[for-next][PATCH 04/29] tracing: Add comment to predicate_parse() about "&&" or "||"

[Steven Rostedt]

From: "Steven Rostedt (VMware)" <rostedt@xxxxxxxxxxx>

As the predicat_parse() code is rather complex, commenting subtleties is
important. The switch case statement should be commented to describe that it
is only looking for two '&' or '|' together, which is why the fall through
to an error is after the check.

Signed-off-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx>
---
 kernel/trace/trace_events_filter.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
index eb694756c4bb..f052ecb085e9 100644
--- a/kernel/trace/trace_events_filter.c
+++ b/kernel/trace/trace_events_filter.c
@@ -491,6 +491,7 @@ predicate_parse(const char *str, int nr_parens, int nr_preds,
 				break;
 			case '&':
 			case '|':
+				/* accepting only "&&" or "||" */
 				if (next[1] == next[0]) {
 					ptr++;
 					break;
-- 
2.20.1