From: Sasha Levin <levinsasha928@gmail.com>
To: paulmck@linux.vnet.ibm.com
Cc: Peter Zijlstra <peterz@infradead.org>,
Dave Jones <davej@redhat.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: rcu: BUG: spinlock recursion on CPU#3, trinity-child19/5970
Date: Mon, 02 Jul 2012 16:36:53 +0200 [thread overview]
Message-ID: <1341239813.2958.7.camel@lappy> (raw)
In-Reply-To: <20120702142252.GA22868@linux.vnet.ibm.com>
On Mon, 2012-07-02 at 07:22 -0700, Paul E. McKenney wrote:
> > OK, so it looks like the context-switch-time call into preemptible RCU
> > needs to be outside of the runqueue-lock critical section. One way
> > to do this is be reverting 616c310e (Move PREEMPT_RCU preemption to
> > switch_to() invocation). Sasha, could you please try this out?
>
> Hmmmm... Here is a patch for this reversion on top of -rcu with
> conflicts resolved.
It looks like how I've resolved it.
Just for clarity, the only rcu related patch I have on top of -next is
this reversal one. I've dropped anything we tested before.
Looks like its running fine for a bit now (~10 min). I'll ping if
anything changes, but on the other tests it has usually failed at this
point.
next prev parent reply other threads:[~2012-07-02 14:36 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-29 10:09 rcu: BUG: spinlock recursion on CPU#3, trinity-child19/5970 Sasha Levin
2012-06-29 17:23 ` Paul E. McKenney
2012-06-29 21:40 ` Sasha Levin
2012-06-29 22:27 ` Paul E. McKenney
2012-06-29 22:40 ` Sasha Levin
2012-06-29 23:01 ` Paul E. McKenney
2012-07-02 10:32 ` Peter Zijlstra
2012-07-02 11:35 ` Paul E. McKenney
2012-07-02 11:59 ` Peter Zijlstra
2012-07-02 13:12 ` Sasha Levin
2012-07-02 13:33 ` Paul E. McKenney
2012-07-02 14:22 ` Paul E. McKenney
2012-07-02 14:36 ` Sasha Levin [this message]
2012-07-02 14:59 ` Paul E. McKenney
2012-07-04 14:54 ` Sasha Levin
2012-07-04 19:07 ` Paul E. McKenney
2012-06-30 11:36 ` Sasha Levin
2012-06-30 13:14 ` Paul E. McKenney
2012-06-30 13:28 ` Sasha Levin
2012-06-30 13:58 ` Paul E. McKenney
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=1341239813.2958.7.camel@lappy \
--to=levinsasha928@gmail.com \
--cc=davej@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=paulmck@linux.vnet.ibm.com \
--cc=peterz@infradead.org \
/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.