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    SubjectRe: init_task belongs to "process 0" or "process 1"?
    On 01/05/2010 01:32 AM, Nobin Mathew wrote:
    > init_task is the head of doubly linked list which holds all
    > task_structs in the system. init_task is again the task_struct for
    > process 0/swapper/idle task. This process is created manually (I meant
    > to say not by copy_process() calls). Manually means they are static
    > structures defined in the code (see INIT_TASK, init_mm, init_fs etc).
    > There will be multiple idle task if there is more than 1 cpu core.
    > Idle task is the one which is scheduled if there is no other task
    > ready for scheduling.
    >
    > Init task is process 1 which is initially a kernel thread created from
    > process 0 using copy_process(), then it does an execv() (/sbin/init )
    > or similar one to create the normal process init.
    >
    > Name given to process 0 is swapper.
    > .comm = "swapper"

    Oddly enough, this name makes no sense anymore. Why don't we call
    process 0 "idle"?

    Chris


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