Messages in this thread | | | Date | Tue, 11 Feb 2014 16:46:14 +0100 | From | Peter Zijlstra <> | Subject | Re: [PATCH] sched/fair: Remove idle_balance() declaration in sched.h |
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On Tue, Feb 11, 2014 at 04:33:40PM +0100, Daniel Lezcano wrote: > On 02/11/2014 04:11 PM, Peter Zijlstra wrote: > >On Tue, Feb 11, 2014 at 04:01:04PM +0100, Daniel Lezcano wrote: > >>The idle_balance() function is called within a #ifdef CONFIG_SMP section. > >> > >>Remove its declaration in sched.h for !CONFIG_SMP because it is pointless. > >> > >>Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> > > > >The below again makes a horrible mess of idle_balance() -- which you > >tried to clean up.. but it does rid us of some #ifdef goo. > > > >Hmmm? > > Yes, it sounds ok. > > Why is idle_enter_fair() called unconditionally in idle_balance() ? > Isn't the call in pick_next_task_idle enough ? Shouldn't be called when we > will go to idle effectively ? > > If I am not wrong idle_enter_fair() is called from idle_balance() but a task > may be pulled, so we the next task won't be the idle task and idle_exit_fair > won't be called at put_prev_task. > > May be I missed this change which was done at purpose in the previous > patchset you sent...
lkml.kernel.org/r/CAKfTPtAMmhq0tBpu+pk_uzwrfUM-6Fz4Do1yrzc4NRQS4cZ_-A@mail.gmail.com
I seem to be terminally confused on the subject, but Vincent explains it there I think.
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