The application discloses a cold
backup control method and controller of a
processing core and an
integrated circuit, relates to the technical field of processors, and comprises the following steps: in a current
evaluation period, the cold
backup controller can collect running state information of a target
processing core corresponding to the cold
backup controller, and adopts a preset
scoring rule to evaluate the running state information, so that a target
score of the target
processing core in the current
evaluation period is obtained. In a continuous preset number of periods, when the scores of the target
processing core are all within a preset
score threshold range, an interruption flag of the target
processing core is read from an interruption controller, a task allocation flag of the target
processing core is read from a task scheduler, and then whether the target processing core meets a cold backup condition is determined according to the interruption flag and the task allocation flag; if yes, a cold backup switching operation is performed on the target processing core. In this way, the response is timely, and the cold backup controller is only responsible for the processing core corresponding to the cold backup controller, so that the control
granularity is relatively fine.