void up_read(struct rw_semaphore *sem)
{
rwsem_release(&sem->dep_map, 1, _RET_IP_);
- DEBUG_RWSEMS_WARN_ON(!((unsigned long)sem->owner & RWSEM_READER_OWNED));
__up_read(sem);
}
void up_write(struct rw_semaphore *sem)
{
rwsem_release(&sem->dep_map, 1, _RET_IP_);
- DEBUG_RWSEMS_WARN_ON(sem->owner != current);
__up_write(sem);
}
void downgrade_write(struct rw_semaphore *sem)
{
lock_downgrade(&sem->dep_map, _RET_IP_);
- DEBUG_RWSEMS_WARN_ON(sem->owner != current);
__downgrade_write(sem);
}
*/
static inline void __down_read(struct rw_semaphore *sem)
{
- if (unlikely(atomic_long_inc_return_acquire(&sem->count) <= 0))
+ if (unlikely(atomic_long_inc_return_acquire(&sem->count) <= 0)) {
rwsem_down_read_failed(sem);
- else
+ DEBUG_RWSEMS_WARN_ON(!((unsigned long)sem->owner &
+ RWSEM_READER_OWNED));
+ } else {
rwsem_set_reader_owned(sem);
+ }
}
static inline int __down_read_killable(struct rw_semaphore *sem)
if (unlikely(atomic_long_inc_return_acquire(&sem->count) <= 0)) {
if (IS_ERR(rwsem_down_read_failed_killable(sem)))
return -EINTR;
+ DEBUG_RWSEMS_WARN_ON(!((unsigned long)sem->owner &
+ RWSEM_READER_OWNED));
} else {
rwsem_set_reader_owned(sem);
}
{
long tmp;
+ DEBUG_RWSEMS_WARN_ON(!((unsigned long)sem->owner & RWSEM_READER_OWNED));
rwsem_clear_reader_owned(sem);
tmp = atomic_long_dec_return_release(&sem->count);
if (unlikely(tmp < -1 && (tmp & RWSEM_ACTIVE_MASK) == 0))
*/
static inline void __up_write(struct rw_semaphore *sem)
{
+ DEBUG_RWSEMS_WARN_ON(sem->owner != current);
rwsem_clear_owner(sem);
if (unlikely(atomic_long_sub_return_release(RWSEM_ACTIVE_WRITE_BIAS,
&sem->count) < 0))
* read-locked region is ok to be re-ordered into the
* write side. As such, rely on RELEASE semantics.
*/
+ DEBUG_RWSEMS_WARN_ON(sem->owner != current);
tmp = atomic_long_add_return_release(-RWSEM_WAITING_BIAS, &sem->count);
rwsem_set_reader_owned(sem);
if (tmp < 0)