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authorTvrtko Ursulin <tvrtko.ursulin@intel.com>2022-04-01 15:22:05 +0100
committerTvrtko Ursulin <tvrtko.ursulin@intel.com>2022-04-05 08:40:57 +0100
commit055634e4b62f109a47727c2c50586e2e318595a9 (patch)
treee251fc4ed31102d7d60d8f7e3cb999a7908ec28d /Documentation/gpu/i915.rst
parentdrm/i915: Count engine instances per uabi class (diff)
downloadlinux-dev-055634e4b62f109a47727c2c50586e2e318595a9.tar.xz
linux-dev-055634e4b62f109a47727c2c50586e2e318595a9.zip
drm/i915: Expose client engine utilisation via fdinfo
Similar to AMD commit 874442541133 ("drm/amdgpu: Add show_fdinfo() interface"), using the infrastructure added in previous patches, we add basic client info and GPU engine utilisation for i915. Example of the output: pos: 0 flags: 0100002 mnt_id: 21 drm-driver: i915 drm-pdev: 0000:00:02.0 drm-client-id: 7 drm-engine-render: 9288864723 ns drm-engine-copy: 2035071108 ns drm-engine-video: 0 ns drm-engine-video-enhance: 0 ns v2: * Update for removal of name and pid. v3: * Use drm_driver.name. v4: * Added drm-engine-capacity- tag. * Fix typo. (Umesh) v5: * Don't output engine data before Gen8. Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: David M Nieto <David.Nieto@amd.com> Cc: Christian König <christian.koenig@amd.com> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Chris Healy <cphealy@gmail.com> Acked-by: Christian König <christian.koenig@amd.com> Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com> Acked-by: Rob Clark <robdclark@gmail.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20220401142205.3123159-9-tvrtko.ursulin@linux.intel.com
Diffstat (limited to 'Documentation/gpu/i915.rst')
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diff --git a/Documentation/gpu/i915.rst b/Documentation/gpu/i915.rst
index bcaefc952764..cfc64f5795a4 100644
--- a/Documentation/gpu/i915.rst
+++ b/Documentation/gpu/i915.rst
@@ -709,3 +709,31 @@ The style guide for ``i915_reg.h``.
.. kernel-doc:: drivers/gpu/drm/i915/i915_reg.h
:doc: The i915 register macro definition style guide
+
+.. _i915-usage-stats:
+
+i915 DRM client usage stats implementation
+==========================================
+
+The drm/i915 driver implements the DRM client usage stats specification as
+documented in :ref:`drm-client-usage-stats`.
+
+Example of the output showing the implemented key value pairs and entirety of
+the currently possible format options:
+
+::
+
+ pos: 0
+ flags: 0100002
+ mnt_id: 21
+ drm-driver: i915
+ drm-pdev: 0000:00:02.0
+ drm-client-id: 7
+ drm-engine-render: 9288864723 ns
+ drm-engine-copy: 2035071108 ns
+ drm-engine-video: 0 ns
+ drm-engine-capacity-video: 2
+ drm-engine-video-enhance: 0 ns
+
+Possible `drm-engine-` key names are: `render`, `copy`, `video` and
+`video-enhance`.