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25 lines
482 B
25 lines
482 B
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef __ASM_SH_FUTEX_IRQ_H |
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#define __ASM_SH_FUTEX_IRQ_H |
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static inline int atomic_futex_op_cmpxchg_inatomic(u32 *uval, |
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u32 __user *uaddr, |
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u32 oldval, u32 newval) |
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{ |
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unsigned long flags; |
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int ret; |
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u32 prev = 0; |
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local_irq_save(flags); |
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ret = get_user(prev, uaddr); |
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if (!ret && oldval == prev) |
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ret = put_user(newval, uaddr); |
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local_irq_restore(flags); |
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*uval = prev; |
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return ret; |
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} |
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#endif /* __ASM_SH_FUTEX_IRQ_H */
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