2024-04-03 07:53:46

by Naresh Kamboju

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Subject: sh4: parisc: asm/cmpxchg.h:60:24: error: implicit declaration of function 'cmpxchg_emu_u8' [-Werror=implicit-function-declaration]

The parisc and sh defconfig builds failed due to following build warnings
and errors on Linux next-20240402.

Reported-by: Linux Kernel Functional Testing <[email protected]>

parisc:
build:
* gcc-11-tinyconfig - Failed
* gcc-11-allnoconfig - Failed
* gcc-11-defconfig - Failed

sh:
build:
* gcc-11-defconfig - Failed
* gcc-11-dreamcast_defconfig - Failed
* gcc-11-tinyconfig - Failed
* gcc-11-shx3_defconfig - Failed
* gcc-11-allnoconfig - Failed

In file included from arch/sh/include/asm/atomic.h:19,
from include/linux/atomic.h:7,
from include/asm-generic/bitops/lock.h:5,
from arch/sh/include/asm/bitops.h:63,
from include/linux/bitops.h:70,
from include/linux/log2.h:12,
from kernel/bounds.c:13:
arch/sh/include/asm/cmpxchg.h: In function '__cmpxchg':
arch/sh/include/asm/cmpxchg.h:60:24: error: implicit declaration of
function 'cmpxchg_emu_u8' [-Werror=implicit-function-declaration]
60 | return cmpxchg_emu_u8((volatile u8 *)ptr, old, new);
| ^~~~~~~~~~~~~~
arch/sh/include/asm/cmpxchg.h:62:24: error: implicit declaration of
function 'cmpxchg_emu_u16' [-Werror=implicit-function-declaration]
62 | return cmpxchg_emu_u16((volatile u16 *)ptr, old, new);
| ^~~~~~~~~~~~~~~
cc1: some warnings being treated as errors

Steps to reproduce:
------
# tuxmake --runtime podman --target-arch sh --toolchain gcc-11
--kconfig defconfig

Links:
- https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20240402/testrun/23264271/suite/build/test/gcc-11-defconfig/details/
- https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20240402/testrun/23264273/suite/build/test/gcc-11-defconfig/details/

--
Linaro LKFT
https://lkft.linaro.org


2024-04-03 20:52:31

by Andrew Morton

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Subject: Re: sh4: parisc: asm/cmpxchg.h:60:24: error: implicit declaration of function 'cmpxchg_emu_u8' [-Werror=implicit-function-declaration]

On Wed, 3 Apr 2024 13:23:23 +0530 Naresh Kamboju <[email protected]> wrote:

> The parisc and sh defconfig builds failed due to following build warnings
> and errors on Linux next-20240402.
>
> Reported-by: Linux Kernel Functional Testing <[email protected]>
>
> parisc:
> build:
> * gcc-11-tinyconfig - Failed
> * gcc-11-allnoconfig - Failed
> * gcc-11-defconfig - Failed
>
> sh:
> build:
> * gcc-11-defconfig - Failed
> * gcc-11-dreamcast_defconfig - Failed
> * gcc-11-tinyconfig - Failed
> * gcc-11-shx3_defconfig - Failed
> * gcc-11-allnoconfig - Failed

Is this a new failure? If so, can we please identify a suitable Fixes: target?

2024-04-03 21:02:40

by Paul E. McKenney

[permalink] [raw]
Subject: Re: sh4: parisc: asm/cmpxchg.h:60:24: error: implicit declaration of function 'cmpxchg_emu_u8' [-Werror=implicit-function-declaration]

On Wed, Apr 03, 2024 at 01:52:05PM -0700, Andrew Morton wrote:
> On Wed, 3 Apr 2024 13:23:23 +0530 Naresh Kamboju <[email protected]> wrote:
>
> > The parisc and sh defconfig builds failed due to following build warnings
> > and errors on Linux next-20240402.
> >
> > Reported-by: Linux Kernel Functional Testing <[email protected]>
> >
> > parisc:
> > build:
> > * gcc-11-tinyconfig - Failed
> > * gcc-11-allnoconfig - Failed
> > * gcc-11-defconfig - Failed
> >
> > sh:
> > build:
> > * gcc-11-defconfig - Failed
> > * gcc-11-dreamcast_defconfig - Failed
> > * gcc-11-tinyconfig - Failed
> > * gcc-11-shx3_defconfig - Failed
> > * gcc-11-allnoconfig - Failed
>
> Is this a new failure? If so, can we please identify a suitable Fixes: target?

This one is already fixed, but I am pulling the offending commits out
of -next for a few days in order to fix some additional casting issues
identified by kernel test robot.

Apologies for the hassle!

Thanx, Paul