On Mon, 01 Nov 2021 18:26:05 -0700, Vinay Belgaumkar wrote:
Waitboost is a legacy feature implemented in the Host Turbo algorithm. This patch set implements it for the SLPC path. A boost can happen when a request is waiting for an unmet dependency. GT frequency gets temporarily bumped to boost freq 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.
The boost will occur through a worker thread that will be scheduled when the required conditions are met.
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].
v2: Add a worker thread to perform freq boost. v3: Address comments (Ashutosh)
For the series:
Reviewed-by: Ashutosh Dixit ashutosh.dixit@intel.com
Cc: Ashutosh Dixit ashutosh.dixit@intel.com 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 | 72 +++++++++ drivers/gpu/drm/i915/gt/intel_rps.h | 3 + drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.c | 151 +++++++++++++++--- drivers/gpu/drm/i915/gt/uc/intel_guc_slpc.h | 3 + .../gpu/drm/i915/gt/uc/intel_guc_slpc_types.h | 13 ++ drivers/gpu/drm/i915/i915_request.c | 2 +- drivers/gpu/drm/i915/i915_sysfs.c | 19 +-- 7 files changed, 223 insertions(+), 40 deletions(-)
-- 2.25.0