Hi Anshuman,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on powerpc/next]
[also build test ERROR on linus/master v5.12-rc1 next-20210301]
[cannot apply to hnaz-linux-mm/master]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    
https://github.com/0day-ci/linux/commits/Anshuman-Khandual/mm-Generalize-HUGETLB_PAGE_SIZE_VARIABLE/20210301-135205
base:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
config: ia64-randconfig-r003-20210301 (attached as .config)
compiler: ia64-linux-gcc (GCC) 9.3.0
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
        # 
https://github.com/0day-ci/linux/commit/fe78e3508e5221ac13aa288136e2a6506211be68
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review 
Anshuman-Khandual/mm-Generalize-HUGETLB_PAGE_SIZE_VARIABLE/20210301-135205
        git checkout fe78e3508e5221ac13aa288136e2a6506211be68
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross 
ARCH=ia64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <[email protected]>

All errors (new ones prefixed by >>):

   In file included from arch/ia64/include/asm/pgtable.h:154,
                    from include/linux/pgtable.h:6,
                    from include/linux/mm.h:33,
                    from mm/page_alloc.c:19:
   arch/ia64/include/asm/mmu_context.h: In function 'reload_context':
   arch/ia64/include/asm/mmu_context.h:127:41: warning: variable 'old_rr4' set 
but not used [-Wunused-but-set-variable]
     127 |  unsigned long rr0, rr1, rr2, rr3, rr4, old_rr4;
         |                                         ^~~~~~~
   In file included from include/linux/kconfig.h:7,
                    from <command-line>:
   mm/page_alloc.c: At top level:
>> ./include/generated/autoconf.h:269:36: error: expected identifier or '(' 
>> before numeric constant
     269 | #define CONFIG_FORCE_MAX_ZONEORDER 11
         |                                    ^~
   include/linux/mmzone.h:29:19: note: in expansion of macro 
'CONFIG_FORCE_MAX_ZONEORDER'
      29 | #define MAX_ORDER CONFIG_FORCE_MAX_ZONEORDER
         |                   ^~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/pageblock-flags.h:48:27: note: in expansion of macro 
'MAX_ORDER'
      48 | #define pageblock_order  (MAX_ORDER-1)
         |                           ^~~~~~~~~
   mm/page_alloc.c:250:14: note: in expansion of macro 'pageblock_order'
     250 | unsigned int pageblock_order __read_mostly;
         |              ^~~~~~~~~~~~~~~
   mm/page_alloc.c:2618:5: warning: no previous prototype for 
'find_suitable_fallback' [-Wmissing-prototypes]
    2618 | int find_suitable_fallback(struct free_area *area, unsigned int 
order,
         |     ^~~~~~~~~~~~~~~~~~~~~~
   mm/page_alloc.c:3596:15: warning: no previous prototype for 
'should_fail_alloc_page' [-Wmissing-prototypes]
    3596 | noinline bool should_fail_alloc_page(gfp_t gfp_mask, unsigned int 
order)
         |               ^~~~~~~~~~~~~~~~~~~~~~
   mm/page_alloc.c:6257:23: warning: no previous prototype for 'memmap_init' 
[-Wmissing-prototypes]
    6257 | void __meminit __weak memmap_init(unsigned long size, int nid,
         |                       ^~~~~~~~~~~
   mm/page_alloc.c: In function 'set_pageblock_order':
>> mm/page_alloc.c:6798:6: error: 'HPAGE_SHIFT' undeclared (first use in this 
>> function); did you mean 'PAGE_SHIFT'?
    6798 |  if (HPAGE_SHIFT > PAGE_SHIFT)
         |      ^~~~~~~~~~~
         |      PAGE_SHIFT
   mm/page_alloc.c:6798:6: note: each undeclared identifier is reported only 
once for each function it appears in
>> mm/page_alloc.c:6799:11: error: 'HUGETLB_PAGE_ORDER' undeclared (first use 
>> in this function)
    6799 |   order = HUGETLB_PAGE_ORDER;
         |           ^~~~~~~~~~~~~~~~~~
>> mm/page_alloc.c:6808:18: error: lvalue required as left operand of assignment
    6808 |  pageblock_order = order;
         |                  ^

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for HUGETLB_PAGE_SIZE_VARIABLE
   Depends on HUGETLB_PAGE
   Selected by
   - IA64


vim +/HUGETLB_PAGE_ORDER +6799 mm/page_alloc.c

ba72cb8cb0cdc0 Mel Gorman     2007-11-28  6788  
d9c2340052278d Mel Gorman     2007-10-16  6789  /* Initialise the number of 
pages represented by NR_PAGEBLOCK_BITS */
03e85f9d5f1f8c Oscar Salvador 2018-08-21  6790  void __init 
set_pageblock_order(void)
d9c2340052278d Mel Gorman     2007-10-16  6791  {
955c1cd7401565 Andrew Morton  2012-05-29  6792          unsigned int order;
955c1cd7401565 Andrew Morton  2012-05-29  6793  
d9c2340052278d Mel Gorman     2007-10-16  6794          /* Check that 
pageblock_nr_pages has not already been setup */
d9c2340052278d Mel Gorman     2007-10-16  6795          if (pageblock_order)
d9c2340052278d Mel Gorman     2007-10-16  6796                  return;
d9c2340052278d Mel Gorman     2007-10-16  6797  
955c1cd7401565 Andrew Morton  2012-05-29 @6798          if (HPAGE_SHIFT > 
PAGE_SHIFT)
955c1cd7401565 Andrew Morton  2012-05-29 @6799                  order = 
HUGETLB_PAGE_ORDER;
955c1cd7401565 Andrew Morton  2012-05-29  6800          else
955c1cd7401565 Andrew Morton  2012-05-29  6801                  order = 
MAX_ORDER - 1;
955c1cd7401565 Andrew Morton  2012-05-29  6802  
d9c2340052278d Mel Gorman     2007-10-16  6803          /*
d9c2340052278d Mel Gorman     2007-10-16  6804           * Assume the largest 
contiguous order of interest is a huge page.
955c1cd7401565 Andrew Morton  2012-05-29  6805           * This value may be 
variable depending on boot parameters on IA64 and
955c1cd7401565 Andrew Morton  2012-05-29  6806           * powerpc.
d9c2340052278d Mel Gorman     2007-10-16  6807           */
d9c2340052278d Mel Gorman     2007-10-16 @6808          pageblock_order = order;
d9c2340052278d Mel Gorman     2007-10-16  6809  }
d9c2340052278d Mel Gorman     2007-10-16  6810  #else /* 
CONFIG_HUGETLB_PAGE_SIZE_VARIABLE */
d9c2340052278d Mel Gorman     2007-10-16  6811  

---
0-DAY CI Kernel Test Service, Intel Corporation
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