drm/nouveau/perfmon: use private spinlock to control exclusive access to perfmon

nvkm_subdev.mutex is going away.

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

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/gpu/drm/nouveau/include/nvkm/engine/pm.h b/drivers/gpu/drm/nouveau/include/nvkm/engine/pm.h
index 4d754e7650d9..005409052d38 100644
--- a/drivers/gpu/drm/nouveau/include/nvkm/engine/pm.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/engine/pm.h
@@ -7,7 +7,10 @@ struct nvkm_pm {
 	const struct nvkm_pm_func *func;
 	struct nvkm_engine engine;
 
-	struct nvkm_object *perfmon;
+	struct {
+		spinlock_t lock;
+		struct nvkm_object *object;
+	} client;
 
 	struct list_head domains;
 	struct list_head sources;