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Groups > linux.kernel > #1673891 > unrolled thread

[PATCH] pci: Add and use PCI_GENERIC_SETUP Kconfig entry

Started byPalmer Dabbelt <palmer@dabbelt.com>
First post2017-06-23 23:50 +0200
Last post2017-06-28 02:20 +0200
Articles 14 — 8 participants

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Contents

  [PATCH] pci:  Add and use PCI_GENERIC_SETUP Kconfig entry Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-23 23:50 +0200
    Re: [PATCH] pci:  Add and use PCI_GENERIC_SETUP Kconfig entry James Hogan <james.hogan@imgtec.com> - 2017-06-24 00:10 +0200
      Re: [PATCH] pci:  Add and use PCI_GENERIC_SETUP Kconfig entry Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-24 00:20 +0200
        [PATCH] pci:  Add and use PCI_GENERIC_SETUP Kconfig entry Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-24 00:20 +0200
          Re: [PATCH] pci: Add and use PCI_GENERIC_SETUP Kconfig entry Richard Henderson <rth@twiddle.net> - 2017-06-24 17:10 +0200
          Re: [PATCH] pci: Add and use PCI_GENERIC_SETUP Kconfig entry kbuild test robot <lkp@intel.com> - 2017-06-26 07:50 +0200
            Re: [PATCH] pci: Add and use PCI_GENERIC_SETUP Kconfig entry Geert Uytterhoeven <geert@linux-m68k.org> - 2017-06-26 09:30 +0200
              [PATCH] pci:  Add and use PCI_GENERIC_SETUP Kconfig entry Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-26 22:30 +0200
                Re: [PATCH] pci:  Add and use PCI_GENERIC_SETUP Kconfig entry Ralf Baechle <ralf@linux-mips.org> - 2017-06-27 12:20 +0200
              Re: [PATCH] pci: Add and use PCI_GENERIC_SETUP Kconfig entry Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-26 22:30 +0200
      Re: [PATCH] pci:  Add and use PCI_GENERIC_SETUP Kconfig entry Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-06-24 11:20 +0200
    Re: [PATCH] pci:  Add and use PCI_GENERIC_SETUP Kconfig entry Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-06-24 11:20 +0200
    Re: [PATCH] pci:  Add and use PCI_GENERIC_SETUP Kconfig entry Bjorn Helgaas <helgaas@kernel.org> - 2017-06-28 01:40 +0200
      Re: [PATCH] pci:  Add and use PCI_GENERIC_SETUP Kconfig entry Palmer Dabbelt <palmer@dabbelt.com> - 2017-06-28 02:20 +0200

#1673891 — [PATCH] pci: Add and use PCI_GENERIC_SETUP Kconfig entry

FromPalmer Dabbelt <palmer@dabbelt.com>
Date2017-06-23 23:50 +0200
Subject[PATCH] pci: Add and use PCI_GENERIC_SETUP Kconfig entry
Message-ID<tVECJ-7uc-1@gated-at.bofh.it>
We wanted to add RISC-V to the list of architectures that used the
generic PCI setup-irq.o inside the Makefile and it was suggested that
instead we define a Kconfig entry and use that.

I've done very minimal testing on this: I just checked to see that
an aarch64 defconfig still build setup-irq.o with the patch applied.
The intention is that this patch doesn't change the behavior of any
build.

Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
---
 arch/alpha/Kconfig     |  1 +
 arch/arc/Kconfig       |  1 +
 arch/arm/Kconfig       |  1 +
 arch/arm64/Kconfig     |  1 +
 arch/m68k/Kconfig      |  1 +
 arch/mips/Kconfig      |  1 +
 arch/sh/Kconfig        |  1 +
 arch/sparc/Kconfig     |  1 +
 arch/tile/Kconfig      |  1 +
 arch/unicore32/Kconfig |  1 +
 drivers/pci/Kconfig    |  3 +++
 drivers/pci/Makefile   | 11 +----------
 12 files changed, 14 insertions(+), 10 deletions(-)

diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 0e49d39ea74a..30f4e711f681 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -26,6 +26,7 @@ config ALPHA
 	select ODD_RT_SIGACTION
 	select OLD_SIGSUSPEND
 	select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
+	select PCI_GENERIC_SETUP
 	help
 	  The Alpha is a 64-bit general-purpose processor designed and
 	  marketed by the Digital Equipment Corporation of blessed memory,
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index a5459698f0ee..dd1f64858118 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -44,6 +44,7 @@ config ARC
 	select HAVE_GENERIC_DMA_COHERENT
 	select HAVE_KERNEL_GZIP
 	select HAVE_KERNEL_LZMA
+	select PCI_GENERIC_SETUP
 
 config MIGHT_HAVE_PCI
 	bool
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 4c1a35f15838..86872246951c 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -96,6 +96,7 @@ config ARM
 	select PERF_USE_VMALLOC
 	select RTC_LIB
 	select SYS_SUPPORTS_APM_EMULATION
+	select PCI_GENERIC_SETUP
 	# Above selects are sorted alphabetically; please add new ones
 	# according to that.  Thanks.
 	help
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index b2024db225a9..6c684d8c8816 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -115,6 +115,7 @@ config ARM64
 	select SPARSE_IRQ
 	select SYSCTL_EXCEPTION_TRACE
 	select THREAD_INFO_IN_TASK
+	select PCI_GENERIC_SETUP
 	help
 	  ARM 64-bit (AArch64) Linux support.
 
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index d140206d5d29..c16214344f1c 100644
--- a/arch/m68k/Kconfig
+++ b/arch/m68k/Kconfig
@@ -22,6 +22,7 @@ config M68K
 	select MODULES_USE_ELF_RELA
 	select OLD_SIGSUSPEND3
 	select OLD_SIGACTION
+	select PCI_GENERIC_SETUP
 
 config RWSEM_GENERIC_SPINLOCK
 	bool
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 2828ecde133d..474a7c710686 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -70,6 +70,7 @@ config MIPS
 	select HAVE_EXIT_THREAD
 	select HAVE_REGS_AND_STACK_ACCESS_API
 	select HAVE_COPY_THREAD_TLS
+	select PCI_GENERIC_SETUP
 
 menu "Machine selection"
 
