On Sun, 14 Jun 2009 14:15:16 +0200
"Rafael J. Wysocki" <rjw@xxxxxxx> wrote:
> On Sunday 14 June 2009, Thomas Gleixner wrote:
> > On Sun, 14 Jun 2009, Rafael J. Wysocki wrote:
> > > Evidently, the change of the interrupt handling during suspend-resume,
> > > commit 2ed8d2b3a81bdbb0418301628ccdb008ac9f40b7 (PM: Rework handling of
> > > interrupts during suspend-resume) broke resume (specifically, the enabling of
> > > nonboot CPUs) on the Benjamin's machine, but only if MSI support is enabled.
> > > Also, resume works if suspend_device_irqs() and resume_device_irqs() in
> > > drivers/base/power/main.c are commented out.
> > >
> > > Is there anything the MSI code does in __enable_irq() and/or __disable_irq()
> > > that might cause this problem to appear?
> >
> > Not that I'm aware of. Which of the devices is using MSI ? Have to
> > tried to skip only the MSI ones in suspend/resume_device_irqs() ?
>
> Good idea.
>
> Benjamin, please send /proc/interrupts from your system.
I guess it does not matter if from 2.6.29.2 or from 2.6.30. This
is from 2.6.29.2 with CONFIG_PCI_MSI set:
CPU0 CPU1
0: 42 1 IO-APIC-edge timer
1: 0 81 IO-APIC-edge i8042
6: 0 5 IO-APIC-edge floppy
8: 0 1 IO-APIC-edge rtc0
9: 0 0 IO-APIC-fasteoi acpi
14: 0 328 IO-APIC-edge ide0
15: 0 0 IO-APIC-edge ide1
16: 2 408 IO-APIC-fasteoi ohci_hcd:usb1, ohci_hcd:usb3, HDA Intel
17: 0 3 IO-APIC-fasteoi ehci_hcd:usb2
18: 0 0 IO-APIC-fasteoi ohci_hcd:usb5, ohci_hcd:usb6, ohci_hcd:usb7
19: 0 17 IO-APIC-fasteoi ehci_hcd:usb4, HDA Intel
24: 4830 0 HPET_MSI-edge hpet2
26: 0 135 PCI-MSI-edge eth0
27: 0 2855 PCI-MSI-edge ahci
NMI: 0 0 Non-maskable interrupts
LOC: 42 5070 Local timer interrupts
RES: 2634 2170 Rescheduling interrupts
CAL: 72 104 Function call interrupts
TLB: 367 198 TLB shootdowns
TRM: 0 0 Thermal event interrupts
THR: 0 0 Threshold APIC interrupts
SPU: 0 0 Spurious interrupts
ERR: 0
MIS: 0
I am going to compile 2.6.30 with CONFIG_PCI_MSI again to ensure
it is the same, but that will take some time.
Benjamin
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