Apparatus, System, and Method for Power Management Utilizing Multiple Processor Types

• US 20100146317A1
• Filed: 12/08/2008
• Published: 06/10/2010
• Est. Priority Date: 12/08/2008
• Status: Active Grant

• Current Assignee: Lenovo PC International Limited (Lenovo Group Ltd.)
• Original Assignee: Lenovo Singapore Pte Limited (Lenovo Group Ltd.)
• Inventors: Locker, Howard, Springfield, Randall Scott, Cromer, Daryl, Challener, David Carroll
• Granted Patent: US 8,214,675 B2
• Time in Patent Office: Days
• US Class Current: 713/323
• CPC Class Codes: G06F 1/263 Arrangements for using multiple switchable power supplies, e.g. battery and AC G06F1/30 takes precedence
• CPC Class Codes: G06F 1/3203 Power management, i.e. event-based initiation of a power-saving mode
• CPC Class Codes: G06F 1/3293 by switching to a less power-consuming processor, e.g. sub-CPU
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management
• CPC Class Codes: Y02D 30/50 in wire-line communication networks, e.g. low power modes or reduced link rate

Abstract

An apparatus, system, and method are disclosed for computer system power management. A control module 602 is activated on a computer 200 in response to an event and enters 818 a standby state if the computer 200 is not already 814 in the standby state. A policy module 604 detects 904 a power source of a predetermined type connected to the computer 200 and dictates 908 one or more processors 302 of higher power consumption for a more abundant type of power source such as an AC adapter 314, or one or more processors 304 of lower power consumption for a less abundant type of power source such as a battery 318. A configuration module 606, activated by the control module 602, switches 1004 the computer 200 to one or more processors 302 and 304 of a predetermined power consumption as dictated and exits 1016 the standby state.

Claims

1. An apparatus comprising:

a control module activated on a computer in response to an event and responsive to that event, entering a standby state if the computer is not already in the standby state;

a policy module that detects a power source of a predetermined type connected to the computer and comprises a power policy for the power source; and

a configuration module activated by the control module, the configuration module switching to one or more processors of a predetermined power consumption as dictated by the power policy and exits the standby state.

2. The apparatus of claim 1, wherein the event is selected from the set consisting of a change of the power source, a timing condition, an operating system condition, a firmware condition, an SMI, and a user action.

3. The apparatus of claim 1, wherein the power policy may be overridden by a user.

4. The apparatus of claim 1, wherein the control module comprises a background application.

5. The apparatus of claim 1, wherein the policy module comprises operating system power options properties.

6. The apparatus of claim 1, wherein the configuration module comprises table-driven firmware.

7. A system comprising:

a computer having two or more processors of differing power consumption;

a control module activated on the computer in response to an event and responsive to that event, entering a standby state if the computer is not already in the standby state;

a policy module that detects a power source of a predetermined type connected to the computer, the policy module comprising a power policy for the power source wherein the power policy dictates one or more processors of higher power consumption for a more abundant type of power source and dictates one or more processors of lower power consumption for a less abundant type of power source; and

a configuration module activated by the control module, the configuration module switching to one or more processors of a predetermined power consumption as dictated by the power policy and exiting the standby state.

8. The system of claim 7, wherein the more abundant type of power source comprises an AC adapter and the less abundant type of power source comprises a battery.

9. The system of claim 7, wherein the power policy may be overridden by a user.

10. The system of claim 7, wherein the computer comprises a notebook.

11. The system of claim 10, wherein the event comprises closing and opening the lid of the notebook.

12. The system of claim 7, wherein the two or more processors of differing power consumption achieve binary compatibility through emulation where necessary.

13. A computer program product comprising a computer readable medium having computer usable program code executable to perform operations, the operations of the computer program product comprising:

checking for an event and proceeding with the operations on a computer in response to the event;

entering a standby state if the computer is not already in the standby state;

detecting a power source of a predetermined type connected to the computer;

switching to one or more processors of a predetermined power consumption as dictated by a power policy for the power source; and

exiting the standby state.

14. The computer program product of claim 13, wherein the event is selected from the set consisting of a change of the power source, a timing condition, an operating system condition, a firmware condition, an SMI, and a user action.

15. The computer program product of claim 13, wherein the power policy dictates one or more processors of higher power consumption for a more abundant type of power source and dictates one or more processors of lower power consumption for a less abundant type of power source.

16. The computer program product of claim 15, wherein the more abundant type of power source comprises an AC adapter and the less abundant type of power source comprises a battery.

17. The computer program product of claim 13, wherein the power policy may be overridden by a user.

18. A machine-implemented method comprising the steps of:

detecting a power source of a predetermined type connected to a computer; and

switching to one or more processors of a predetermined power consumption as dictated by a power policy for the power source.

19. The method of claim 18, further comprising the steps of:

entering a standby state if the computer is not already in the standby state; and

exiting the standby state.

20. The method of claim 18, wherein the method is activated in response to an event.

21. The method of claim 20, wherein the event is selected from the set consisting of a change of the power source, a timing condition, an operating system condition, a firmware condition, an SMI, and a user action.

22. The method of claim 18, wherein the power policy dictates one or more processors of higher power consumption for a more abundant type of power source and dictates one or more processors of lower power consumption for a less abundant type of power source.

23. The method of claim 22, wherein the more abundant type of power source comprises an AC adapter and the less abundant type of power source comprises a battery.

24. The method of claim 18, wherein the power policy may be overridden by a user.