This patch series adds fdinfo support to the Panfrost DRM driver. It will
display a series of key:value pairs under /proc/pid/fdinfo/fd for render
processes that open the Panfrost DRM file.

The pairs contain basic drm gpu engine and memory region information that
can either be cat by a privileged user or accessed with IGT's gputop
utility.

Changelog:

v2:
 - Changed the way gpu cycles and engine time are calculated, using GPU
 registers and taking into account potential resets.
 - Split render engine values into fragment and vertex/tiler ones.
 - Added more fine-grained calculation of RSS size for BO's.
 - Implemente selection of drm-memory region size units
 - Removed locking of shrinker's mutex in GEM obj status function

Adrián Larumbe (6):
  drm/panfrost: Add cycle count GPU register definitions
  drm/panfrost: Add fdinfo support GPU load metrics
  drm/panfrost: Add fdinfo support for memory stats
  drm/drm_file: Add DRM obj's RSS reporting function for fdinfo
  drm/panfrost: Implement generic DRM object RSS reporting function
  drm/drm-file: Allow size unit selection in drm_show_memory_stats

 drivers/gpu/drm/drm_file.c                  | 27 +++++++----
 drivers/gpu/drm/msm/msm_drv.c               |  2 +-
 drivers/gpu/drm/panfrost/panfrost_devfreq.c |  8 +++
 drivers/gpu/drm/panfrost/panfrost_devfreq.h |  3 ++
 drivers/gpu/drm/panfrost/panfrost_device.h  | 13 +++++
 drivers/gpu/drm/panfrost/panfrost_drv.c     | 54 +++++++++++++++++++--
 drivers/gpu/drm/panfrost/panfrost_gem.c     | 34 +++++++++++++
 drivers/gpu/drm/panfrost/panfrost_gem.h     |  6 +++
 drivers/gpu/drm/panfrost/panfrost_job.c     | 30 ++++++++++++
 drivers/gpu/drm/panfrost/panfrost_job.h     |  4 ++
 drivers/gpu/drm/panfrost/panfrost_mmu.c     | 16 ++++--
 drivers/gpu/drm/panfrost/panfrost_regs.h    |  5 ++
 include/drm/drm_file.h                      |  5 +-
 include/drm/drm_gem.h                       |  9 ++++
 14 files changed, 195 insertions(+), 21 deletions(-)

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2.42.0