Rafael,

On Tue, 2007-09-25 at 10:07 +0200, Thomas Gleixner wrote:
> On Tue, 2007-09-25 at 10:14 +0400, Mikhail Kshevetskiy wrote:
> > Hello Thomas, Rafael
> >
> > > We know, that
> > > - disabling local apic timers work
> >
> > As i can see from the log, you are booting on computer with dualcore AMD
> > processor. Do you have C1E feature enabled?
> >
> > i386 kernel disable lapic on dualcore AMD with C1E support (see
> > http://lkml.org/lkml/2007/3/29/199). x86_64 kernel do not have this
> > patch still (it's required for tickless kernel only).
>
> Well it is required for non tickless mode as well.
>
> > As result, if
> > you run x86_64 kernel with hrt patch on such computer, the system
> > will stall during boot on lapic timer calibration.
>
> Thanks for the reminder. I have a look into this.

Can you please boot mainline and provide the output of:

# cat /proc/interrupts; sleep 10; cat /proc/interrupts

Thanks,

tglx


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

Thomas,

On Tuesday, 25 September 2007 11:30, Thomas Gleixner wrote:
> Rafael,
>
> On Tue, 2007-09-25 at 10:07 +0200, Thomas Gleixner wrote:
> > On Tue, 2007-09-25 at 10:14 +0400, Mikhail Kshevetskiy wrote:
> > > Hello Thomas, Rafael
> > >
> > > > We know, that
> > > > - disabling local apic timers work
> > >
> > > As i can see from the log, you are booting on computer with dualcore AMD
> > > processor. Do you have C1E feature enabled?

That's possible, how to check?

> > > i386 kernel disable lapic on dualcore AMD with C1E support (see
> > > http://lkml.org/lkml/2007/3/29/199). x86_64 kernel do not have this
> > > patch still (it's required for tickless kernel only).
> >
> > Well it is required for non tickless mode as well.
> >
> > > As result, if
> > > you run x86_64 kernel with hrt patch on such computer, the system
> > > will stall during boot on lapic timer calibration.
> >
> > Thanks for the reminder. I have a look into this.
>
> Can you please boot mainline and provide the output of:
>
> # cat /proc/interrupts; sleep 10; cat /proc/interrupts

albercik:~ # cat /proc/interrupts; sleep 10; cat /proc/interrupts
CPU0 CPU1
0: 1159492 0 local-APIC-edge timer
1: 6892 1692 IO-APIC-edge i8042
8: 0 0 IO-APIC-edge rtc
12: 156 110 IO-APIC-edge i8042
14: 29613 11409 IO-APIC-edge ide0
16: 23365 21934 IO-APIC-fasteoi sata_sil, HDA Intel
18: 196 88386 IO-APIC-fasteoi bcm43xx
19: 744874 279433 IO-APIC-fasteoi ohci_hcd:usb1, ohci_hcd:usb2, ehci_hcd:usb3
20: 2 4 IO-APIC-fasteoi ohci1394, yenta, tifm_7xx1, sdhci:slot0
21: 1408 592 IO-APIC-fasteoi acpi
NMI: 0 0 Non-maskable interrupts
LOC: 0 1158220 Local interrupts
RES: 260520 295387 Rescheduling interrupts
CAL: 419 652 function call interrupts
TLB: 864 541 TLB shootdowns
TRM: 0 0 Thermal event interrupts
THR: 0 0 Threshold APIC interrupts
SPU: 0 0 Spurious interrupts
ERR: 13
CPU0 CPU1
0: 1161996 0 local-APIC-edge timer
1: 6893 1692 IO-APIC-edge i8042
8: 0 0 IO-APIC-edge rtc
12: 156 110 IO-APIC-edge i8042
14: 29703 11409 IO-APIC-edge ide0
16: 23393 21934 IO-APIC-fasteoi sata_sil, HDA Intel
18: 196 88490 IO-APIC-fasteoi bcm43xx
19: 747268 279433 IO-APIC-fasteoi ohci_hcd:usb1, ohci_hcd:usb2, ehci_hcd:usb3
20: 2 4 IO-APIC-fasteoi ohci1394, yenta, tifm_7xx1, sdhci:slot0
21: 1412 592 IO-APIC-fasteoi acpi
NMI: 0 0 Non-maskable interrupts
LOC: 0 1160723 Local interrupts
RES: 260567 295433 Rescheduling interrupts
CAL: 419 652 function call interrupts
TLB: 866 543 TLB shootdowns
TRM: 0 0 Thermal event interrupts
THR: 0 0 Threshold APIC interrupts
SPU: 0 0 Spurious interrupts
ERR: 13
albercik:~ #
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

On Tue, 2007-09-25 at 14:20 +0200, Rafael J. Wysocki wrote:
> > > > As i can see from the log, you are booting on computer with dualcore AMD
> > > > processor. Do you have C1E feature enabled?
>
> That's possible, how to check?
>
> > > > i386 kernel disable lapic on dualcore AMD with C1E support (see
> > > > http://lkml.org/lkml/2007/3/29/199). x86_64 kernel do not have this
> > > > patch still (it's required for tickless kernel only).
> > >
> > > Well it is required for non tickless mode as well.
> > >
> > > > As result, if
> > > > you run x86_64 kernel with hrt patch on such computer, the system
> > > > will stall during boot on lapic timer calibration.
> > >
> > > Thanks for the reminder. I have a look into this.
> >
> > Can you please boot mainline and provide the output of:
> >
> > # cat /proc/interrupts; sleep 10; cat /proc/interrupts
>
> albercik:~ # cat /proc/interrupts; sleep 10; cat /proc/interrupts
> CPU0 CPU1
> 0: 1159492 0 local-APIC-edge timer
> LOC: 0 1158220 Local interrupts
>
> 0: 1161996 0 local-APIC-edge timer
> LOC: 0 1160723 Local interrupts

