1 #ifndef __ASM_SH_FUTEX_IRQ_H 2 #define __ASM_SH_FUTEX_IRQ_H 3 4 static inline int atomic_futex_op_cmpxchg_inatomic(u32 *uval, 5 u32 __user *uaddr, 6 u32 oldval, u32 newval) 7 { 8 unsigned long flags; 9 int ret; 10 u32 prev = 0; 11 12 local_irq_save(flags); 13 14 ret = get_user(prev, uaddr); 15 if (!ret && oldval == prev) 16 ret = put_user(newval, uaddr); 17 18 local_irq_restore(flags); 19 20 *uval = prev; 21 return ret; 22 } 23 24 #endif /* __ASM_SH_FUTEX_IRQ_H */ 25