[Patch v2 2/4] tracing: save one trace_event->type by using __TRACE_LAST_TYPE

[Wei Yang]

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.

Signed-off-by: Wei Yang <richard.weiy...@linux.alibaba.com>
---
 kernel/trace/trace_output.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c
index a35232d61601..4d1893564912 100644
--- a/kernel/trace/trace_output.c
+++ b/kernel/trace/trace_output.c
@@ -20,7 +20,7 @@ DECLARE_RWSEM(trace_event_sem);
 
 static struct hlist_head event_hash[EVENT_HASHSIZE] __read_mostly;
 
-static int next_event_type = __TRACE_LAST_TYPE + 1;
+static int next_event_type = __TRACE_LAST_TYPE;
 
 enum print_line_t trace_print_bputs_msg_only(struct trace_iterator *iter)
 {
@@ -675,7 +675,7 @@ static LIST_HEAD(ftrace_event_list);
 static int trace_search_list(struct list_head **list)
 {
        struct trace_event *e;
-       int next = __TRACE_LAST_TYPE + 1;
+       int next = __TRACE_LAST_TYPE;
 
        if (list_empty(&ftrace_event_list)) {
                *list = &ftrace_event_list;
-- 
2.20.1 (Apple Git-117)