On Fri, Apr 03, 2015 at 12:24:08PM -0400, cmetc...@ezchip.com wrote: > From: Chris Metcalf <cmetc...@ezchip.com> > > It's not clear that nohz_full is useful without isolcpus also > set, since otherwise the scheduler has to run periodically to > try to determine whether to steal work from other cores. > > Signed-off-by: Chris Metcalf <cmetc...@ezchip.com>
I think Rick has a similar patch. > --- > I am puzzled why this has not been done before, so I suspect > there is some argument against it that I am missing, but I > wasn't able to turn anything up by searching LKML. > > kernel/sched/core.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/kernel/sched/core.c b/kernel/sched/core.c > index f0f831e8a345..275f12c608f2 100644 > --- a/kernel/sched/core.c > +++ b/kernel/sched/core.c > @@ -6836,6 +6836,7 @@ static int init_sched_domains(const struct cpumask > *cpu_map) > doms_cur = alloc_sched_domains(ndoms_cur); > if (!doms_cur) > doms_cur = &fallback_doms; > + tick_nohz_full_set_cpus(cpu_isolated_map); > cpumask_andnot(doms_cur[0], cpu_map, cpu_isolated_map); > err = build_sched_domains(doms_cur[0], NULL); > register_sched_domain_sysctl(); > -- > 2.1.2 > -- 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/
