Re: [RFC PATCH 40/40] mm: page_alloc: SPB tracepoint instrumentation [DO-NOT-MERGE]

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

Hi Johannes,

[This is a private test report for your RFC patch.]
kernel test robot noticed the following build errors:

[auto build test ERROR on rppt-memblock/fixes]
[cannot apply to akpm-mm/mm-everything rppt-memblock/for-next linus/master v6.16-rc1 next-20260520]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Rik-van-Riel/mm-page_alloc-replace-pageblock_flags-bitmap-with-struct-pageblock_data/20260520-231340
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock.git fixes
patch link:    https://lore.kernel.org/r/20260520150018.2491267-41-riel%40surriel.com
patch subject: [RFC PATCH 40/40] mm: page_alloc: SPB tracepoint instrumentation [DO-NOT-MERGE]
config: i386-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20260521/202605210734.l80ENPHT-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260521/202605210734.l80ENPHT-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202605210734.l80ENPHT-lkp@intel.com/

All error/warnings (new ones prefixed by >>):

   In file included from kernel/fork.c:120:
   kernel/../mm/internal.h: In function 'pfn_to_pageblock':
>> kernel/../mm/internal.h:824:37: error: invalid use of undefined type 'struct pageblock_data'
     824 |         return &zone->pageblock_data[idx];
         |                                     ^
--
   In file included from mm/filemap.c:54:
   mm/internal.h: In function 'pfn_to_pageblock':
>> mm/internal.h:824:37: error: invalid use of undefined type 'struct pageblock_data'
     824 |         return &zone->pageblock_data[idx];
         |                                     ^
--
   In file included from mm/mm_init.c:35:
   mm/internal.h: In function 'pfn_to_pageblock':
>> mm/internal.h:824:37: error: invalid use of undefined type 'struct pageblock_data'
     824 |         return &zone->pageblock_data[idx];
         |                                     ^
   mm/mm_init.c: In function 'usemap_size':
>> mm/mm_init.c:1467:39: error: invalid application of 'sizeof' to incomplete type 'struct pageblock_data'
    1467 |         return nr_pageblocks * sizeof(struct pageblock_data);
         |                                       ^~~~~~
>> mm/mm_init.c:1468:1: warning: control reaches end of non-void function [-Wreturn-type]
    1468 | }
         | ^
--
   In file included from mm/page_alloc.c:58:
   mm/internal.h: In function 'pfn_to_pageblock':
>> mm/internal.h:824:37: error: invalid use of undefined type 'struct pageblock_data'
     824 |         return &zone->pageblock_data[idx];
         |                                     ^
   mm/page_alloc.c: In function 'get_pfnblock_flags_word':
>> mm/page_alloc.c:329:44: error: invalid use of undefined type 'struct pageblock_data'
     329 |         return &pfn_to_pageblock(page, pfn)->flags;
         |                                            ^~
>> mm/page_alloc.c:330:1: warning: control reaches end of non-void function [-Wreturn-type]
     330 | }
         | ^
--
   In file included from fs/exec.c:82:
   fs/../mm/internal.h: In function 'pfn_to_pageblock':
>> fs/../mm/internal.h:824:37: error: invalid use of undefined type 'struct pageblock_data'
     824 |         return &zone->pageblock_data[idx];
         |                                     ^
--
   In file included from lib/vsprintf.c:51:
   lib/../mm/internal.h: In function 'pfn_to_pageblock':
>> lib/../mm/internal.h:824:37: error: invalid use of undefined type 'struct pageblock_data'
     824 |         return &zone->pageblock_data[idx];
         |                                     ^


vim +824 kernel/../mm/internal.h

   810	
   811	static inline struct pageblock_data *pfn_to_pageblock(const struct page *page,
   812							      unsigned long pfn)
   813	{
   814	#ifdef CONFIG_SPARSEMEM
   815		struct mem_section *ms = __pfn_to_section(pfn);
   816		unsigned long idx = (pfn & (PAGES_PER_SECTION - 1)) >> pageblock_order;
   817	
   818		return &section_to_usemap(ms)[idx];
   819	#else
   820		struct zone *zone = page_zone(page);
   821		unsigned long idx;
   822	
   823		idx = (pfn - pageblock_start_pfn(zone->zone_start_pfn)) >> pageblock_order;
 > 824		return &zone->pageblock_data[idx];
   825	#endif
   826	}
   827	

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