From: Tvrtko Ursulin <[email protected]>
Continuation of the old feature work, rebased to latest drm-tip and adapted to
expose data per engine class - making it compatible with the upcoming Virtual
Engine uapi.
Patch series adds core per context (intel_context) engine busyness tracking and
then also exports this data in sysfs, aggregated to per client and per engine
class.
Exported directory structure looks like this:
root@sc:/sys/class/drm/card0# grep . -r clients/
clients/21/busy/3:0
clients/21/busy/1:0
clients/21/busy/2:24712242825
clients/21/busy/0:7830006484
clients/21/pid:5989
clients/21/name:gem_wsim
clients/22/busy/3:0
clients/22/busy/1:2778102816
clients/22/busy/2:0
clients/22/busy/0:14434594580
clients/22/pid:5991
clients/22/name:gem_wsim
clients/enable_stats:1
Each client has an opaque unique id named directory, under which are its name,
pid, and another subdirectory containing accumulated engine busyness per engine
class in nanoseconds.
Example output from extended intel_gpu_top:
==========================================================================
intel-gpu-top - 935/ 935 MHz; 0% RC6; 14.73 Watts; 1097 irqs/s
IMC reads: 1401 MiB/s
IMC writes: 4 MiB/s
ENGINE BUSY MI_SEMA MI_WAIT
Render/3D/0 63.73% |███████████████████ | 3% 0%
Blitter/0 9.53% |██▊ | 6% 0%
Video/0 39.32% |███████████▊ | 16% 0%
Video/1 15.62% |████▋ | 0% 0%
VideoEnhance/0 0.00% | | 0% 0%
PID NAME RCS BCS VCS VECS
4084 gem_wsim |█████▌ ||█ || || |
4086 gem_wsim |█▌ || ||███ || |
==========================================================================
Tvrtko Ursulin (6):
drm/i915: Move intel_engine_context_in/out into intel_lrc.c
drm/i915: Track per-context engine busyness
drm/i915: Expose list of clients in sysfs
drm/i915: Update client name on context create
drm/i915: Expose per-engine client busyness
drm/i915: Add sysfs toggle to enable per-client engine stats
drivers/gpu/drm/i915/gt/intel_context.c | 21 ++
drivers/gpu/drm/i915/gt/intel_context.h | 9 +
drivers/gpu/drm/i915/gt/intel_context_types.h | 9 +
drivers/gpu/drm/i915/gt/intel_engine.h | 55 -----
drivers/gpu/drm/i915/gt/intel_engine_cs.c | 8 +
drivers/gpu/drm/i915/gt/intel_lrc.c | 107 ++++++++-
drivers/gpu/drm/i915/i915_drv.h | 39 ++++
drivers/gpu/drm/i915/i915_gem.c | 215 +++++++++++++++++-
drivers/gpu/drm/i915/i915_gem_context.c | 18 +-
drivers/gpu/drm/i915/i915_sysfs.c | 81 +++++++
10 files changed, 492 insertions(+), 70 deletions(-)
--
2.19.1
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