Create a gt/gtN/.defaults/ directory (similar to engine/<engine-name>/.defaults/) to expose default parameter values for each gt in sysfs. This allows userspace to restore default parameter values after they may have changed. Patch 1: Creates the gt/gtN/.defaults/ directory Patch 2: Adds per-gt RPS defaults (rps_max_freq_mhz and rps_min_freq_mhz) to gt/gtN/.defaults/ An approved Level-0/oneAPI UMD pull request which consumes the exposed defaults can be seen here: https://github.com/intel/compute-runtime/pull/552 The UMD pull request will be merged if/after this series is merged to i915. Previous discussion on these patches can be seen here: https://patchwork.freedesktop.org/patch/484238/?series=102665&rev=4 https://patchwork.freedesktop.org/patch/483988/?series=102665&rev=3 Cc: Matt Roper <matthew.d.roper@xxxxxxxxx> Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxxxxxxx> Cc: Andi Shyti <andi.shyti@xxxxxxxxxxxxxxx> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@xxxxxxxxx> Ashutosh Dixit (2): drm/i915/gt: Create gt/gtN/.defaults/ for per gt sysfs defaults drm/i915/gt: Expose per-gt RPS defaults in sysfs drivers/gpu/drm/i915/gt/intel_gt_sysfs.c | 10 +++--- drivers/gpu/drm/i915/gt/intel_gt_sysfs.h | 6 ++++ drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.c | 34 +++++++++++++++++++++ drivers/gpu/drm/i915/gt/intel_gt_types.h | 9 ++++++ drivers/gpu/drm/i915/gt/intel_rps.c | 2 ++ drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c | 12 +++++--- 6 files changed, 64 insertions(+), 9 deletions(-) -- 2.34.1
