kernel-ark/include/linux/spinlock_api_smp.h
Peter Zijlstra b7d39aff91 lockdep: spin_lock_nest_lock()
Expose the new lock protection lock.

This can be used to annotate places where we take multiple locks of the
same class and avoid deadlocks by always taking another (top-level) lock
first.

NOTE: we're still bound to the MAX_LOCK_DEPTH (48) limit.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-11 09:30:24 +02:00

64 lines
2.7 KiB
C

#ifndef __LINUX_SPINLOCK_API_SMP_H
#define __LINUX_SPINLOCK_API_SMP_H
#ifndef __LINUX_SPINLOCK_H
# error "please don't include this file directly"
#endif
/*
* include/linux/spinlock_api_smp.h
*
* spinlock API declarations on SMP (and debug)
* (implemented in kernel/spinlock.c)
*
* portions Copyright 2005, Red Hat, Inc., Ingo Molnar
* Released under the General Public License (GPL).
*/
int in_lock_functions(unsigned long addr);
#define assert_spin_locked(x) BUG_ON(!spin_is_locked(x))
void __lockfunc _spin_lock(spinlock_t *lock) __acquires(lock);
void __lockfunc _spin_lock_nested(spinlock_t *lock, int subclass)
__acquires(lock);
void __lockfunc _spin_lock_nest_lock(spinlock_t *lock, struct lockdep_map *map)
__acquires(lock);
void __lockfunc _read_lock(rwlock_t *lock) __acquires(lock);
void __lockfunc _write_lock(rwlock_t *lock) __acquires(lock);
void __lockfunc _spin_lock_bh(spinlock_t *lock) __acquires(lock);
void __lockfunc _read_lock_bh(rwlock_t *lock) __acquires(lock);
void __lockfunc _write_lock_bh(rwlock_t *lock) __acquires(lock);
void __lockfunc _spin_lock_irq(spinlock_t *lock) __acquires(lock);
void __lockfunc _read_lock_irq(rwlock_t *lock) __acquires(lock);
void __lockfunc _write_lock_irq(rwlock_t *lock) __acquires(lock);
unsigned long __lockfunc _spin_lock_irqsave(spinlock_t *lock)
__acquires(lock);
unsigned long __lockfunc _spin_lock_irqsave_nested(spinlock_t *lock, int subclass)
__acquires(lock);
unsigned long __lockfunc _read_lock_irqsave(rwlock_t *lock)
__acquires(lock);
unsigned long __lockfunc _write_lock_irqsave(rwlock_t *lock)
__acquires(lock);
int __lockfunc _spin_trylock(spinlock_t *lock);
int __lockfunc _read_trylock(rwlock_t *lock);
int __lockfunc _write_trylock(rwlock_t *lock);
int __lockfunc _spin_trylock_bh(spinlock_t *lock);
void __lockfunc _spin_unlock(spinlock_t *lock) __releases(lock);
void __lockfunc _read_unlock(rwlock_t *lock) __releases(lock);
void __lockfunc _write_unlock(rwlock_t *lock) __releases(lock);
void __lockfunc _spin_unlock_bh(spinlock_t *lock) __releases(lock);
void __lockfunc _read_unlock_bh(rwlock_t *lock) __releases(lock);
void __lockfunc _write_unlock_bh(rwlock_t *lock) __releases(lock);
void __lockfunc _spin_unlock_irq(spinlock_t *lock) __releases(lock);
void __lockfunc _read_unlock_irq(rwlock_t *lock) __releases(lock);
void __lockfunc _write_unlock_irq(rwlock_t *lock) __releases(lock);
void __lockfunc _spin_unlock_irqrestore(spinlock_t *lock, unsigned long flags)
__releases(lock);
void __lockfunc _read_unlock_irqrestore(rwlock_t *lock, unsigned long flags)
__releases(lock);
void __lockfunc _write_unlock_irqrestore(rwlock_t *lock, unsigned long flags)
__releases(lock);
#endif /* __LINUX_SPINLOCK_API_SMP_H */