Messages in this thread | | | Date | Thu, 28 Aug 2008 11:00:36 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH] make poll_idle behave more like the other idle methods |
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* Joe Korty <joe.korty@ccur.com> wrote:
> Make poll_idle() behave more like the other idle methods. > > Currently, poll_idle() returns immediately. The other > idle methods all wait indefinately for some condition > to come true before returning. poll_idle should emulate > these other methods and also wait for a return condition, > in this case, for need_resched() to become 'true'. > > Without this delay the idle loop spends all of its time > in the outer loop that calls poll_idle. This outer loop, > these days, does real work, some of it under rcu locks. > That work should only be done when idle is entered and > when idle exits, not continuously while idle is spinning.
i'm wondering, what's the motivation, have you actually seen anything bad/undesired happen due to that?
Ingo
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