Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / sh / include / asm / futex-irq.h

diff --git a/kernel/arch/sh/include/asm/futex-irq.h b/kernel/arch/sh/include/asm/futex-irq.h
new file mode 100644 (file)
index 0000000..63d3312
--- /dev/null
+++ b/kernel/arch/sh/include/asm/futex-irq.h
@@ -0,0 +1,110 @@
+#ifndef __ASM_SH_FUTEX_IRQ_H
+#define __ASM_SH_FUTEX_IRQ_H
+
+
+static inline int atomic_futex_op_xchg_set(int oparg, u32 __user *uaddr,
+                                          int *oldval)
+{
+       unsigned long flags;
+       int ret;
+
+       local_irq_save(flags);
+
+       ret = get_user(*oldval, uaddr);
+       if (!ret)
+               ret = put_user(oparg, uaddr);
+
+       local_irq_restore(flags);
+
+       return ret;
+}
+
+static inline int atomic_futex_op_xchg_add(int oparg, u32 __user *uaddr,
+                                          int *oldval)
+{
+       unsigned long flags;
+       int ret;
+
+       local_irq_save(flags);
+
+       ret = get_user(*oldval, uaddr);
+       if (!ret)
+               ret = put_user(*oldval + oparg, uaddr);
+
+       local_irq_restore(flags);
+
+       return ret;
+}
+
+static inline int atomic_futex_op_xchg_or(int oparg, u32 __user *uaddr,
+                                         int *oldval)
+{
+       unsigned long flags;
+       int ret;
+
+       local_irq_save(flags);
+
+       ret = get_user(*oldval, uaddr);
+       if (!ret)
+               ret = put_user(*oldval | oparg, uaddr);
+
+       local_irq_restore(flags);
+
+       return ret;
+}
+
+static inline int atomic_futex_op_xchg_and(int oparg, u32 __user *uaddr,
+                                          int *oldval)
+{
+       unsigned long flags;
+       int ret;
+
+       local_irq_save(flags);
+
+       ret = get_user(*oldval, uaddr);
+       if (!ret)
+               ret = put_user(*oldval & oparg, uaddr);
+
+       local_irq_restore(flags);
+
+       return ret;
+}
+
+static inline int atomic_futex_op_xchg_xor(int oparg, u32 __user *uaddr,
+                                          int *oldval)
+{
+       unsigned long flags;
+       int ret;
+
+       local_irq_save(flags);
+
+       ret = get_user(*oldval, uaddr);
+       if (!ret)
+               ret = put_user(*oldval ^ oparg, uaddr);
+
+       local_irq_restore(flags);
+
+       return ret;
+}
+
+static inline int atomic_futex_op_cmpxchg_inatomic(u32 *uval,
+                                                  u32 __user *uaddr,
+                                                  u32 oldval, u32 newval)
+{
+       unsigned long flags;
+       int ret;
+       u32 prev = 0;
+
+       local_irq_save(flags);
+
+       ret = get_user(prev, uaddr);
+       if (!ret && oldval == prev)
+               ret = put_user(newval, uaddr);
+
+       local_irq_restore(flags);
+
+       *uval = prev;
+       return ret;
+}
+
+#endif /* __ASM_SH_FUTEX_IRQ_H */