[Intel-gfx] [PATCH 0/8] Per client GPU utilisation

[Tvrtko Ursulin]

From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>

Rebase with a few small tweaks of the same old work.

Main highlight is that I have now posted a vendor agnostic IGT/tools/gputop as
well (https://patchwork.freedesktop.org/series/100571/).

Now mostly reviewed and waiting for some r-b updates and a confirmation the
vendor agnostic bit can truly live up to that goal.

Example of the intel_gpu_top output:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
intel-gpu-top: Intel Tigerlake (Gen12) @ /dev/dri/card0 -  220/ 221 MHz
    70% RC6;  0.62/ 7.08 W;      760 irqs/s

         ENGINES     BUSY                                 MI_SEMA MI_WAIT
       Render/3D   23.06% |██████▊                      |      0%      0%
         Blitter    0.00% |                             |      0%      0%
           Video    5.40% |█▋                           |      0%      0%
    VideoEnhance   20.67% |██████                       |      0%      0%

   PID              NAME  Render/3D    Blitter      Video    VideoEnhance
  3082               mpv |          ||          ||▌         ||██        |
  3117         neverball |█▉        ||          ||          ||          |
     1           systemd |▍         ||          ||          ||          |
  2338       gnome-shell |          ||          ||          ||          |
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Example of the gputop output:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
DRM minor 0
    PID               NAME    render       copy       video
    3816          kwin_x11 |███▎      ||          ||          ||          |
    3523              Xorg |▊         ||          ||          ||          |
 1120449               mpv |          ||          ||▋         ||          |
 1120529          glxgears |▋         ||          ||          ||          |
 1120449               mpv |▍         ||          ||          ||          |
    3860       plasmashell |▏         ||          ||          ||          |
    4764           krunner |          ||          ||          ||          |
  575206            chrome |          ||          ||          ||          |
  833481           firefox |          ||          ||          ||          |
  892924       thunderbird |          ||          ||          ||          |
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

v2:
 * Added prototype of possible amdgpu changes and spec updates to align with the
   common spec.

v3:
 * Documented that 'drm-driver' tag shall correspond with
   struct drm_driver.name.

v4:
 * Dropped amdgpu conversion from the series for now until AMD folks can find
   some time to finish that patch.

v5:
 * Added drm-engine-capacity-* tag.
 * Couple small tweaks.

Test-with: 20220222135605.1120767-1-tvrtko.ursulin at linux.intel.com

Tvrtko Ursulin (8):
  drm/i915: Explicitly track DRM clients
  drm/i915: Make GEM contexts track DRM clients
  drm/i915: Track runtime spent in closed and unreachable GEM contexts
  drm/i915: Track all user contexts per client
  drm/i915: Track context current active time
  drm: Document fdinfo format specification
  drm/i915: Count engine instances per uabi class
  drm/i915: Expose client engine utilisation via fdinfo

 Documentation/gpu/drm-usage-stats.rst         | 112 +++++++++++++
 Documentation/gpu/i915.rst                    |  28 ++++
 Documentation/gpu/index.rst                   |   1 +
 drivers/gpu/drm/i915/Makefile                 |   1 +
 drivers/gpu/drm/i915/gem/i915_gem_context.c   |  42 ++++-
 .../gpu/drm/i915/gem/i915_gem_context_types.h |   6 +
 drivers/gpu/drm/i915/gt/intel_context.c       |  27 +++-
 drivers/gpu/drm/i915/gt/intel_context.h       |  15 +-
 drivers/gpu/drm/i915/gt/intel_context_types.h |  24 ++-
 drivers/gpu/drm/i915/gt/intel_engine_user.c   |  11 +-
 .../drm/i915/gt/intel_execlists_submission.c  |  23 ++-
 .../gpu/drm/i915/gt/intel_gt_clock_utils.c    |   4 +
 drivers/gpu/drm/i915/gt/intel_lrc.c           |  27 ++--
 drivers/gpu/drm/i915/gt/intel_lrc.h           |  27 +++-
 drivers/gpu/drm/i915/gt/selftest_lrc.c        |  10 +-
 drivers/gpu/drm/i915/i915_driver.c            |   9 ++
 drivers/gpu/drm/i915/i915_drm_client.c        | 151 ++++++++++++++++++
 drivers/gpu/drm/i915/i915_drm_client.h        |  68 ++++++++
 drivers/gpu/drm/i915/i915_drv.h               |   4 +
 drivers/gpu/drm/i915/i915_file_private.h      |   3 +
 drivers/gpu/drm/i915/i915_gem.c               |  21 ++-
 drivers/gpu/drm/i915/i915_gpu_error.c         |   9 +-
 drivers/gpu/drm/i915/i915_gpu_error.h         |   2 +-
 23 files changed, 565 insertions(+), 60 deletions(-)
 create mode 100644 Documentation/gpu/drm-usage-stats.rst
 create mode 100644 drivers/gpu/drm/i915/i915_drm_client.c
 create mode 100644 drivers/gpu/drm/i915/i915_drm_client.h

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2.32.0