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index ee086958b2b2..90a98ac526fb 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -48,6 +48,7 @@ config SUPERH
 	select HAVE_ARCH_AUDITSYSCALL
 	select HAVE_FUTEX_CMPXCHG if FUTEX
 	select HAVE_NMI
+	select PCI_GENERIC_SETUP
 	help
 	  The SuperH is a RISC processor targeted for use in embedded systems
 	  and consumer electronics; it was also used in the Sega Dreamcast
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 5639c9fe5b55..24cea64104bd 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -424,6 +424,7 @@ config SPARC_LEON
 	depends on SPARC32
 	select USB_EHCI_BIG_ENDIAN_MMIO
 	select USB_EHCI_BIG_ENDIAN_DESC
+	select PCI_GENERIC_SETUP
 	---help---
 	  If you say Y here if you are running on a SPARC-LEON processor.
 	  The LEON processor is a synthesizable VHDL model of the
diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
index 4583c0320059..6679af85a882 100644
--- a/arch/tile/Kconfig
+++ b/arch/tile/Kconfig
@@ -33,6 +33,7 @@ config TILE
 	select USER_STACKTRACE_SUPPORT
 	select USE_PMC if PERF_EVENTS
 	select VIRT_TO_BUS
+	select PCI_GENERIC_SETUP
 
 config MMU
 	def_bool y
diff --git a/arch/unicore32/Kconfig b/arch/unicore32/Kconfig
index 0769066929c6..162a7d3def0c 100644
--- a/arch/unicore32/Kconfig
+++ b/arch/unicore32/Kconfig
@@ -18,6 +18,7 @@ config UNICORE32
 	select ARCH_WANT_FRAME_POINTERS
 	select GENERIC_IOMAP
 	select MODULES_USE_ELF_REL
+	select PCI_GENERIC_SETUP
 	help
 	  UniCore-32 is 32-bit Instruction Set Architecture,
 	  including a series of low-power-consumption RISC chip
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index e0cacb7b8563..658c9f95ab3f 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -131,6 +131,9 @@ config PCI_HYPERV
           The PCI device frontend driver allows the kernel to import arbitrary
           PCI devices from a PCI backend to support PCI driver domains.
 
+config PCI_GENERIC_SETUP
+	def_bool n
+
 source "drivers/pci/hotplug/Kconfig"
 source "drivers/pci/dwc/Kconfig"
 source "drivers/pci/host/Kconfig"
diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile
index 462c1f5f5546..26f4710c88ec 100644
--- a/drivers/pci/Makefile
+++ b/drivers/pci/Makefile
@@ -31,16 +31,7 @@ obj-$(CONFIG_PCI_IOV) += iov.o
 #
 # Some architectures use the generic PCI setup functions
 #
-obj-$(CONFIG_ALPHA) += setup-irq.o
-obj-$(CONFIG_ARC) += setup-irq.o
-obj-$(CONFIG_ARM) += setup-irq.o
-obj-$(CONFIG_ARM64) += setup-irq.o
-obj-$(CONFIG_UNICORE32) += setup-irq.o
-obj-$(CONFIG_SUPERH) += setup-irq.o
-obj-$(CONFIG_MIPS) += setup-irq.o
-obj-$(CONFIG_TILE) += setup-irq.o
-obj-$(CONFIG_SPARC_LEON) += setup-irq.o
-obj-$(CONFIG_M68K) += setup-irq.o
+obj-$(CONFIG_PCI_GENERIC_SETUP) += setup-irq.o
 
 #
 # ACPI Related PCI FW Functions
-- 
2.13.0

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#1673913

FromJames Hogan <james.hogan@imgtec.com>
Date2017-06-24 00:10 +0200
Message-ID<tVEW6-7RD-15@gated-at.bofh.it>
In reply to#1673891

[Multipart message — attachments visible in raw view] — view raw

On Fri, Jun 23, 2017 at 02:45:38PM -0700, Palmer Dabbelt wrote:
> diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
> index 4c1a35f15838..86872246951c 100644
> --- a/arch/arm/Kconfig
> +++ b/arch/arm/Kconfig
> @@ -96,6 +96,7 @@ config ARM
>  	select PERF_USE_VMALLOC
>  	select RTC_LIB
>  	select SYS_SUPPORTS_APM_EMULATION
> +	select PCI_GENERIC_SETUP
>  	# Above selects are sorted alphabetically; please add new ones
>  	# according to that.  Thanks.

This comment seems to suggest PCI_GENERIC_SETUP should be added a few
lines up to preserve the alphabetical sorting.

> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> index b2024db225a9..6c684d8c8816 100644
> --- a/arch/arm64/Kconfig
> +++ b/arch/arm64/Kconfig
> @@ -115,6 +115,7 @@ config ARM64
>  	select SPARSE_IRQ
>  	select SYSCTL_EXCEPTION_TRACE
>  	select THREAD_INFO_IN_TASK
> +	select PCI_GENERIC_SETUP

Here too.

> diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
> index 4583c0320059..6679af85a882 100644
> --- a/arch/tile/Kconfig
> +++ b/arch/tile/Kconfig
> @@ -33,6 +33,7 @@ config TILE
>  	select USER_STACKTRACE_SUPPORT
>  	select USE_PMC if PERF_EVENTS
>  	select VIRT_TO_BUS
> +	select PCI_GENERIC_SETUP

and here

Otherwise
Reviewed-by: James Hogan <james.hogan@imgtec.com>

Cheers
James

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#1673920

FromPalmer Dabbelt <palmer@dabbelt.com>
Date2017-06-24 00:20 +0200
Message-ID<tVF5M-7VP-31@gated-at.bofh.it>
In reply to#1673913
On Fri, 23 Jun 2017 15:01:04 PDT (-0700), james.hogan@imgtec.com wrote:
> On Fri, Jun 23, 2017 at 02:45:38PM -0700, Palmer Dabbelt wrote:
>> diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
>> index 4c1a35f15838..86872246951c 100644
>> --- a/arch/arm/Kconfig
>> +++ b/arch/arm/Kconfig
>> @@ -96,6 +96,7 @@ config ARM
>>      select PERF_USE_VMALLOC
>>      select RTC_LIB
>>      select SYS_SUPPORTS_APM_EMULATION
>> +    select PCI_GENERIC_SETUP
>>      # Above selects are sorted alphabetically; please add new ones
>>      # according to that.  Thanks.
>
> This comment seems to suggest PCI_GENERIC_SETUP should be added a few
> lines up to preserve the alphabetical sorting.
>
>> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
>> index b2024db225a9..6c684d8c8816 100644
>> --- a/arch/arm64/Kconfig
>> +++ b/arch/arm64/Kconfig
>> @@ -115,6 +115,7 @@ config ARM64
>>      select SPARSE_IRQ
>>      select SYSCTL_EXCEPTION_TRACE
>>      select THREAD_INFO_IN_TASK
>> +    select PCI_GENERIC_SETUP
>
> Here too.
>
>> diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
>> index 4583c0320059..6679af85a882 100644
>> --- a/arch/tile/Kconfig
>> +++ b/arch/tile/Kconfig
>> @@ -33,6 +33,7 @@ config TILE
>>      select USER_STACKTRACE_SUPPORT
>>      select USE_PMC if PERF_EVENTS
>>      select VIRT_TO_BUS
>> +    select PCI_GENERIC_SETUP
>
> and here
>
> Otherwise
> Reviewed-by: James Hogan <james.hogan@imgtec.com>

Whoops -- I guess I was just on autopilot after seeing the first one not be
alphabetized.  A fixed patch is in a threaded message.

