[SPARC64]: Add rwlock_is_locked and in_atomic.

include/asm-sparc64/hardirq.h

@@ -85,8 +85,10 @@ typedef struct {
 #define irq_enter()		(preempt_count() += HARDIRQ_OFFSET)
 
 #if CONFIG_PREEMPT
+# define in_atomic()	(preempt_count() != kernel_locked())
 # define IRQ_EXIT_OFFSET (HARDIRQ_OFFSET-1)
 #else
+# define in_atomic()	(preempt_count() != 0)
 # define IRQ_EXIT_OFFSET HARDIRQ_OFFSET
 #endif
 #define irq_exit()							\

include/asm-sparc64/spinlock.h

@@ -112,6 +112,7 @@ extern int _spin_trylock (spinlock_t *lock);
 typedef unsigned int rwlock_t;
 #define RW_LOCK_UNLOCKED	0
 #define rwlock_init(lp) do { *(lp) = RW_LOCK_UNLOCKED; } while(0)
+#define rwlock_is_locked(x) (*(x) != RW_LOCK_UNLOCKED)
 
 extern void __read_lock(rwlock_t *);
 extern void __read_unlock(rwlock_t *);
@@ -132,6 +133,7 @@ typedef struct {
 } rwlock_t;
 #define RW_LOCK_UNLOCKED	(rwlock_t) { 0, 0, 0xff, { 0, 0, 0, 0 } }
 #define rwlock_init(lp) do { *(lp) = RW_LOCK_UNLOCKED; } while(0)
+#define rwlock_is_locked(x) ((x)->lock != 0)
 
 extern void _do_read_lock(rwlock_t *rw, char *str);
 extern void _do_read_unlock(rwlock_t *rw, char *str);