[PATCH v3 0/7] Support fdinfo runtime and memory stats on Panthor

[Adrián Larumbe]

This patch series enables userspace utilities like gputop and nvtop to
query a render context's fdinfo file and figure out rates of engine
and memory utilisation.

Previous discussion can be found at
https://lore.kernel.org/dri-devel/20240423213240.91412-1-adrian.larumbe@collabora.com/

Changelog:
v3:
 - Fixed some nits and removed useless bounds check in panthor_sched.c
 - Added support for sysfs profiling knob and optional job accounting
 - Added new patches for calculating size of internal BO's
v2:
 - Split original first patch in two, one for FW CS cycle and timestamp
 calculations and job accounting memory management, and a second one
 that enables fdinfo.
 - Moved NUM_INSTRS_PER_SLOT to the file prelude
 - Removed nelem variable from the group's struct definition.
 - Precompute size of group's syncobj BO to avoid code duplication.
 - Some minor nits.


Adrián Larumbe (7):
  drm/panthor: introduce job cycle and timestamp accounting
  drm/panthor: add DRM fdinfo support
  drm/panthor: enable fdinfo for memory stats
  drm/panthor: add sysfs knob for enabling job profiling
  drm/panthor: support job accounting
  drm/drm_file: add display of driver's internal memory size
  drm/panthor: register size of internal objects through fdinfo

 Documentation/gpu/drm-usage-stats.rst     |   4 +
 drivers/gpu/drm/drm_file.c                |   9 +-
 drivers/gpu/drm/msm/msm_drv.c             |   2 +-
 drivers/gpu/drm/panfrost/panfrost_drv.c   |   2 +-
 drivers/gpu/drm/panthor/panthor_devfreq.c |  10 +
 drivers/gpu/drm/panthor/panthor_device.c  |   2 +
 drivers/gpu/drm/panthor/panthor_device.h  |  21 ++
 drivers/gpu/drm/panthor/panthor_drv.c     |  83 +++++-
 drivers/gpu/drm/panthor/panthor_fw.c      |  16 +-
 drivers/gpu/drm/panthor/panthor_fw.h      |   5 +-
 drivers/gpu/drm/panthor/panthor_gem.c     |  67 ++++-
 drivers/gpu/drm/panthor/panthor_gem.h     |  16 +-
 drivers/gpu/drm/panthor/panthor_heap.c    |  23 +-
 drivers/gpu/drm/panthor/panthor_heap.h    |   6 +-
 drivers/gpu/drm/panthor/panthor_mmu.c     |   8 +-
 drivers/gpu/drm/panthor/panthor_mmu.h     |   3 +-
 drivers/gpu/drm/panthor/panthor_sched.c   | 304 +++++++++++++++++++---
 include/drm/drm_file.h                    |   7 +-
 18 files changed, 522 insertions(+), 66 deletions(-)


base-commit: 310ec03841a36e3f45fb528f0dfdfe5b9e84b037
-- 
2.45.1