On Tue, Jul 07, 2015 at 01:28:18PM -0700, Cong Wang wrote: > On Mon, Jul 6, 2015 at 9:40 PM, <byungchul.p...@lge.com> wrote: > > From: Byungchul Park <byungchul.p...@lge.com> > > > > __sched_period() returns a period which a rq can have. the period has to be > > stretched by the number of task *the rq has*, when nr_running > nr_latency. > > otherwise, task slice can be very smaller than sysctl_sched_min_granularity > > depending on the position of tg hierarchy when CONFIG_FAIR_GROUP_SCHED. > > > Hmm, rq_of(cfs_rq)->cfs should point to the root cfs_rq whose > ->nr_running is number of running entities at root level? This > doesn't look right.
hello, cong wang, __sched_period() returns a root level period now. stretching the period with a local task group's nr_running is meaningless for getting this period. is there something i missed? :) thank you, byungchul > -- > 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/ -- 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/
