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authorWei Yang <richard.weiyang@linux.alibaba.com>2020-07-03 10:06:10 +0800
committerSteven Rostedt (VMware) <rostedt@goodmis.org>2020-07-09 18:14:58 -0400
commit36b8aacf2a483ba40fbe91c830d314e0bc133044 (patch)
tree9b706a5392a724d69fb855ba7d9dcedf3f45ab72 /kernel/trace/trace_output.c
parent746cf3459f118592a72ef42e7551777ff17b1684 (diff)
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 Signed-off-by: Wei Yang <richard.weiyang@linux.alibaba.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_output.c')
-rw-r--r--kernel/trace/trace_output.c4
1 files 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;