> Hi everybody!
>
> A simple question: I don't have an entry for the kernel
> idle thread (PID=0) under /proc (i.e. /proc/0 doesn't
> exists). Is it normal?. Why?. Doesn't the kernel idle
> thread have a normal process entry?.
The for_each_task() macro starts at init task (PID 1) and goes through
all processes in the circular linked list. PID 0 ('swapper' process) is
not on this list. Since for_each_task is used to create/display the
entries in /proc, you won't see /proc/0.
-Ravi.
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