30 /* Lock class keys for associating with real driver locks */
42  * amdgpu_lockdep_set_class - Associate lock class keys with real locks
45  * Call during device init to associate lock classes with actual locks
65  * Instantiates dummy objects and takes locks in the correct order to
92  * Note: mmap_lock ordering relative to GPU locks is already taught
98 	struct amdgpu_lockdep_dummy_locks *locks;  in amdgpu_lockdep_init()  local
101 	locks = kzalloc_obj(*locks);  in amdgpu_lockdep_init()
102 	if (!locks)  in amdgpu_lockdep_init()
111 		kfree(locks);  in amdgpu_lockdep_init()
114 	/* Initialize dummy locks */  in amdgpu_lockdep_init()
115 	mutex_init(&locks->userq_sch_mutex);  in amdgpu_lockdep_init()
116 	mutex_init(&locks->userq_mutex);  in amdgpu_lockdep_init()
117 	mutex_init(&locks->notifier_lock);  in amdgpu_lockdep_init()
118 	mutex_init(&locks->vram_lock);  in amdgpu_lockdep_init()
119 	mutex_init(&locks->reset_lock);  in amdgpu_lockdep_init()
120 	mutex_init(&locks->srbm_mutex);  in amdgpu_lockdep_init()
121 	mutex_init(&locks->grbm_idx_mutex);  in amdgpu_lockdep_init()
122 	spin_lock_init(&locks->mmio_idx_lock);  in amdgpu_lockdep_init()
125 	 * Associate dummy locks with the same class keys used for real  in amdgpu_lockdep_init()
126 	 * driver locks. This ensures lockdep connects the ordering learned  in amdgpu_lockdep_init()
127 	 * here with the actual locks used at runtime.  in amdgpu_lockdep_init()
129 	lockdep_set_class(&locks->userq_sch_mutex, &amdgpu_userq_sch_mutex_key);  in amdgpu_lockdep_init()
130 	lockdep_set_class(&locks->userq_mutex, &amdgpu_userq_mutex_key);  in amdgpu_lockdep_init()
131 	lockdep_set_class(&locks->notifier_lock, &amdgpu_notifier_lock_key);  in amdgpu_lockdep_init()
132 	lockdep_set_class(&locks->vram_lock, &amdgpu_vram_lock_key);  in amdgpu_lockdep_init()
134 	lockdep_set_class(&locks->reset_lock, &amdgpu_reset_lock_key);  in amdgpu_lockdep_init()
135 	lockdep_set_class(&locks->srbm_mutex, &amdgpu_srbm_lock_key);  in amdgpu_lockdep_init()
136 	lockdep_set_class(&locks->grbm_idx_mutex, &amdgpu_grbm_lock_key);  in amdgpu_lockdep_init()
137 	lockdep_set_class(&locks->mmio_idx_lock, &amdgpu_mmio_lock_key);  in amdgpu_lockdep_init()
140 	 * Register fs_reclaim lock class FIRST, before taking any locks.  in amdgpu_lockdep_init()
143 	 * (no locks are held between acquire and release). It only registers  in amdgpu_lockdep_init()
154 	 * Take locks in the correct order to train lockdep.  in amdgpu_lockdep_init()
159 	mutex_lock(&locks->userq_sch_mutex);  in amdgpu_lockdep_init()
162 	mutex_lock(&locks->userq_mutex);  in amdgpu_lockdep_init()
164 	mutex_lock(&locks->notifier_lock);  in amdgpu_lockdep_init()
166 	mutex_lock(&locks->vram_lock);  in amdgpu_lockdep_init()
171 	mutex_lock(&locks->reset_lock);  in amdgpu_lockdep_init()
174 	mutex_lock(&locks->srbm_mutex);  in amdgpu_lockdep_init()
176 	mutex_lock(&locks->grbm_idx_mutex);  in amdgpu_lockdep_init()
179 	spin_lock_irqsave(&locks->mmio_idx_lock, flags);  in amdgpu_lockdep_init()
181 	 * All locks acquired in order.  in amdgpu_lockdep_init()
186 	spin_unlock_irqrestore(&locks->mmio_idx_lock, flags);  in amdgpu_lockdep_init()
187 	mutex_unlock(&locks->grbm_idx_mutex);  in amdgpu_lockdep_init()
188 	mutex_unlock(&locks->srbm_mutex);  in amdgpu_lockdep_init()
190 	mutex_unlock(&locks->reset_lock);  in amdgpu_lockdep_init()
193 	mutex_unlock(&locks->vram_lock);  in amdgpu_lockdep_init()
194 	mutex_unlock(&locks->notifier_lock);  in amdgpu_lockdep_init()
195 	mutex_unlock(&locks->userq_mutex);  in amdgpu_lockdep_init()
196 	mutex_unlock(&locks->userq_sch_mutex);  in amdgpu_lockdep_init()
201 	kfree(locks);  in amdgpu_lockdep_init()