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Message-Id: <20140508121706.E0591C40D85@trevor.secretlab.ca> Date: Thu, 08 May 2014 13:17:06 +0100 From: Grant Likely <grant.likely@...retlab.ca> To: Thomas Gleixner <tglx@...utronix.de>, LKML <linux-kernel@...r.kernel.org> Cc: Ingo Molnar <mingo@...e.hu>, Peter Anvin <hpa@...or.com>, Tony Luck <tony.luck@...el.com>, Peter Zijlstra <peterz@...radead.org> Subject: Re: [patch 00/32] genirq: Another round of tree wide cleanups On Wed, 07 May 2014 15:44:03 -0000, Thomas Gleixner <tglx@...utronix.de> wrote: > This cleanup series addresses a few histerical leftovers: > > 1) irq_reserve_irq() > > The remaining callsites are pointless except s390, but we have a > better way to protect the lower interrupt space there. > > It's gone for good and it will never come back. Use irq domains, if > you want hot pluggable irq chips. > > 2) create/destroy_irq and their variants > > Designed in different circles of hell we have an incompatible zoo > of those. > > Three different implementations with different semantics vs. the > return values. Two use cases which are just reusing the global > namespace. And they come along with four different flavours of > dynamic irq allocation. > > I created a core implementation for that and put it under > GENERIC_IRQ_LEGACY_ALLOC_HWIRQ to make clear that this is not for > new code. That implementation is used by x86 and tile. I gave up on > converting ia64 over, so I moved the create/destroy_irq prototypes > into ia64 headers and provided a wrapper for the shared dmar driver. > > The core implementation is a very basic allocator and that's > deliberately so. I don't want more users and every more complex > than that wants to use irq domains. > > 3) dynamic_irq_init/cleanup > > Another leftover from the past. By moving tile and iop13xx to > sparse irq there is only ia64 left. I simplified the code and made > this available only under a legacy config option to avoid that more > people think they need this. > > Full diffstat below. For the whole series: Reviewed-by: Grant Likely <grant.likely@...aro.org> It all looks sane and a good cleanup. I've not done any testing though. g. > > Thanks, > > tglx > --- > arch/arm/Kconfig | 1 > arch/arm/mach-iop13xx/include/mach/irqs.h | 2 > arch/arm/mach-iop13xx/include/mach/time.h | 3 > arch/arm/mach-iop13xx/iq81340mc.c | 1 > arch/arm/mach-iop13xx/iq81340sc.c | 1 > arch/arm/mach-iop13xx/msi.c | 51 ++--------- > arch/arm/mach-iop13xx/setup.c | 1 > arch/arm/mach-iop13xx/tpmi.c | 1 > arch/ia64/Kconfig | 1 > arch/ia64/include/asm/hw_irq.h | 1 > arch/ia64/include/asm/irq.h | 3 > arch/ia64/include/asm/irq_remapping.h | 2 > arch/ia64/kernel/iosapic.c | 2 > arch/ia64/kernel/irq_ia64.c | 15 --- > arch/mips/pci/msi-xlp.c | 10 -- > arch/mips/pci/pci-xlr.c | 10 -- > arch/s390/kernel/irq.c | 5 - > arch/s390/pci/pci.c | 6 - > arch/tile/Kconfig | 2 > arch/tile/include/asm/irq.h | 6 - > arch/tile/kernel/irq.c | 40 --------- > arch/tile/kernel/pci_gx.c | 17 +-- > arch/x86/Kconfig | 1 > arch/x86/include/asm/io_apic.h | 2 > arch/x86/include/asm/irq_remapping.h | 3 > arch/x86/kernel/apic/io_apic.c | 130 +++++------------------------- > arch/x86/kernel/hpet.c | 5 - > arch/x86/platform/uv/uv_irq.c | 10 -- > drivers/iommu/dmar.c | 8 - > drivers/iommu/irq_remapping.c | 12 +- > drivers/net/ethernet/tile/tilegx.c | 6 - > drivers/pci/htirq.c | 13 --- > drivers/sh/intc/core.c | 6 - > drivers/tty/hvc/hvc_tile.c | 8 - > drivers/tty/serial/tilegx.c | 8 - > drivers/usb/host/ehci-tilegx.c | 8 - > drivers/usb/host/ohci-tilegx.c | 8 - > drivers/xen/events/events_base.c | 17 --- > include/linux/irq.h | 38 +++----- > kernel/irq/Kconfig | 9 ++ > kernel/irq/chip.c | 5 - > kernel/irq/internals.h | 6 + > kernel/irq/irqdesc.c | 95 ++++++++++++++------- > 43 files changed, 216 insertions(+), 363 deletions(-) > > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@...r.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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