Cc: [email protected] > > From: zhang jun <[email protected]> > > find_idlest_cpu return -1 is not reasonable, set default value to this_cpu. > > Signed-off-by: zhang jun <[email protected]> > Signed-off-by: Chuansheng Liu <[email protected]> > Signed-off-by: Changcheng Liu <[email protected]> > Cc: Hillf Danton <[email protected]> > Cc: Vincent Guittot <[email protected]> > Cc: <[email protected]> # 3.14.25 > --- > kernel/sched/fair.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c > index 9b4c4f3..9d18887 100644 > --- a/kernel/sched/fair.c > +++ b/kernel/sched/fair.c > @@ -4151,7 +4151,7 @@ static int > find_idlest_cpu(struct sched_group *group, struct task_struct *p, int > this_cpu) > { > unsigned long load, min_load = ULONG_MAX; > - int idlest = -1; > + int idlest = this_cpu; > int i; > > /* Traverse only the allowed CPUs */ > @@ -4284,7 +4284,7 @@ select_task_rq_fair(struct task_struct *p, int > prev_cpu, int sd_flag, int wake_f > } > > new_cpu = find_idlest_cpu(group, p, cpu); > - if (new_cpu == -1 || new_cpu == cpu) { > + if (new_cpu == cpu) { > /* Now try balancing at a lower domain level of cpu */ > sd = sd->child; > continue; > -- > 1.7.9.5
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