Messages in this thread | | | From | Vincent Guittot <> | Date | Tue, 30 Mar 2021 14:22:01 +0200 | Subject | Re: [PATCH -next] sched/fair: Move update_nohz_stats() under CONFIG_NO_HZ_COMMON |
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On Tue, 30 Mar 2021 at 14:06, Kefeng Wang <wangkefeng.wang@huawei.com> wrote: > > update_nohz_stats() only call _nohz_idle_balance() under CONFIG_NO_HZ_COMMON.
a similar patch has already been sent and reviewed : 20210329144029.29200-1-yuehaibing@huawei.com
> > Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> > --- > kernel/sched/fair.c | 40 ++++++++++++++++++---------------------- > 1 file changed, 18 insertions(+), 22 deletions(-) > > diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c > index 6d73bdbb2d40..2a20ada83cbb 100644 > --- a/kernel/sched/fair.c > +++ b/kernel/sched/fair.c > @@ -8395,28 +8395,6 @@ group_type group_classify(unsigned int imbalance_pct, > return group_has_spare; > } > > -static bool update_nohz_stats(struct rq *rq) > -{ > -#ifdef CONFIG_NO_HZ_COMMON > - unsigned int cpu = rq->cpu; > - > - if (!rq->has_blocked_load) > - return false; > - > - if (!cpumask_test_cpu(cpu, nohz.idle_cpus_mask)) > - return false; > - > - if (!time_after(jiffies, READ_ONCE(rq->last_blocked_load_update_tick))) > - return true; > - > - update_blocked_averages(cpu); > - > - return rq->has_blocked_load; > -#else > - return false; > -#endif > -} > - > /** > * update_sg_lb_stats - Update sched_group's statistics for load balancing. > * @env: The load balancing environment. > @@ -10380,6 +10358,24 @@ void nohz_balance_enter_idle(int cpu) > WRITE_ONCE(nohz.has_blocked, 1); > } > > +static bool update_nohz_stats(struct rq *rq) > +{ > + unsigned int cpu = rq->cpu; > + > + if (!rq->has_blocked_load) > + return false; > + > + if (!cpumask_test_cpu(cpu, nohz.idle_cpus_mask)) > + return false; > + > + if (!time_after(jiffies, READ_ONCE(rq->last_blocked_load_update_tick))) > + return true; > + > + update_blocked_averages(cpu); > + > + return rq->has_blocked_load; > +} > + > /* > * Internal function that runs load balance for all idle cpus. The load balance > * can be a simple update of blocked load or a complete load balance with > -- > 2.26.2 >
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