From: Steven Rostedt <rostedt@goodmis.org>
To: habanero@linux.vnet.ibm.com
Cc: Peter Zijlstra <peterz@infradead.org>,
linux-kernel@vger.kernel.org,
paulmck <paulmck@linux.vnet.ibm.com>
Subject: Re: BUG on 3.0-rc on commit d72bce0e67e8afc6eb959f656013cbb577426f1e
Date: Mon, 13 Jun 2011 21:24:43 -0400 [thread overview]
Message-ID: <1308014683.9218.107.camel@gandalf.stny.rr.com> (raw)
In-Reply-To: <1308009910.23688.34.camel@atheurer-ubuntu10>
On Mon, 2011-06-13 at 19:05 -0500, Andrew Theurer wrote:
> > Could you try this patch?
>
> Yes, and it works! Thanks very much!
Could you try this patch instead? I don't like holding off migration for
the entire boot processes.
-- Steve
diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index 88725c9..4505bfb 100644
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -1239,6 +1239,10 @@ static int find_lowest_rq(struct task_struct *task)
int this_cpu = smp_processor_id();
int cpu = task_cpu(task);
+ /* Make sure the mask is initialized first */
+ if (unlikely(!lowest_mask))
+ return -1;
+
if (task->rt.nr_cpus_allowed == 1)
return -1; /* No other targets possible */
next prev parent reply other threads:[~2011-06-14 1:24 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-10 13:17 Andrew Theurer
2011-06-10 14:11 ` Peter Zijlstra
2011-06-10 14:45 ` Peter Zijlstra
2011-06-10 14:52 ` Steven Rostedt
2011-06-10 14:59 ` Peter Zijlstra
2011-06-10 15:34 ` Andrew Theurer
2011-06-10 15:45 ` Andrew Theurer
2011-06-10 16:27 ` Peter Zijlstra
2011-06-13 15:06 ` Andrew Theurer
2011-06-13 15:14 ` Steven Rostedt
2011-06-13 15:33 ` Steven Rostedt
2011-06-14 0:05 ` Andrew Theurer
2011-06-14 0:35 ` Steven Rostedt
2011-06-14 0:52 ` Andrew Theurer
2011-06-14 1:24 ` Steven Rostedt [this message]
2011-06-14 2:29 ` Andrew Theurer
2011-06-14 11:02 ` Peter Zijlstra
2011-06-14 12:25 ` Steven Rostedt
2011-06-10 15:13 ` Andrew Theurer
2011-06-10 16:09 ` Peter Zijlstra
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