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-rw-r--r--trace/ftrace.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/trace/ftrace.h b/trace/ftrace.h
index cb5e35d217..16c122816d 100644
--- a/trace/ftrace.h
+++ b/trace/ftrace.h
@@ -8,5 +8,6 @@
 extern int trace_marker_fd;
 
 bool ftrace_init(void);
+G_GNUC_PRINTF(1, 2) void ftrace_write(const char *fmt, ...);
 
 #endif /* TRACE_FTRACE_H */