From: Bharata B Rao <bharata@linux.vnet.ibm.com>
To: Mike Galbraith <efault@gmx.de>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Ingo Molnar <mingo@elte.hu>
Cc: linux-kernel@vger.kernel.org
Subject: autogroup: sched_setscheduler() fails
Date: Mon, 10 Jan 2011 14:46:22 +0530 [thread overview]
Message-ID: <20110110091622.GF2772@in.ibm.com> (raw)
Hi,
With autogroup ON, sched_setscheduler() fails when I try to change the
scheduling policy of a normal task to either RR or FIFO.
sched_setscheduler() returns -EPERM when it finds that the group doesn't
have any rt bandwidth. This is expected because with autogroup, the task
is in an autogroup for which task_group(p)->rt_bandwidth.rt_runtime is 0.
I guess the task needs to be moved to appropriate cgroup (from its current
autogroup) when such policy change is requested, but I wasn't sure if
group change from sched_setscheduler() can be achieved easily.
Regards,
Bharata.
next reply other threads:[~2011-01-10 9:16 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-10 9:16 Bharata B Rao [this message]
2011-01-10 10:29 ` [patch] Re: autogroup: sched_setscheduler() fails Mike Galbraith
2011-01-10 10:59 ` Peter Zijlstra
2011-01-10 16:42 ` Mike Galbraith
2011-01-11 17:10 ` Bharata B Rao
2011-01-11 18:48 ` Mike Galbraith
2011-01-12 3:37 ` Bharata B Rao
2011-01-12 5:40 ` Yong Zhang
2011-01-12 6:35 ` Bharata B Rao
2011-01-12 7:24 ` Mike Galbraith
2011-01-12 8:06 ` Bharata B Rao
2011-01-12 8:47 ` Mike Galbraith
2011-01-12 9:26 ` Bharata B Rao
2011-01-12 6:17 ` Mike Galbraith
2011-01-12 6:42 ` Bharata B Rao
2011-01-12 5:40 ` Mike Galbraith
2011-01-12 6:32 ` Yong Zhang
2011-01-12 8:55 ` Mike Galbraith
2011-01-13 3:54 ` Mike Galbraith
2011-01-13 5:59 ` Yong Zhang
2011-01-13 6:02 ` Yong Zhang
2011-01-13 6:13 ` Mike Galbraith
2011-01-13 8:46 ` Bharata B Rao
2011-01-17 13:16 ` Peter Zijlstra
2011-02-15 15:46 ` torbenh
2011-02-15 16:43 ` Mike Galbraith
2011-02-18 11:09 ` torbenh
2011-02-18 12:50 ` Mike Galbraith
2011-02-18 13:40 ` torbenh
2011-02-22 12:24 ` torbenh
2011-02-22 14:47 ` Mike Galbraith
2011-02-28 17:53 ` torbenh
2011-02-28 18:29 ` Mike Galbraith
2011-02-28 19:10 ` torbenh
2011-03-01 4:02 ` Mike Galbraith
2011-03-01 4:21 ` Mike Galbraith
2011-03-01 15:59 ` torbenh
2011-01-18 19:05 ` [tip:sched/urgent] sched, autogroup: Fix CONFIG_RT_GROUP_SCHED sched_setscheduler() failure tip-bot for Mike Galbraith
2011-01-12 5:43 ` [patch] Re: autogroup: sched_setscheduler() fails Yong Zhang
2011-01-12 6:25 ` Mike Galbraith
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