From: Geoff Levand <geoff@infradead.org>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: cbe-oss-dev@lists.ozlabs.org, Andre Heider <a.heider@gmail.com>,
linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
Frank Rowand <frank.rowand@us.sony.com>
Subject: Re: Kernel hang on PS3 with SMP
Date: Fri, 28 Oct 2011 18:33:25 -0700 [thread overview]
Message-ID: <1319852005.24935.40.camel@gum> (raw)
In-Reply-To: <4EAA02A7.7010109@infradead.org>
Hi,
On Thu, 2011-10-27 at 18:17 -0700, Geoff Levand wrote:
> I verified that indeed 317f394160e9beb97d19a84c39b7e5eb3d7815a8
> 'sched: Move the second half of ttwu() to the remote cpu' introduces
> the hang.
After some more digging I found that it seems a short while after
startup ps3_smp_message_pass() gets called with a PPC_MSG_RESCHEDULE,
but then there is no corresponding call to scheduler_ipi() on the target
cpu.
I'll do some more work on it and verify that this is what is actually
happening.
-Geoff
prev parent reply other threads:[~2011-10-29 1:33 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAHsu+b-AEtOs+YuYxYFTkMjGwUMoc3jP9cYYkb31nZ+JVrGNVQ@mail.gmail.com>
[not found] ` <1310808863.13765.3.camel@twins>
2011-10-28 1:17 ` Kernel hang on PS3 with SMP Geoff Levand
2011-10-29 1:33 ` Geoff Levand [this message]
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