[PATCH v8 4/5] drm/panthor: enable fdinfo for memory stats

Adrián Larumbe
2024-09-23T23:09:53Z

Implement drm object's status callback.

Also, we consider a PRIME imported BO to be resident if its matching
dma_buf has an open attachment, which means its backing storage had already
been allocated.

Signed-off-by: Adrián Larumbe <adrian.larumbe@collabora.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
---
drivers/gpu/drm/panthor/panthor_gem.c | 12 ++++++++++++
1 file changed, 12 insertions(+)

diff --git a/drivers/gpu/drm/panthor/panthor_gem.c b/drivers/gpu/drm/panthor/panthor_gem.c
index 38f560864879..c60b599665d8 100644
--- a/drivers/gpu/drm/panthor/panthor_gem.c
+++ b/drivers/gpu/drm/panthor/panthor_gem.c
@@ -145,6 +145,17 @@ panthor_gem_prime_export(struct drm_gem_object *obj, int flags)
return drm_gem_prime_export(obj, flags);
}

+static enum drm_gem_object_status panthor_gem_status(struct drm_gem_object *obj)
+{
+ struct panthor_gem_object *bo = to_panthor_bo(obj);
+ enum drm_gem_object_status res = 0;
+
+ if (bo->base.base.import_attach || bo->base.pages)
+ res |= DRM_GEM_OBJECT_RESIDENT;
+
+ return res;
+}
+
static const struct drm_gem_object_funcs panthor_gem_funcs = {
.free = panthor_gem_free_object,
.print_info = drm_gem_shmem_object_print_info,
@@ -154,6 +165,7 @@ static const struct drm_gem_object_funcs panthor_gem_funcs = {
.vmap = drm_gem_shmem_object_vmap,
.vunmap = drm_gem_shmem_object_vunmap,
.mmap = panthor_gem_mmap,
+ .status = panthor_gem_status,
.export = panthor_gem_prime_export,
.vm_ops = &drm_gem_shmem_vm_ops,
};
--
2.46.0