From: Peter Zijlstra <peterz@infradead.org>
To: Juri Lelli <juri.lelli@arm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>,
luca abeni <luca.abeni@unitn.it>,
linux-kernel@vger.kernel.org, mingo@redhat.com,
vincent.guittot@linaro.org, wanpeng.li@hotmail.com
Subject: Re: [PATCH 1/2] sched/deadline: add per rq tracking of admitted bandwidth
Date: Thu, 25 Feb 2016 11:20:34 +0100 [thread overview]
Message-ID: <20160225102034.GE6357@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <20160225100706.GB3680@pablo>
On Thu, Feb 25, 2016 at 10:07:06AM +0000, Juri Lelli wrote:
> Argh, this makes lot of sense to me. I've actually pondered a tree/list
> solution, but then decided to try the cumulative approach because it
> looked nicer. But it contains holes, I'm afraid. As Luca already said,
> GRUB shouldn't have these problems though.
>
> I'll try and see what introducting a list of blocked/throttled deadline
> tasks means, considering also the interaction with cpusets and such.
> Maybe it's simpler than it seems.
>
> I'm not sure this will come anytime soon, unfortunately. I'm almost 100%
> on the sched-freq/schedutil discussion these days.
Just skip sleep and write them when its dark outside :-)
> Anyway, do you also think that what we want to solve the root domain
> issue is something based on rq_online/offline and per-rq information?
> Everything else that I tried or thought of was broken/more horrible. :-/
I was still trying to get my head around this, the above was my
suggestion to the per-rq state, but I've not thought hard on alternative
approaches to the root_domain issue.
next prev parent reply other threads:[~2016-02-25 10:20 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-08 12:45 [PATCH 0/2] sched/deadline: fix cpusets bandwidth accounting Juri Lelli
2016-02-08 12:45 ` [PATCH 1/2] sched/deadline: add per rq tracking of admitted bandwidth Juri Lelli
2016-02-10 11:32 ` Juri Lelli
2016-02-10 11:43 ` luca abeni
2016-02-10 11:58 ` Juri Lelli
2016-02-19 13:43 ` luca abeni
2016-02-19 14:20 ` Steven Rostedt
2016-02-19 14:53 ` luca abeni
2016-02-19 14:57 ` Steven Rostedt
2016-02-22 11:03 ` luca abeni
2016-02-22 10:57 ` [PATCH 0/3] cleanup " Luca Abeni
2016-02-22 10:57 ` [PATCH 1/4] Move some calls to __dl_{sub,add}_ac() from core.c to deadline.c Luca Abeni
2016-02-22 10:57 ` [PATCH 2/4] Move the remaining __dl_{sub,add}_ac() calls " Luca Abeni
2016-02-22 10:57 ` [PATCH 3/4] Remove dl_new Luca Abeni
2016-02-23 15:42 ` Peter Zijlstra
2016-02-24 13:53 ` luca abeni
2016-02-25 9:46 ` Juri Lelli
2016-03-03 9:03 ` luca abeni
2016-03-03 9:28 ` Juri Lelli
2016-03-03 14:23 ` Steven Rostedt
2016-03-03 14:31 ` luca abeni
2016-03-03 16:12 ` Juri Lelli
2016-02-10 12:48 ` [PATCH 1/2] sched/deadline: add per rq tracking of admitted bandwidth luca abeni
2016-02-10 13:42 ` Juri Lelli
2016-02-23 15:48 ` Peter Zijlstra
2016-02-23 15:51 ` Juri Lelli
2016-02-10 14:37 ` Steven Rostedt
2016-02-10 16:27 ` Juri Lelli
2016-02-11 12:12 ` Juri Lelli
2016-02-11 12:22 ` luca abeni
2016-02-11 12:27 ` Juri Lelli
2016-02-11 12:40 ` luca abeni
2016-02-11 12:49 ` Juri Lelli
2016-02-11 13:05 ` luca abeni
2016-02-11 14:25 ` Steven Rostedt
2016-02-11 17:10 ` Juri Lelli
2016-02-12 17:05 ` Peter Zijlstra
2016-02-12 17:19 ` Juri Lelli
2016-02-24 19:17 ` Peter Zijlstra
2016-02-24 21:46 ` luca abeni
2016-02-25 7:53 ` Peter Zijlstra
2016-02-25 10:07 ` Juri Lelli
2016-02-25 10:20 ` Peter Zijlstra [this message]
2016-03-24 9:20 ` Peter Zijlstra
2016-02-11 21:48 ` Luca Abeni
2016-02-08 12:45 ` [PATCH 2/2] sched/deadline: rq_{online,offline}_dl for root_domain changes Juri Lelli
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