1 files changed, 46 insertions, 0 deletions
diff --git a/drivers/oprofile/timer_int.c b/drivers/oprofile/timer_int.c
new file mode 100644
index 00000000000..710a45f0d73
--- /dev/null
+++ b/drivers/oprofile/timer_int.c
@@ -0,0 +1,46 @@
+/**
+ * @file timer_int.c
+ *
+ * @remark Copyright 2002 OProfile authors
+ * @remark Read the file COPYING
+ *
+ * @author John Levon <levon@movementarian.org>
+ */
+
+#include <linux/kernel.h>
+#include <linux/notifier.h>
+#include <linux/smp.h>
+#include <linux/oprofile.h>
+#include <linux/profile.h>
+#include <linux/init.h>
+#include <asm/ptrace.h>
+
+#include "oprof.h"
+
+static int timer_notify(struct pt_regs *regs)
+{
+ 	oprofile_add_sample(regs, 0);
+	return 0;
+}
+
+static int timer_start(void)
+{
+	return register_timer_hook(timer_notify);
+}
+
+
+static void timer_stop(void)
+{
+	unregister_timer_hook(timer_notify);
+}
+
+
+void __init oprofile_timer_init(struct oprofile_operations * ops)
+{
+	ops->create_files = NULL;
+	ops->setup = NULL;
+	ops->shutdown = NULL;
+	ops->start = timer_start;
+	ops->stop = timer_stop;
+	ops->cpu_type = "timer";
+}