Waitboost is a legacy feature implemented in the Host Turbo algorithm. This patch set implements it for the SLPC path. A "boost" happens when user calls gem_wait ioctl on a submission that has not landed on HW yet. GT frequency gets temporarily bumped to RP0 to allow the previous request to finish quickly. We achieve this on SLPC by setting the min frequency, SLPC will set that as the requested frequency.
Like before, boost frequency is configurable through sysfs, so we can adjust it to any specific value as long as it is between [min, RP0].
Signed-off-by: Vinay Belgaumkar vinay.belgaumkar@intel.com
Vinay Belgaumkar (3): drm/i915/guc/slpc: Define and initialize boost frequency drm/i915/guc/slpc: Add waitboost functionality for SLPC drm/i915/guc/slpc: Update boost sysfs hooks for SLPC
drivers/gpu/drm/i915/gt/intel_rps.c | 57 +++++++++++++++++++ drivers/gpu/drm/i915/gt/intel_rps.h | 3 + drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c | 56 ++++++++++++++++++ drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h | 3 + .../gpu/drm/i915/gt/uc/intel_guc_slpc_types.h | 3 + drivers/gpu/drm/i915/i915_request.c | 2 +- drivers/gpu/drm/i915/i915_sysfs.c | 21 ++----- 7 files changed, 127 insertions(+), 18 deletions(-)