linux-kernel - Re: [Question] Linux CFS sched

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Message-ID: <20140325114936.GA29592@e103034-lin>
Date:	Tue, 25 Mar 2014 11:49:36 +0000
From:	Morten Rasmussen <morten.rasmussen@....com>
To:	"lwcheng@...hku.hk" <lwcheng@...hku.hk>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [Question] Linux CFS sched_entity

On Mon, Mar 17, 2014 at 04:55:41AM +0000, lwcheng@...hku.hk wrote:
> In what situations does cfs_rq->curr point to a task_group?
> What's the sense? I thought it should always contain a "real" task.

In nested task groups cfs_rq->curr may point to a sched_entity which is
a nested task group (cfs_rq).

parent_group -> child_group -> task

Morten
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