linux-kernel - Re: [PATCH] mm: remove the redundancy code

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Date:   Tue, 30 Jun 2020 19:52:00 +0800
From:   kernel test robot <lkp@...el.com>
To:     Su Hui <sh_def@....com>, akpm@...ux-foundation.org
Cc:     kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH] mm: remove the redundancy code

Hi Su,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on mmotm/master]

url:    https://github.com/0day-ci/linux/commits/Su-Hui/mm-remove-the-redundancy-code/20200630-013137
base:   git://git.cmpxchg.org/linux-mmotm.git master
config: x86_64-allnoconfig (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project cf1d04484344be52ada8178e41d18fd15a9b880c)
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 x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

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

All warnings (new ones prefixed by >>):

   ^
   include/linux/mm.h:162:2: note: insert 'break;' to avoid fall-throughinclude/linux/signal.h
   case 72:
   ^
   break; :
   include/linux/mm.h:190164:2: warning: unannotated fall-through between switch labels
   case 64::include/linux/mm.h:164:2: note: insert '__attribute__((fallthrough));' to silence this warning
>> case 64:2: warning: unannotated fall-through between switch labels
   case 1: = 0;
   ^
   include/linux/signal.h:190:2: note: insert '__attribute__((fallthrough));' to silence this warning
   case 1: = 0;
   ^
   __attribute__((fallthrough));
   include/linux/signal.h:190:2: note: insert 'break;' to avoid fall-through
   case 1: = 0;
   ^
   break;
   include/linux/signal.h:203:2: warning: unannotated fall-through between switch labels
   case 1: = -1;
   ^

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

Download attachment ".config.gz" of type "application/gzip" (7367 bytes)