Messages in this thread | | | Date | Fri, 6 Apr 2007 19:32:49 +0200 | From | Ingo Molnar <> | Subject | Re: init's children list is long and slows reaping children. |
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* Oleg Nesterov <oleg@tv-sign.ru> wrote:
> > Thinking about it I do agree with Linus that two lists sounds like > > the right solution because it ensures we always have O(1) time when > > waiting for a zombie. > > Well. I bet this will be painful, and will uglify the code even more. > > do_wait() has to iterate over 2 lists, __ptrace_unlink() should check > ->exit_state, etc...
no. Two _completely separate_ lists.
i.e. a to-be-reaped task will still be on the main list _too_. The main list is for all the PID semantics rules. The reap-list is just for wait4() processing. The two would be completely separate.
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