diff options
| author | Wei Yang <richard.weiyang@linux.alibaba.com> | 2020-07-03 04:06:09 +0200 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2020-07-10 00:00:47 +0200 |
| commit | 746cf3459f118592a72ef42e7551777ff17b1684 (patch) | |
| tree | 727cd7429ea337d8692063cea0f1b2dca7f8212a /kernel/trace/trace_output.c | |
| parent | ring-buffer: Do not trigger a WARN if clock going backwards is detected (diff) | |
| download | linux-746cf3459f118592a72ef42e7551777ff17b1684.tar.xz linux-746cf3459f118592a72ef42e7551777ff17b1684.zip | |
tracing: Simplify defining of the next event id
The value to be used and compared in trace_search_list() is "last + 1".
Let's just define next to be "last + 1" instead of doing the addition
each time.
Link: https://lkml.kernel.org/r/20200703020612.12930-2-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.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c index 73976de7f8cc..a35232d61601 100644 --- a/kernel/trace/trace_output.c +++ b/kernel/trace/trace_output.c @@ -675,11 +675,11 @@ static LIST_HEAD(ftrace_event_list); static int trace_search_list(struct list_head **list) { struct trace_event *e; - int last = __TRACE_LAST_TYPE; + int next = __TRACE_LAST_TYPE + 1; if (list_empty(&ftrace_event_list)) { *list = &ftrace_event_list; - return last + 1; + return next; } /* @@ -687,17 +687,17 @@ static int trace_search_list(struct list_head **list) * lets see if somebody freed one. */ list_for_each_entry(e, &ftrace_event_list, list) { - if (e->type != last + 1) + if (e->type != next) break; - last++; + next++; } /* Did we used up all 65 thousand events??? */ - if ((last + 1) > TRACE_EVENT_TYPE_MAX) + if (next > TRACE_EVENT_TYPE_MAX) return 0; *list = &e->list; - return last + 1; + return next; } void trace_event_read_lock(void) |