Hmm. That's strange. It looks like the local apic timer is not used, but
x86_64 definitely lacks the above check. Can you please remove/disable
the acpi processor module and recheck ?

tglx




-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

On Tuesday, 25 September 2007 14:28, Thomas Gleixner wrote:
> On Tue, 2007-09-25 at 14:20 +0200, Rafael J. Wysocki wrote:
> > > > > As i can see from the log, you are booting on computer with dualcore AMD
> > > > > processor. Do you have C1E feature enabled?
> >
> > That's possible, how to check?
> >
> > > > > i386 kernel disable lapic on dualcore AMD with C1E support (see
> > > > > http://lkml.org/lkml/2007/3/29/199). x86_64 kernel do not have this
> > > > > patch still (it's required for tickless kernel only).
> > > >
> > > > Well it is required for non tickless mode as well.
> > > >
> > > > > As result, if
> > > > > you run x86_64 kernel with hrt patch on such computer, the system
> > > > > will stall during boot on lapic timer calibration.
> > > >
> > > > Thanks for the reminder. I have a look into this.
> > >
> > > Can you please boot mainline and provide the output of:
> > >
> > > # cat /proc/interrupts; sleep 10; cat /proc/interrupts
> >
> > albercik:~ # cat /proc/interrupts; sleep 10; cat /proc/interrupts
> > CPU0 CPU1
> > 0: 1159492 0 local-APIC-edge timer
> > LOC: 0 1158220 Local interrupts
> >
> > 0: 1161996 0 local-APIC-edge timer
> > LOC: 0 1160723 Local interrupts
>
> Hmm. That's strange. It looks like the local apic timer is not used, but
> x86_64 definitely lacks the above check.

Ouch, sorry. This is from the kernel booted with "noapictimer".

I'll get the correct output in a little while.

Greetings,
Rafael
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

On Tuesday, 25 September 2007 14:52, Rafael J. Wysocki wrote:
> On Tuesday, 25 September 2007 14:28, Thomas Gleixner wrote:
> > On Tue, 2007-09-25 at 14:20 +0200, Rafael J. Wysocki wrote:
> > > > > > As i can see from the log, you are booting on computer with dualcore AMD
> > > > > > processor. Do you have C1E feature enabled?
> > >
> > > That's possible, how to check?
> > >
> > > > > > i386 kernel disable lapic on dualcore AMD with C1E support (see
> > > > > > http://lkml.org/lkml/2007/3/29/199). x86_64 kernel do not have this
> > > > > > patch still (it's required for tickless kernel only).
> > > > >
> > > > > Well it is required for non tickless mode as well.
> > > > >
> > > > > > As result, if
> > > > > > you run x86_64 kernel with hrt patch on such computer, the system
> > > > > > will stall during boot on lapic timer calibration.
> > > > >
> > > > > Thanks for the reminder. I have a look into this.
> > > >
> > > > Can you please boot mainline and provide the output of:
> > > >
> > > > # cat /proc/interrupts; sleep 10; cat /proc/interrupts
> > >
> > > albercik:~ # cat /proc/interrupts; sleep 10; cat /proc/interrupts
> > > CPU0 CPU1
> > > 0: 1159492 0 local-APIC-edge timer
> > > LOC: 0 1158220 Local interrupts
> > >
> > > 0: 1161996 0 local-APIC-edge timer
> > > LOC: 0 1160723 Local interrupts
> >
> > Hmm. That's strange. It looks like the local apic timer is not used, but
> > x86_64 definitely lacks the above check.
>
> Ouch, sorry. This is from the kernel booted with "noapictimer".
>
> I'll get the correct output in a little while.

OK, this one is from -rc7 with no extra command line:

albercik:~ # cat /proc/interrupts; sleep 10; cat /proc/interrupts
CPU0 CPU1
0: 27311 0 local-APIC-edge timer
1: 1 77 IO-APIC-edge i8042
8: 0 0 IO-APIC-edge rtc
12: 0 148 IO-APIC-edge i8042
14: 19 683 IO-APIC-edge ide0
16: 178 12443 IO-APIC-fasteoi sata_sil, HDA Intel
19: 111 15197 IO-APIC-fasteoi ehci_hcd:usb1, ohci_hcd:usb2, ohci_hcd:usb3
20: 0 3 IO-APIC-fasteoi tifm_7xx1, yenta, sdhci:slot0, ohci1394
21: 0 113 IO-APIC-fasteoi acpi
NMI: 0 0
LOC: 27270 27119
ERR: 2
CPU0 CPU1
0: 29815 0 local-APIC-edge timer
1: 1 77 IO-APIC-edge i8042
8: 0 0 IO-APIC-edge rtc
12: 0 148 IO-APIC-edge i8042
14: 20 772 IO-APIC-edge ide0
16: 178 12451 IO-APIC-fasteoi sata_sil, HDA Intel
19: 112 17199 IO-APIC-fasteoi ehci_hcd:usb1, ohci_hcd:usb2, ohci_hcd:usb3
20: 0 3 IO-APIC-fasteoi tifm_7xx1, yenta, sdhci:slot0, ohci1394
21: 0 117 IO-APIC-fasteoi acpi
NMI: 0 0
LOC: 29774 29623
ERR: 2
albercik:~ #

Greetings,
Rafael

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/