FUTEX_WAIT_BITSET   20 include/uapi/linux/futex.h #define FUTEX_WAIT_BITSET	9
FUTEX_WAIT_BITSET    5 tools/perf/trace/beauty/futex_op.c #define FUTEX_WAIT_BITSET	  9
FUTEX_WAIT_BITSET   30 tools/testing/selftests/futex/include/futextest.h #define FUTEX_WAIT_BITSET		9