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Message-ID: <202311290021.Jo3VlA8D-lkp@intel.com>
Date:   Wed, 29 Nov 2023 00:21:33 +0800
From:   kernel test robot <lkp@...el.com>
To:     cuiyangpei <cuiyangpei@...il.com>, sj@...nel.org,
        akpm@...ux-foundation.org, damon@...ts.linux.dev,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Cc:     llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
        cuiyangpei <cuiyangpei@...omi.com>
Subject: Re: [PATCH 1/2] mm/damon/sysfs: Implement recording feature

Hi cuiyangpei,

kernel test robot noticed the following build errors:

[auto build test ERROR on akpm-mm/mm-everything]

url:    https://github.com/intel-lab-lkp/linux/commits/cuiyangpei/mm-damon-core-add-sysfs-nodes-to-set-last_nr_accesses-weight/20231128-194153
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20231128073440.11894-1-cuiyangpei%40xiaomi.com
patch subject: [PATCH 1/2] mm/damon/sysfs: Implement recording feature
config: i386-buildonly-randconfig-001-20231128 (https://download.01.org/0day-ci/archive/20231129/202311290021.Jo3VlA8D-lkp@intel.com/config)
compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231129/202311290021.Jo3VlA8D-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311290021.Jo3VlA8D-lkp@intel.com/

All errors (new ones prefixed by >>):

   mm/damon/sysfs.c:1415:6: warning: variable 'count' set but not used [-Wunused-but-set-variable]
           int count = 0;
               ^
   In file included from mm/damon/sysfs.c:2139:
>> mm/damon/sysfs-test.h:15:21: error: redefinition of 'nr_damon_targets'
   static unsigned int nr_damon_targets(struct damon_ctx *ctx)
                       ^
   mm/damon/sysfs.c:1411:21: note: previous definition is here
   static unsigned int nr_damon_targets(struct damon_ctx *ctx)
                       ^
   1 warning and 1 error generated.


vim +/nr_damon_targets +15 mm/damon/sysfs-test.h

b8ee5575f763c2 SeongJae Park 2023-10-22  14  
b8ee5575f763c2 SeongJae Park 2023-10-22 @15  static unsigned int nr_damon_targets(struct damon_ctx *ctx)
b8ee5575f763c2 SeongJae Park 2023-10-22  16  {
b8ee5575f763c2 SeongJae Park 2023-10-22  17  	struct damon_target *t;
b8ee5575f763c2 SeongJae Park 2023-10-22  18  	unsigned int nr_targets = 0;
b8ee5575f763c2 SeongJae Park 2023-10-22  19  
b8ee5575f763c2 SeongJae Park 2023-10-22  20  	damon_for_each_target(t, ctx)
b8ee5575f763c2 SeongJae Park 2023-10-22  21  		nr_targets++;
b8ee5575f763c2 SeongJae Park 2023-10-22  22  
b8ee5575f763c2 SeongJae Park 2023-10-22  23  	return nr_targets;
b8ee5575f763c2 SeongJae Park 2023-10-22  24  }
b8ee5575f763c2 SeongJae Park 2023-10-22  25  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

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