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Diffstat (limited to 'linux-core/drm_lock.c')
-rw-r--r--linux-core/drm_lock.c59
1 files changed, 0 insertions, 59 deletions
diff --git a/linux-core/drm_lock.c b/linux-core/drm_lock.c
index d2fb1feb..e8bdad92 100644
--- a/linux-core/drm_lock.c
+++ b/linux-core/drm_lock.c
@@ -384,65 +384,6 @@ void drm_idlelock_release(struct drm_lock_data *lock_data)
}
EXPORT_SYMBOL(drm_idlelock_release);
-/**
- * Takes the lock on behalf of the client if needed, using the kernel context.
- *
- * This allows us to hide the hardware lock when it's required for protection
- * of data structures (such as command ringbuffer) shared with the X Server, an
-
- * a way for us to transition to lockless for those requests when the X Server
- * stops accessing the ringbuffer directly, without having to update the
- * other userland clients.
- */
-int drm_client_lock_take(struct drm_device *dev, struct drm_file *file_priv)
-{
- struct drm_master *master = file_priv->master;
- int ret;
- unsigned long irqflags;
-
- /* If the client has the lock, we're already done. */
- if (drm_i_have_hw_lock(dev, file_priv))
- return 0;
-
- mutex_unlock (&dev->struct_mutex);
- /* Client doesn't hold the lock. Block taking the lock with the kernel
- * context on behalf of the client, and return whether we were
- * successful.
- */
- spin_lock_irqsave(&master->lock.spinlock, irqflags);
- master->lock.user_waiters++;
- spin_unlock_irqrestore(&master->lock.spinlock, irqflags);
- ret = wait_event_interruptible(master->lock.lock_queue,
- drm_lock_take(&master->lock,
- DRM_KERNEL_CONTEXT));
- spin_lock_irqsave(&master->lock.spinlock, irqflags);
- master->lock.user_waiters--;
- if (ret != 0) {
- spin_unlock_irqrestore(&master->lock.spinlock, irqflags);
- } else {
- master->lock.file_priv = file_priv;
- master->lock.lock_time = jiffies;
- master->lock.kernel_held = 1;
- file_priv->lock_count++;
- spin_unlock_irqrestore(&master->lock.spinlock, irqflags);
- }
- mutex_lock (&dev->struct_mutex);
- return ret;
-}
-EXPORT_SYMBOL(drm_client_lock_take);
-
-void drm_client_lock_release(struct drm_device *dev, struct drm_file *file_priv)
-{
- struct drm_master *master = file_priv->master;
-
- if (master->lock.kernel_held) {
- master->lock.kernel_held = 0;
- master->lock.file_priv = NULL;
- drm_lock_free(&master->lock, DRM_KERNEL_CONTEXT);
- }
-}
-EXPORT_SYMBOL(drm_client_lock_release);
-
int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv)
{
struct drm_master *master = file_priv->master;