This patch series enables display of the size of driver-owned shmem BO's that aren't exposed to userspace through a DRM handle. Also fixes a use-after-free bug in the existing fdinfo implementation for Panthor. Discussion of previous revision can be found here [1]. Changelog: v9: - Added proper locking around group pool xarray to prevent UAF errors. - Added proper locking around vms pool xarray loop for the same reason - Added new patch that fixes UAF error because no locking when accessing fdinfo group stats. - Some minor cosmetic and naming changes. v8: - Made print_size public and added prefix argument for drm_print_memory_stats - Updated documentation commit to reflect new name tags - Some minor polishing v7: - Added new commit: mentions the formation rules for driver-specific fdinfo keys - Added new commit: adds a helper that lets driver print memory size key:value pairs with their driver name as a prefix. - Modified later commits to make use of the previous ones. - Deleted mentions of now unnecessary memory keys in the old revision. v6: - Replace up_write witnh up_read, which was left out in the previous version - Fixed some minor comment and documentation issues reported by the kernel test robot v5: - Replaced down_write semaphore with the read flavour - Fixed typo and added explicit description for drm-shared-internal in the fdinfo documentation file for Panthor. v4: - Remove unrelated formating fix - Moved calculating overall size of a group's kernel BO's into its own static helper. - Renamed group kernel BO's size aggregation function to better reflect its actual responsibility. [1] https://lore.kernel.org/dri-devel/20250114173406.3060248-1-adrian.larumbe@xxxxxxxxxxxxx/ Adrián Larumbe (5): Documentation/gpu: Clarify format of driver-specific fidnfo keys drm/file: Add fdinfo helper for printing regions with prefix drm/panthor: Expose size of driver internal BO's over fdinfo Documentation/gpu: Add fdinfo meanings of panthor-*-memory tags drm/panthor: Fix race condition when gathering fdinfo group samples Documentation/gpu/drm-usage-stats.rst | 5 ++- Documentation/gpu/panthor.rst | 10 +++++ drivers/gpu/drm/drm_file.c | 27 ++++++++---- drivers/gpu/drm/panthor/panthor_drv.c | 14 ++++++ drivers/gpu/drm/panthor/panthor_heap.c | 26 +++++++++++ drivers/gpu/drm/panthor/panthor_heap.h | 2 + drivers/gpu/drm/panthor/panthor_mmu.c | 36 +++++++++++++++ drivers/gpu/drm/panthor/panthor_mmu.h | 3 ++ drivers/gpu/drm/panthor/panthor_sched.c | 58 ++++++++++++++++++++++++- drivers/gpu/drm/panthor/panthor_sched.h | 3 ++ include/drm/drm_file.h | 5 +++ 11 files changed, 179 insertions(+), 10 deletions(-) base-commit: c6eabbab359c156669e10d5dec3e71e80ff09bd2 -- 2.47.1
