X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=include%2Fasm-s390%2Ffutex.h;h=5c5d02de49e9ae53fe5728fef181f1657fd4c3dc;hb=ff5d48a6d18d09bb750d1f89f6464f5fdb6fc85b;hp=2cac5ecd9d00b07132c0d4706141e0c342c0e4ac;hpb=2e66fc41169c90d93b7811caf7e7822de6aa2259;p=linux-2.6-omap-h63xx.git

diff --git a/include/asm-s390/futex.h b/include/asm-s390/futex.h
index 2cac5ecd9d0..5c5d02de49e 100644
--- a/include/asm-s390/futex.h
+++ b/include/asm-s390/futex.h
@@ -1,39 +1,29 @@
-#ifndef _ASM_FUTEX_H
-#define _ASM_FUTEX_H
+#ifndef _ASM_S390_FUTEX_H
+#define _ASM_S390_FUTEX_H
 
 #ifdef __KERNEL__
 
 #include <linux/futex.h>
+#include <linux/uaccess.h>
 #include <asm/errno.h>
-#include <asm/uaccess.h>
 
-static inline int
-futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
+static inline int futex_atomic_op_inuser (int encoded_op, int __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;
+	int oldval, ret;
+
 	if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
 		oparg = 1 << oparg;
 
 	if (! access_ok (VERIFY_WRITE, uaddr, sizeof(int)))
 		return -EFAULT;
 
-	inc_preempt_count();
-
-	switch (op) {
-	case FUTEX_OP_SET:
-	case FUTEX_OP_ADD:
-	case FUTEX_OP_OR:
-	case FUTEX_OP_ANDN:
-	case FUTEX_OP_XOR:
-	default:
-		ret = -ENOSYS;
-	}
-
-	dec_preempt_count();
+	pagefault_disable();
+	ret = uaccess.futex_atomic_op(op, uaddr, oparg, &oldval);
+	pagefault_enable();
 
 	if (!ret) {
 		switch (cmp) {
@@ -49,5 +39,14 @@ futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
 	return ret;
 }
 
-#endif
-#endif
+static inline int futex_atomic_cmpxchg_inatomic(int __user *uaddr,
+						int oldval, int newval)
+{
+	if (! access_ok (VERIFY_WRITE, uaddr, sizeof(int)))
+		return -EFAULT;
+
+	return uaccess.futex_atomic_cmpxchg(uaddr, oldval, newval);
+}
+
+#endif /* __KERNEL__ */
+#endif /* _ASM_S390_FUTEX_H */