----- Original Message -----
>
> Hi Dave
>
> I tried the irq command on an ARM vmcore file with a fairly new
> kernel (3.4.0) and it did not work.
>
> crash> irq
> irq: cannot determine number of IRQs
>
> The problem is in arm.c
>
> if (symbol_exists("irq_desc"))
> ARRAY_LENGTH_INIT(machdep->nr_irqs, irq_desc, "irq_desc", NULL,
> 0);
>
> as the symbol irq_desc does not exist any longer. Looking at x86_64.c
> I changed this to
>
> if (symbol_exists("irq_desc"))
> ARRAY_LENGTH_INIT(machdep->nr_irqs, irq_desc, "irq_desc", NULL,
> 0);
> else if (kernel_symbol_exists("nr_irqs"))
> get_symbol_data("nr_irqs", sizeof(unsigned int),
> &machdep->nr_irqs);
>
> and then the command worked as it should again.
>
> Jan
Right -- it was a 2.6.34/CONFIG_SPARSE_IRQ change. Queued for crash-6.1.5.
Thanks,
Dave
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