From: luca abeni <luca.abeni@santannapisa.it>
To: Dietmar Eggemann <dietmar.eggemann@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@kernel.org>,
Juri Lelli <juri.lelli@redhat.com>,
Daniel Bristot de Oliveira <bristot@redhat.com>,
Valentin Schneider <Valentin.Schneider@arm.com>,
Qais Yousef <Qais.Yousef@arm.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/5] sched/deadline: Fix double accounting of rq/running bw in push_dl_task()
Date: Fri, 26 Jul 2019 15:30:02 +0200 [thread overview]
Message-ID: <20190726153002.5e49c666@sweethome> (raw)
In-Reply-To: <20190726082756.5525-2-dietmar.eggemann@arm.com>
Hi,
On Fri, 26 Jul 2019 09:27:52 +0100
Dietmar Eggemann <dietmar.eggemann@arm.com> wrote:
[...]
> @@ -2121,17 +2121,13 @@ static int push_dl_task(struct rq *rq)
> }
>
> deactivate_task(rq, next_task, 0);
> - sub_running_bw(&next_task->dl, &rq->dl);
> - sub_rq_bw(&next_task->dl, &rq->dl);
> set_task_cpu(next_task, later_rq->cpu);
> - add_rq_bw(&next_task->dl, &later_rq->dl);
>
> /*
> * Update the later_rq clock here, because the clock is used
> * by the cpufreq_update_util() inside __add_running_bw().
> */
> update_rq_clock(later_rq);
> - add_running_bw(&next_task->dl, &later_rq->dl);
Looking at the code again and thinking a little bit more about this
issue, I suspect a similar change is needed in pull_dl_task() too, no?
Luca
next prev parent reply other threads:[~2019-07-26 13:30 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-26 8:27 [PATCH 0/5] sched/deadline: Fix double accounting in push_dl_task() & some cleanups Dietmar Eggemann
2019-07-26 8:27 ` [PATCH 1/5] sched/deadline: Fix double accounting of rq/running bw in push_dl_task() Dietmar Eggemann
2019-07-26 10:11 ` luca abeni
2019-07-29 8:59 ` Dietmar Eggemann
2019-07-29 16:10 ` Peter Zijlstra
2019-07-26 13:30 ` luca abeni [this message]
2019-07-29 9:00 ` Dietmar Eggemann
2019-07-31 10:32 ` Dietmar Eggemann
2019-07-26 8:27 ` [PATCH 2/5] sched/deadline: Remove unused int flags from __dequeue_task_dl() Dietmar Eggemann
2019-07-29 16:35 ` Peter Zijlstra
2019-07-29 17:12 ` Dietmar Eggemann
2019-07-26 8:27 ` [PATCH 3/5] sched/deadline: Use __sub_running_bw() throughout dl_change_utilization() Dietmar Eggemann
2019-07-29 16:47 ` Peter Zijlstra
2019-07-29 17:21 ` Dietmar Eggemann
2019-07-26 8:27 ` [PATCH 4/5] sched/deadline: Cleanup on_dl_rq() handling Dietmar Eggemann
2019-07-26 8:37 ` Valentin Schneider
2019-07-26 8:58 ` Qais Yousef
2019-07-26 9:20 ` Juri Lelli
2019-07-26 9:32 ` Valentin Schneider
2019-07-29 16:49 ` Peter Zijlstra
2019-07-30 6:41 ` Juri Lelli
2019-07-30 8:21 ` Peter Zijlstra
2019-07-31 17:32 ` Dietmar Eggemann
2019-07-31 20:20 ` luca abeni
2019-08-01 16:01 ` Dietmar Eggemann
2019-07-26 8:27 ` [PATCH 5/5] sched/deadline: Use return value of SCHED_WARN_ON() in bw accounting Dietmar Eggemann
2019-07-26 10:18 ` luca abeni
2019-07-29 16:54 ` Peter Zijlstra
2019-07-29 16:59 ` Dietmar Eggemann
2019-07-30 8:23 ` Peter Zijlstra
2019-07-30 16:08 ` Dietmar Eggemann
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