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-rw-r--r--tools/lib/traceevent/event-parse.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/lib/traceevent/event-parse.h b/tools/lib/traceevent/event-parse.h
index 7503edf5ac6a..9ab6367f2fe9 100644
--- a/tools/lib/traceevent/event-parse.h
+++ b/tools/lib/traceevent/event-parse.h
@@ -533,7 +533,7 @@ int pevent_register_comm(struct pevent *pevent, const char *comm, int pid);
void pevent_register_trace_clock(struct pevent *pevent, char *trace_clock);
int pevent_register_function(struct pevent *pevent, char *name,
unsigned long long addr, char *mod);
-int pevent_register_print_string(struct pevent *pevent, char *fmt,
+int pevent_register_print_string(struct pevent *pevent, const char *fmt,
unsigned long long addr);
int pevent_pid_is_registered(struct pevent *pevent, int pid);