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    SubjectRe: 2.6.23-rc4-mm1 and -rc6-mm1: boot failure on HP nx6325, related to clockevents
    Date
    On Tuesday, 25 September 2007 15:17, Thomas Gleixner wrote:
    > On Tue, 2007-09-25 at 15:16 +0200, Rafael J. Wysocki wrote:
    [--snip--]
    >
    > I start to get desperate. Below is a patch, which moves the apic timer
    > disable check after the calibration routine. Can you please apply on top
    > of -hrt and add "noapictimer" to the command line ? Does it boot ?

    2.6.23-rc7 with patch-2.6.23-rc7-hrt1.patch and the patch below applied boots
    with noapictimer and doesn't boot without it.

    Also, attached is the output of

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

    from the current mainline.

    Greetings,
    Rafael


    > Index: linux-2.6.23-rc7/arch/x86_64/kernel/apic.c
    > ===================================================================
    > --- linux-2.6.23-rc7.orig/arch/x86_64/kernel/apic.c 2007-09-24 20:30:00.000000000 +0200
    > +++ linux-2.6.23-rc7/arch/x86_64/kernel/apic.c 2007-09-25 15:05:32.000000000 +0200
    > @@ -927,6 +927,7 @@ static void __init calibrate_APIC_clock(
    >
    > void __init setup_boot_APIC_clock (void)
    > {
    > +#if 0
    > /*
    > * The local apic timer can be disabled via the kernel commandline.
    > * Register the lapic timer as a dummy clock event source on SMP
    > @@ -940,7 +941,7 @@ void __init setup_boot_APIC_clock (void)
    > setup_APIC_timer();
    > return;
    > }
    > -
    > +#endif
    > printk(KERN_INFO "Using local APIC timer interrupts.\n");
    > calibrate_APIC_clock();
    >
    > @@ -949,11 +950,13 @@ void __init setup_boot_APIC_clock (void)
    > * PIT/HPET going. Otherwise register lapic as a dummy
    > * device.
    > */
    > - if (nmi_watchdog != NMI_IO_APIC)
    > + if (!disable_apic_timer && nmi_watchdog != NMI_IO_APIC)
    > lapic_clockevent.features &= ~CLOCK_EVT_FEAT_DUMMY;
    > +#if 0
    > else
    > printk(KERN_WARNING "APIC timer registered as dummy,"
    > " due to nmi_watchdog=1!\n");
    > +#endif
    >
    > setup_APIC_timer();
    > }
    >
    >
    >
    >

    --
    "Premature optimization is the root of all evil." - Donald Knuth
    albercik:~ # cat /proc/interrupts; sleep 10; cat /proc/interrupts
    CPU0 CPU1
    0: 62489 0 local-APIC-edge timer
    1: 3 232 IO-APIC-edge i8042
    8: 0 0 IO-APIC-edge rtc
    12: 1 147 IO-APIC-edge i8042
    14: 15 1947 IO-APIC-edge ide0
    16: 193 14151 IO-APIC-fasteoi sata_sil, HDA Intel
    19: 76 43153 IO-APIC-fasteoi ohci_hcd:usb1, ehci_hcd:usb2, ohci_hcd:usb3
    20: 0 4 IO-APIC-fasteoi ohci1394, tifm_7xx1, yenta, sdhci:slot0
    21: 7 172 IO-APIC-fasteoi acpi
    NMI: 0 0
    LOC: 62454 62082
    ERR: 0
    CPU0 CPU1
    0: 64993 0 local-APIC-edge timer
    1: 3 233 IO-APIC-edge i8042
    8: 0 0 IO-APIC-edge rtc
    12: 1 147 IO-APIC-edge i8042
    14: 15 2037 IO-APIC-edge ide0
    16: 194 14265 IO-APIC-fasteoi sata_sil, HDA Intel
    19: 77 45155 IO-APIC-fasteoi ohci_hcd:usb1, ehci_hcd:usb2, ohci_hcd:usb3
    20: 0 4 IO-APIC-fasteoi ohci1394, tifm_7xx1, yenta, sdhci:slot0
    21: 7 176 IO-APIC-fasteoi acpi
    NMI: 0 0
    LOC: 64958 64586
    ERR: 0
    albercik:~ #
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