linux-kernel - Re: [PATCH] mm: swap the definition of CONFIG_SPARSEMEM_VMEMMAP and CONFIG

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Message-ID: <202211042004.64YUHnRN-lkp@intel.com>
Date:   Fri, 4 Nov 2022 21:14:55 +0800
From:   kernel test robot <lkp@...el.com>
To:     "zhijun.han" <hanzj.it@...il.com>, arnd@...db.de
Cc:     oe-kbuild-all@...ts.linux.dev, linux-arch@...r.kernel.org,
        linux-kernel@...r.kernel.org, "zhijun.han" <hanzj.it@...il.com>
Subject: Re: [PATCH] mm: swap the definition of CONFIG_SPARSEMEM_VMEMMAP and
 CONFIG_SPARSEMEM

Hi zhijun.han",

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/zhijun-han/mm-swap-the-definition-of-CONFIG_SPARSEMEM_VMEMMAP-and-CONFIG_SPARSEMEM/20221104-113343
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20221104032808.24565-1-hanzj.it%40gmail.com
patch subject: [PATCH] mm: swap the definition of CONFIG_SPARSEMEM_VMEMMAP and CONFIG_SPARSEMEM
config: x86_64-randconfig-a013
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/04bf0fed9ff385e0baa59523172d54a9d91519f9
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review zhijun-han/mm-swap-the-definition-of-CONFIG_SPARSEMEM_VMEMMAP-and-CONFIG_SPARSEMEM/20221104-113343
        git checkout 04bf0fed9ff385e0baa59523172d54a9d91519f9
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 prepare

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 >>):

   make[5]: *** No rule to make target 'tools/include/uapi/linux/stddef.h', needed by 'tools/bpf/resolve_btfids/libbpf/staticobjs/libbpf.o'.  Stop.
   make[4]: *** [Makefile:157: tools/bpf/resolve_btfids/libbpf/staticobjs/libbpf-in.o] Error 2
   make[3]: *** [Makefile:55: tools/bpf/resolve_btfids//libbpf/libbpf.a] Error 2
   make[2]: *** [Makefile:76: bpf/resolve_btfids] Error 2
   make[1]: *** [Makefile:1423: tools/bpf/resolve_btfids] Error 2
   In file included from arch/x86/include/asm/page.h:86,
                    from arch/x86/include/asm/thread_info.h:12,
                    from include/linux/thread_info.h:60,
                    from arch/x86/include/asm/preempt.h:7,
                    from include/linux/preempt.h:78,
                    from include/linux/spinlock.h:56,
                    from include/linux/mmzone.h:8,
                    from include/linux/gfp.h:7,
                    from include/linux/slab.h:15,
                    from include/linux/crypto.h:20,
                    from arch/x86/kernel/asm-offsets.c:9:
   include/linux/mm.h: In function 'folio_pfn':
>> include/asm-generic/memory_model.h:29:21: error: implicit declaration of function 'page_to_section'; did you mean 'present_section'? [-Werror=implicit-function-declaration]
      29 |         int __sec = page_to_section(__pg);                      \
         |                     ^~~~~~~~~~~~~~~
   include/asm-generic/memory_model.h:52:21: note: in expansion of macro '__page_to_pfn'
      52 | #define page_to_pfn __page_to_pfn
         |                     ^~~~~~~~~~~~~
   include/linux/mm.h:1495:16: note: in expansion of macro 'page_to_pfn'
    1495 |         return page_to_pfn(&folio->page);
         |                ^~~~~~~~~~~
   cc1: some warnings being treated as errors
   make[2]: *** [scripts/Makefile.build:118: arch/x86/kernel/asm-offsets.s] Error 1
   make[2]: Target 'prepare' not remade because of errors.
   make[1]: *** [Makefile:1270: prepare0] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:231: __sub-make] Error 2
   make: Target 'prepare' not remade because of errors.


vim +29 include/asm-generic/memory_model.h

a117e66ed45ac0 KAMEZAWA Hiroyuki 2006-03-27  17  
67de648211fa04 Andy Whitcroft    2006-06-23  18  #define __pfn_to_page(pfn)	(mem_map + ((pfn) - ARCH_PFN_OFFSET))
67de648211fa04 Andy Whitcroft    2006-06-23  19  #define __page_to_pfn(page)	((unsigned long)((page) - mem_map) + \
a117e66ed45ac0 KAMEZAWA Hiroyuki 2006-03-27  20  				 ARCH_PFN_OFFSET)
a117e66ed45ac0 KAMEZAWA Hiroyuki 2006-03-27  21  
a117e66ed45ac0 KAMEZAWA Hiroyuki 2006-03-27  22  #elif defined(CONFIG_SPARSEMEM)
a117e66ed45ac0 KAMEZAWA Hiroyuki 2006-03-27  23  /*
1a49123b343461 Zhang Yanfei      2013-10-03  24   * Note: section's mem_map is encoded to reflect its start_pfn.
a117e66ed45ac0 KAMEZAWA Hiroyuki 2006-03-27  25   * section[i].section_mem_map == mem_map's address - start_pfn;
a117e66ed45ac0 KAMEZAWA Hiroyuki 2006-03-27  26   */
67de648211fa04 Andy Whitcroft    2006-06-23  27  #define __page_to_pfn(pg)					\
aa462abe8aaf21 Ian Campbell      2011-08-17  28  ({	const struct page *__pg = (pg);				\
a117e66ed45ac0 KAMEZAWA Hiroyuki 2006-03-27 @29  	int __sec = page_to_section(__pg);			\
f05b6284ee5d3b Randy Dunlap      2007-02-10  30  	(unsigned long)(__pg - __section_mem_map_addr(__nr_to_section(__sec)));	\
a117e66ed45ac0 KAMEZAWA Hiroyuki 2006-03-27  31  })
a117e66ed45ac0 KAMEZAWA Hiroyuki 2006-03-27  32  

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