[openeuler:OLK-6.6 9677/9706] arch/arm64/kernel/cpufeature.c:2129:13: warning: unused variable 'enable_pseudo_nmi'

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

tree:   https://gitee.com/openeuler/kernel.git OLK-6.6
head:   b51533d469099a915373a13041776b93b232ff65
commit: c6ce2becb89528f83c1ad3c0607ad05baecebc0a [9677/9706] arm64/cpufeature: Fix pseudo nmi identifier undeclaration complilation error
config: arm64-randconfig-001-20240523 (https://download.01.org/0day-ci/archive/20240523/202405230925.19JMExYE-lkp@intel.com/config)
compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project fa9b1be45088dce1e4b602d451f118128b94237b)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240523/202405230925.19JMExYE-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/202405230925.19JMExYE-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from arch/arm64/kernel/cpufeature.c:67:
   In file included from include/linux/crash_dump.h:5:
   In file included from include/linux/kexec.h:18:
   In file included from include/linux/crash_core.h:6:
   In file included from include/linux/elfcore.h:11:
   In file included from include/linux/ptrace.h:10:
   In file included from include/linux/pid_namespace.h:7:
   In file included from include/linux/mm.h:2234:
   include/linux/vmstat.h:508:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     508 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     509 |                            item];
         |                            ~~~~
   include/linux/vmstat.h:515:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     515 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     516 |                            NR_VM_NUMA_EVENT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~~
   include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
     522 |         return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
         |                               ~~~~~~~~~~~ ^ ~~~
   include/linux/vmstat.h:527:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     527 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     528 |                            NR_VM_NUMA_EVENT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~~
>> arch/arm64/kernel/cpufeature.c:2129:13: warning: unused variable 'enable_pseudo_nmi' [-Wunused-variable]
    2129 | static bool enable_pseudo_nmi;
         |             ^~~~~~~~~~~~~~~~~
   5 warnings generated.


vim +/enable_pseudo_nmi +2129 arch/arm64/kernel/cpufeature.c

3e6c69a058deaa Mark Brown     2019-12-09  2127  
f72387e1f8bc99 Mark Brown     2022-11-03  2128  #if IS_ENABLED(CONFIG_ARM64_PSEUDO_NMI) || IS_ENABLED(CONFIG_ARM64_NMI)
bc3c03ccb4641f Julien Thierry 2019-01-31 @2129  static bool enable_pseudo_nmi;
f72387e1f8bc99 Mark Brown     2022-11-03  2130  #endif
bc3c03ccb4641f Julien Thierry 2019-01-31  2131  

:::::: The code at line 2129 was first introduced by commit
:::::: bc3c03ccb4641fb940b27a0d369431876923a8fe arm64: Enable the support of pseudo-NMIs

:::::: TO: Julien Thierry <julien.thierry@arm.com>
:::::: CC: Catalin Marinas <catalin.marinas@arm.com>

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