From: compudj <compudj@04897980-b3bd-0310-b5e0-8ef037075253>
Date: Mon, 19 Mar 2007 03:55:36 +0000 (+0000)
Subject: add teest tsc sync
X-Git-Tag: v0.12.20~1053
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=31d375f53965ffd00fb78cf7217c35ea56405445;p=lttv.git

add teest tsc sync

git-svn-id: http://ltt.polymtl.ca/svn@2436 04897980-b3bd-0310-b5e0-8ef037075253
---

diff --git a/tests/kernel/Makefile b/tests/kernel/Makefile
index 13af7220..541f917a 100644
--- a/tests/kernel/Makefile
+++ b/tests/kernel/Makefile
@@ -1,22 +1,25 @@
 ifneq ($(KERNELRELEASE),)
 ifneq ($(CONFIG_LTT),)
-	obj-m += ltt-facility-loader-tests.o
-#	obj-m += test-time-probe.o 
-	obj-m += test-time-probe2.o 
-	obj-m += test-compact.o 
+	#obj-m += ltt-facility-loader-tests.o
+#	#obj-m += test-time-probe.o 
+	#obj-m += test-time-probe2.o 
+	#obj-m += test-compact.o 
 #	obj-m += ltt-facility-loader-compact.o
 #	obj-m += test-instrument-size-small.o
 #	obj-m += test-instrument-size-med.o
 #	obj-m += test-instrument-size-big.o
 #	obj-m += test-printk-effect.o
 endif
-	obj-m += test-debugfs.o
+	obj-m += test-async-tsc.o
+	obj-m += test-tsc-sync.o
+	obj-m += test-hpet.o
+	#obj-m += test-debugfs.o
 #	obj-m += test-mod.o
 #	obj-m += atomic-pIII-cmx.o
-	obj-m += test-hotplug.o
-	obj-m += rdtsc-smp.o
-	obj-m += test-local.o
-	obj-m += test-ser.o
+	#obj-m += test-hotplug.o
+	#obj-m += rdtsc-smp.o
+	#obj-m += test-local.o
+	#obj-m += test-ser.o
 #	obj-m += test-cmpxchg.o
 #	obj-m += test-cmpxchg-nolock.o
 #	obj-m += test-spinlock.o
@@ -28,8 +31,8 @@ endif
 	#obj-m += test-kprobes.o
 	#obj-m += test-printk.o
 	#obj-m += test-debugfs.o
-	obj-m += test-mark.o
-	obj-m += test-markxmc.o
+	#obj-m += test-mark.o
+	#obj-m += test-markxmc.o
 #	obj-m += probe.o
 #	obj-m += test-irqloop.o
 	#obj-m += marker-loader.o
diff --git a/tests/kernel/test-tsc-sync.c b/tests/kernel/test-tsc-sync.c
new file mode 100644
index 00000000..5ca7e57e
--- /dev/null
+++ b/tests/kernel/test-tsc-sync.c
@@ -0,0 +1,61 @@
+/* test-tsc-sync.c
+ *
+ * Test TSC sync
+ */
+
+
+#include <linux/module.h>
+#include <linux/timer.h>
+#include <asm/timex.h>
+#include <linux/jiffies.h>
+
+static DEFINE_PER_CPU(cycles_t, count) = 0;
+
+static struct timer_list test_timer;
+
+/* IPI called on each CPU. */
+static void test_each(void *info)
+{
+	__get_cpu_var(count) = get_cycles();
+}
+
+static void do_test_timer(unsigned long data)
+{
+	int cpu;
+
+	/* Increment the counters */
+	on_each_cpu(test_each, NULL, 0, 1);
+	/* Read all the counters */
+	printk("Counters read from CPU %d\n", smp_processor_id());
+	for_each_online_cpu(cpu) {
+		printk("Read : CPU %d, count %llu\n", cpu,
+			per_cpu(count, cpu));
+	}
+	del_timer(&test_timer);
+	test_timer.expires = jiffies + 1000;
+	add_timer(&test_timer);
+}
+
+static int __init test_init(void)
+{
+	/* initialize the timer that will increment the counter */
+	init_timer(&test_timer);
+	test_timer.function = do_test_timer;
+	test_timer.expires = jiffies + 1;
+	add_timer(&test_timer);
+
+	return 0;
+}
+
+static void __exit test_exit(void)
+{
+	del_timer_sync(&test_timer);
+}
+
+module_init(test_init);
+module_exit(test_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Mathieu Desnoyers");
+MODULE_DESCRIPTION("sync tsc test");
+