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#1673921

FromPalmer Dabbelt <palmer@dabbelt.com>
Date2017-06-24 00:20 +0200
Message-ID<tVF5N-7VP-35@gated-at.bofh.it>
In reply to#1673920
We wanted to add RISC-V to the list of architectures that used the
generic PCI setup-irq.o inside the Makefile and it was suggested that
instead we define a Kconfig entry and use that.

I've done very minimal testing on this: I just checked to see that
an aarch64 defconfig still build setup-irq.o with the patch applied.
The intention is that this patch doesn't change the behavior of any
build.

Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
---
 arch/alpha/Kconfig     |  1 +
 arch/arc/Kconfig       |  1 +
 arch/arm/Kconfig       |  1 +
 arch/arm64/Kconfig     |  1 +
 arch/m68k/Kconfig      |  1 +
 arch/mips/Kconfig      |  1 +
 arch/sh/Kconfig        |  1 +
 arch/sparc/Kconfig     |  1 +
 arch/tile/Kconfig      |  1 +
 arch/unicore32/Kconfig |  1 +
 drivers/pci/Kconfig    |  3 +++
 drivers/pci/Makefile   | 11 +----------
 12 files changed, 14 insertions(+), 10 deletions(-)

diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 0e49d39ea74a..30f4e711f681 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -26,6 +26,7 @@ config ALPHA
 	select ODD_RT_SIGACTION
 	select OLD_SIGSUSPEND
 	select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
+	select PCI_GENERIC_SETUP
 	help
 	  The Alpha is a 64-bit general-purpose processor designed and
 	  marketed by the Digital Equipment Corporation of blessed memory,
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index a5459698f0ee..dd1f64858118 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -44,6 +44,7 @@ config ARC
 	select HAVE_GENERIC_DMA_COHERENT
 	select HAVE_KERNEL_GZIP
 	select HAVE_KERNEL_LZMA
+	select PCI_GENERIC_SETUP
 
 config MIGHT_HAVE_PCI
 	bool
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 4c1a35f15838..4f910c4c37b2 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -93,6 +93,7 @@ config ARM
 	select OF_RESERVED_MEM if OF
 	select OLD_SIGACTION
 	select OLD_SIGSUSPEND3
+	select PCI_GENERIC_SETUP
 	select PERF_USE_VMALLOC
 	select RTC_LIB
 	select SYS_SUPPORTS_APM_EMULATION
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index b2024db225a9..02d4676cb00e 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -110,6 +110,7 @@ config ARM64
 	select OF_EARLY_FLATTREE
 	select OF_RESERVED_MEM
 	select PCI_ECAM if ACPI
+	select PCI_GENERIC_SETUP
 	select POWER_RESET
 	select POWER_SUPPLY
 	select SPARSE_IRQ
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index d140206d5d29..c16214344f1c 100644
--- a/arch/m68k/Kconfig
+++ b/arch/m68k/Kconfig
@@ -22,6 +22,7 @@ config M68K
 	select MODULES_USE_ELF_RELA
 	select OLD_SIGSUSPEND3
 	select OLD_SIGACTION
+	select PCI_GENERIC_SETUP
 
 config RWSEM_GENERIC_SPINLOCK
 	bool
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 2828ecde133d..474a7c710686 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -70,6 +70,7 @@ config MIPS
 	select HAVE_EXIT_THREAD
 	select HAVE_REGS_AND_STACK_ACCESS_API
 	select HAVE_COPY_THREAD_TLS
+	select PCI_GENERIC_SETUP
 
 menu "Machine selection"
 
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index ee086958b2b2..90a98ac526fb 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -48,6 +48,7 @@ config SUPERH
 	select HAVE_ARCH_AUDITSYSCALL
 	select HAVE_FUTEX_CMPXCHG if FUTEX
 	select HAVE_NMI
+	select PCI_GENERIC_SETUP
 	help
 	  The SuperH is a RISC processor targeted for use in embedded systems
 	  and consumer electronics; it was also used in the Sega Dreamcast
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 5639c9fe5b55..24cea64104bd 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -424,6 +424,7 @@ config SPARC_LEON
 	depends on SPARC32
 	select USB_EHCI_BIG_ENDIAN_MMIO
 	select USB_EHCI_BIG_ENDIAN_DESC
+	select PCI_GENERIC_SETUP
 	---help---
 	  If you say Y here if you are running on a SPARC-LEON processor.
 	  The LEON processor is a synthesizable VHDL model of the
diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
index 4583c0320059..451000db8c62 100644
--- a/arch/tile/Kconfig
+++ b/arch/tile/Kconfig
@@ -28,6 +28,7 @@ config TILE
 	select HAVE_PERF_EVENTS
 	select HAVE_SYSCALL_TRACEPOINTS
 	select MODULES_USE_ELF_RELA
+	select PCI_GENERIC_SETUP
 	select SYSCTL_EXCEPTION_TRACE
 	select SYS_HYPERVISOR
 	select USER_STACKTRACE_SUPPORT
diff --git a/arch/unicore32/Kconfig b/arch/unicore32/Kconfig
index 0769066929c6..162a7d3def0c 100644
--- a/arch/unicore32/Kconfig
+++ b/arch/unicore32/Kconfig
@@ -18,6 +18,7 @@ config UNICORE32
 	select ARCH_WANT_FRAME_POINTERS
 	select GENERIC_IOMAP
 	select MODULES_USE_ELF_REL
+	select PCI_GENERIC_SETUP
 	help
 	  UniCore-32 is 32-bit Instruction Set Architecture,
 	  including a series of low-power-consumption RISC chip
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index e0cacb7b8563..658c9f95ab3f 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -131,6 +131,9 @@ config PCI_HYPERV
           The PCI device frontend driver allows the kernel to import arbitrary
           PCI devices from a PCI backend to support PCI driver domains.
 
+config PCI_GENERIC_SETUP
+	def_bool n
+
 source "drivers/pci/hotplug/Kconfig"
 source "drivers/pci/dwc/Kconfig"
 source "drivers/pci/host/Kconfig"
diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile
index 462c1f5f5546..26f4710c88ec 100644
--- a/drivers/pci/Makefile
+++ b/drivers/pci/Makefile
@@ -31,16 +31,7 @@ obj-$(CONFIG_PCI_IOV) += iov.o
 #
 # Some architectures use the generic PCI setup functions
 #
-obj-$(CONFIG_ALPHA) += setup-irq.o
-obj-$(CONFIG_ARC) += setup-irq.o
-obj-$(CONFIG_ARM) += setup-irq.o
-obj-$(CONFIG_ARM64) += setup-irq.o
-obj-$(CONFIG_UNICORE32) += setup-irq.o
-obj-$(CONFIG_SUPERH) += setup-irq.o
-obj-$(CONFIG_MIPS) += setup-irq.o
-obj-$(CONFIG_TILE) += setup-irq.o
-obj-$(CONFIG_SPARC_LEON) += setup-irq.o
-obj-$(CONFIG_M68K) += setup-irq.o
+obj-$(CONFIG_PCI_GENERIC_SETUP) += setup-irq.o
 
