diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon.h')
-rw-r--r-- | drivers/gpu/drm/radeon/radeon.h | 84 |
1 files changed, 42 insertions, 42 deletions
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index 73e05cb..1668ec1 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -157,6 +157,47 @@ bool radeon_get_bios(struct radeon_device *rdev); /* + * Mutex which allows recursive locking from the same process. + */ +struct radeon_mutex { + struct mutex mutex; + struct task_struct *owner; + int level; +}; + +static inline void radeon_mutex_init(struct radeon_mutex *mutex) +{ + mutex_init(&mutex->mutex); + mutex->owner = NULL; + mutex->level = 0; +} + +static inline void radeon_mutex_lock(struct radeon_mutex *mutex) +{ + if (mutex_trylock(&mutex->mutex)) { + /* The mutex was unlocked before, so it's ours now */ + mutex->owner = current; + } else if (mutex->owner != current) { + /* Another process locked the mutex, take it */ + mutex_lock(&mutex->mutex); + mutex->owner = current; + } + /* Otherwise the mutex was already locked by this process */ + + mutex->level++; +} + +static inline void radeon_mutex_unlock(struct radeon_mutex *mutex) +{ + if (--mutex->level > 0) + return; + + mutex->owner = NULL; + mutex_unlock(&mutex->mutex); +} + + +/* * Dummy page */ struct radeon_dummy_page { @@ -598,7 +639,7 @@ struct radeon_ib { * mutex protects scheduled_ibs, ready, alloc_bm */ struct radeon_ib_pool { - struct mutex mutex; + struct radeon_mutex mutex; struct radeon_sa_manager sa_manager; struct radeon_ib ibs[RADEON_IB_POOL_SIZE]; bool ready; @@ -1355,47 +1396,6 @@ struct r600_vram_scratch { /* - * Mutex which allows recursive locking from the same process. - */ -struct radeon_mutex { - struct mutex mutex; - struct task_struct *owner; - int level; -}; - -static inline void radeon_mutex_init(struct radeon_mutex *mutex) -{ - mutex_init(&mutex->mutex); - mutex->owner = NULL; - mutex->level = 0; -} - -static inline void radeon_mutex_lock(struct radeon_mutex *mutex) -{ - if (mutex_trylock(&mutex->mutex)) { - /* The mutex was unlocked before, so it's ours now */ - mutex->owner = current; - } else if (mutex->owner != current) { - /* Another process locked the mutex, take it */ - mutex_lock(&mutex->mutex); - mutex->owner = current; - } - /* Otherwise the mutex was already locked by this process */ - - mutex->level++; -} - -static inline void radeon_mutex_unlock(struct radeon_mutex *mutex) -{ - if (--mutex->level > 0) - return; - - mutex->owner = NULL; - mutex_unlock(&mutex->mutex); -} - - -/* * Core structure, functions and helpers. */ typedef uint32_t (*radeon_rreg_t)(struct radeon_device*, uint32_t); |