linux-kernel - Re: [PATCH 3/6] arm64/vdso: Add time namespace page

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Date:   Wed, 3 Jun 2020 06:04:49 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Andrei Vagin <avagin@...il.com>,
        linux-arm-kernel@...ts.infradead.org,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>
Cc:     kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        linux-kernel@...r.kernel.org,
        Vincenzo Frascino <vincenzo.frascino@....com>,
        Mark Rutland <mark.rutland@....com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Dmitry Safonov <dima@...sta.com>,
        Andrei Vagin <avagin@...il.com>
Subject: Re: [PATCH 3/6] arm64/vdso: Add time namespace page

Hi Andrei,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on soc/for-next]
[also build test WARNING on arm/for-next kvmarm/next v5.7]
[cannot apply to arm64/for-next/core next-20200602]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Andrei-Vagin/arm64-add-the-time-namespace-support/20200603-020504
base:   https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git for-next
config: arm64-randconfig-r004-20200602 (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 2388a096e7865c043e83ece4e26654bd3d1a20d5)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@...el.com>

All warnings (new ones prefixed by >>, old ones prefixed by <<):

>> arch/arm64/kernel/vdso.c:93:19: warning: no previous prototype for function 'arch_get_vdso_data' [-Wmissing-prototypes]
struct vdso_data *arch_get_vdso_data(void *vvar_page)
^
arch/arm64/kernel/vdso.c:93:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
struct vdso_data *arch_get_vdso_data(void *vvar_page)
^
static
1 warning generated.

vim +/arch_get_vdso_data +93 arch/arm64/kernel/vdso.c

    91	
    92	
  > 93	struct vdso_data *arch_get_vdso_data(void *vvar_page)
    94	{
    95		return (struct vdso_data *)(vvar_page);
    96	}
    97	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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