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-rw-r--r--Documentation/accounting/getdelays.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/accounting/getdelays.c b/Documentation/accounting/getdelays.c
index cc49400..7ea2311 100644
--- a/Documentation/accounting/getdelays.c
+++ b/Documentation/accounting/getdelays.c
@@ -392,6 +392,10 @@ int main(int argc, char *argv[])
goto err;
}
}
+ if (!maskset && !tid && !containerset) {
+ usage();
+ goto err;
+ }
do {
int i;
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