From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001
From: André Fabian Silva Delgado <emulatorman@parabola.nu>
Date: Wed, 5 Aug 2015 17:04:01 -0300
Subject: Initial import

---
 arch/x86/oprofile/init.c | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 arch/x86/oprofile/init.c

(limited to 'arch/x86/oprofile/init.c')

diff --git a/arch/x86/oprofile/init.c b/arch/x86/oprofile/init.c
new file mode 100644
index 000000000..9e138d00a
--- /dev/null
+++ b/arch/x86/oprofile/init.c
@@ -0,0 +1,38 @@
+/**
+ * @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.
+ */
+
+#ifdef CONFIG_X86_LOCAL_APIC
+extern int op_nmi_init(struct oprofile_operations *ops);
+extern void op_nmi_exit(void);
+#else
+static int op_nmi_init(struct oprofile_operations *ops) { return -ENODEV; }
+static void op_nmi_exit(void) { }
+#endif
+
+extern void x86_backtrace(struct pt_regs * const regs, unsigned int depth);
+
+int __init oprofile_arch_init(struct oprofile_operations *ops)
+{
+	ops->backtrace = x86_backtrace;
+	return op_nmi_init(ops);
+}
+
+void oprofile_arch_exit(void)
+{
+	op_nmi_exit();
+}
-- 
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