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-rw-r--r--include/linux/ftrace.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index 0a20445dcbc..740c97dcf9c 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -58,4 +58,12 @@ extern void mcount(void);
# define time_hardirqs_off(a0, a1) do { } while (0)
#endif
+#ifdef CONFIG_PREEMPT_TRACER
+ extern void notrace trace_preempt_on(unsigned long a0, unsigned long a1);
+ extern void notrace trace_preempt_off(unsigned long a0, unsigned long a1);
+#else
+# define trace_preempt_on(a0, a1) do { } while (0)
+# define trace_preempt_off(a0, a1) do { } while (0)
+#endif
+
#endif /* _LINUX_FTRACE_H */