Re: linux-next: build failure in Linus' tree

[Paul Mundt]

On Thu, Jun 14, 2012 at 11:47:22AM +1000, Stephen Rothwell wrote:
> Hi Linus,
> 
> While building Linus' tree, today's linux-next build (powerpc
> ppc64_defconfig) failed like this:
> 
> In file included from include/asm-generic/bug.h:5:0,
>                  from arch/powerpc/include/asm/bug.h:127,
>                  from arch/powerpc/kernel/head_64.S:31:
> include/linux/kernel.h:44:0: warning: "ALIGN" redefined [enabled by default]
> include/linux/linkage.h:57:0: note: this is the location of the previous definition
> include/linux/sysinfo.h: Assembler messages:
> include/linux/sysinfo.h:7: Error: Unrecognized opcode: `struct'
> include/linux/sysinfo.h:8: Error: Unrecognized opcode: `__kernel_long_t'
> 
> And it went downhill from there :-(
> 
> Caused by commit 3777808873b0 ("bug.h: need linux/kernel.h for
> TAINT_WARN") which, unfortunately never made it into linux-next.
> 
> I have reverted that commit for today (which presumably means that sh
> builds will be broken again).

I'm still unsure as to the best way to fix this, and there was no
response to the original mail I posted about it either:

http://marc.info/?l=linux-kernel&m=133879579014853&w=2

I'll fetch a powerpc cross compiler and see if I can figure out what went
wrong.

We can always bite the bullet and stuff it in the sh thread_info.h, but
that's papering around the issue, and any other TIF_RESTORE_SIGMASK &&
!HAVE_SET_RESTORE_SIGMASK generic bug user will have to use the same
hack.
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