diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/rwsem.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h index c8b543d428b0..544853bed5b9 100644 --- a/include/linux/rwsem.h +++ b/include/linux/rwsem.h @@ -132,6 +132,18 @@ static inline int rwsem_is_contended(struct rw_semaphore *sem) return !list_empty(&sem->wait_list); } +#if defined(CONFIG_DEBUG_RWSEMS) || defined(CONFIG_DETECT_HUNG_TASK_BLOCKER) +/* + * Return just the real task structure pointer of the owner + */ +extern struct task_struct *rwsem_owner(struct rw_semaphore *sem); + +/* + * Return true if the rwsem is owned by a reader. + */ +extern bool is_rwsem_reader_owned(struct rw_semaphore *sem); +#endif + #else /* !CONFIG_PREEMPT_RT */ #include <linux/rwbase_rt.h> |