System and method for managing safe downtime of shared resources within PCD

Abstract

A method and system for managing safe downtime of shared resources within a portable computing device are described. The method may include determining a tolerance for a downtime period for an unacceptable deadline miss element of the portable computing device. Next, the determined tolerance for the downtime period may be transmitted to quality-of-service (QoS) controller. The QoS controller may determine if the tolerance for the downtime period needs to be adjusted. The QoS controller may receive a downtime request from one or more shared resources of the portable computing device. The QoS controller may determine if the downtime request needs to be adjusted. Next, the QoS controller may select a downtime request for execution and then identify which one or more unacceptable deadline miss elements of the portable computing device that are impacted by the selected downtime request.

Description

[0001] Statement of Priority and Related Applications [0002] This application claims priority under 35 U.S.C. 119(e) to U.S. Provisional Application No. 62 / 073,606, filed October 31, 2014, entitled "SYSTEM ANDMETHOD FOR MANAGING SAFE DOWNTIME OF SHARED RESOURCES WITHIN A PCD." The content of this application is incorporated herein by reference. Background technique [0003] Portable computing devices ("PCDs") are powerful devices that are becoming a personal and professional necessity. Examples of PCDs may include cellular telephones, portable digital assistants ("PDAs"), portable game consoles, palmtop computers, and other portable electronic devices. [0004] PCDs typically employ a system on a chip ("SOC"). Each SOC may contain multiple processing cores with deadlines which, if missed, may cause unacceptable detectable / visible failures during operation of the PCD. Deadlines for hardware elements such as cores are typically driven by the amount of bandwidth (“BW”) that ...

AI Technical Summary

Problems solved by technology

[0008] Another example of a potential failure is a modem core not being able to read / write enough data from / to DRAM within a fixed period of time to complete a critical task

Modem firmware may crash if critical tasks are not met: loss of voice or data calls to PCD for a period of time, or internet connection may be stuttered (i.e. intermittent during internet connection)

Images