From c50a291d621aa7abaa27b05f56d450a388b64948 Mon Sep 17 00:00:00 2001 From: Boris Brezillon Date: Mon, 4 Dec 2023 16:14:06 +0100 Subject: drm/gpuvm: Let drm_gpuvm_bo_put() report when the vm_bo object is destroyed Some users need to release resources attached to the vm_bo object when it's destroyed. In Panthor's case, we need to release the pin ref so BO pages can be returned to the system when all GPU mappings are gone. This could be done through a custom drm_gpuvm::vm_bo_free() hook, but this has all sort of locking implications that would force us to expose a drm_gem_shmem_unpin_locked() helper, not to mention the fact that having a ::vm_bo_free() implementation without a ::vm_bo_alloc() one seems odd. So let's keep things simple, and extend drm_gpuvm_bo_put() to report when the object is destroyed. Signed-off-by: Boris Brezillon Reviewed-by: Danilo Krummrich Link: https://patchwork.freedesktop.org/patch/msgid/20231204151406.1977285-1-boris.brezillon@collabora.com --- include/drm/drm_gpuvm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/drm') diff --git a/include/drm/drm_gpuvm.h b/include/drm/drm_gpuvm.h index b3f82ec7fb17..6258849382e1 100644 --- a/include/drm/drm_gpuvm.h +++ b/include/drm/drm_gpuvm.h @@ -721,7 +721,7 @@ drm_gpuvm_bo_get(struct drm_gpuvm_bo *vm_bo) return vm_bo; } -void drm_gpuvm_bo_put(struct drm_gpuvm_bo *vm_bo); +bool drm_gpuvm_bo_put(struct drm_gpuvm_bo *vm_bo); struct drm_gpuvm_bo * drm_gpuvm_bo_find(struct drm_gpuvm *gpuvm, -- cgit