Messages in this thread | | | Date | Tue, 05 Jan 2010 09:52:15 -0600 | From | "Chris Friesen" <> | Subject | Re: init_task belongs to "process 0" or "process 1"? |
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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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