Processor and information processing method

Abstract

In a cellular phone 1, a unit processor for executing interruption processing is fixedly set to a unit processor P0. Therefore, for interruption processing, execution of the interruption processing can be immediately started by the unit processor P0. Since the execution of the interruption processing can be rapidly started without performing task switching, the interruption processing can be efficiently performed with high responsiveness. The invention efficiently performs processing with high priority order with high responsiveness in a multiprocessor.

Description

technical field [0001] The present invention relates to a processor for processing multiple tasks or threads in parallel and an information processing method thereof. Background technique [0002] In recent years, in embedded devices, processors called multitask processors or multithread processors (hereinafter, referred to as This is collectively referred to as a multi-processor). [0003] Although processing by a single processor is performed in conventional transfer devices, processing by a single processor becomes difficult as the processing becomes more complicated as transfer devices become more functional. [0004] That is, when a single processor is to be used to realize a high function, it needs to operate at a high clock frequency, and power consumption also increases accordingly. In addition, for example, in a mobile phone, it is difficult to cope with the case where a real time response is required, such as processing that there is a case where a call is receiv...

AI Technical Summary

Problems solved by technology

[0008] However, in the prior art including the technology described in Patent Document 1, the current situation is that an operating system for properly controlling multiprocessors is not constructed; An operating system, which is a tightly coupled multiprocessor that operates as a single multiprocessor by mounting multiple processor cores on a single chip

[0009] Therefore, when performing normal processing, when interrupt processing and other processing that requires high-priority real-time response occurs, if each processor constituting the multiprocessor is not in an empty state, responsiveness to high-priority processing may occur. lowered things

In such a case, there is a problem that it becomes difficult to realize real-time response

[0010] In addition, in order to perform high-priority processing that has occurred, since task switching may occur frequently and increase auxiliary operations (overhead), it may cause reduction in processing efficiency

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