From: Dietmar Eggemann <dietmar.eggemann@arm.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Matt Fleming <matt@codeblueprint.co.uk>,
Vincent Guittot <vincent.guittot@linaro.org>,
Steven Rostedt <rostedt@goodmis.org>,
Morten Rasmussen <morten.rasmussen@arm.com>,
Juri Lelli <juri.lelli@arm.com>,
Patrick Bellasi <patrick.bellasi@arm.com>
Subject: Re: [RFC PATCH 2/5] sched/events: Introduce cfs_rq load tracking trace event
Date: Tue, 28 Mar 2017 15:30:41 +0200 [thread overview]
Message-ID: <cdf8bc6b-5ee8-0d15-1e50-a7cdbe9210a1@arm.com> (raw)
In-Reply-To: <20170328075622.ywdm6rh75zmhv3id@hirez.programming.kicks-ass.net>
On 03/28/2017 09:56 AM, Peter Zijlstra wrote:
> On Tue, Mar 28, 2017 at 07:35:38AM +0100, Dietmar Eggemann wrote:
[...]
>> (1) a root task_group:
>>
>> cpu=4 path=/ id=1 load=6 util=331
>
> What's @id and why do we care?
It's a per cgroup/subsystem unique id for every task_group (cpu controller):
struct task_group {
struct cgroup_subsys_state css {
...
int id;
...
}
...
}
The root task group path=/ has id=1 and all autogroups have id=0.
I agree, this id is redundant in case we have the task_group path.
next prev parent reply other threads:[~2017-03-28 13:31 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-28 6:35 [RFC PATCH 0/5] CFS load tracking trace events Dietmar Eggemann
2017-03-28 6:35 ` [RFC PATCH 1/5] sched/autogroup: Define autogroup_path() for !CONFIG_SCHED_DEBUG Dietmar Eggemann
2017-03-28 6:35 ` [RFC PATCH 2/5] sched/events: Introduce cfs_rq load tracking trace event Dietmar Eggemann
2017-03-28 7:56 ` Peter Zijlstra
2017-03-28 13:30 ` Dietmar Eggemann [this message]
2017-03-28 8:00 ` Peter Zijlstra
2017-03-28 14:47 ` Steven Rostedt
2017-03-28 14:46 ` Steven Rostedt
2017-03-28 16:44 ` Peter Zijlstra
2017-03-28 16:57 ` Peter Zijlstra
2017-03-28 17:20 ` Patrick Bellasi
2017-03-28 18:18 ` Peter Zijlstra
2017-03-28 17:36 ` Steven Rostedt
2017-03-28 17:37 ` Steven Rostedt
2017-03-29 20:37 ` Dietmar Eggemann
2017-03-29 21:03 ` Dietmar Eggemann
2017-03-30 7:04 ` Peter Zijlstra
2017-03-30 7:46 ` Dietmar Eggemann
2017-03-28 6:35 ` [RFC PATCH 3/5] sched/fair: Export group_cfs_rq() Dietmar Eggemann
2017-03-28 6:35 ` [RFC PATCH 4/5] sched/events: Introduce sched_entity load tracking trace event Dietmar Eggemann
2017-03-28 8:05 ` Peter Zijlstra
2017-03-28 14:01 ` Dietmar Eggemann
2017-03-28 14:03 ` Dietmar Eggemann
2017-03-28 8:08 ` Peter Zijlstra
2017-03-28 14:13 ` Dietmar Eggemann
2017-03-28 16:41 ` Peter Zijlstra
2017-03-29 20:19 ` Dietmar Eggemann
2017-03-28 6:35 ` [RFC PATCH 5/5] sched/events: Introduce task_group " Dietmar Eggemann
2017-03-28 10:05 ` [RFC PATCH 0/5] CFS load tracking trace events Vincent Guittot
2017-03-28 13:45 ` Dietmar Eggemann
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