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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1#ifndef __ASM_SH_FUTEX_IRQ_H
2#define __ASM_SH_FUTEX_IRQ_H
3
4static 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 */