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-rw-r--r--include/asm-x86/ftrace.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/asm-x86/ftrace.h b/include/asm-x86/ftrace.h
index be0e004ad148..1bb6f9bbe1ab 100644
--- a/include/asm-x86/ftrace.h
+++ b/include/asm-x86/ftrace.h
@@ -7,6 +7,16 @@
#ifndef __ASSEMBLY__
extern void mcount(void);
+
+static inline unsigned long ftrace_call_adjust(unsigned long addr)
+{
+ /*
+ * call mcount is "e8 <4 byte offset>"
+ * The addr points to the 4 byte offset and the caller of this
+ * function wants the pointer to e8. Simply subtract one.
+ */
+ return addr - 1;
+}
#endif
#endif /* CONFIG_FTRACE */
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