diff options
Diffstat (limited to 'include/linux/local_lock_internal.h')
| -rw-r--r-- | include/linux/local_lock_internal.h | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/include/linux/local_lock_internal.h b/include/linux/local_lock_internal.h index d80b5306a2c0..a4dc479157b5 100644 --- a/include/linux/local_lock_internal.h +++ b/include/linux/local_lock_internal.h @@ -17,7 +17,10 @@ typedef struct { /* local_trylock() and local_trylock_irqsave() only work with local_trylock_t */ typedef struct { - local_lock_t llock; +#ifdef CONFIG_DEBUG_LOCK_ALLOC + struct lockdep_map dep_map; + struct task_struct *owner; +#endif u8 acquired; } local_trylock_t; @@ -31,7 +34,7 @@ typedef struct { .owner = NULL, # define LOCAL_TRYLOCK_DEBUG_INIT(lockname) \ - .llock = { LOCAL_LOCK_DEBUG_INIT((lockname).llock) }, + LOCAL_LOCK_DEBUG_INIT(lockname) static inline void local_lock_acquire(local_lock_t *l) { @@ -81,7 +84,7 @@ do { \ local_lock_debug_init(lock); \ } while (0) -#define __local_trylock_init(lock) __local_lock_init(lock.llock) +#define __local_trylock_init(lock) __local_lock_init((local_lock_t *)lock) #define __spinlock_nested_bh_init(lock) \ do { \ @@ -162,6 +165,9 @@ do { \ !!tl; \ }) +/* preemption or migration must be disabled before calling __local_lock_is_locked */ +#define __local_lock_is_locked(lock) READ_ONCE(this_cpu_ptr(lock)->acquired) + #define __local_lock_release(lock) \ do { \ local_trylock_t *tl; \ @@ -282,4 +288,8 @@ do { \ __local_trylock(lock); \ }) +/* migration must be disabled before calling __local_lock_is_locked */ +#define __local_lock_is_locked(__lock) \ + (rt_mutex_owner(&this_cpu_ptr(__lock)->lock) == current) + #endif /* CONFIG_PREEMPT_RT */ |