On Wed, 31 Jul 2019 12:37:15 +0200
Juri Lelli <juri.lelli@xxxxxxxxxx> wrote:
> SCHED_DEADLINE inactive timer needs to run in hardirq context (as
> dl_task_timer already does).
>
> Make it HRTIMER_MODE_REL_HARD.
>
> Signed-off-by: Juri Lelli <juri.lelli@xxxxxxxxxx>
> ---
> Hi,
>
> Both v4.19-rt and v5.2-rt need this.
>
> Mainline "sched: Mark hrtimers to expire in hard interrupt context"
> series needs this as well (20190726185753.077004842@xxxxxxxxxxxxx in
> particular). Do I need to send out a separate patch for it?
>
> Best,
>
> Juri
> ---
> kernel/sched/deadline.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
> index 1794e152d888..0889674b8915 100644
> --- a/kernel/sched/deadline.c
> +++ b/kernel/sched/deadline.c
> @@ -1292,7 +1292,7 @@ void init_dl_inactive_task_timer(struct sched_dl_entity *dl_se)
> {
> struct hrtimer *timer = &dl_se->inactive_timer;
>
> - hrtimer_init(timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
> + hrtimer_init(timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_HARD);
> timer->function = inactive_task_timer;
> }
>
> --
> 2.17.2
>
Acked-by: Clark Williams <williams@xxxxxxxxxx>
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