From: Mike Galbraith <efault@gmx.de>
To: Alexey Vlasov <renton@renton.name>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Attaching a process to cgroups
Date: Thu, 21 Jun 2012 10:23:02 +0200 [thread overview]
Message-ID: <1340266982.29752.37.camel@marge.simpson.net> (raw)
In-Reply-To: <20120621075428.GE31797@beaver>
On Thu, 2012-06-21 at 11:54 +0400, Alexey Vlasov wrote:
> On Wed, Jun 20, 2012 at 02:28:18PM +0200, Mike Galbraith wrote:
> >
> > kernel/cgroup.c::cgroup_attach_task()
> > {
> > ...
> > synchronize_rcu();
> > ...
> > }
>
> So nothing can be done here? (I mean if only I knew how to fix it I
> wouldn't ask about it ;)
Sure, kill the obnoxious thing, it's sitting right in the middle of the
userspace interface.
I banged on it a while back (wrt explosive android patches), extracted
RCU from the userspace interface. It seemed to work great, much faster,
couldn't make it explode. I wouldn't bet anything I wasn't willing to
immediately part with that the result was really really safe though ;-)
-Mike
next prev parent reply other threads:[~2012-06-21 8:23 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-19 18:58 Alexey Vlasov
2012-06-20 3:34 ` Daisuke Nishimura
2012-06-20 11:08 ` Alexey Vlasov
2012-06-20 12:28 ` Mike Galbraith
2012-06-21 7:54 ` Alexey Vlasov
2012-06-21 8:23 ` Mike Galbraith [this message]
2012-06-21 8:26 ` Mike Galbraith
2012-06-26 18:06 ` Paul E. McKenney
2012-06-27 7:23 ` Mike Galbraith
2012-06-27 17:10 ` Paul E. McKenney
2012-06-28 2:40 ` Mike Galbraith
2012-07-23 20:41 ` Andrea Righi
2012-07-24 1:19 ` Mike Galbraith
2012-07-25 13:36 ` Alexey Vlasov
2012-07-25 13:57 ` Mike Galbraith
2012-07-26 13:02 ` Alexey Vlasov
2012-07-26 14:44 ` Mike Galbraith
2012-08-08 16:40 ` Alexey Vlasov
2012-08-08 16:51 ` Paul E. McKenney
2012-08-10 9:53 ` Alexey Vlasov
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