linux-kernel - Re: irq 16: nobody cared

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Date:	Sat, 20 Apr 2013 16:52:07 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Borislav Petkov <bp@...en8.de>
Cc:	x86-ml <x86@...nel.org>, lkml <linux-kernel@...r.kernel.org>
Subject: Re: irq 16: nobody cared

On Sat, Apr 20, 2013 at 08:53:30PM +0200, Borislav Petkov wrote:
> Hi Paul,
> 
> so I've been bisecting another issue and have been seeing the warning
> in the attached pic. Reverting c0f4dfd4f90f1667d234d21f15153ea09a2eaa66
> ("rcu: Make RCU_FAST_NO_HZ take advantage of numbered callbacks") seems
> to fix the issue. The warning appears as the last thing on the screen
> before the machine goes down after being suspended to disk.
> 
> And IRQ 16 and azx_interrupt both belong to hda_intel.c
> 
> Any ideas?

Hmmm...  Does this problem occur only with CONFIG_RCU_FAST_NO_HZ=y,
or does it occur unconditionally?  (My guess is the former, but figured
I should check.)

							Thanx, Paul

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