Enhanced power management for support of priority system events

• US 10,156,877 B2
• Filed: 10/01/2016
• Issued: 12/18/2018
• Est. Priority Date: 10/01/2016
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Abozaed, Muhammad, Gorbatov, Eugene, Khanna, Gaurav, Ananthakrishnan, Avinash N.
• Primary Examiner(s): WANG, ALBERT C
• Application Number:
  US15/283,349
• Publication Number:
  US 20180095509A1
• Time in Patent Office: 808 Days
• CPC Class Codes: G06F 1/206 comprising thermal management
• CPC Class Codes: G06F 1/3206 Monitoring of events, devices or parameters that trigger a change in power modality
• CPC Class Codes: G06F 9/4843 by program, e.g. task dispatcher, supervisor, operating system
• CPC Class Codes: G06F 9/4893 taking into account power or heat criteria power management in computers in general G06F1/3203; thermal management in computers in general G06F1/206
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

Embodiments are generally directed to enhanced power management for support of priority system events. An embodiment of a system includes a processing element; a memory including a registry for information regarding one or more system events that are designated as priority events; a mechanism to track operation of events that requires Turbo mode operation for execution; and a power control unit to implement a power management algorithm. The system is to maintain an first energy budget and a second residual energy budget for operation in a Turbo power mode, and wherein the power management algorithm is to determine whether to authorize execution of a detected system event in the Turbo power mode based on the second residual energy budget upon determining that the first energy budget is not sufficient for execution of the detected system event and that the detected system event is designated as a priority event. Priority designations for the priority events may include a first High Priority designation and a second Critical designation.

Claims

1. A system comprising:

a processing element;

a memory including a registry for information regarding one or more system events that are designated as priority events;

a mechanism to track operation of events that requires Turbo mode operation for execution; and

a power control unit to implement a power management algorithm;

wherein the system is to maintain a first energy budget and a second residual energy budget for operation in a Turbo power mode;

wherein the power management algorithm is to determine whether to authorize execution of a detected system event in the Turbo power mode based on the second residual energy budget upon determining that the first energy budget is not sufficient for execution of the detected system event and that the detected system event is designated as a priority event.

2. The system of claim 1, wherein the power management algorithm is further to determine whether to authorize the detected system event to exceed a thermal limit for a certain period upon determining that the second residual energy budget is not sufficient for execution of the detected system event and the detected system event is designated as a priority event.

3. The system of claim 2, wherein the thermal limit is a soft thermal limit that is not essential for system operation.

4. The system of claim 2, wherein priority designations for the priority events include a first High Priority designation and a second Critical designation, wherein determining whether to authorize the detected system event to exceed the thermal limit includes determining that the detected system event is designated as a Critical event.

5. The system of claim 4, wherein one or more events designated as Critical events include launching an application, responding to a user interface event, and responding to a touch input to the system.

6. The system of claim 1, wherein the registry includes one or more parameters for a priority designation of each event stored in the registry.

7. The system of claim 6, wherein the registry further includes information regarding an estimate of an execution length for each event stored in the registry.

8. The system of claim 1, wherein the first energy budget and second residual energy budget are replenished when the system is in a reduced operation state, the second residual energy budget being replenished before the first energy budget.

9. The system of claim 1, wherein the system is a system on chip (SoC).

10. A non-transitory computer-readable storage medium having stored thereon data representing sequences of instructions that, when executed by a processor, cause the processor to perform operations comprising:

storing information in a registry regarding one or more events for a system that are designated as priority events;

maintaining a first energy budget and a second residual energy budget for the system;

detecting a system event that requires a Turbo mode operation; and

determining whether to authorize execution of the detected system event based on a power management algorithm, the algorithm including;

determining whether the first energy budget is sufficient for execution of the detected system event,

upon determining that the first energy budget is not sufficient for execution of the detected system event, further determining whether the detected system event is a priority event, and

upon determining that the detected system event is designated as a priority event, determining if the second residual energy budget is sufficient for execution of the detected system event.

11. The medium of claim 10, further comprising instructions that, when executed by the processor, cause the processor to perform operations comprising:

upon determining that the second residual energy budget is not sufficient for execution of the detected system event, determining whether the detected system event is designated as a critical event; and

upon determining that the detected system event is designated as a critical event, authorizing the detected system event to exceed a thermal limit for a certain period.

12. The medium of claim 11, wherein the thermal limit is a soft thermal limit that is not essential for system operation.

13. The medium of claim 10, further comprising instructions that, when executed by the processor, cause the processor to perform operations comprising:

receiving designations of priority events from one or more of;

a system application;

an operating system;

or

a registration of an event with the system.

14. The medium of claim 10, wherein storing information in the registry includes storing one or more parameters for a priority designation of each event stored in the registry.

15. The medium of claim 14, wherein storing information in the registry further includes storing an estimate of an execution length for each event stored in the registry.

16. The medium of claim 10, further comprising instructions that, when executed by the processor, cause the processor to perform operations comprising:

replenishing the first energy budget and second residual energy budget when the system is in a reduced operation state, the second residual energy budget being replenished before the first energy budget.

17. A mobile device comprising:

a system on chip (SoC), the SoC including;

a processing element,

a memory including a registry for information regarding one or more SoC events that are designated as priority events,

a mechanism to track operation of events that requires Turbo mode operation for execution,

a transmitter or receiver and antenna, and

a power control unit to implement a power management algorithm;

a touch display; and

a power source for the mobile device;

wherein the SoC is to maintain a first energy budget and a second residual energy budget for operation in a Turbo power mode;

wherein the power management algorithm is to determine whether to authorize execution of a detected SoC event in the Turbo power mode based on the second residual energy budget upon determining that the first energy budget is not sufficient for execution of the detected SoC event and that the detected SoC event is designated as a priority event.

18. The mobile device of claim 17, wherein the power management algorithm is further to determine whether to authorize the detected SoC event to exceed a thermal limit for a certain period upon determining that the second residual energy budget is not sufficient for execution of the detected SoC event and the detected SoC event is designated as a priority event.

19. The mobile device of claim 18, wherein the thermal limit is a soft thermal limit that is not essential for SoC operation.

20. The mobile device of claim 18, wherein priority designations for the priority events include a first High Priority designation and a second Critical designation, wherein determining whether to authorize the detected system event to exceed a thermal limit includes determining that the detected system event is designated as a Critical event.