 #
 # ACPI Related PCI FW Functions
-- 
2.13.0

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#1674094 — Re: [PATCH] pci: Add and use PCI_GENERIC_SETUP Kconfig entry

FromRichard Henderson <rth@twiddle.net>
Date2017-06-24 17:10 +0200
SubjectRe: [PATCH] pci: Add and use PCI_GENERIC_SETUP Kconfig entry
Message-ID<tVURc-XB-29@gated-at.bofh.it>
In reply to#1673921
On 06/23/2017 03:08 PM, Palmer Dabbelt wrote:
> We wanted to add RISC-V to the list of architectures that used the
> generic PCI setup-irq.o inside the Makefile and it was suggested that
> instead we define a Kconfig entry and use that.
> 
> I've done very minimal testing on this: I just checked to see that
> an aarch64 defconfig still build setup-irq.o with the patch applied.
> The intention is that this patch doesn't change the behavior of any
> build.
> 
> Signed-off-by: Palmer Dabbelt<palmer@dabbelt.com>
> Reviewed-by: James Hogan<james.hogan@imgtec.com>
> ---
>   arch/alpha/Kconfig     |  1 +

Acked-by: Richard Henderson <rth@twiddle.net>


r~

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#1674444 — Re: [PATCH] pci: Add and use PCI_GENERIC_SETUP Kconfig entry

Fromkbuild test robot <lkp@intel.com>
Date2017-06-26 07:50 +0200
SubjectRe: [PATCH] pci: Add and use PCI_GENERIC_SETUP Kconfig entry
Message-ID<tWv4m-6Jc-9@gated-at.bofh.it>
In reply to#1673921

[Multipart message — attachments visible in raw view] — view raw

Hi Palmer,

[auto build test WARNING on linus/master]
[also build test WARNING on v4.12-rc6]
[cannot apply to next-20170623]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Palmer-Dabbelt/pci-Add-and-use-PCI_GENERIC_SETUP-Kconfig-entry/20170626-043558
config: m68k-allnoconfig (attached as .config)
compiler: m68k-linux-gcc (GCC) 4.9.0
reproduce:
        wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=m68k 

All warnings (new ones prefixed by >>):

warning: (M68K) selects PCI_GENERIC_SETUP which has unmet direct dependencies (MMU)

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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#1674493 — Re: [PATCH] pci: Add and use PCI_GENERIC_SETUP Kconfig entry

FromGeert Uytterhoeven <geert@linux-m68k.org>
Date2017-06-26 09:30 +0200
SubjectRe: [PATCH] pci: Add and use PCI_GENERIC_SETUP Kconfig entry
Message-ID<tWwD8-7Mk-3@gated-at.bofh.it>
In reply to#1674444
On Mon, Jun 26, 2017 at 7:39 AM, kbuild test robot <lkp@intel.com> wrote:
> [auto build test WARNING on linus/master]
> [also build test WARNING on v4.12-rc6]
> [cannot apply to next-20170623]
> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
>
> url:    https://github.com/0day-ci/linux/commits/Palmer-Dabbelt/pci-Add-and-use-PCI_GENERIC_SETUP-Kconfig-entry/20170626-043558
> config: m68k-allnoconfig (attached as .config)
> compiler: m68k-linux-gcc (GCC) 4.9.0
> reproduce:
>         wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # save the attached .config to linux build tree
>         make.cross ARCH=m68k
>
> All warnings (new ones prefixed by >>):
>
> warning: (M68K) selects PCI_GENERIC_SETUP which has unmet direct dependencies (MMU)

I can't seem to find this dependency of PCI_GENERIC_SETUP on MMU?

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

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#1675084

FromPalmer Dabbelt <palmer@dabbelt.com>
Date2017-06-26 22:30 +0200
Message-ID<tWINX-6Zu-9@gated-at.bofh.it>
In reply to#1674493
We wanted to add RISC-V to the list of architectures that used the
generic PCI setup-irq.o inside the Makefile and it was suggested that
instead we define a Kconfig entry and use that.

I've done very minimal testing on this: I just checked to see that
an aarch64 defconfig still build setup-irq.o with the patch applied.
The intention is that this patch doesn't change the behavior of any
build.

Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Acked-by: Richard Henderson <rth@twiddle.net>
Acked-by: Vineet Gupta <vgupta@synopsys.com>   [arch/arc]
---
 arch/alpha/Kconfig     |  1 +
 arch/arc/Kconfig       |  1 +
 arch/arm/Kconfig       |  1 +
 arch/arm64/Kconfig     |  1 +
 arch/m68k/Kconfig.bus  |  1 +
 arch/mips/Kconfig      |  1 +
 arch/sh/Kconfig        |  1 +
 arch/sparc/Kconfig     |  1 +
 arch/tile/Kconfig      |  1 +
 arch/unicore32/Kconfig |  1 +
 drivers/pci/Kconfig    |  3 +++
 drivers/pci/Makefile   | 11 +----------
 12 files changed, 14 insertions(+), 10 deletions(-)

diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 0e49d39ea74a..30f4e711f681 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -26,6 +26,7 @@ config ALPHA
 	select ODD_RT_SIGACTION
 	select OLD_SIGSUSPEND
 	select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
+	select PCI_GENERIC_SETUP
 	help
 	  The Alpha is a 64-bit general-purpose processor designed and
 	  marketed by the Digital Equipment Corporation of blessed memory,
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index a5459698f0ee..dd1f64858118 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -44,6 +44,7 @@ config ARC
 	select HAVE_GENERIC_DMA_COHERENT
 	select HAVE_KERNEL_GZIP
 	select HAVE_KERNEL_LZMA
+	select PCI_GENERIC_SETUP
 
 config MIGHT_HAVE_PCI
 	bool
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 4c1a35f15838..4f910c4c37b2 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -93,6 +93,7 @@ config ARM
 	select OF_RESERVED_MEM if OF
 	select OLD_SIGACTION
 	select OLD_SIGSUSPEND3
+	select PCI_GENERIC_SETUP
 	select PERF_USE_VMALLOC
 	select RTC_LIB
 	select SYS_SUPPORTS_APM_EMULATION
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index b2024db225a9..02d4676cb00e 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -110,6 +110,7 @@ config ARM64
 	select OF_EARLY_FLATTREE
 	select OF_RESERVED_MEM
 	select PCI_ECAM if ACPI
+	select PCI_GENERIC_SETUP
 	select POWER_RESET
 	select POWER_SUPPLY
 	select SPARSE_IRQ
diff --git a/arch/m68k/Kconfig.bus b/arch/m68k/Kconfig.bus
index 675b087198f6..bcab783f0487 100644
--- a/arch/m68k/Kconfig.bus
+++ b/arch/m68k/Kconfig.bus
@@ -61,6 +61,7 @@ config GENERIC_ISA_DMA
 config PCI
 	bool "PCI support"
 	depends on M54xx
+	select PCI_GENERIC_SETUP
 	help
 	  Enable the PCI bus. Support for the PCI bus hardware built into the
 	  ColdFire 547x and 548x processors.
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 2828ecde133d..474a7c710686 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -70,6 +70,7 @@ config MIPS
 	select HAVE_EXIT_THREAD
 	select HAVE_REGS_AND_STACK_ACCESS_API
 	select HAVE_COPY_THREAD_TLS
+	select PCI_GENERIC_SETUP
 
 menu "Machine selection"
 
