PCB in linux pid.t pid; /*process identifier * ong state; / state of the process * unsigned int time slice /* scheduling information * struct task struct *parent; / this process's parent * struct list head children; / this processs children * struct files.struct *files; / list of open files * struct mmstruct *mm; / address space of this process * struct task struct struct task struct struct task struct process information process information process information current->state s newstate 人// current (currently executing proccess) Figure 3.5 Active processes in Linux.PCB in Linux