hulk inclusion category: bugfix bugzilla: https://atomgit.com/openeuler/kernel/issues/8425 -------------------------------- Fix commit 70769fe636ef ("sched/fair: Hoist idle_stamp up from idle_balance")forgot to add the complete idle_stamp start/end tracking interval around sched_balance_newidle() in balance_fair. Fixes: 70769fe636ef ("sched/fair: Hoist idle_stamp up from idle_balance") Signed-off-by: Chen Jinghuang <chenjinghuang2@huawei.com> --- kernel/sched/fair.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index b21c1ba1ded1..e60f19cb0fee 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -9467,10 +9467,19 @@ static void task_dead_fair(struct task_struct *p) static int balance_fair(struct rq *rq, struct task_struct *prev, struct rq_flags *rf) { + int new_tasks; + if (rq->nr_running) return 1; - return newidle_balance(rq, rf) != 0; + rq_idle_stamp_update(rq); + + new_tasks = newidle_balance(rq, rf); + + if (new_tasks) + rq_idle_stamp_clear(rq); + + return new_tasks != 0; } #endif /* CONFIG_SMP */ -- 2.34.1