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index ee086958b2b2..90a98ac526fb 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -48,6 +48,7 @@ config SUPERH
 	select HAVE_ARCH_AUDITSYSCALL
 	select HAVE_FUTEX_CMPXCHG if FUTEX
 	select HAVE_NMI
+	select PCI_GENERIC_SETUP
 	help
 	  The SuperH is a RISC processor targeted for use in embedded systems
 	  and consumer electronics; it was also used in the Sega Dreamcast
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 5639c9fe5b55..24cea64104bd 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -424,6 +424,7 @@ config SPARC_LEON
 	depends on SPARC32
 	select USB_EHCI_BIG_ENDIAN_MMIO
 	select USB_EHCI_BIG_ENDIAN_DESC
+	select PCI_GENERIC_SETUP
 	---help---
 	  If you say Y here if you are running on a SPARC-LEON processor.
 	  The LEON processor is a synthesizable VHDL model of the
diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
index 4583c0320059..451000db8c62 100644
--- a/arch/tile/Kconfig
+++ b/arch/tile/Kconfig
@@ -28,6 +28,7 @@ config TILE
 	select HAVE_PERF_EVENTS
 	select HAVE_SYSCALL_TRACEPOINTS
 	select MODULES_USE_ELF_RELA
+	select PCI_GENERIC_SETUP
 	select SYSCTL_EXCEPTION_TRACE
 	select SYS_HYPERVISOR
 	select USER_STACKTRACE_SUPPORT
diff --git a/arch/unicore32/Kconfig b/arch/unicore32/Kconfig
index 0769066929c6..162a7d3def0c 100644
--- a/arch/unicore32/Kconfig
+++ b/arch/unicore32/Kconfig
@@ -18,6 +18,7 @@ config UNICORE32
 	select ARCH_WANT_FRAME_POINTERS
 	select GENERIC_IOMAP
 	select MODULES_USE_ELF_REL
+	select PCI_GENERIC_SETUP
 	help
 	  UniCore-32 is 32-bit Instruction Set Architecture,
 	  including a series of low-power-consumption RISC chip
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index e0cacb7b8563..72a1c4c65926 100644
--- a/drivers/pci/Kconfig
+++ b/drivers/pci/Kconfig
@@ -131,6 +131,9 @@ config PCI_HYPERV
           The PCI device frontend driver allows the kernel to import arbitrary
           PCI devices from a PCI backend to support PCI driver domains.
 
+config PCI_GENERIC_SETUP
+	bool
+
 source "drivers/pci/hotplug/Kconfig"
 source "drivers/pci/dwc/Kconfig"
 source "drivers/pci/host/Kconfig"
diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile
index 462c1f5f5546..26f4710c88ec 100644
--- a/drivers/pci/Makefile
+++ b/drivers/pci/Makefile
@@ -31,16 +31,7 @@ obj-$(CONFIG_PCI_IOV) += iov.o
 #
 # Some architectures use the generic PCI setup functions
 #
-obj-$(CONFIG_ALPHA) += setup-irq.o
-obj-$(CONFIG_ARC) += setup-irq.o
-obj-$(CONFIG_ARM) += setup-irq.o
-obj-$(CONFIG_ARM64) += setup-irq.o
-obj-$(CONFIG_UNICORE32) += setup-irq.o
-obj-$(CONFIG_SUPERH) += setup-irq.o
-obj-$(CONFIG_MIPS) += setup-irq.o
-obj-$(CONFIG_TILE) += setup-irq.o
-obj-$(CONFIG_SPARC_LEON) += setup-irq.o
-obj-$(CONFIG_M68K) += setup-irq.o
+obj-$(CONFIG_PCI_GENERIC_SETUP) += setup-irq.o
 
 #
 # ACPI Related PCI FW Functions
-- 
2.13.0

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#1675506

FromRalf Baechle <ralf@linux-mips.org>
Date2017-06-27 12:20 +0200
Message-ID<tWVLd-7w2-47@gated-at.bofh.it>
In reply to#1675084
On Mon, Jun 26, 2017 at 01:27:56PM -0700, Palmer Dabbelt wrote:

Acked-by: Ralf Baechle <ralf@linux-mips.org>

Thanks,

  Ralf

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#1675086 — Re: [PATCH] pci: Add and use PCI_GENERIC_SETUP Kconfig entry

FromPalmer Dabbelt <palmer@dabbelt.com>
Date2017-06-26 22:30 +0200
SubjectRe: [PATCH] pci: Add and use PCI_GENERIC_SETUP Kconfig entry
Message-ID<tWINX-6Zu-11@gated-at.bofh.it>
In reply to#1674493
>On Mon, Jun 26, 2017 at 7:39 AM, kbuild test robot <lkp@intel.com> wrote:
>> [auto build test WARNING on linus/master]
>> [also build test WARNING on v4.12-rc6]
>> [cannot apply to next-20170623]
>> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
>>
>> url:    https://github.com/0day-ci/linux/commits/Palmer-Dabbelt/pci-Add-and-use-PCI_GENERIC_SETUP-Kconfig-entry/20170626-043558
>> config: m68k-allnoconfig (attached as .config)
>> compiler: m68k-linux-gcc (GCC) 4.9.0
>> reproduce:
>>         wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>>         chmod +x ~/bin/make.cross
>>         # save the attached .config to linux build tree
>>         make.cross ARCH=m68k
>>
>> All warnings (new ones prefixed by >>):
>>
>> warning: (M68K) selects PCI_GENERIC_SETUP which has unmet direct dependencies (MMU)
>
>I can't seem to find this dependency of PCI_GENERIC_SETUP on MMU?

It looks like M68K only includes the PCI Kconfig entry when MMU is enabled.  I
moved the select around a bit and it builds the config that was failing for me.

The updated patch is threaded.

