The patch titled
s390: futex atomic operations part 2
has been added to the -mm tree. Its filename is
s390-futex-atomic-operations-part-2.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
From: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Add missing primitive futex_atomic_cmpxchg_inatomic. Remove incorrect type
cast of uaddr memory constraint from __futex_atomic_op.
Signed-off-by: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
include/asm-s390/futex.h | 31 +++++++++++++++++++++++++++++--
1 files changed, 29 insertions(+), 2 deletions(-)
diff -puN include/asm-s390/futex.h~s390-futex-atomic-operations-part-2 include/asm-s390/futex.h
--- 25/include/asm-s390/futex.h~s390-futex-atomic-operations-part-2 Wed Apr 26 14:16:15 2006
+++ 25-akpm/include/asm-s390/futex.h Wed Apr 26 14:16:15 2006
@@ -30,9 +30,9 @@
"2:\n" \
__futex_atomic_fixup \
: "=d" (ret), "=&d" (oldval), "=&d" (newval), \
- "=m" (*(unsigned long __user *) uaddr) \
+ "=m" (*uaddr) \
: "0" (-EFAULT), "d" (oparg), "a" (uaddr), \
- "m" (*(unsigned long __user *) uaddr) : "cc" );
+ "m" (*uaddr) : "cc" );
static inline int futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
{
@@ -90,5 +90,32 @@ static inline int futex_atomic_op_inuser
return ret;
}
+static inline int
+futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval, int newval)
+{
+ int ret;
+
+ if (! access_ok (VERIFY_WRITE, uaddr, sizeof(int)))
+ return -EFAULT;
+ asm volatile(" cs %1,%4,0(%5)\n"
+ "0: lr %0,%1\n"
+ "1:\n"
+#ifndef __s390x__
+ ".section __ex_table,\"a\"\n"
+ " .align 4\n"
+ " .long 0b,1b\n"
+ ".previous"
+#else /* __s390x__ */
+ ".section __ex_table,\"a\"\n"
+ " .align 8\n"
+ " .quad 0b,1b\n"
+ ".previous"
+#endif /* __s390x__ */
+ : "=d" (ret), "+d" (oldval), "=m" (*uaddr)
+ : "0" (-EFAULT), "d" (newval), "a" (uaddr), "m" (*uaddr)
+ : "cc", "memory" );
+ return oldval;
+}
+
#endif /* __KERNEL__ */
#endif /* _ASM_S390_FUTEX_H */
_
Patches currently in -mm which might be from schwidefsky@xxxxxxxxxx are
s390-make-qeth-buildable.patch
s390-fix-i-o-termination-race-in-cio.patch
s390-enable-interrupts-on-error-path.patch
s390-bug-in-setup_rt_frame.patch
s390-alternate-signal-stack-handling-bug.patch
s390-qdio-memory-allocations.patch
s390-dasd-ioctl-never-returns.patch
s390-fix-slab-debugging.patch
s390-futex-atomic-operations.patch
s390-futex-atomic-operations-part-2.patch
s390-tape-3590-changes.patch
s390-segment-operation-error-codes.patch
s390-instruction-processing-damage-handling.patch
s390-add-read_mostly-optimization.patch
s390-dasd-device-identifiers.patch
s390-statistics-infrastructure.patch
-
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