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SubjectRe: Linux 5.16-rc1
On Mon, Nov 15, 2021 at 9:07 AM Guenter Roeck <linux@roeck-us.net> wrote:
>
> parisc:allmodconfig: Lots of build failures in arch/parisc/include/asm/jump_label.h.
> Not fixed in -next. The problem seens to be related to the thread_info changes,
> or at least bisect points to commit 01463374c50e ("Merge tag 'cpu-to-thread_info-v5.16-rc1'
> of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux").

I don't think they are related to the thread_info changes except very
incidentally.

From the errors ("expected ':' before '__stringify'") it looks like
__stringify() isn't defined there, and I do think that header file
should include <linux/compiler.h> to get it.

I don't actually see how that merge commit you bisected to could
possibly matter (the diff doesn't show any header file include
changes, or any parisc ones), but I suspect you might have bisected to
it because we did end up having actual thread_info errors on parsic
that weren't fixed until commit 2a2e8202c7a1 ("parisc: move CPU field
back into thread_info").

So I suspect the parisc build problems started with thread_info issues
at that merge commit you pinpoint, and then by commit 2a2e8202c7a1
some other header file simplification had exposed that "no
__stringify()" thing).

Helge - apparently from allmodconfig and others, we have:

arch/parisc/include/asm/jump_label.h: In function 'arch_static_branch':
arch/parisc/include/asm/jump_label.h:18:18: error: expected ':'
before '__stringify'

and others, which does look like just a missing header file (that was
presumably previously implicitly included earlier, and now the
implicit include is gone).

Linus

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