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Linux/arch/sh/include/asm/futex-irq.h

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  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 */
 26 

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