[PATCH 00/43] dyn_array/nr_irqs/sparse_irq support v7

[Yinghai Lu]

Please check dyn_array support for x86
v3: split changing to nr_irqs to small patches
   fix checkpatch error
   reorder the patch sequence to make dyn_array support go at first
       so could use that with arrays other than NR_IRQS

v4: add CONFIG_HAVE_SPARSE_IRQ with list to use condensed irq_desc array
   so could use 32 init, and init more if needed.
   x86 32bit: have CONFIG_HAVE_DYN_ARRAY
   x86 64bit: have CONFIG_HAVE_DYN_ARRAY and CONFIG_HAVE_SPARSE_IRQ

v5: apply alan cox patch with NR_IRQS for serial at first
   seperate irq_descX with irq_descX_free, so could use -1U as valid irq
   expand /proc/interrupts to process > nr_irqs
   hook irq_2_iommu to irq_desc
   more other arch irq_desc[] to irq_desc(), and kstat_cpu().irqs[] to kstat_irqs_cpu..

v6: fixed checkpatch errors.., only left warning about lines > 80 chars.
   put Eric's patch about NR_IRQS at first

v7: according to Eric, need to take care of that some arch doesn't use generic_hardirqs
   reorder some sequence, squash some patches into previous to make patchset bisectable.

based on tip/master

to do:
   so dyn irq_desc is done, and ready to:
   make create_irq to get irq according to bus/dev/func/vector

Thanks

Yinghai Lu

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