drm/nouveau/core/mm: dump mm when trying to tear one down that still has allocations (d7bda18c) · Commits · github.com / kvm-riscv / linux

drivers/gpu/drm/nouveau/core/core/mm.c

+32 −9

Original line number	Diff line number	Diff line
		@@ -28,6 +28,24 @@
		#define node(root, dir) ((root)->nl_entry.dir == &mm->nodes) ? NULL : \
		list_entry((root)->nl_entry.dir, struct nouveau_mm_node, nl_entry)

		static void
		nouveau_mm_dump(struct nouveau_mm mm, const char header)
		{
		struct nouveau_mm_node *node;

		printk(KERN_ERR "nouveau: %s\n", header);
		printk(KERN_ERR "nouveau: node list:\n");
		list_for_each_entry(node, &mm->nodes, nl_entry) {
		printk(KERN_ERR "nouveau: \t%08x %08x %d\n",
		node->offset, node->length, node->type);
		}
		printk(KERN_ERR "nouveau: free list:\n");
		list_for_each_entry(node, &mm->free, fl_entry) {
		printk(KERN_ERR "nouveau: \t%08x %08x %d\n",
		node->offset, node->length, node->type);
		}
		}

		void
		nouveau_mm_free(struct nouveau_mm mm, struct nouveau_mm_node *pthis)
		{
		@@ -239,18 +257,23 @@ nouveau_mm_init(struct nouveau_mm *mm, u32 offset, u32 length, u32 block)
		int
		nouveau_mm_fini(struct nouveau_mm *mm)
		{
		if (nouveau_mm_initialised(mm)) {
		struct nouveau_mm_node node, heap =
		list_first_entry(&mm->nodes, typeof(*heap), nl_entry);
		struct nouveau_mm_node node, temp;
		int nodes = 0;

		if (!nouveau_mm_initialised(mm))
		return 0;

		list_for_each_entry(node, &mm->nodes, nl_entry) {
		if (WARN_ON(nodes++ == mm->heap_nodes))
		if (++nodes > mm->heap_nodes) {
		nouveau_mm_dump(mm, "mm not clean!");
		return -EBUSY;
		}

		kfree(heap);
		}

		list_for_each_entry_safe(node, temp, &mm->nodes, nl_entry) {
		list_del(&node->nl_entry);
		kfree(node);
		}
		mm->heap_nodes = 0;
		return 0;
		}