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-rw-r--r--tools/perf/util/trace-event-parse.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index fde1a434d630..2d424ff50ec2 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -2106,6 +2106,12 @@ static unsigned long long eval_num_arg(void *data, int size,
die("unknown op '%s'", arg->op.op);
val = left == right;
break;
+ case '-':
+ val = left - right;
+ break;
+ case '+':
+ val = left + right;
+ break;
default:
die("unknown op '%s'", arg->op.op);
}
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