Annotate the trivial unconditional lock/unlock functions on SMP.

This does _not_ handle the conditional ones (lock_kernel and the
trylock variants), so there will be a fair number of context
error warnings with this. However, the warnings are disabled by
default in sparse - you have to use "-Wcontext" to see them.

include/linux/spinlock.h

@@ -42,33 +42,39 @@
 
 int __lockfunc _spin_trylock(spinlock_t *lock);
 int __lockfunc _write_trylock(rwlock_t *lock);
-void __lockfunc _spin_lock(spinlock_t *lock);
-void __lockfunc _write_lock(rwlock_t *lock);
-void __lockfunc _spin_lock(spinlock_t *lock);
-void __lockfunc _read_lock(rwlock_t *lock);
-void __lockfunc _spin_unlock(spinlock_t *lock);
-void __lockfunc _write_unlock(rwlock_t *lock);
-void __lockfunc _read_unlock(rwlock_t *lock);
-unsigned long __lockfunc _spin_lock_irqsave(spinlock_t *lock);
-unsigned long __lockfunc _read_lock_irqsave(rwlock_t *lock);
-unsigned long __lockfunc _write_lock_irqsave(rwlock_t *lock);
-void __lockfunc _spin_lock_irq(spinlock_t *lock);
-void __lockfunc _spin_lock_bh(spinlock_t *lock);
-void __lockfunc _read_lock_irq(rwlock_t *lock);
-void __lockfunc _read_lock_bh(rwlock_t *lock);
-void __lockfunc _write_lock_irq(rwlock_t *lock);
-void __lockfunc _write_lock_bh(rwlock_t *lock);
-void __lockfunc _spin_unlock_irqrestore(spinlock_t *lock, unsigned long flags);
-void __lockfunc _spin_unlock_irq(spinlock_t *lock);
-void __lockfunc _spin_unlock_bh(spinlock_t *lock);
-void __lockfunc _read_unlock_irqrestore(rwlock_t *lock, unsigned long flags);
-void __lockfunc _read_unlock_irq(rwlock_t *lock);
-void __lockfunc _read_unlock_bh(rwlock_t *lock);
-void __lockfunc _write_unlock_irqrestore(rwlock_t *lock, unsigned long flags);
-void __lockfunc _write_unlock_irq(rwlock_t *lock);
-void __lockfunc _write_unlock_bh(rwlock_t *lock);
+
+void __lockfunc _spin_lock(spinlock_t *lock)	__acquires(spinlock_t);
+void __lockfunc _read_lock(rwlock_t *lock)	__acquires(rwlock_t);
+void __lockfunc _write_lock(rwlock_t *lock)	__acquires(rwlock_t);
+
+void __lockfunc _spin_unlock(spinlock_t *lock)	__releases(spinlock_t);
+void __lockfunc _read_unlock(rwlock_t *lock)	__releases(rwlock_t);
+void __lockfunc _write_unlock(rwlock_t *lock)	__releases(rwlock_t);
+
+unsigned long __lockfunc _spin_lock_irqsave(spinlock_t *lock)	__acquires(spinlock_t);
+unsigned long __lockfunc _read_lock_irqsave(rwlock_t *lock)	__acquires(rwlock_t);
+unsigned long __lockfunc _write_lock_irqsave(rwlock_t *lock)	__acquires(rwlock_t);
+
+void __lockfunc _spin_lock_irq(spinlock_t *lock)	__acquires(spinlock_t);
+void __lockfunc _spin_lock_bh(spinlock_t *lock)		__acquires(spinlock_t);
+void __lockfunc _read_lock_irq(rwlock_t *lock)		__acquires(rwlock_t);
+void __lockfunc _read_lock_bh(rwlock_t *lock)		__acquires(rwlock_t);
+void __lockfunc _write_lock_irq(rwlock_t *lock)		__acquires(rwlock_t);
+void __lockfunc _write_lock_bh(rwlock_t *lock)		__acquires(rwlock_t);
+
+void __lockfunc _spin_unlock_irqrestore(spinlock_t *lock, unsigned long flags)	__releases(spinlock_t);
+void __lockfunc _spin_unlock_irq(spinlock_t *lock)				__releases(spinlock_t);
+void __lockfunc _spin_unlock_bh(spinlock_t *lock)				__releases(spinlock_t);
+void __lockfunc _read_unlock_irqrestore(rwlock_t *lock, unsigned long flags)	__releases(rwlock_t);
+void __lockfunc _read_unlock_irq(rwlock_t *lock)				__releases(rwlock_t);
+void __lockfunc _read_unlock_bh(rwlock_t *lock)					__releases(rwlock_t);
+void __lockfunc _write_unlock_irqrestore(rwlock_t *lock, unsigned long flags)	__releases(rwlock_t);
+void __lockfunc _write_unlock_irq(rwlock_t *lock)				__releases(rwlock_t);
+void __lockfunc _write_unlock_bh(rwlock_t *lock)				__releases(rwlock_t);
+
 int __lockfunc _spin_trylock_bh(spinlock_t *lock);
 int in_lock_functions(unsigned long addr);
+
 #else
 
 #define in_lock_functions(ADDR) 0