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Date:   Tue, 20 Sep 2022 02:54:50 +0800
From:   kernel test robot <lkp@...el.com>
To:     Liu Shixin <liushixin2@...wei.com>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        Linux Memory Management List <linux-mm@...ck.org>,
        linux-kernel@...r.kernel.org, Liu Shixin <liushixin2@...wei.com>,
        Kefeng Wang <wangkefeng.wang@...wei.com>
Subject: Re: [PATCH 5/9] mm/mm_init.c: use hotplug_memory_notifier() directly

Hi Liu,

Thank you for the patch! Yet something to improve:

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

url:    https://github.com/intel-lab-lkp/linux/commits/Liu-Shixin/mm-Use-hotplug_memory_notifier-instead-of-register_hotmemory_notifier/20220919-160043
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
config: arm64-randconfig-r036-20220919 (https://download.01.org/0day-ci/archive/20220920/202209200223.T0pXU4pA-lkp@intel.com/config)
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 791a7ae1ba3efd6bca96338e10ffde557ba83920)
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
        # https://github.com/intel-lab-lkp/linux/commit/33c4e50ed97460db120701f262ae1814509ba982
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Liu-Shixin/mm-Use-hotplug_memory_notifier-instead-of-register_hotmemory_notifier/20220919-160043
        git checkout 33c4e50ed97460db120701f262ae1814509ba982
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

>> mm/mm_init.c:184:26: error: expected identifier or '('
           hotplug_memory_notifier(&mm_compute_batch_notifier, IPC_CALLBACK_PRI);
                                   ^
>> mm/mm_init.c:184:2: error: use of undeclared identifier 'mm_compute_batch_notifier_mem_nb'
           hotplug_memory_notifier(&mm_compute_batch_notifier, IPC_CALLBACK_PRI);
           ^
   include/linux/memory.h:167:28: note: expanded from macro 'hotplug_memory_notifier'
           register_memory_notifier(&fn##_mem_nb);                 \
                                     ^
   <scratch space>:31:1: note: expanded from here
   mm_compute_batch_notifier_mem_nb
   ^
   2 errors generated.


vim +184 mm/mm_init.c

   180	
   181	static int __init mm_compute_batch_init(void)
   182	{
   183		mm_compute_batch(sysctl_overcommit_memory);
 > 184		hotplug_memory_notifier(&mm_compute_batch_notifier, IPC_CALLBACK_PRI);
   185		return 0;
   186	}
   187	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

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