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-rw-r--r--arch/powerpc/include/asm/barrier.h7
-rw-r--r--arch/powerpc/include/asm/futex.h26
-rw-r--r--arch/powerpc/include/asm/spinlock.h3
3 files changed, 8 insertions, 28 deletions
diff --git a/arch/powerpc/include/asm/barrier.h b/arch/powerpc/include/asm/barrier.h
index 25d42bd3f114..9c601adfc500 100644
--- a/arch/powerpc/include/asm/barrier.h
+++ b/arch/powerpc/include/asm/barrier.h
@@ -74,13 +74,6 @@ do { \
___p1; \
})
-/*
- * This must resolve to hwsync on SMP for the context switch path.
- * See _switch, and core scheduler context switch memory ordering
- * comments.
- */
-#define smp_mb__before_spinlock() smp_mb()
-
#include <asm-generic/barrier.h>
#endif /* _ASM_POWERPC_BARRIER_H */
diff --git a/arch/powerpc/include/asm/futex.h b/arch/powerpc/include/asm/futex.h
index eaada6c92344..719ed9b61ea7 100644
--- a/arch/powerpc/include/asm/futex.h
+++ b/arch/powerpc/include/asm/futex.h
@@ -29,18 +29,10 @@
: "b" (uaddr), "i" (-EFAULT), "r" (oparg) \
: "cr0", "memory")
-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;
- if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28))
- oparg = 1 << oparg;
-
- if (! access_ok (VERIFY_WRITE, uaddr, sizeof(u32)))
- return -EFAULT;
pagefault_disable();
@@ -66,17 +58,9 @@ 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;
}
diff --git a/arch/powerpc/include/asm/spinlock.h b/arch/powerpc/include/asm/spinlock.h
index d256e448ea49..edbe571bcc54 100644
--- a/arch/powerpc/include/asm/spinlock.h
+++ b/arch/powerpc/include/asm/spinlock.h
@@ -309,5 +309,8 @@ static inline void arch_write_unlock(arch_rwlock_t *rw)
#define arch_read_relax(lock) __rw_yield(lock)
#define arch_write_relax(lock) __rw_yield(lock)
+/* See include/linux/spinlock.h */
+#define smp_mb__after_spinlock() smp_mb()
+
#endif /* __KERNEL__ */
#endif /* __ASM_SPINLOCK_H */