Merge commit 'origin' into master

Manual merge of:

	arch/powerpc/Kconfig
	arch/powerpc/include/asm/page.h

1 files changed, 0 insertions, 194 deletions

diff --git a/include/asm-parisc/spinlock.h b/include/asm-parisc/spinlock.h
deleted file mode 100644
index f3d2090a18dc..000000000000
--- a/include/asm-parisc/spinlock.h
+++ /dev/null
@@ -1,194 +0,0 @@
-#ifndef __ASM_SPINLOCK_H
-#define __ASM_SPINLOCK_H
-
-#include <asm/system.h>
-#include <asm/processor.h>
-#include <asm/spinlock_types.h>
-
-static inline int __raw_spin_is_locked(raw_spinlock_t *x)
-{
-	volatile unsigned int *a = __ldcw_align(x);
-	return *a == 0;
-}
-
-#define __raw_spin_lock(lock) __raw_spin_lock_flags(lock, 0)
-#define __raw_spin_unlock_wait(x) \
-		do { cpu_relax(); } while (__raw_spin_is_locked(x))
-
-static inline void __raw_spin_lock_flags(raw_spinlock_t *x,
-					 unsigned long flags)
-{
-	volatile unsigned int *a;
-
-	mb();
-	a = __ldcw_align(x);
-	while (__ldcw(a) == 0)
-		while (*a == 0)
-			if (flags & PSW_SM_I) {
-				local_irq_enable();
-				cpu_relax();
-				local_irq_disable();
-			} else
-				cpu_relax();
-	mb();
-}
-
-static inline void __raw_spin_unlock(raw_spinlock_t *x)
-{
-	volatile unsigned int *a;
-	mb();
-	a = __ldcw_align(x);
-	*a = 1;
-	mb();
-}
-
-static inline int __raw_spin_trylock(raw_spinlock_t *x)
-{
-	volatile unsigned int *a;
-	int ret;
-
-	mb();
-	a = __ldcw_align(x);
-        ret = __ldcw(a) != 0;
-	mb();
-
-	return ret;
-}
-
-/*
- * Read-write spinlocks, allowing multiple readers but only one writer.
- * Linux rwlocks are unfair to writers; they can be starved for an indefinite
- * time by readers.  With care, they can also be taken in interrupt context.
- *
- * In the PA-RISC implementation, we have a spinlock and a counter.
- * Readers use the lock to serialise their access to the counter (which
- * records how many readers currently hold the lock).
- * Writers hold the spinlock, preventing any readers or other writers from
- * grabbing the rwlock.
- */
-
-/* Note that we have to ensure interrupts are disabled in case we're
- * interrupted by some other code that wants to grab the same read lock */
-static  __inline__ void __raw_read_lock(raw_rwlock_t *rw)
-{
-	unsigned long flags;
-	local_irq_save(flags);
-	__raw_spin_lock_flags(&rw->lock, flags);
-	rw->counter++;
-	__raw_spin_unlock(&rw->lock);
-	local_irq_restore(flags);
-}
-
-/* Note that we have to ensure interrupts are disabled in case we're
- * interrupted by some other code that wants to grab the same read lock */
-static  __inline__ void __raw_read_unlock(raw_rwlock_t *rw)
-{
-	unsigned long flags;
-	local_irq_save(flags);
-	__raw_spin_lock_flags(&rw->lock, flags);
-	rw->counter--;
-	__raw_spin_unlock(&rw->lock);
-	local_irq_restore(flags);
-}
-
-/* Note that we have to ensure interrupts are disabled in case we're
- * interrupted by some other code that wants to grab the same read lock */
-static __inline__ int __raw_read_trylock(raw_rwlock_t *rw)
-{
-	unsigned long flags;
- retry:
-	local_irq_save(flags);
-	if (__raw_spin_trylock(&rw->lock)) {
-		rw->counter++;
-		__raw_spin_unlock(&rw->lock);
-		local_irq_restore(flags);
-		return 1;
-	}
-
-	local_irq_restore(flags);
-	/* If write-locked, we fail to acquire the lock */
-	if (rw->counter < 0)
-		return 0;
-
-	/* Wait until we have a realistic chance at the lock */
-	while (__raw_spin_is_locked(&rw->lock) && rw->counter >= 0)
-		cpu_relax();
-
-	goto retry;
-}
-
-/* Note that we have to ensure interrupts are disabled in case we're
- * interrupted by some other code that wants to read_trylock() this lock */
-static __inline__ void __raw_write_lock(raw_rwlock_t *rw)
-{
-	unsigned long flags;
-retry:
-	local_irq_save(flags);
-	__raw_spin_lock_flags(&rw->lock, flags);
-
-	if (rw->counter != 0) {
-		__raw_spin_unlock(&rw->lock);
-		local_irq_restore(flags);
-
-		while (rw->counter != 0)
-			cpu_relax();
-
-		goto retry;
-	}
-
-	rw->counter = -1; /* mark as write-locked */
-	mb();
-	local_irq_restore(flags);
-}
-
-static __inline__ void __raw_write_unlock(raw_rwlock_t *rw)
-{
-	rw->counter = 0;
-	__raw_spin_unlock(&rw->lock);
-}
-
-/* Note that we have to ensure interrupts are disabled in case we're
- * interrupted by some other code that wants to read_trylock() this lock */
-static __inline__ int __raw_write_trylock(raw_rwlock_t *rw)
-{
-	unsigned long flags;
-	int result = 0;
-
-	local_irq_save(flags);
-	if (__raw_spin_trylock(&rw->lock)) {
-		if (rw->counter == 0) {
-			rw->counter = -1;
-			result = 1;
-		} else {
-			/* Read-locked.  Oh well. */
-			__raw_spin_unlock(&rw->lock);
-		}
-	}
-	local_irq_restore(flags);
-
-	return result;
-}
-
-/*
- * read_can_lock - would read_trylock() succeed?
- * @lock: the rwlock in question.
- */
-static __inline__ int __raw_read_can_lock(raw_rwlock_t *rw)
-{
-	return rw->counter >= 0;
-}
-
-/*
- * write_can_lock - would write_trylock() succeed?
- * @lock: the rwlock in question.
- */
-static __inline__ int __raw_write_can_lock(raw_rwlock_t *rw)
-{
-	return !rw->counter;
-}
-
-#define _raw_spin_relax(lock)	cpu_relax()
-#define _raw_read_relax(lock)	cpu_relax()
-#define _raw_write_relax(lock)	cpu_relax()
-
-#endif /* __ASM_SPINLOCK_H */