On 23/05/14 16:53, Vincent Guittot wrote: > If the CPU is used for handling lot of IRQs, trig a load balance to check if > it's worth moving its tasks on another CPU that has more capacity > > Signed-off-by: Vincent Guittot <vincent.guit...@linaro.org> > --- > kernel/sched/fair.c | 13 +++++++++++++ > 1 file changed, 13 insertions(+) > > diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c > index e8a30f9..2501e49 100644 > --- a/kernel/sched/fair.c > +++ b/kernel/sched/fair.c > @@ -5948,6 +5948,13 @@ static bool update_sd_pick_busiest(struct lb_env *env, > if (sgs->sum_nr_running > sgs->group_capacity) > return true; > > + /* > + * The group capacity is reduced probably because of activity from other
Here 'group capacity' refers to sgs->group_power and not to sgs->group_capacity, right? > + * sched class or interrupts which use part of the available capacity > + */ ... 'interrupts' only w/ CONFIG_IRQ_TIME_ACCOUNTING=y, right ? > + if ((sg->sgp->power_orig * 100) > (sgs->group_power * > env->sd->imbalance_pct)) > + return true; > + [...] -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
