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-rw-r--r--tools/perf/util/trace-event-parse.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index e0a4f652f289..a4088ced1e64 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -1423,6 +1423,11 @@ static long long arg_num_eval(struct print_arg *arg)
die("unknown op '%s'", arg->op.op);
}
break;
+ case '+':
+ left = arg_num_eval(arg->op.left);
+ right = arg_num_eval(arg->op.right);
+ val = left + right;
+ break;
default:
die("unknown op '%s'", arg->op.op);
}
@@ -1483,6 +1488,13 @@ process_fields(struct event *event, struct print_flag_sym **list, char **tok)
free_token(token);
type = process_arg(event, arg, &token);
+
+ if (type == EVENT_OP)
+ type = process_op(event, arg, &token);
+
+ if (type == EVENT_ERROR)
+ goto out_free;
+
if (test_type_token(type, token, EVENT_DELIM, ","))
goto out_free;