1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Futex2 library addons for futex tests 4 * 5 * Copyright 2021 Collabora Ltd. 6 */ 7 #include <stdint.h> 8 9 #define u64_to_ptr(x) ((void *)(uintptr_t)(x)) 10 11 #ifndef __NR_futex_waitv 12 #define __NR_futex_waitv 449 13 struct futex_waitv { 14 __u64 val; 15 __u64 uaddr; 16 __u32 flags; 17 __u32 __reserved; 18 }; 19 #endif 20 21 #ifndef FUTEX2_SIZE_U32 22 #define FUTEX2_SIZE_U32 0x02 23 #endif 24 25 #ifndef FUTEX_32 26 #define FUTEX_32 FUTEX2_SIZE_U32 27 #endif 28 29 /** 30 * futex_waitv - Wait at multiple futexes, wake on any 31 * @waiters: Array of waiters 32 * @nr_waiters: Length of waiters array 33 * @flags: Operation flags 34 * @timo: Optional timeout for operation 35 */ 36 static inline int futex_waitv(volatile struct futex_waitv *waiters, unsigned long nr_waiters, 37 unsigned long flags, struct timespec *timo, clockid_t clockid) 38 { 39 return syscall(__NR_futex_waitv, waiters, nr_waiters, flags, timo, clockid); 40 } 41