[intel-tdx:guest-unaccepted-memory 6/17] fs/proc/meminfo.c:156:5: warning: "CONFIG_UNACCEPTED_MEMORY" is not defined, evaluates to 0

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/intel/tdx.git guest-unaccepted-memory
head:   7a902d05477ac272558ba731d903c6b0c9d72903
commit: e4fbeb9c5cb4aa02fcd17388eef920f389fc83ea [6/17] mm: Report unaccepted memory in meminfo
config: um-i386_defconfig (https://download.01.org/0day-ci/archive/20220614/202206141126.wBfKM00X-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-3) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/intel/tdx/commit/e4fbeb9c5cb4aa02fcd17388eef920f389fc83ea
        git remote add intel-tdx https://github.com/intel/tdx.git
        git fetch --no-tags intel-tdx guest-unaccepted-memory
        git checkout e4fbeb9c5cb4aa02fcd17388eef920f389fc83ea
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=um SUBARCH=i386 SHELL=/bin/bash fs/proc/ mm/

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

All warnings (new ones prefixed by >>):

   fs/proc/meminfo.c:22:28: warning: no previous prototype for 'arch_report_meminfo' [-Wmissing-prototypes]
      22 | void __attribute__((weak)) arch_report_meminfo(struct seq_file *m)
         |                            ^~~~~~~~~~~~~~~~~~~
   fs/proc/meminfo.c: In function 'meminfo_proc_show':
>> fs/proc/meminfo.c:156:5: warning: "CONFIG_UNACCEPTED_MEMORY" is not defined, evaluates to 0 [-Wundef]
     156 | #if CONFIG_UNACCEPTED_MEMORY
         |     ^~~~~~~~~~~~~~~~~~~~~~~~


vim +/CONFIG_UNACCEPTED_MEMORY +156 fs/proc/meminfo.c

   155	
 > 156	#if CONFIG_UNACCEPTED_MEMORY
   157		show_val_kb(m, "UnacceptedPages:",
   158			    global_node_page_state(NR_UNACCEPTED));
   159	#endif
   160	
   161		hugetlb_report_meminfo(m);
   162	
   163		arch_report_meminfo(m);
   164	
   165		return 0;
   166	}
   167	

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