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-rw-r--r--kernel/trace/trace_output.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c
index b7380eee9fa1..b6e99af79214 100644
--- a/kernel/trace/trace_output.c
+++ b/kernel/trace/trace_output.c
@@ -435,6 +435,17 @@ int register_ftrace_event(struct trace_event *event)
435 if (ftrace_find_event(event->type)) 435 if (ftrace_find_event(event->type))
436 goto out; 436 goto out;
437 437
438 if (event->trace == NULL)
439 event->trace = trace_nop_print;
440 if (event->latency_trace == NULL)
441 event->latency_trace = trace_nop_print;
442 if (event->raw == NULL)
443 event->raw = trace_nop_print;
444 if (event->hex == NULL)
445 event->hex = trace_nop_print;
446 if (event->binary == NULL)
447 event->binary = trace_nop_print;
448
438 key = event->type & (EVENT_HASHSIZE - 1); 449 key = event->type & (EVENT_HASHSIZE - 1);
439 450
440 hlist_add_head_rcu(&event->node, &event_hash[key]); 451 hlist_add_head_rcu(&event->node, &event_hash[key]);
@@ -874,8 +885,6 @@ static struct trace_event trace_print_event = {
874 .trace = trace_print_print, 885 .trace = trace_print_print,
875 .latency_trace = trace_print_print, 886 .latency_trace = trace_print_print,
876 .raw = trace_print_raw, 887 .raw = trace_print_raw,
877 .hex = trace_nop_print,
878 .binary = trace_nop_print,
879}; 888};
880 889
881static struct trace_event *events[] __initdata = { 890static struct trace_event *events[] __initdata = {