summaryrefslogtreecommitdiffstats
path: root/include/asm-parisc/futex.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-parisc/futex.h')
-rw-r--r--include/asm-parisc/futex.h77
1 files changed, 0 insertions, 77 deletions
diff --git a/include/asm-parisc/futex.h b/include/asm-parisc/futex.h
deleted file mode 100644
index 0c705c3a55ef..000000000000
--- a/include/asm-parisc/futex.h
+++ /dev/null
@@ -1,77 +0,0 @@
-#ifndef _ASM_PARISC_FUTEX_H
-#define _ASM_PARISC_FUTEX_H
-
-#ifdef __KERNEL__
-
-#include <linux/futex.h>
-#include <linux/uaccess.h>
-#include <asm/errno.h>
-
-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;
- if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
- oparg = 1 << oparg;
-
- if (! access_ok (VERIFY_WRITE, uaddr, sizeof(int)))
- return -EFAULT;
-
- pagefault_disable();
-
- 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;
- }
-
- 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;
- }
- }
- return ret;
-}
-
-/* Non-atomic version */
-static inline int
-futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
-{
- int err = 0;
- int uval;
-
- /* futex.c wants to do a cmpxchg_inatomic on kernel NULL, which is
- * our gateway page, and causes no end of trouble...
- */
- if (segment_eq(KERNEL_DS, get_fs()) && !uaddr)
- return -EFAULT;
-
- if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
- return -EFAULT;
-
- err = get_user(uval, uaddr);
- if (err) return -EFAULT;
- if (uval == oldval)
- err = put_user(newval, uaddr);
- if (err) return -EFAULT;
- return uval;
-}
-
-#endif /*__KERNEL__*/
-#endif /*_ASM_PARISC_FUTEX_H*/
OpenPOWER on IntegriCloud