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#1674056

FromRussell King - ARM Linux <linux@armlinux.org.uk>
Date2017-06-24 11:20 +0200
Message-ID<tVPou-5YT-19@gated-at.bofh.it>
In reply to#1673913
On Fri, Jun 23, 2017 at 11:01:04PM +0100, James Hogan wrote:
> On Fri, Jun 23, 2017 at 02:45:38PM -0700, Palmer Dabbelt wrote:
> > diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
> > index 4c1a35f15838..86872246951c 100644
> > --- a/arch/arm/Kconfig
> > +++ b/arch/arm/Kconfig
> > @@ -96,6 +96,7 @@ config ARM
> >  	select PERF_USE_VMALLOC
> >  	select RTC_LIB
> >  	select SYS_SUPPORTS_APM_EMULATION
> > +	select PCI_GENERIC_SETUP
> >  	# Above selects are sorted alphabetically; please add new ones
> >  	# according to that.  Thanks.
> 
> This comment seems to suggest PCI_GENERIC_SETUP should be added a few
> lines up to preserve the alphabetical sorting.

Indeed it should.

-- 
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
according to speedtest.net.

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#1674057

FromRussell King - ARM Linux <linux@armlinux.org.uk>
Date2017-06-24 11:20 +0200
Message-ID<tVPou-5YT-25@gated-at.bofh.it>
In reply to#1673891
On Fri, Jun 23, 2017 at 02:45:38PM -0700, Palmer Dabbelt wrote:
> We wanted to add RISC-V to the list of architectures that used the
> generic PCI setup-irq.o inside the Makefile and it was suggested that
> instead we define a Kconfig entry and use that.
> 
> I've done very minimal testing on this: I just checked to see that
> an aarch64 defconfig still build setup-irq.o with the patch applied.
> The intention is that this patch doesn't change the behavior of any
> build.
> 
> Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>

Looks fine from an ARM point of view, thanks.

Acked-by: Russell King <rmk+kernel@armlinux.org.uk>

> diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
> index e0cacb7b8563..658c9f95ab3f 100644
> --- a/drivers/pci/Kconfig
> +++ b/drivers/pci/Kconfig
> @@ -131,6 +131,9 @@ config PCI_HYPERV
>            The PCI device frontend driver allows the kernel to import arbitrary
>            PCI devices from a PCI backend to support PCI driver domains.
>  
> +config PCI_GENERIC_SETUP
> +	def_bool n

	bool

would be sufficient here - the default is 'n' for all options.

-- 
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
according to speedtest.net.

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#1676262

FromBjorn Helgaas <helgaas@kernel.org>
Date2017-06-28 01:40 +0200
Message-ID<tX8fn-7uy-5@gated-at.bofh.it>
In reply to#1673891
[+cc Lorenzo]

Hi Palmer,

On Fri, Jun 23, 2017 at 02:45:38PM -0700, Palmer Dabbelt wrote:
> We wanted to add RISC-V to the list of architectures that used the
> generic PCI setup-irq.o inside the Makefile and it was suggested that
> instead we define a Kconfig entry and use that.
> 
> I've done very minimal testing on this: I just checked to see that
> an aarch64 defconfig still build setup-irq.o with the patch applied.
> The intention is that this patch doesn't change the behavior of any
> build.
> 
> Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>

Lorenzo Pieralisi's "ARM/ARM64: remove pci_fixup_irqs() usage" series
overlaps with this quite a bit, and includes this patch:

https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git/commit/?h=pci/enumeration&id=5b64036feff4

which makes it so we build setup-irq.o on *all* arches.  Can you check
out the pci/enumeration branch and see whether it accomplishes what
you need?

https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git/log/?h=pci/enumeration

