RE: [RFC PATCH] dmabuf-sync: Introduce buffer synchronization framework

+static void dmabuf_sync_timeout_worker(struct work_struct *work) +{

• struct dmabuf_sync *sync = container_of(work, struct dmabuf_sync,

work);

• struct dmabuf_sync_object *sobj;
• mutex_lock(&sync->lock);
• list_for_each_entry(sobj, &sync->syncs, head) {

• if (WARN_ON(!sobj->robj))
  

• 	continue;
  

• printk(KERN_WARNING "%s: timeout = 0x%x [type = %d, " \
  

• 			"refcnt = %d, locked = %d]\n",
  

• 			sync->name, (u32)sobj->dmabuf,
  

• 			sobj->access_type,
  

atomic_read(&sobj->robj->shared_cnt),

• 			sobj->robj->locked);
  

• /* unlock only valid sync object. */
  

• if (!sobj->robj->locked)
  

• 	continue;
  

• if (sobj->robj->shared &&
  

• 		atomic_read(&sobj->robj->shared_cnt) > 1) {
  

• 	atomic_dec(&sobj->robj->shared_cnt);
  

• 	continue;
  

• }
  

• ww_mutex_unlock(&sobj->robj->lock);
  

• if (sobj->access_type & DMA_BUF_ACCESS_READ)
  

• 	printk(KERN_WARNING "%s: r-unlocked = 0x%x\n",
  

• 			sync->name, (u32)sobj->dmabuf);
  

• else
  

• 	printk(KERN_WARNING "%s: w-unlocked = 0x%x\n",
  

• 			sync->name, (u32)sobj->dmabuf);
  

+#if defined(CONFIG_DEBUG_FS)

• sync_debugfs_timeout_cnt++;
  

+#endif

Oops, unnecessary codes. will remove them.