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-rw-r--r--include/linux/ftrace.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index 498769425eb..1c9cdca0258 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -223,6 +223,9 @@ extern int ftrace_make_nop(struct module *mod,
*/
extern int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr);
+#ifdef CONFIG_TRACE_BPRINTK
+extern int trace_vbprintk(unsigned long ip, const char *fmt, va_list args);
+#endif
/* May be defined in arch */
extern int ftrace_arch_read_dyn_info(char *buf, int size);