On Wed, 2024-06-05 at 14:54 +0000, tip-bot2 for Tim Chen wrote: > > Signed-off-by: Tim Chen <tim.c.chen@xxxxxxxxxxxxxxx> > Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx> > Reviewed-by: Chen Yu <yu.c.chen@xxxxxxxxx> > Reviewed-by: Vincent Guittot <vincent.guittot@xxxxxxxxxx> > Link: https://lore.kernel.org/r/20240531205452.65781-1-tim.c.chen@xxxxxxxxxxxxxxx Peter, Thanks for putting the patch in tip. Can you also also add Tested-by: Mohini Narkhede <mohini.narkhede@xxxxxxxxx> Thanks. Tim > --- > kernel/sched/fair.c | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c > index 63113dc..41b5838 100644 > --- a/kernel/sched/fair.c > +++ b/kernel/sched/fair.c > @@ -11892,6 +11892,13 @@ static void kick_ilb(unsigned int flags) > return; > > /* > + * Don't bother if no new NOHZ balance work items for ilb_cpu, > + * i.e. all bits in flags are already set in ilb_cpu. > + */ > + if ((atomic_read(nohz_flags(ilb_cpu)) & flags) == flags) > + return; > + > + /* > * Access to rq::nohz_csd is serialized by NOHZ_KICK_MASK; he who sets > * the first flag owns it; cleared by nohz_csd_func(). > */
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