS; i++) {
+		local_irq_save(flags);
+		local_irq_restore(flags);
+	}
+	time2 = get_cycles();
+	time = time2 - time1;
+	tot_time += time;
+
+	printk(KERN_ALERT "test results : time for irq save/restore\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 "test end\n");
+	
+	return -EAGAIN; /* Fail will directly unload the module */
+}
+
+static void ltt_test_exit(void)
+{
+	printk(KERN_ALERT "test exit\n");
+}
+
+module_init(ltt_test_init)
+module_exit(ltt_test_exit)
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Mathieu Desnoyers");
+MODULE_DESCRIPTION("Linux Trace Toolkit Test");
+