* Re: [PATCH] mm/vmstat: reject invalid stat_interval values
[not found] <20260410112554.23165-1-create0818@163.com>
@ 2026-04-11 11:07 ` kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2026-04-11 11:07 UTC (permalink / raw)
To: Cao Ruichuang, Andrew Morton
Cc: llvm, oe-kbuild-all, Linux Memory Management List,
David Hildenbrand, Lorenzo Stoakes, Liam R . Howlett,
Vlastimil Babka, Mike Rapoport, Suren Baghdasaryan, Michal Hocko,
linux-kernel, Cao Ruichuang
Hi Cao,
kernel test robot noticed the following build warnings:
[auto build test WARNING on akpm-mm/mm-everything]
url: https://github.com/intel-lab-lkp/linux/commits/Cao-Ruichuang/mm-vmstat-reject-invalid-stat_interval-values/20260411-085547
base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link: https://lore.kernel.org/r/20260410112554.23165-1-create0818%40163.com
patch subject: [PATCH] mm/vmstat: reject invalid stat_interval values
config: arm-randconfig-004-20260411 (https://download.01.org/0day-ci/archive/20260411/202604111816.CsqTatIh-lkp@intel.com/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project ae825cb8cea7f3ac8e5e4096f22713845cf5e501)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260411/202604111816.CsqTatIh-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/202604111816.CsqTatIh-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> mm/vmstat.c:1968:18: warning: unused variable 'sysctl_stat_interval_max' [-Wunused-const-variable]
1968 | static const int sysctl_stat_interval_max = INT_MAX / HZ;
| ^~~~~~~~~~~~~~~~~~~~~~~~
1 warning generated.
vim +/sysctl_stat_interval_max +1968 mm/vmstat.c
1964
1965 #ifdef CONFIG_SMP
1966 static DEFINE_PER_CPU(struct delayed_work, vmstat_work);
1967 static int sysctl_stat_interval __read_mostly = HZ;
> 1968 static const int sysctl_stat_interval_max = INT_MAX / HZ;
1969 static int vmstat_late_init_done;
1970
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0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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