Method And Apparatus To Allow Adjustment Of The Core Availability Mask Provided To System Software

Abstract: Embodiments herein relate to selecting cores in a processor using a core mask. In one aspect, a computing device includes different types of cores arranged in one or more processors. The core types are different in terms of performance and power consumption. A core mask is provided which indicates the number of cores which are selected to be active for each core type. A driver can receive a gear setting, which represents a first preference for higher performance or reduced power consumption. A slider value, which represents a second preference for higher performance or reduced power consumption, is provided based on the gear setting and a core utilization percentage and/or foreground activity percentage. A core mask is selected based on the slider value and the current workload type. The first preference can guide, without dictating, a decision of which cores are selected.

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