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Message-Id: <1244094918.22576.6.camel@johannes.local>
Date:	Thu, 04 Jun 2009 07:55:18 +0200
From:	Johannes Berg <johannes@...solutions.net>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>
Subject: Re: [Bug #13306] hibernate slow on _second_ run

On Wed, 2009-06-03 at 23:51 +0200, Rafael J. 
> > > Can you please send me /proc/interrupts from the affected box?
> > 
> > $ cat /proc/interrupts 
> >             CPU0       CPU1       
> >    0:    1820687          0   IO-APIC-edge      timer
> >    7:          1          0   IO-APIC-edge    
> >    9:      38721          0   IO-APIC-fasteoi   acpi
> >   16:        940          0   IO-APIC-fasteoi   HDA Intel
> >   17:        517          0   IO-APIC-fasteoi   ohci_hcd:usb4
> >   18:     289829          0   IO-APIC-fasteoi   ohci_hcd:usb3
> >   19:    2035671          0   IO-APIC-fasteoi   ehci_hcd:usb2
> >   20:         32          0   IO-APIC-fasteoi   ehci_hcd:usb1
> >   25:     515569          0   PCI-MSI-edge      ahci
> >   26:          0          0   PCI-MSI-edge      eth0
> >  NMI:          0          0   Non-maskable interrupts
> >  LOC:     152936     638337   Local timer interrupts
> >  SPU:          0          0   Spurious interrupts
> >  RES:     317238     581858   Rescheduling interrupts
> >  CAL:         43        128   Function call interrupts
> >  TLB:      60645      53553   TLB shootdowns
> >  TRM:          0          0   Thermal event interrupts
> >  THR:          0          0   Threshold APIC interrupts
> >  ERR:          1
> >  MIS:          0
> 
> Hmm.  The patch shouldn't matter for this box, except for one thing:
> check_irq_resend() on resume.  Interesting.

Yeah, well, turns out it didn't help anyway:

[30490.846160] ACPI: Waking up from system sleep state S4
[30491.371450] HDA Intel 0000:00:08.0: restoring config space at offset 0x1 (was 0xb00006, writing 0xb00002)
[30491.379411] forcedeth 0000:00:0a.0: restoring config space at offset 0x1 (was 0xb00003, writing 0xb00007)
[30491.387352] ahci 0000:00:0b.0: restoring config space at offset 0x1 (was 0xb00403, writing 0xb00407)
[30511.970606] pci 0000:00:03.2: PME# disabled

The problem doesn't always happen. But now that it happens here again,
maybe I can try ftrace again...

johannes

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