Re: [patch] CFS (Completely Fair Scheduler), v2

* Nick Piggin <[email protected]> wrote:

> >                   list_add_tail(&p->run_list, &current->run_list);
[...]
> > shouldnt the list_add_tail() be list_add(), so that task pickup sees 
> > the child first? [...]
[...]
> I think that it works because the list we're adding to is not the 
> normal runqueue list head, but the parent's list_head on that 
> runqueue. Which adds the child directly ahead of the parent... I 
> think?

yeah, you are right, i was confused: list_add() adds _after_ the head, 
list_add_tail() adds _before_ the head - and in the middle of the list 
if we do a list_add_tail() it adds before that entry. So everything's 
fine and working as expected :)

	Ingo
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---

• References:
  • [patch] CFS (Completely Fair Scheduler), v2
    • From: Ingo Molnar <[email protected]>
  • Re: [patch] CFS (Completely Fair Scheduler), v2
    • From: Gene Heskett <[email protected]>
  • Re: [patch] CFS (Completely Fair Scheduler), v2
    • From: Ingo Molnar <[email protected]>
  • Re: [patch] CFS (Completely Fair Scheduler), v2
    • From: Davide Libenzi <[email protected]>
  • Re: [patch] CFS (Completely Fair Scheduler), v2
    • From: Nick Piggin <[email protected]>
  • Re: [patch] CFS (Completely Fair Scheduler), v2
    • From: Ingo Molnar <[email protected]>
  • Re: [patch] CFS (Completely Fair Scheduler), v2
    • From: Nick Piggin <[email protected]>

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