pifutex 1949 kernel/futex.c futex_proxy_trylock_atomic(u32 __user *pifutex, struct futex_hash_bucket *hb1, pifutex 1958 kernel/futex.c if (get_futex_value_locked(&curval, pifutex)) pifutex 1988 kernel/futex.c ret = futex_lock_pi_atomic(pifutex, hb2, key2, ps, top_waiter->task,