include/linux/vmstat.h:400:43: error: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item')

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   04b8076df2534f08bb4190f90a24e0f7f8930aca
commit: c348c16305280fe3e6c1186378f96c8634c149f9 lib: make a test module with set/clear bit
date:   3 years, 9 months ago
config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20240303/202403031232.DGh2J4ks-lkp@xxxxxxxxx/config)
compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project 325f51237252e6dab8e4e1ea1fa7acbb4faee1cd)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240303/202403031232.DGh2J4ks-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202403031232.DGh2J4ks-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

   In file included from lib/test_bitops.c:9:
   In file included from include/linux/module.h:18:
   In file included from include/linux/elf.h:6:
   In file included from arch/s390/include/asm/elf.h:145:
   In file included from arch/s390/include/asm/mmu_context.h:11:
   In file included from arch/s390/include/asm/pgalloc.h:18:
   In file included from include/linux/mm.h:1485:
>> include/linux/vmstat.h:400:43: error: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Werror,-Wenum-enum-conversion]
     400 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     401 |                            item];
         |                            ~~~~
   include/linux/vmstat.h:407:43: error: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Werror,-Wenum-enum-conversion]
     407 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     408 |                            NR_VM_NUMA_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~
>> include/linux/vmstat.h:414:36: error: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Werror,-Wenum-enum-conversion]
     414 |         return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
         |                               ~~~~~~~~~~~ ^ ~~~
   include/linux/vmstat.h:419:43: error: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Werror,-Wenum-enum-conversion]
     419 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     420 |                            NR_VM_NUMA_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~
   include/linux/vmstat.h:428:43: error: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Werror,-Wenum-enum-conversion]
     428 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     429 |                            NR_VM_NUMA_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~
   5 errors generated.


vim +400 include/linux/vmstat.h

9d7ea9a297e644 Konstantin Khlebnikov 2019-12-04  396  
9d7ea9a297e644 Konstantin Khlebnikov 2019-12-04  397  #ifdef CONFIG_NUMA
9d7ea9a297e644 Konstantin Khlebnikov 2019-12-04  398  static inline const char *numa_stat_name(enum numa_stat_item item)
9d7ea9a297e644 Konstantin Khlebnikov 2019-12-04  399  {
9d7ea9a297e644 Konstantin Khlebnikov 2019-12-04 @400  	return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
9d7ea9a297e644 Konstantin Khlebnikov 2019-12-04  401  			   item];
9d7ea9a297e644 Konstantin Khlebnikov 2019-12-04  402  }
9d7ea9a297e644 Konstantin Khlebnikov 2019-12-04  403  #endif /* CONFIG_NUMA */
9d7ea9a297e644 Konstantin Khlebnikov 2019-12-04  404  
9d7ea9a297e644 Konstantin Khlebnikov 2019-12-04  405  static inline const char *node_stat_name(enum node_stat_item item)
9d7ea9a297e644 Konstantin Khlebnikov 2019-12-04  406  {
9d7ea9a297e644 Konstantin Khlebnikov 2019-12-04  407  	return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
9d7ea9a297e644 Konstantin Khlebnikov 2019-12-04  408  			   NR_VM_NUMA_STAT_ITEMS +
9d7ea9a297e644 Konstantin Khlebnikov 2019-12-04  409  			   item];
9d7ea9a297e644 Konstantin Khlebnikov 2019-12-04  410  }
9d7ea9a297e644 Konstantin Khlebnikov 2019-12-04  411  
9d7ea9a297e644 Konstantin Khlebnikov 2019-12-04  412  static inline const char *lru_list_name(enum lru_list lru)
9d7ea9a297e644 Konstantin Khlebnikov 2019-12-04  413  {
9d7ea9a297e644 Konstantin Khlebnikov 2019-12-04 @414  	return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
9d7ea9a297e644 Konstantin Khlebnikov 2019-12-04  415  }
9d7ea9a297e644 Konstantin Khlebnikov 2019-12-04  416  

:::::: The code at line 400 was first introduced by commit
:::::: 9d7ea9a297e6445d567056f15b469dde13ca4134 mm/vmstat: add helpers to get vmstat item names for each enum type

:::::: TO: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>

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