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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