> ---
>  arch/alpha/Kconfig     |  1 +
>  arch/arc/Kconfig       |  1 +
>  arch/arm/Kconfig       |  1 +
>  arch/arm64/Kconfig     |  1 +
>  arch/m68k/Kconfig      |  1 +
>  arch/mips/Kconfig      |  1 +
>  arch/sh/Kconfig        |  1 +
>  arch/sparc/Kconfig     |  1 +
>  arch/tile/Kconfig      |  1 +
>  arch/unicore32/Kconfig |  1 +
>  drivers/pci/Kconfig    |  3 +++
>  drivers/pci/Makefile   | 11 +----------
>  12 files changed, 14 insertions(+), 10 deletions(-)
> 
> diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
> index 0e49d39ea74a..30f4e711f681 100644
> --- a/arch/alpha/Kconfig
> +++ b/arch/alpha/Kconfig
> @@ -26,6 +26,7 @@ config ALPHA
>  	select ODD_RT_SIGACTION
>  	select OLD_SIGSUSPEND
>  	select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
> +	select PCI_GENERIC_SETUP
>  	help
>  	  The Alpha is a 64-bit general-purpose processor designed and
>  	  marketed by the Digital Equipment Corporation of blessed memory,
> diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
> index a5459698f0ee..dd1f64858118 100644
> --- a/arch/arc/Kconfig
> +++ b/arch/arc/Kconfig
> @@ -44,6 +44,7 @@ config ARC
>  	select HAVE_GENERIC_DMA_COHERENT
>  	select HAVE_KERNEL_GZIP
>  	select HAVE_KERNEL_LZMA
> +	select PCI_GENERIC_SETUP
>  
>  config MIGHT_HAVE_PCI
>  	bool
> diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
> index 4c1a35f15838..86872246951c 100644
> --- a/arch/arm/Kconfig
> +++ b/arch/arm/Kconfig
> @@ -96,6 +96,7 @@ config ARM
>  	select PERF_USE_VMALLOC
>  	select RTC_LIB
>  	select SYS_SUPPORTS_APM_EMULATION
> +	select PCI_GENERIC_SETUP
>  	# Above selects are sorted alphabetically; please add new ones
>  	# according to that.  Thanks.
>  	help
> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> index b2024db225a9..6c684d8c8816 100644
> --- a/arch/arm64/Kconfig
> +++ b/arch/arm64/Kconfig
> @@ -115,6 +115,7 @@ config ARM64
>  	select SPARSE_IRQ
>  	select SYSCTL_EXCEPTION_TRACE
>  	select THREAD_INFO_IN_TASK
> +	select PCI_GENERIC_SETUP
>  	help
>  	  ARM 64-bit (AArch64) Linux support.
>  
> diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
> index d140206d5d29..c16214344f1c 100644
> --- a/arch/m68k/Kconfig
> +++ b/arch/m68k/Kconfig
> @@ -22,6 +22,7 @@ config M68K
>  	select MODULES_USE_ELF_RELA
>  	select OLD_SIGSUSPEND3
>  	select OLD_SIGACTION
> +	select PCI_GENERIC_SETUP
>  
>  config RWSEM_GENERIC_SPINLOCK
>  	bool
> diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
> index 2828ecde133d..474a7c710686 100644
> --- a/arch/mips/Kconfig
> +++ b/arch/mips/Kconfig
> @@ -70,6 +70,7 @@ config MIPS
>  	select HAVE_EXIT_THREAD
>  	select HAVE_REGS_AND_STACK_ACCESS_API
>  	select HAVE_COPY_THREAD_TLS
> +	select PCI_GENERIC_SETUP
>  
>  menu "Machine selection"
>  
> diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
> index ee086958b2b2..90a98ac526fb 100644
> --- a/arch/sh/Kconfig
> +++ b/arch/sh/Kconfig
> @@ -48,6 +48,7 @@ config SUPERH
>  	select HAVE_ARCH_AUDITSYSCALL
>  	select HAVE_FUTEX_CMPXCHG if FUTEX
>  	select HAVE_NMI
> +	select PCI_GENERIC_SETUP
>  	help
>  	  The SuperH is a RISC processor targeted for use in embedded systems
>  	  and consumer electronics; it was also used in the Sega Dreamcast
> diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
> index 5639c9fe5b55..24cea64104bd 100644
> --- a/arch/sparc/Kconfig
> +++ b/arch/sparc/Kconfig
> @@ -424,6 +424,7 @@ config SPARC_LEON
>  	depends on SPARC32
>  	select USB_EHCI_BIG_ENDIAN_MMIO
>  	select USB_EHCI_BIG_ENDIAN_DESC
> +	select PCI_GENERIC_SETUP
>  	---help---
>  	  If you say Y here if you are running on a SPARC-LEON processor.
>  	  The LEON processor is a synthesizable VHDL model of the
> diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
> index 4583c0320059..6679af85a882 100644
> --- a/arch/tile/Kconfig
> +++ b/arch/tile/Kconfig
> @@ -33,6 +33,7 @@ config TILE
>  	select USER_STACKTRACE_SUPPORT
>  	select USE_PMC if PERF_EVENTS
>  	select VIRT_TO_BUS
> +	select PCI_GENERIC_SETUP
>  
>  config MMU
>  	def_bool y
> diff --git a/arch/unicore32/Kconfig b/arch/unicore32/Kconfig
> index 0769066929c6..162a7d3def0c 100644
> --- a/arch/unicore32/Kconfig
> +++ b/arch/unicore32/Kconfig
> @@ -18,6 +18,7 @@ config UNICORE32
>  	select ARCH_WANT_FRAME_POINTERS
>  	select GENERIC_IOMAP
>  	select MODULES_USE_ELF_REL
> +	select PCI_GENERIC_SETUP
>  	help
>  	  UniCore-32 is 32-bit Instruction Set Architecture,
>  	  including a series of low-power-consumption RISC chip
> diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
> index e0cacb7b8563..658c9f95ab3f 100644
> --- a/drivers/pci/Kconfig
> +++ b/drivers/pci/Kconfig
> @@ -131,6 +131,9 @@ config PCI_HYPERV
>            The PCI device frontend driver allows the kernel to import arbitrary
>            PCI devices from a PCI backend to support PCI driver domains.
>  
> +config PCI_GENERIC_SETUP
> +	def_bool n
> +
>  source "drivers/pci/hotplug/Kconfig"
>  source "drivers/pci/dwc/Kconfig"
>  source "drivers/pci/host/Kconfig"
> diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile
> index 462c1f5f5546..26f4710c88ec 100644
> --- a/drivers/pci/Makefile
> +++ b/drivers/pci/Makefile
> @@ -31,16 +31,7 @@ obj-$(CONFIG_PCI_IOV) += iov.o
>  #
>  # Some architectures use the generic PCI setup functions
>  #
> -obj-$(CONFIG_ALPHA) += setup-irq.o
> -obj-$(CONFIG_ARC) += setup-irq.o
> -obj-$(CONFIG_ARM) += setup-irq.o
> -obj-$(CONFIG_ARM64) += setup-irq.o
> -obj-$(CONFIG_UNICORE32) += setup-irq.o
> -obj-$(CONFIG_SUPERH) += setup-irq.o
> -obj-$(CONFIG_MIPS) += setup-irq.o
> -obj-$(CONFIG_TILE) += setup-irq.o
> -obj-$(CONFIG_SPARC_LEON) += setup-irq.o
> -obj-$(CONFIG_M68K) += setup-irq.o
> +obj-$(CONFIG_PCI_GENERIC_SETUP) += setup-irq.o
>  
>  #
>  # ACPI Related PCI FW Functions
> -- 
> 2.13.0
> 
> 
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

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#1676285

FromPalmer Dabbelt <palmer@dabbelt.com>
Date2017-06-28 02:20 +0200
Message-ID<tX8S6-7XZ-11@gated-at.bofh.it>
In reply to#1676262
On Tue, 27 Jun 2017 16:37:40 PDT (-0700), helgaas@kernel.org wrote:
> [+cc Lorenzo]
>
> Hi Palmer,
>
> On Fri, Jun 23, 2017 at 02:45:38PM -0700, Palmer Dabbelt wrote:
>> We wanted to add RISC-V to the list of architectures that used the
>> generic PCI setup-irq.o inside the Makefile and it was suggested that
>> instead we define a Kconfig entry and use that.
>>
>> I've done very minimal testing on this: I just checked to see that
>> an aarch64 defconfig still build setup-irq.o with the patch applied.
>> The intention is that this patch doesn't change the behavior of any
>> build.
>>
>> Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
>
> Lorenzo Pieralisi's "ARM/ARM64: remove pci_fixup_irqs() usage" series
> overlaps with this quite a bit, and includes this patch:
>
> https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git/commit/?h=pci/enumeration&id=5b64036feff4
>
> which makes it so we build setup-irq.o on *all* arches.  Can you check
> out the pci/enumeration branch and see whether it accomplishes what
> you need?
>
> https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git/log/?h=pci/enumeration

Great, that's even better for me, as I don't have to go touch a bunch of
different arch code :).  We'll use that instead when it lands.

Thanks!

