Re: [PATCH] i386: add command line option "local_apic_timer_c2_ok"

[Grzegorz Chwesewicz]

On Thu, 29 Mar 2007 22:49:37 +0200, Andi Kleen wrote
> > Reviewed but not tested.  Needs to be wrapped in an AMD specific
> > call.
> 
> Here's a patch. I don't have a system with C1E, so i only tested that
> the apic timer still works on a older AMD box.
> 
> Would be good if someone with a Turion laptop, especially the HP nx6325
> could test it with CONFIG_NO_HZ enabled.

I have nx6325 with Turion.

ensima-hp linux-2.6 # cat .config|grep NO_HZ
CONFIG_NO_HZ=y

After patching system works ok on battery and on AC.

On battery:

cat /proc/interrupts

           CPU0       CPU1
  0:     115771          0  local-APIC-edge-fasteoi   timer
  1:        508          1   IO-APIC-edge      i8042
  8:          1          1   IO-APIC-edge      rtc
 12:        147          2   IO-APIC-edge      i8042
 14:         36          1   IO-APIC-edge      ide0
 16:          0          1   IO-APIC-fasteoi   yenta, sdhci:slot0
 17:       4538        116   IO-APIC-fasteoi   eth0
 18:       1697          6   IO-APIC-fasteoi   libata, HDA Intel
 19:         50          1   IO-APIC-fasteoi   ohci_hcd:usb1, ohci_hcd:usb2,
ehci_hcd:usb3
 21:         30          9   IO-APIC-fasteoi   acpi
NMI:          0          0
LOC:          0     115601
ERR:          1
MIS:          0

sleep 10

           CPU0       CPU1
  0:     125777          0  local-APIC-edge-fasteoi   timer
  1:        509          1   IO-APIC-edge      i8042
  8:          1          1   IO-APIC-edge      rtc
 12:        147          2   IO-APIC-edge      i8042
 14:         36          1   IO-APIC-edge      ide0
 16:          0          1   IO-APIC-fasteoi   yenta, sdhci:slot0
 17:       4749        116   IO-APIC-fasteoi   eth0
 18:       1704          6   IO-APIC-fasteoi   libata, HDA Intel
 19:         50          1   IO-APIC-fasteoi   ohci_hcd:usb1, ohci_hcd:usb2,
ehci_hcd:usb3
 21:         30          9   IO-APIC-fasteoi   acpi
NMI:          0          0
LOC:          0     125607
ERR:          1
MIS:          0

#######################################

On AC:

cat /proc/interrupts

           CPU0       CPU1
  0:        261          0  local-APIC-edge-fasteoi   timer
  1:        346          1   IO-APIC-edge      i8042
  8:          1          1   IO-APIC-edge      rtc
 12:        147          2   IO-APIC-edge      i8042
 14:         36          1   IO-APIC-edge      ide0
 16:          0          1   IO-APIC-fasteoi   yenta, sdhci:slot0
 17:       1135        115   IO-APIC-fasteoi   eth0
 18:       1620          6   IO-APIC-fasteoi   libata, HDA Intel
 19:         50          1   IO-APIC-fasteoi   ohci_hcd:usb1, ehci_hcd:usb2,
ohci_hcd:usb3
 21:         24          9   IO-APIC-fasteoi   acpi
NMI:          0          0
LOC:       7562       9007
ERR:          0
MIS:          0

sleep 10

           CPU0       CPU1
  0:        261          0  local-APIC-edge-fasteoi   timer
  1:        347          1   IO-APIC-edge      i8042
  8:          1          1   IO-APIC-edge      rtc
 12:        147          2   IO-APIC-edge      i8042
 14:         36          1   IO-APIC-edge      ide0
 16:          0          1   IO-APIC-fasteoi   yenta, sdhci:slot0
 17:       1411        115   IO-APIC-fasteoi   eth0
 18:       1627          6   IO-APIC-fasteoi   libata, HDA Intel
 19:         50          1   IO-APIC-fasteoi   ohci_hcd:usb1, ehci_hcd:usb2,
ohci_hcd:usb3
 21:         24          9   IO-APIC-fasteoi   acpi
NMI:          0          0
LOC:       7592       9184
ERR:          0
MIS:          0

--
Greetings - CeHo - Grzegorz Chwesewicz
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