#include <asm/atomic.h>
#include <asm/rwlock.h>
#include <asm/page.h>
-#include <linux/config.h>
/*
* Your basic SMP spinlocks, allowing only a single CPU anywhere
*/
#define __raw_spin_is_locked(x) \
- (*(volatile signed char *)(&(x)->slock) <= 0)
+ (*(volatile signed int *)(&(x)->slock) <= 0)
#define __raw_spin_lock_string \
"\n1:\t" \
- "lock ; decb %0\n\t" \
+ LOCK_PREFIX " ; decl %0\n\t" \
"js 2f\n" \
LOCK_SECTION_START("") \
"2:\t" \
"rep;nop\n\t" \
- "cmpb $0,%0\n\t" \
+ "cmpl $0,%0\n\t" \
"jle 2b\n\t" \
"jmp 1b\n" \
LOCK_SECTION_END
+#define __raw_spin_lock_string_up \
+ "\n\tdecl %0"
+
#define __raw_spin_unlock_string \
- "movb $1,%0" \
+ "movl $1,%0" \
:"=m" (lock->slock) : : "memory"
static inline void __raw_spin_lock(raw_spinlock_t *lock)
{
- __asm__ __volatile__(
- __raw_spin_lock_string
- :"=m" (lock->slock) : : "memory");
+ asm volatile(__raw_spin_lock_string : "=m" (lock->slock) : : "memory");
}
#define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock)
static inline int __raw_spin_trylock(raw_spinlock_t *lock)
{
- char oldval;
+ int oldval;
__asm__ __volatile__(
- "xchgb %b0,%1"
+ "xchgl %0,%1"
:"=q" (oldval), "=m" (lock->slock)
:"0" (0) : "memory");
static inline void __raw_read_unlock(raw_rwlock_t *rw)
{
- asm volatile("lock ; incl %0" :"=m" (rw->lock) : : "memory");
+ asm volatile(LOCK_PREFIX " ; incl %0" :"=m" (rw->lock) : : "memory");
}
static inline void __raw_write_unlock(raw_rwlock_t *rw)
{
- asm volatile("lock ; addl $" RW_LOCK_BIAS_STR ",%0"
+ asm volatile(LOCK_PREFIX " ; addl $" RW_LOCK_BIAS_STR ",%0"
: "=m" (rw->lock) : : "memory");
}