Systems and methods for power state transitioning in an information handling system

摘要

Systems and methods for power state transitioning in an information handling system having a volatile memory and a nonvolatile memory are disclosed. Dirty data in the volatile memory may be identified. The dirty data may include data that has not been stored in the nonvolatile memory. Dirty data may be written from the volatile memory to the nonvolatile memory. Transitioning to a reduced power state may be in response to a trigger event. Transitioning from the reduced power state may be in response to a wake signal. Data may be copied from the nonvolatile memory to the volatile memory. An operating system may be waked to a restored state.

主权项

1. A method for power state transitioning in an information handling system having a volatile memory and a nonvolatile memory, the method comprising:
identifying dirty data in the volatile memory, wherein the dirty data comprises data that has not been stored in the nonvolatile memory, wherein identifying dirty data comprises checking a flag within the volatile memory during process idle periods; writing dirty data from the volatile memory to the nonvolatile memory, wherein writing dirty data is at least partially performed on an opportunistic basis, based, at least in part, on a usage level of a component within the information handling system; transitioning to a reduced power state in response to a trigger event; transitioning from the reduced power state in response to a wake signal; copying data from the nonvolatile memory to the volatile memory; updating a record to reflect that a current instance of the dirty data has been stored; recording an alternate copy of the flag for standard operating system usage of the flag; resetting the flag; and waking an operating system to a restored state.