System, apparatus and method for controlling a processor based on effective stress information

A machine-readable medium having stored thereon instructions, which if performed by a machine cause the machine to perform a method comprising:

• receiving a voltage and a temperature of a system on chip (SoC) in a controller of the SoC;
• calculating an effective stress of the SoC based at least in part on the voltage and the temperature;
• accumulating the calculated effective stress with a stored effective stress corresponding to a history of the effective stress of the SoC over an elapsed lifetime duration of the SoC to obtain an accumulated effective stress of the SoC;
• receiving a real-time clock value in the controller and calculating the elapsed lifetime duration of the processor based at least in part thereon, wherein the elapsed lifetime duration is a sum of a total active time of the SoC and a total inactive time of the SoC, the total inactive time comprising time in which the SoC is in a power-off state;
• obtaining a stress model value from a stress model based at least in part on the elapsed lifetime duration;
• comparing the accumulated effective stress to the stress model value;
• and
• enabling the SoC to operate at a first turbo mode frequency if the accumulated effective stress is less than the stress model value, and enabling the SoC to operate at a second turbo mode frequency less than the first turbo mode frequency if the accumulated effective stress exceeds the stress model value.

A system comprising:

• a system on chip (SoC) including:
• a plurality of cores to execute instructions;
• a stress detection circuit coupled to the plurality of cores to receive at least one of a voltage and a temperature of the SoC, calculate an effective stress based at least in part on the at least one of the voltage and the temperature, and accumulate the effective stress with a stored effective stress to obtain an accumulated effective stress;
• a clock calculation circuit to calculate an elapsed lifetime duration of the system, wherein the elapsed lifetime duration is a sum of a total active time of the system and a total inactive time of the system, the total inactive time comprising time in which the system is in a power-off state;
• a control circuit to determine a stress model value from a stress model based at least in part on the elapsed lifetime duration, and to compare the accumulated effective stress to the determined stress model value;
• and
• a power controller to enable the SoC to operate at a first turbo mode frequency in response to a turbo mode request when the accumulated effective stress is less than the stress model value and enable the SoC to operate at a second turbo mode frequency in response to the turbo mode request when the accumulated effective stress exceeds the stress model value, the second turbo mode frequency lower than the first turbo mode frequency;
• a plurality of sensors coupled to SoC to provide environmental information and image information to the SoC, wherein at least one of the plurality of cores is to determine an action to taken by an actuator based at least in part on one or more of the environmental information and the image information;
• and
• a communication circuit to provide control information regarding the action to the actuator.