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Diffstat (limited to 'arch/x86/include/asm/futex.h')
-rw-r--r--arch/x86/include/asm/futex.h40
1 files changed, 5 insertions, 35 deletions
diff --git a/arch/x86/include/asm/futex.h b/arch/x86/include/asm/futex.h
index b4c1f5453436..f4dc9b63bdda 100644
--- a/arch/x86/include/asm/futex.h
+++ b/arch/x86/include/asm/futex.h
@@ -41,20 +41,11 @@
"+m" (*uaddr), "=&r" (tem) \
: "r" (oparg), "i" (-EFAULT), "1" (0))
-static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr)
+static inline int arch_futex_atomic_op_inuser(int op, int oparg, int *oval,
+ u32 __user *uaddr)
{
- int op = (encoded_op >> 28) & 7;
- int cmp = (encoded_op >> 24) & 15;
- int oparg = (encoded_op << 8) >> 20;
- int cmparg = (encoded_op << 20) >> 20;
int oldval = 0, ret, tem;
- if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
- oparg = 1 << oparg;
-
- if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
- return -EFAULT;
-
pagefault_disable();
switch (op) {
@@ -80,30 +71,9 @@ static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr)
pagefault_enable();
- if (!ret) {
- switch (cmp) {
- case FUTEX_OP_CMP_EQ:
- ret = (oldval == cmparg);
- break;
- case FUTEX_OP_CMP_NE:
- ret = (oldval != cmparg);
- break;
- case FUTEX_OP_CMP_LT:
- ret = (oldval < cmparg);
- break;
- case FUTEX_OP_CMP_GE:
- ret = (oldval >= cmparg);
- break;
- case FUTEX_OP_CMP_LE:
- ret = (oldval <= cmparg);
- break;
- case FUTEX_OP_CMP_GT:
- ret = (oldval > cmparg);
- break;
- default:
- ret = -ENOSYS;
- }
- }
+ if (!ret)
+ *oval = oldval;
+
return ret;
}