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26 lines
482 B
26 lines
482 B
3 years ago
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/* 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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