diff options
Diffstat (limited to 'drivers/gpu/drm/msm/msm_gem_shrinker.c')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_gem_shrinker.c | 34 |
1 files changed, 14 insertions, 20 deletions
diff --git a/drivers/gpu/drm/msm/msm_gem_shrinker.c b/drivers/gpu/drm/msm/msm_gem_shrinker.c index 283d2841ba58..ab1dd020eb04 100644 --- a/drivers/gpu/drm/msm/msm_gem_shrinker.c +++ b/drivers/gpu/drm/msm/msm_gem_shrinker.c @@ -18,33 +18,24 @@ #include "msm_drv.h" #include "msm_gem.h" -static bool mutex_is_locked_by(struct mutex *mutex, struct task_struct *task) +static bool msm_gem_shrinker_lock(struct drm_device *dev, bool *unlock) { - if (!mutex_is_locked(mutex)) + switch (mutex_trylock_recursive(&dev->struct_mutex)) { + case MUTEX_TRYLOCK_FAILED: return false; -#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_MUTEXES) - return mutex->owner == task; -#else - /* Since UP may be pre-empted, we cannot assume that we own the lock */ - return false; -#endif -} + case MUTEX_TRYLOCK_SUCCESS: + *unlock = true; + return true; -static bool msm_gem_shrinker_lock(struct drm_device *dev, bool *unlock) -{ - if (!mutex_trylock(&dev->struct_mutex)) { - if (!mutex_is_locked_by(&dev->struct_mutex, current)) - return false; + case MUTEX_TRYLOCK_RECURSIVE: *unlock = false; - } else { - *unlock = true; + return true; } - return true; + BUG(); } - static unsigned long msm_gem_shrinker_count(struct shrinker *shrinker, struct shrink_control *sc) { @@ -163,6 +154,9 @@ void msm_gem_shrinker_init(struct drm_device *dev) void msm_gem_shrinker_cleanup(struct drm_device *dev) { struct msm_drm_private *priv = dev->dev_private; - WARN_ON(unregister_vmap_purge_notifier(&priv->vmap_notifier)); - unregister_shrinker(&priv->shrinker); + + if (priv->shrinker.nr_deferred) { + WARN_ON(unregister_vmap_purge_notifier(&priv->vmap_notifier)); + unregister_shrinker(&priv->shrinker); + } } |
