* linux/spinlock.h: builds the final spin_*() APIs.
*/
+#include <linux/typecheck.h>
#include <linux/preempt.h>
#include <linux/linkage.h>
#include <linux/compiler.h>
#ifdef CONFIG_DEBUG_LOCK_ALLOC
# define spin_lock_nested(lock, subclass) _spin_lock_nested(lock, subclass)
+# define spin_lock_nest_lock(lock, nest_lock) \
+ do { \
+ typecheck(struct lockdep_map *, &(nest_lock)->dep_map);\
+ _spin_lock_nest_lock(lock, &(nest_lock)->dep_map); \
+ } while (0)
#else
# define spin_lock_nested(lock, subclass) _spin_lock(lock)
+# define spin_lock_nest_lock(lock, nest_lock) _spin_lock(lock)
#endif
#define write_lock(lock) _write_lock(lock)
#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK)
-#define spin_lock_irqsave(lock, flags) flags = _spin_lock_irqsave(lock)
-#define read_lock_irqsave(lock, flags) flags = _read_lock_irqsave(lock)
-#define write_lock_irqsave(lock, flags) flags = _write_lock_irqsave(lock)
+#define spin_lock_irqsave(lock, flags) \
+ do { \
+ typecheck(unsigned long, flags); \
+ flags = _spin_lock_irqsave(lock); \
+ } while (0)
+#define read_lock_irqsave(lock, flags) \
+ do { \
+ typecheck(unsigned long, flags); \
+ flags = _read_lock_irqsave(lock); \
+ } while (0)
+#define write_lock_irqsave(lock, flags) \
+ do { \
+ typecheck(unsigned long, flags); \
+ flags = _write_lock_irqsave(lock); \
+ } while (0)
#ifdef CONFIG_DEBUG_LOCK_ALLOC
-#define spin_lock_irqsave_nested(lock, flags, subclass) \
- flags = _spin_lock_irqsave_nested(lock, subclass)
+#define spin_lock_irqsave_nested(lock, flags, subclass) \
+ do { \
+ typecheck(unsigned long, flags); \
+ flags = _spin_lock_irqsave_nested(lock, subclass); \
+ } while (0)
#else
-#define spin_lock_irqsave_nested(lock, flags, subclass) \
- flags = _spin_lock_irqsave(lock)
+#define spin_lock_irqsave_nested(lock, flags, subclass) \
+ do { \
+ typecheck(unsigned long, flags); \
+ flags = _spin_lock_irqsave(lock); \
+ } while (0)
#endif
#else
-#define spin_lock_irqsave(lock, flags) _spin_lock_irqsave(lock, flags)
-#define read_lock_irqsave(lock, flags) _read_lock_irqsave(lock, flags)
-#define write_lock_irqsave(lock, flags) _write_lock_irqsave(lock, flags)
+#define spin_lock_irqsave(lock, flags) \
+ do { \
+ typecheck(unsigned long, flags); \
+ _spin_lock_irqsave(lock, flags); \
+ } while (0)
+#define read_lock_irqsave(lock, flags) \
+ do { \
+ typecheck(unsigned long, flags); \
+ _read_lock_irqsave(lock, flags); \
+ } while (0)
+#define write_lock_irqsave(lock, flags) \
+ do { \
+ typecheck(unsigned long, flags); \
+ _write_lock_irqsave(lock, flags); \
+ } while (0)
#define spin_lock_irqsave_nested(lock, flags, subclass) \
spin_lock_irqsave(lock, flags)
} while (0)
#endif
-#define spin_unlock_irqrestore(lock, flags) \
- _spin_unlock_irqrestore(lock, flags)
+#define spin_unlock_irqrestore(lock, flags) \
+ do { \
+ typecheck(unsigned long, flags); \
+ _spin_unlock_irqrestore(lock, flags); \
+ } while (0)
#define spin_unlock_bh(lock) _spin_unlock_bh(lock)
-#define read_unlock_irqrestore(lock, flags) \
- _read_unlock_irqrestore(lock, flags)
+#define read_unlock_irqrestore(lock, flags) \
+ do { \
+ typecheck(unsigned long, flags); \
+ _read_unlock_irqrestore(lock, flags); \
+ } while (0)
#define read_unlock_bh(lock) _read_unlock_bh(lock)
-#define write_unlock_irqrestore(lock, flags) \
- _write_unlock_irqrestore(lock, flags)
+#define write_unlock_irqrestore(lock, flags) \
+ do { \
+ typecheck(unsigned long, flags); \
+ _write_unlock_irqrestore(lock, flags); \
+ } while (0)
#define write_unlock_bh(lock) _write_unlock_bh(lock)
#define spin_trylock_bh(lock) __cond_lock(lock, _spin_trylock_bh(lock))
1 : ({ local_irq_restore(flags); 0; }); \
})
-/*
- * Locks two spinlocks l1 and l2.
- * l1_first indicates if spinlock l1 should be taken first.
- */
-static inline void double_spin_lock(spinlock_t *l1, spinlock_t *l2,
- bool l1_first)
- __acquires(l1)
- __acquires(l2)
-{
- if (l1_first) {
- spin_lock(l1);
- spin_lock(l2);
- } else {
- spin_lock(l2);
- spin_lock(l1);
- }
-}
-
-/*
- * Unlocks two spinlocks l1 and l2.
- * l1_taken_first indicates if spinlock l1 was taken first and therefore
- * should be released after spinlock l2.
- */
-static inline void double_spin_unlock(spinlock_t *l1, spinlock_t *l2,
- bool l1_taken_first)
- __releases(l1)
- __releases(l2)
-{
- if (l1_taken_first) {
- spin_unlock(l2);
- spin_unlock(l1);
- } else {
- spin_unlock(l1);
- spin_unlock(l2);
- }
-}
-
/*
* Pull the atomic_t declaration:
* (asm-mips/atomic.h needs above definitions)