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tracing: Save one trace_event->type by using __TRACE_LAST_TYPE

Static defined trace_event->type stops at (__TRACE_LAST_TYPE - 1) and dynamic trace_event->type starts from (__TRACE_LAST_TYPE + 1). To save one trace_event->type index, let's use __TRACE_LAST_TYPE. Link: https://lkml.kernel.org/r/20200703020612.12930-3-richard.weiyang@linux.alibaba.com

Wei Yang committed 6 years ago

Commit 36b8aac1 parent 746cf341 file · +2 −2Browse files

Showing the changes to kernel (1 of 1 file). Show all

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kernel/trace/trace_output.c+2−2
@@ -20,7 +20,7 @@ DECLARE_RWSEM(trace_event_sem); · 19 unmodified lines
20 20
21static struct hlist_head event_hash[EVENT_HASHSIZE] __read_mostly;21static struct hlist_head event_hash[EVENT_HASHSIZE] __read_mostly;
22 22
23static int next_event_type = __TRACE_LAST_TYPE + 1;23static int next_event_type = __TRACE_LAST_TYPE;
24 24
25enum print_line_t trace_print_bputs_msg_only(struct trace_iterator *iter)25enum print_line_t trace_print_bputs_msg_only(struct trace_iterator *iter)
26{26{
@@ -675,7 +675,7 @@ static LIST_HEAD(ftrace_event_list); · 648 unmodified lines
675static int trace_search_list(struct list_head **list)675static int trace_search_list(struct list_head **list)
676{676{
677 struct trace_event *e;677 struct trace_event *e;
678 int next = __TRACE_LAST_TYPE + 1;678 int next = __TRACE_LAST_TYPE;
679 679
680 if (list_empty(&ftrace_event_list)) {680 if (list_empty(&ftrace_event_list)) {
681 *list = &ftrace_event_list;681 *list = &ftrace_event_list;