From: Dave Jones <davej@redhat.com>
Date: Thu, 22 Dec 2011 21:39:30 +0000 (-0500)
Subject: sched: Disable scheduler warnings during oopses
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=664dfa65e84429d0b68694483e1de7365c7c56fb;p=linux-beck.git

sched: Disable scheduler warnings during oopses

The panic-on-framebuffer code seems to cause a schedule
to occur during an oops. This causes a bunch of extra
spew as can be seen in:

   https://bugzilla.redhat.com/attachment.cgi?id=549230

Don't do scheduler debug checks when we are oopsing already.

Signed-off-by: Dave Jones <davej@redhat.com>
Link: http://lkml.kernel.org/r/20111222213929.GA4722@redhat.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 081ece26803f..8ffe523dfa8e 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -3077,6 +3077,9 @@ static noinline void __schedule_bug(struct task_struct *prev)
 {
 	struct pt_regs *regs = get_irq_regs();
 
+	if (oops_in_progress)
+		return;
+
 	printk(KERN_ERR "BUG: scheduling while atomic: %s/%d/0x%08x\n",
 		prev->comm, prev->pid, preempt_count());