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-rw-r--r--tools/lib/traceevent/event-parse.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
index 865dea55454b..190cc886ab91 100644
--- a/tools/lib/traceevent/event-parse.c
+++ b/tools/lib/traceevent/event-parse.c
@@ -2398,6 +2398,12 @@ static int arg_num_eval(struct print_arg *arg, long long *val)
break;
*val = left + right;
break;
+ case '~':
+ ret = arg_num_eval(arg->op.right, &right);
+ if (!ret)
+ break;
+ *val = ~right;
+ break;
default:
do_warning("unknown op '%s'", arg->op.op);
ret = 0;