lkml.org 
[lkml]   [2007]   [Jun]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    Date
    From
    SubjectRe: Device hang when offlining a CPU due to IRQ misrouting
    On Tue, Jun 05, 2007 at 04:57:07PM -0700, Darrick J. Wong wrote:
    > On Tue, Jun 05, 2007 at 02:14:51PM -0700, Siddha, Suresh B wrote:
    >
    > > Can you send us your system's dmesg aswell as output of /proc/interrupts?
    >
    > http://sweaglesw.net/~djwong/docs/dmesg
    > http://sweaglesw.net/~djwong/docs/interrupts

    Didn't find anything wrong in that information. Can you try this
    appended debug patch and see if you see this error msg in dmesg, when you
    hit the bug? Thanks.

    diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c
    index d8bfe31..3409c1f 100644
    --- a/arch/x86_64/kernel/io_apic.c
    +++ b/arch/x86_64/kernel/io_apic.c
    @@ -720,10 +720,13 @@ static int assign_irq_vector(int irq, cpumask_t mask)
    {
    int err;
    unsigned long flags;
    + int cpu = smp_processor_id();

    spin_lock_irqsave(&vector_lock, flags);
    err = __assign_irq_vector(irq, mask);
    spin_unlock_irqrestore(&vector_lock, flags);
    + if (err && !cpu_isset(cpu, cpu_online_map))
    + printk("assigning irq to a vector failed : %d\n", err);
    return err;
    }

    -
    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/
    \
     
     \ /
      Last update: 2007-06-06 03:45    [W:0.029 / U:60.760 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site