[RFC Part3 v1 00/28] Enable hierarchy irqdomian on x86 platforms

From: Jiang Liu
Date: Fri Sep 26 2014 - 10:55:35 EST

This is the last part to enable support of hierarchy domain on x86

It first converts IOAPIC to support hierarchy irqdomain, then cleans
up all unused code and interfaces. It also introduces a kernel boot
parameter to configure CPU vector allocation policies.

It's based on my previous patch set at:
And you may access it at:
https://github.com/jiangliu/linux.git irqdomain/p3v1

It has been tested on Intel 64-bit server and 32-bit laptop. It also
passes Fengguang's 0day tests. Helps are welcomed for testing:
1) Intel MID platform
2) Intel CE or OLPC platforms

Patch 1-6 convert IOAPIC to support hierarchy irqdomain.
Patch 7-16,22 clean up unused code, x86_io_apic_ops and header files.
Patch 17-20 simplify struct irq_cfg.
Patch 21, 23-26 clean up code and interfaces further.
Patch 27-28 introduces a mechanism to configure CPU vector allocation

Jiang Liu (28):
x86, irq: Kill unused setup_timer_IRQ0_pin()
x86, irq: Prepare IOAPIC interfaces to support hierarchy irqdomain
x86, irq: Implement callbacks to enable hierarchy irqdomain on
x86, irq: Refine the way to allocate irq_cfg for legacy IRQs
x86, irq: Convert IOAPIC to use hierarchy irqdomain interfaces
x86, irq: Kill unused old IOAPIC irqdomain interfaces
x86, irq: Kill x86_io_apic_ops.print_entries and related interfaces
x86, irq: Kill x86_io_apic_ops.setup_entry and related interfaces
x86, irq: Kill x86_io_apic_ops.set_affinity and related interfaces
x86, irq: Kill x86_io_apic_ops.eoi_ioapic_pin and related interfaces
x86: Clean up unused forward declarations in x86_init.h
x86: irq_remapping: Clean up unsued code
iommu/vt-d: Clean up unsued code
iommu/amd: Clean up unsued code
x86: irq_remapping: Clean up unused interfaces
x86, irq: Kill irq_cfg.irq_remapped
iommu/vt-d: Move struct irq_2_iommu into intel_irq_remapping.c
iommu/amd: Move struct irq_2_irte into amd_iommu.c
x86, irq: Move irq_cfg.irq_2_pin into io_apic.c
x86, irq: Kill struct io_apic_irq_attr
x86, irq: Kill x86_io_apic_ops.write and x86_io_apic_ops.modify
x86, irq: Clean up io_apic.h
x86, irq: Kill unused alloc_irq_and_cfg_at()
x86, irq: Change functions only used in vector.c as static
x86, irq: Kill function apic_set_affinity()
x86, irq: Introduce mechanism to support different vector allocation
x86, irq: Add kernel parameter vector_alloc to set CPU vector
allocation policy

Documentation/kernel-parameters.txt | 6 +
arch/x86/Kconfig | 1 -
arch/x86/include/asm/hw_irq.h | 50 +-
arch/x86/include/asm/io_apic.h | 81 +-
arch/x86/include/asm/irq_remapping.h | 36 -
arch/x86/include/asm/x86_init.h | 16 -
arch/x86/kernel/acpi/boot.c | 19 +-
arch/x86/kernel/apic/io_apic.c | 926 +++++++++++---------
arch/x86/kernel/apic/vector.c | 226 ++---
arch/x86/kernel/devicetree.c | 39 +-
arch/x86/kernel/mpparse.c | 6 +-
arch/x86/kernel/x86_init.c | 6 -
arch/x86/pci/intel_mid_pci.c | 6 +-
.../platform/intel-mid/device_libs/platform_wdt.c | 5 +-
arch/x86/platform/intel-mid/intel-mid.c | 2 +
arch/x86/platform/intel-mid/sfi.c | 6 +-
arch/x86/platform/sfi/sfi.c | 5 +-
drivers/iommu/amd_iommu.c | 150 +---
drivers/iommu/intel_irq_remapping.c | 202 +----
drivers/iommu/irq_remapping.c | 84 --
drivers/iommu/irq_remapping.h | 16 -
21 files changed, 709 insertions(+), 1179 deletions(-)


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