From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: Russell King <rmk@arm.linux.org.uk>
Cc: Linux Kernel List <linux-kernel@vger.kernel.org>
Subject: Re: INFO: task rcu_kthread:6 blocked for more than 120 seconds.
Date: Thu, 13 Jan 2011 12:41:35 -0800 [thread overview]
Message-ID: <20110113204135.GK2500@linux.vnet.ibm.com> (raw)
In-Reply-To: <20110113200526.GA31380@flint.arm.linux.org.uk>
On Thu, Jan 13, 2011 at 08:05:26PM +0000, Russell King wrote:
> On Wed, Jan 12, 2011 at 02:22:19PM -0800, Paul E. McKenney wrote:
> > Does the following patch help?
>
> Yes it does, thanks.
>
> Tested-by: Russell King <rmk+kernel@arm.linux.org.uk>
>
> > commit 70ce43253a4465211a9c51e33d56a417c759a718
> > Author: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
> > Date: Wed Jan 12 14:18:11 2011 -0800
> >
> > rcu: avoid pointless blocked-task warnings
> >
> > If the RCU callback-processing kthread has nothing to do, it parks in
> > a wait_event(). If RCU remains idle for more than two minutes, the
> > kernel complains about this. This commit changes from wait_event()
> > to wait_event_interruptible() to prevent the kernel from complaining
> > just because RCU is idle.
> >
> > Reported-by: Russell King <rmk@arm.linux.org.uk>
>
> Please add '+kernel' in there, thanks.
Done! FWIW, I copied the original from my email agent.
Thanx, Paul
prev parent reply other threads:[~2011-01-13 20:41 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-12 17:43 INFO: task rcu_kthread:6 blocked for more than 120 seconds Russell King
2011-01-12 22:22 ` Paul E. McKenney
2011-01-13 15:17 ` Thomas Weber
2011-01-13 15:42 ` Paul E. McKenney
2011-01-13 20:05 ` Russell King
2011-01-13 20:41 ` Paul E. McKenney [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20110113204135.GK2500@linux.vnet.ibm.com \
--to=paulmck@linux.vnet.ibm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=rmk@arm.linux.org.uk \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.