Invention Grant
- Patent Title: System, apparatus and method for providing hardware state feedback to an operating system in a heterogeneous processor
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Application No.: US16554940Application Date: 2019-08-29
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Publication No.: US11698812B2Publication Date: 2023-07-11
- Inventor: Praveen Kumar Gupta , Avinash N. Ananthakrishnan , Eugene Gorbatov , Stephen H. Gunther
- Applicant: Intel Corporation
- Applicant Address: US CA Santa Clara
- Assignee: Intel Corporation
- Current Assignee: Intel Corporation
- Current Assignee Address: US CA Santa Clara
- Agency: Trop, Pruner & Hu, P.C.
- Main IPC: G06F9/48
- IPC: G06F9/48 ; G06F9/32 ; G06F1/10 ; G06F1/08 ; G06F1/3296 ; G06F1/324

Abstract:
In one embodiment, a processor includes a power controller having a resource allocation circuit. The resource allocation circuit may: receive a power budget for a first core and at least one second core and scale the power budget based at least in part on at least one energy performance preference value to determine a scaled power budget; determine a first maximum operating point for the first core and a second maximum operating point for the at least one second core based at least in part on the scaled power budget; determine a first efficiency value for the first core based at least in part on the first maximum operating point for the first core and a second efficiency value for the at least one second core based at least in part on the second maximum operating point for the at least one second core; and report a hardware state change to an operating system scheduler based on the first efficiency value and the second efficiency value. Other embodiments are described and claimed.
Public/Granted literature
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