>
>> ---
>>  arch/alpha/Kconfig     |  1 +
>>  arch/arc/Kconfig       |  1 +
>>  arch/arm/Kconfig       |  1 +
>>  arch/arm64/Kconfig     |  1 +
>>  arch/m68k/Kconfig      |  1 +
>>  arch/mips/Kconfig      |  1 +
>>  arch/sh/Kconfig        |  1 +
>>  arch/sparc/Kconfig     |  1 +
>>  arch/tile/Kconfig      |  1 +
>>  arch/unicore32/Kconfig |  1 +
>>  drivers/pci/Kconfig    |  3 +++
>>  drivers/pci/Makefile   | 11 +----------
>>  12 files changed, 14 insertions(+), 10 deletions(-)
>>
>> diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
>> index 0e49d39ea74a..30f4e711f681 100644
>> --- a/arch/alpha/Kconfig
>> +++ b/arch/alpha/Kconfig
>> @@ -26,6 +26,7 @@ config ALPHA
>>  	select ODD_RT_SIGACTION
>>  	select OLD_SIGSUSPEND
>>  	select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
>> +	select PCI_GENERIC_SETUP
>>  	help
>>  	  The Alpha is a 64-bit general-purpose processor designed and
>>  	  marketed by the Digital Equipment Corporation of blessed memory,
>> diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
>> index a5459698f0ee..dd1f64858118 100644
>> --- a/arch/arc/Kconfig
>> +++ b/arch/arc/Kconfig
>> @@ -44,6 +44,7 @@ config ARC
>>  	select HAVE_GENERIC_DMA_COHERENT
>>  	select HAVE_KERNEL_GZIP
>>  	select HAVE_KERNEL_LZMA
>> +	select PCI_GENERIC_SETUP
>>
>>  config MIGHT_HAVE_PCI
>>  	bool
>> diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
>> index 4c1a35f15838..86872246951c 100644
>> --- a/arch/arm/Kconfig
>> +++ b/arch/arm/Kconfig
>> @@ -96,6 +96,7 @@ config ARM
>>  	select PERF_USE_VMALLOC
>>  	select RTC_LIB
>>  	select SYS_SUPPORTS_APM_EMULATION
>> +	select PCI_GENERIC_SETUP
>>  	# Above selects are sorted alphabetically; please add new ones
>>  	# according to that.  Thanks.
>>  	help
>> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
>> index b2024db225a9..6c684d8c8816 100644
>> --- a/arch/arm64/Kconfig
>> +++ b/arch/arm64/Kconfig
>> @@ -115,6 +115,7 @@ config ARM64
>>  	select SPARSE_IRQ
>>  	select SYSCTL_EXCEPTION_TRACE
>>  	select THREAD_INFO_IN_TASK
>> +	select PCI_GENERIC_SETUP
>>  	help
>>  	  ARM 64-bit (AArch64) Linux support.
>>
>> diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
>> index d140206d5d29..c16214344f1c 100644
>> --- a/arch/m68k/Kconfig
>> +++ b/arch/m68k/Kconfig
>> @@ -22,6 +22,7 @@ config M68K
>>  	select MODULES_USE_ELF_RELA
>>  	select OLD_SIGSUSPEND3
>>  	select OLD_SIGACTION
>> +	select PCI_GENERIC_SETUP
>>
>>  config RWSEM_GENERIC_SPINLOCK
>>  	bool
>> diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
>> index 2828ecde133d..474a7c710686 100644
>> --- a/arch/mips/Kconfig
>> +++ b/arch/mips/Kconfig
>> @@ -70,6 +70,7 @@ config MIPS
>>  	select HAVE_EXIT_THREAD
>>  	select HAVE_REGS_AND_STACK_ACCESS_API
>>  	select HAVE_COPY_THREAD_TLS
>> +	select PCI_GENERIC_SETUP
>>
>>  menu "Machine selection"
>>
>> diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
>> index ee086958b2b2..90a98ac526fb 100644
>> --- a/arch/sh/Kconfig
>> +++ b/arch/sh/Kconfig
>> @@ -48,6 +48,7 @@ config SUPERH
>>  	select HAVE_ARCH_AUDITSYSCALL
>>  	select HAVE_FUTEX_CMPXCHG if FUTEX
>>  	select HAVE_NMI
>> +	select PCI_GENERIC_SETUP
>>  	help
>>  	  The SuperH is a RISC processor targeted for use in embedded systems
>>  	  and consumer electronics; it was also used in the Sega Dreamcast
>> diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
>> index 5639c9fe5b55..24cea64104bd 100644
>> --- a/arch/sparc/Kconfig
>> +++ b/arch/sparc/Kconfig
>> @@ -424,6 +424,7 @@ config SPARC_LEON
>>  	depends on SPARC32
>>  	select USB_EHCI_BIG_ENDIAN_MMIO
>>  	select USB_EHCI_BIG_ENDIAN_DESC
>> +	select PCI_GENERIC_SETUP
>>  	---help---
>>  	  If you say Y here if you are running on a SPARC-LEON processor.
>>  	  The LEON processor is a synthesizable VHDL model of the
>> diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
>> index 4583c0320059..6679af85a882 100644
>> --- a/arch/tile/Kconfig
>> +++ b/arch/tile/Kconfig
>> @@ -33,6 +33,7 @@ config TILE
>>  	select USER_STACKTRACE_SUPPORT
>>  	select USE_PMC if PERF_EVENTS
>>  	select VIRT_TO_BUS
>> +	select PCI_GENERIC_SETUP
>>
>>  config MMU
>>  	def_bool y
>> diff --git a/arch/unicore32/Kconfig b/arch/unicore32/Kconfig
>> index 0769066929c6..162a7d3def0c 100644
>> --- a/arch/unicore32/Kconfig
>> +++ b/arch/unicore32/Kconfig
>> @@ -18,6 +18,7 @@ config UNICORE32
>>  	select ARCH_WANT_FRAME_POINTERS
>>  	select GENERIC_IOMAP
>>  	select MODULES_USE_ELF_REL
>> +	select PCI_GENERIC_SETUP
>>  	help
>>  	  UniCore-32 is 32-bit Instruction Set Architecture,
>>  	  including a series of low-power-consumption RISC chip
>> diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
>> index e0cacb7b8563..658c9f95ab3f 100644
>> --- a/drivers/pci/Kconfig
>> +++ b/drivers/pci/Kconfig
>> @@ -131,6 +131,9 @@ config PCI_HYPERV
>>            The PCI device frontend driver allows the kernel to import arbitrary
>>            PCI devices from a PCI backend to support PCI driver domains.
>>
>> +config PCI_GENERIC_SETUP
>> +	def_bool n
>> +
>>  source "drivers/pci/hotplug/Kconfig"
>>  source "drivers/pci/dwc/Kconfig"
>>  source "drivers/pci/host/Kconfig"
>> diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile
>> index 462c1f5f5546..26f4710c88ec 100644
>> --- a/drivers/pci/Makefile
>> +++ b/drivers/pci/Makefile
>> @@ -31,16 +31,7 @@ obj-$(CONFIG_PCI_IOV) += iov.o
>>  #
>>  # Some architectures use the generic PCI setup functions
>>  #
>> -obj-$(CONFIG_ALPHA) += setup-irq.o
>> -obj-$(CONFIG_ARC) += setup-irq.o
>> -obj-$(CONFIG_ARM) += setup-irq.o
>> -obj-$(CONFIG_ARM64) += setup-irq.o
>> -obj-$(CONFIG_UNICORE32) += setup-irq.o
>> -obj-$(CONFIG_SUPERH) += setup-irq.o
>> -obj-$(CONFIG_MIPS) += setup-irq.o
>> -obj-$(CONFIG_TILE) += setup-irq.o
>> -obj-$(CONFIG_SPARC_LEON) += setup-irq.o
>> -obj-$(CONFIG_M68K) += setup-irq.o
>> +obj-$(CONFIG_PCI_GENERIC_SETUP) += setup-irq.o
>>
>>  #
>>  # ACPI Related PCI FW Functions
>> --
>> 2.13.0
>>
>>
>> _______________________________________________
>> linux-arm-kernel mailing list
>> linux-arm-kernel@lists.infradead.org
>> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

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