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    Subject[PATCH v2 6/7] sched/core: remove superfluous resetting of dl_throttled flag
    Date
    Resetting dl_throttled flag in rt_mutex_setprio (for a task that is going
    to be boosted) is superfluous, as the natural place to do so is in
    replenish_dl_entity(). If the task was on the runqueue and it is boosted
    by a DL task, it will be enqueued back with ENQUEUE_REPLENISH flag set,
    which can guarantee that dl_throttled is reset in replenish_dl_entity().

    This patch drops the resetting of throttled status in function
    rt_mutex_setprio().

    Signed-off-by: Wanpeng Li <wanpeng.li@linux.intel.com>
    ---
    v1 -> v2:
    * rewrite patch subject and changelog

    kernel/sched/core.c | 1 -
    1 file changed, 1 deletion(-)

    diff --git a/kernel/sched/core.c b/kernel/sched/core.c
    index 355f953..a9fd4916 100644
    --- a/kernel/sched/core.c
    +++ b/kernel/sched/core.c
    @@ -3087,7 +3087,6 @@ void rt_mutex_setprio(struct task_struct *p, int prio)
    if (!dl_prio(p->normal_prio) ||
    (pi_task && dl_entity_preempt(&pi_task->dl, &p->dl))) {
    p->dl.dl_boosted = 1;
    - p->dl.dl_throttled = 0;
    enqueue_flag = ENQUEUE_REPLENISH;
    } else
    p->dl.dl_boosted = 0;
    --
    1.9.1


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