[PATCH v4 0/8] Engine busyness

[Riana Tauro]

GuC provides engine busyness ticks as a 64 bit counter which count
as clock ticks. These counters are maintained in a
shared memory buffer and internally updated on a continuous basis.

GuC also provides a periodically total active ticks that GT has been
active for (GuC loaded and running). 
This counter is exposed to the user such that busyness can
be calculated as a percentage using

busyness % = (engine active ticks/total active ticks) * 100.

This can be listed as

sudo ./perf list
     xe_0000_03_00.0/total-active-ticks-gt0/            [Kernel PMU event]
     xe_0000_03_00.0/bcs0-busy-ticks-gt0/               [Kernel PMU event]
     xe_0000_03_00.0/ccs0-busy-ticks-gt0/               [Kernel PMU event]
     xe_0000_03_00.0/rcs0-busy-ticks-gt0/               [Kernel PMU event]
     xe_0000_03_00.0/vcs0-busy-ticks-gt0/               [Kernel PMU event]
     xe_0000_03_00.0/vecs0-busy-ticks-gt0/              [Kernel PMU event]

and can be read as

        sudo ./perf stat -e xe_0000_03_00.0/bcs0-busy-ticks-gt0/,xe_0000_03_00.0/total-active-ticks-gt0/  -I 1000

v2: rebase
    fix review comments

v3: rebase
    add dropping of group busyness changes
    add pmu base implementation

v4: rebase
    fix review comments

Aravind Iddamsetty (1):
  drm/xe/pmu: Enable PMU interface and add engine busyness counter

Riana Tauro (7):
  drm/xe: Move user engine class mappings to functions
  drm/xe/guc: Add interface for engine busyness ticks
  drm/xe/uapi: Add configs for Engine busyness
  drm/xe/guc: Add PMU counter for total active ticks
  drm/xe/guc: Expose engine busyness only for supported GuC version
  drm/xe/guc: Dynamically enable/disable engine busyness stats
  drm/xe/guc: Handle runtime suspend issues for engine busyness

 drivers/gpu/drm/xe/Makefile                 |   3 +
 drivers/gpu/drm/xe/abi/guc_actions_abi.h    |   1 +
 drivers/gpu/drm/xe/xe_device.c              |   2 +
 drivers/gpu/drm/xe/xe_device_types.h        |   4 +
 drivers/gpu/drm/xe/xe_exec_queue.c          |  19 +-
 drivers/gpu/drm/xe/xe_gt.c                  |  39 ++
 drivers/gpu/drm/xe/xe_gt.h                  |   3 +
 drivers/gpu/drm/xe/xe_guc.c                 |   7 +
 drivers/gpu/drm/xe/xe_guc_engine_busyness.c | 371 +++++++++++
 drivers/gpu/drm/xe/xe_guc_engine_busyness.h |  22 +
 drivers/gpu/drm/xe/xe_guc_fwif.h            |  15 +
 drivers/gpu/drm/xe/xe_guc_types.h           |  25 +
 drivers/gpu/drm/xe/xe_hw_engine.c           |  51 ++
 drivers/gpu/drm/xe/xe_hw_engine.h           |   3 +
 drivers/gpu/drm/xe/xe_module.c              |   5 +
 drivers/gpu/drm/xe/xe_pmu.c                 | 655 ++++++++++++++++++++
 drivers/gpu/drm/xe/xe_pmu.h                 |  27 +
 drivers/gpu/drm/xe/xe_pmu_types.h           |  49 ++
 drivers/gpu/drm/xe/xe_query.c               |  23 +-
 include/uapi/drm/xe_drm.h                   |  60 ++
 20 files changed, 1346 insertions(+), 38 deletions(-)
 create mode 100644 drivers/gpu/drm/xe/xe_guc_engine_busyness.c
 create mode 100644 drivers/gpu/drm/xe/xe_guc_engine_busyness.h
 create mode 100644 drivers/gpu/drm/xe/xe_pmu.c
 create mode 100644 drivers/gpu/drm/xe/xe_pmu.h
 create mode 100644 drivers/gpu/drm/xe/xe_pmu_types.h

-- 
2.40.0