linux-kernel - [intel-tdx:guest-unaccepted-memory 6/17] mm/page_alloc.c:1015:47: error: 'NR

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Date:   Tue, 14 Jun 2022 12:24:56 +0800
From:   kernel test robot <lkp@...el.com>
To:     "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [intel-tdx:guest-unaccepted-memory 6/17] mm/page_alloc.c:1015:47:
 error: 'NR_UNACCEPTED' undeclared

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/20220614/202206141254.6aAvKFzZ-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

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/page_alloc.c: In function 'accept_page':
>> mm/page_alloc.c:1015:47: error: 'NR_UNACCEPTED' undeclared (first use in this function)
    1015 |         mod_node_page_state(page_pgdat(page), NR_UNACCEPTED, -(1 << order));
         |                                               ^~~~~~~~~~~~~
   mm/page_alloc.c:1015:47: note: each undeclared identifier is reported only once for each function it appears in
   mm/page_alloc.c: In function '__free_one_page':
   mm/page_alloc.c:1152:57: error: 'NR_UNACCEPTED' undeclared (first use in this function)
    1152 |                 __mod_node_page_state(page_pgdat(page), NR_UNACCEPTED,
         |                                                         ^~~~~~~~~~~~~


vim +/NR_UNACCEPTED +1015 mm/page_alloc.c

  1001	
  1002	/*
  1003	 * Page acceptance can be very slow. Do not call under critical locks.
  1004	 */
  1005	static void accept_page(struct page *page, unsigned int order)
  1006	{
  1007		phys_addr_t start = page_to_phys(page);
  1008		int i;
  1009	
  1010		if (!PageUnaccepted(page))
  1011			return;
  1012	
  1013		accept_memory(start, start + (PAGE_SIZE << order));
  1014		__ClearPageUnaccepted(page);
> 1015		mod_node_page_state(page_pgdat(page), NR_UNACCEPTED, -(1 << order));
  1016	
  1017		/* Assert that there is no PageUnaccepted() on tail pages */
  1018		if (IS_ENABLED(CONFIG_DEBUG_VM)) {
  1019			for (i = 1; i < (1 << order); i++)
  1020				VM_BUG_ON_PAGE(PageUnaccepted(page + i), page + i);
  1021		}
  1022	}
  1023	

-- 
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https://01.org/lkp