1 files changed, 48 insertions, 0 deletions

diff --git a/arch/x86/oprofile/init.c b/arch/x86/oprofile/init.c
new file mode 100644
index 000000000000..5341d481d92f
--- /dev/null
+++ b/arch/x86/oprofile/init.c
@@ -0,0 +1,48 @@
+/**
+ * @file init.c
+ *
+ * @remark Copyright 2002 OProfile authors
+ * @remark Read the file COPYING
+ *
+ * @author John Levon <levon@movementarian.org>
+ */
+
+#include <linux/oprofile.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+ 
+/* We support CPUs that have performance counters like the Pentium Pro
+ * with the NMI mode driver.
+ */
+ 
+extern int op_nmi_init(struct oprofile_operations * ops);
+extern int op_nmi_timer_init(struct oprofile_operations * ops);
+extern void op_nmi_exit(void);
+extern void x86_backtrace(struct pt_regs * const regs, unsigned int depth);
+
+
+int __init oprofile_arch_init(struct oprofile_operations * ops)
+{
+        int ret;
+
+        ret = -ENODEV;
+
+#ifdef CONFIG_X86_LOCAL_APIC
+        ret = op_nmi_init(ops);
+#endif
+#ifdef CONFIG_X86_IO_APIC
+        if (ret < 0)
+                ret = op_nmi_timer_init(ops);
+#endif
+        ops->backtrace = x86_backtrace;
+
+        return ret;
+}
+
+
+void oprofile_arch_exit(void)
+{
+#ifdef CONFIG_X86_LOCAL_APIC
+        op_nmi_exit();
+#endif
+}