122 	struct nvkm_mmu_ptc *ptc;  in nvkm_mmu_ptc_find()  local
124 	list_for_each_entry(ptc, &mmu->ptc.list, head) {  in nvkm_mmu_ptc_find()
125 		if (ptc->size == size)  in nvkm_mmu_ptc_find()
126 			return ptc;  in nvkm_mmu_ptc_find()
129 	ptc = kmalloc(sizeof(*ptc), GFP_KERNEL);  in nvkm_mmu_ptc_find()
130 	if (ptc) {  in nvkm_mmu_ptc_find()
131 		INIT_LIST_HEAD(&ptc->item);  in nvkm_mmu_ptc_find()
132 		ptc->size = size;  in nvkm_mmu_ptc_find()
133 		ptc->refs = 0;  in nvkm_mmu_ptc_find()
134 		list_add(&ptc->head, &mmu->ptc.list);  in nvkm_mmu_ptc_find()
137 	return ptc;  in nvkm_mmu_ptc_find()
154 		mutex_lock(&mmu->ptc.mutex);  in nvkm_mmu_ptc_put()
155 		if (pt->ptc->refs < 8 /* Heuristic. */ && !force) {  in nvkm_mmu_ptc_put()
156 			list_add_tail(&pt->head, &pt->ptc->item);  in nvkm_mmu_ptc_put()
157 			pt->ptc->refs++;  in nvkm_mmu_ptc_put()
162 		mutex_unlock(&mmu->ptc.mutex);  in nvkm_mmu_ptc_put()
169 	struct nvkm_mmu_ptc *ptc;  in nvkm_mmu_ptc_get()  local
182 	mutex_lock(&mmu->ptc.mutex);  in nvkm_mmu_ptc_get()
183 	ptc = nvkm_mmu_ptc_find(mmu, size);  in nvkm_mmu_ptc_get()
184 	if (!ptc) {  in nvkm_mmu_ptc_get()
185 		mutex_unlock(&mmu->ptc.mutex);  in nvkm_mmu_ptc_get()
190 	pt = list_first_entry_or_null(&ptc->item, typeof(*pt), head);  in nvkm_mmu_ptc_get()
195 		ptc->refs--;  in nvkm_mmu_ptc_get()
196 		mutex_unlock(&mmu->ptc.mutex);  in nvkm_mmu_ptc_get()
199 	mutex_unlock(&mmu->ptc.mutex);  in nvkm_mmu_ptc_get()
204 	pt->ptc = ptc;  in nvkm_mmu_ptc_get()
222 	struct nvkm_mmu_ptc *ptc;  in nvkm_mmu_ptc_dump()  local
223 	list_for_each_entry(ptc, &mmu->ptc.list, head) {  in nvkm_mmu_ptc_dump()
225 		list_for_each_entry_safe(pt, tt, &ptc->item, head) {  in nvkm_mmu_ptc_dump()
236 	struct nvkm_mmu_ptc *ptc, *ptct;  in nvkm_mmu_ptc_fini()  local
238 	list_for_each_entry_safe(ptc, ptct, &mmu->ptc.list, head) {  in nvkm_mmu_ptc_fini()
239 		WARN_ON(!list_empty(&ptc->item));  in nvkm_mmu_ptc_fini()
240 		list_del(&ptc->head);  in nvkm_mmu_ptc_fini()
241 		kfree(ptc);  in nvkm_mmu_ptc_fini()
248 	mutex_init(&mmu->ptc.mutex);  in nvkm_mmu_ptc_init()
249 	INIT_LIST_HEAD(&mmu->ptc.list);  in nvkm_mmu_ptc_init()