drm/nouveau/nvif: give every mmu object a human-readable identifier

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>

drivers/gpu/drm/nouveau/include/nvif/mmu.h

@@ -31,8 +31,9 @@ struct nvif_mmu {
 	u8 *kind;
 };
 
-int nvif_mmu_init(struct nvif_object *, s32 oclass, struct nvif_mmu *);
-void nvif_mmu_fini(struct nvif_mmu *);
+int nvif_mmu_ctor(struct nvif_object *, const char *name, s32 oclass,
+		  struct nvif_mmu *);
+void nvif_mmu_dtor(struct nvif_mmu *);
 
 static inline bool
 nvif_mmu_kind_valid(struct nvif_mmu *mmu, u8 kind)

drivers/gpu/drm/nouveau/nouveau_drm.c

@@ -178,7 +178,7 @@ nouveau_cli_fini(struct nouveau_cli *cli)
 	usif_client_fini(cli);
 	nouveau_vmm_fini(&cli->svm);
 	nouveau_vmm_fini(&cli->vmm);
-	nvif_mmu_fini(&cli->mmu);
+	nvif_mmu_dtor(&cli->mmu);
 	nvif_device_dtor(&cli->device);
 	mutex_lock(&cli->drm->master.lock);
 	nvif_client_dtor(&cli->base);
@@ -254,7 +254,8 @@ nouveau_cli_init(struct nouveau_drm *drm, const char *sname,
 		goto done;
 	}
 
-	ret = nvif_mmu_init(&cli->device.object, mmus[ret].oclass, &cli->mmu);
+	ret = nvif_mmu_ctor(&cli->device.object, "drmMmu", mmus[ret].oclass,
+			    &cli->mmu);
 	if (ret) {
 		NV_PRINTK(err, cli, "MMU allocation failed: %d\n", ret);
 		goto done;

drivers/gpu/drm/nouveau/nvif/mmu.c

@@ -25,7 +25,7 @@
 #include <nvif/if0008.h>
 
 void
-nvif_mmu_fini(struct nvif_mmu *mmu)
+nvif_mmu_dtor(struct nvif_mmu *mmu)
 {
 	kfree(mmu->kind);
 	kfree(mmu->type);
@@ -34,7 +34,8 @@ nvif_mmu_fini(struct nvif_mmu *mmu)
 }
 
 int
-nvif_mmu_init(struct nvif_object *parent, s32 oclass, struct nvif_mmu *mmu)
+nvif_mmu_ctor(struct nvif_object *parent, const char *name, s32 oclass,
+	      struct nvif_mmu *mmu)
 {
 	static const struct nvif_mclass mems[] = {
 		{ NVIF_CLASS_MEM_GF100, -1 },
@@ -50,8 +51,8 @@ nvif_mmu_init(struct nvif_object *parent, s32 oclass, struct nvif_mmu *mmu)
 	mmu->type = NULL;
 	mmu->kind = NULL;
 
-	ret = nvif_object_ctor(parent, "nvifMmu", 0, oclass, &args,
-			       sizeof(args), &mmu->object);
+	ret = nvif_object_ctor(parent, name ? name : "nvifMmu", 0, oclass,
+			       &args, sizeof(args), &mmu->object);
 	if (ret)
 		goto done;
 
@@ -127,6 +128,6 @@ nvif_mmu_init(struct nvif_object *parent, s32 oclass, struct nvif_mmu *mmu)
 
 done:
 	if (ret)
-		nvif_mmu_fini(mmu);
+		nvif_mmu_dtor(mmu);
 	return ret;
 }