On Thu, 30 Jan 2025 17:28:08 +0000 Adrián Larumbe <adrian.larumbe@xxxxxxxxxxxxx> wrote: > 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: > v10: > - Simplified locking scheme in panthor_vm_heaps_sizes > - Fixed kernel test robot warning about documentation > - Added some R-b tags to patches > 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/20250123225325.3271764-1-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 Queued to drm-misc-next. > > 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 | 33 ++++++++++++++ > 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, 176 insertions(+), 10 deletions(-) >
