| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef __ASM_SH_FUTEX_IRQ_H |
| 3 | #define __ASM_SH_FUTEX_IRQ_H |
| 4 | |
| 5 | static inline int atomic_futex_op_cmpxchg_inatomic(u32 *uval, |
| 6 | u32 __user *uaddr, |
| 7 | u32 oldval, u32 newval) |
| 8 | { |
| 9 | unsigned long flags; |
| 10 | int ret; |
| 11 | u32 prev = 0; |
| 12 | |
| 13 | local_irq_save(flags); |
| 14 | |
| 15 | ret = get_user(prev, uaddr); |
| 16 | if (!ret && oldval == prev) |
| 17 | ret = put_user(newval, uaddr); |
| 18 | |
| 19 | local_irq_restore(flags); |
| 20 | |
| 21 | *uval = prev; |
| 22 | return ret; |
| 23 | } |
| 24 | |
| 25 | #endif /* __ASM_SH_FUTEX_IRQ_H */ |