On Wed, 20 Oct 2021 20:10:23 -0700 Gurchetan Singh gurchetansingh@chromium.org wrote:
drm_gem_private_object_init(..) increases the total memory counter.
- All GEM objects (whether allocated or imported) seem to begin there.
- If there's a better place/method, please do let me know.
drm_gem_object_free(..) decreases the total memory counter.
Signed-off-by: Gurchetan Singh gurchetansingh@chromium.org
drivers/gpu/drm/drm_gem.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c index 24a719b79400..528d7b29dccf 100644 --- a/drivers/gpu/drm/drm_gem.c +++ b/drivers/gpu/drm/drm_gem.c @@ -213,6 +213,7 @@ void drm_gem_private_object_init(struct drm_device *dev, obj->resv = &obj->_resv;
drm_vma_node_reset(&obj->vma_node);
To save yourself a function call when tracing is disabled, you can add:
if (trace_gpu_mem_total_enabled())
here, which is a static_branch (meaning it's not a compare and branch, but a nop when tracing is disabled, and a jmp (to the if block) when the event is enabled).
- drm_gem_trace_gpu_mem_total(dev, obj->size, false);
} EXPORT_SYMBOL(drm_gem_private_object_init);
@@ -1015,6 +1016,10 @@ drm_gem_object_free(struct kref *kref) struct drm_gem_object *obj = container_of(kref, struct drm_gem_object, refcount);
- struct drm_device *dev = obj->dev;
Same here.
-- Steve
- drm_gem_trace_gpu_mem_total(dev, -obj->size, false);
- if (WARN_ON(!obj->funcs->free)) return;