[v5,0/4] Panthor BO tagging and GEMS debug display

Message

Adrián Larumbe April 8, 2025, 10:24 p.m. UTC

This patch series is aimed at providing UM with detailed memory profiling
information in debug builds. It is achieved through a device-wide list of
DRM GEM objects, and also implementing the ability to label BO's from UM
through a new IOCTL.

The new debugfs file shows a list of driver DRM GEM objects in tabular mode.
To visualise it, cat sudo cat /sys/kernel/debug/dri/*.gpu/gems.
To test this functionality from UM, please refer to this Mesa patch series:
https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34224

Discussion of previous revision of this patch series can be found at:
https://lore.kernel.org/dri-devel/[e-mail]/

Changelog:
v5:
 - Kept case and naming of kernel BO's consistent
 - Increased the driver minor after new ioctl
 - Now adds BO to debugfs GEMs list at GEM object creation time
 - No longer try to hide BO creator's name when it's a workqueue or modprobe
 - Reworked the procedure for printing GEM state and kernel BO flags
 - Turned kernel BO flags and GEM state flags into bit enums
 - Wait until BO state is marked as initialied for debugfs display

v4:
 - Labelled all kernel BO's, not just heap chunks.
 - Refactored DebugGFs GEMs list handling functions
 - Added debugfs GEMS node mask to tell different kinds of BO's

Adrián Larumbe (4):
  drm/panthor: Introduce BO labeling
  drm/panthor: Add driver IOCTL for setting BO labels
  drm/panthor: Label all kernel BO's
  drm/panthor: show device-wide list of DRM GEM objects over DebugFS

 drivers/gpu/drm/panthor/panthor_device.c |   5 +
 drivers/gpu/drm/panthor/panthor_device.h |  11 ++
 drivers/gpu/drm/panthor/panthor_drv.c    |  68 +++++++-
 drivers/gpu/drm/panthor/panthor_fw.c     |   8 +-
 drivers/gpu/drm/panthor/panthor_gem.c    | 210 ++++++++++++++++++++++-
 drivers/gpu/drm/panthor/panthor_gem.h    |  86 +++++++++-
 drivers/gpu/drm/panthor/panthor_heap.c   |   6 +-
 drivers/gpu/drm/panthor/panthor_sched.c  |   9 +-
 include/uapi/drm/panthor_drm.h           |  19 ++
 9 files changed, 411 insertions(+), 11 deletions(-)

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2.48.1