Hi all, This series a respin of a few attempts ([1], [2], [3]) to expose RCS topology to userspace. The motivation for this is to be able to monitor part of the GPU using i915 perf and have detailled knowledge about what execution units are fused off. Let's say you monitor slice 1, knowing how many EUs are actually usuable on that slice is critical to provide normalized numbers (like average busyness of the EUs on slice1) on that particular part of the GPU. Currently numbers returned like I915_PARAM_EU_TOTAL don't give us that information. This series introduces a new uAPI to query information from i915. It's partially inspired by the amdgpu_cs_ioctl, although we don't allow setting values onto the device, only queries. There is a good chance this new uAPI will be reused for exposing available engines (Tvrtko was looking into this). Thanks, [1]: https://patchwork.freedesktop.org/patch/185959/ [2]: https://patchwork.freedesktop.org/series/33436/ [3]: https://patchwork.freedesktop.org/series/33950/ Lionel Landwerlin (6): drm/i915: store all subslice masks drm/i915/debugfs: reuse max slice/subslices already stored in sseu drm/i915/debugfs: add rcs topology entry drm/i915: add rcs topology to error state drm/i915: add query uAPI drm/i915: expose rcs topology through query uAPI drivers/gpu/drm/i915/Makefile | 1 + drivers/gpu/drm/i915/i915_debugfs.c | 87 ++++++++++----- drivers/gpu/drm/i915/i915_drv.c | 3 +- drivers/gpu/drm/i915/i915_drv.h | 26 ++++- drivers/gpu/drm/i915/i915_gpu_error.c | 35 ++++++ drivers/gpu/drm/i915/i915_query.c | 186 +++++++++++++++++++++++++++++++ drivers/gpu/drm/i915/intel_device_info.c | 169 ++++++++++++++++++++-------- drivers/gpu/drm/i915/intel_lrc.c | 2 +- drivers/gpu/drm/i915/intel_query_info.c | 88 +++++++++++++++ drivers/gpu/drm/i915/intel_ringbuffer.h | 2 +- include/uapi/drm/i915_drm.h | 76 +++++++++++++ 11 files changed, 598 insertions(+), 77 deletions(-) create mode 100644 drivers/gpu/drm/i915/i915_query.c create mode 100644 drivers/gpu/drm/i915/intel_query_info.c -- 2.15.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
