Re: linux-next: Tree for July 22 (uml)

Randy Dunlap
2011-07-22T20:15:34Z

On Fri, 22 Jul 2011 20:55:34 +0200 Richard Weinberger wrote:

> Am Freitag 22 Juli 2011, 17:53:46 schrieben Sie:
> > On Fri, 22 Jul 2011 16:42:37 +1000 Stephen Rothwell wrote:
> > > Hi all,
> >
> > uml build on i386 fails with:
> >
> > arch/um/sys-i386/built-in.o: In function `call_rwsem_down_read_failed':
> > linux-next-20110722/arch/um/sys-i386/../../x86/lib/rwsem.S:93: undefined
> > reference to `rwsem_down_read_failed' arch/um/sys-i386/built-in.o: In
> > function `call_rwsem_down_write_failed':
> > linux-next-20110722/arch/um/sys-i386/../../x86/lib/rwsem.S:105: undefined
> > reference to `rwsem_down_write_failed' arch/um/sys-i386/built-in.o: In
> > function `call_rwsem_wake':
> > linux-next-20110722/arch/um/sys-i386/../../x86/lib/rwsem.S:118: undefined
> > reference to `rwsem_wake' arch/um/sys-i386/built-in.o: In function
> > `call_rwsem_downgrade_wake':
> > linux-next-20110722/arch/um/sys-i386/../../x86/lib/rwsem.S:130: undefined
> > reference to `rwsem_downgrade_wake'
> >
>
> Jan,
>
> "x86: Unify rwsem assembly implementation" broke the UML build on i386.
> Please compile test you changes or CC me when you are touch something in arch/um/.
>
> make ARCH=um SUBARCH=i386
> and
> make ARCH=um SUBARCH=x86_64
>
> does not hurt. :-)

Ack.

> Thanks,
> //richard
>
> ---
>
> From b9ec24beb55276d74fdf4f9f9607c69fc8662b72 Mon Sep 17 00:00:00 2001
> From: Richard Weinberger <richard@nod.at>
> Date: Fri, 22 Jul 2011 20:46:32 +0200
> Subject: [PATCH] um: Make rwsem.S depend on CONFIG_RWSEM_XCHGADD_ALGORITHM
>
> rwsem.S can only be used with CONFIG_RWSEM_XCHGADD_ALGORITHM.
> This unbreaks the UML build on i386.
>
> Signed-off-by: Richard Weinberger <richard@nod.at>
> Reported-by: Randy Dunlap <rdunlap@xenotime.net>

Acked-by: Randy Dunlap <rdunlap@xenotime.net>

Thanks.

> ---
> arch/um/sys-i386/Makefile | 3 ++-
> 1 files changed, 2 insertions(+), 1 deletions(-)
>
> diff --git a/arch/um/sys-i386/Makefile b/arch/um/sys-i386/Makefile
> index 15587ed..87b659d 100644
> --- a/arch/um/sys-i386/Makefile
> +++ b/arch/um/sys-i386/Makefile
> @@ -8,7 +8,8 @@ obj-y = bug.o bugs.o checksum.o delay.o fault.o ksyms.o ldt.o ptrace.o \
>
> obj-$(CONFIG_BINFMT_ELF) += elfcore.o
>
> -subarch-obj-y = lib/rwsem.o lib/string_32.o
> +subarch-obj-y = lib/string_32.o
> +subarch-obj-$(CONFIG_RWSEM_XCHGADD_ALGORITHM) += lib/rwsem.o
> subarch-obj-$(CONFIG_HIGHMEM) += mm/highmem_32.o
> subarch-obj-$(CONFIG_MODULES) += kernel/module.o
>
> --

---
~Randy
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