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Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , linux-kernel@vger.kernel.org, Cao Ruichuang Subject: Re: [PATCH] mm/vmstat: reject invalid stat_interval values Message-ID: <202604111816.CsqTatIh-lkp@intel.com> References: <20260410112554.23165-1-create0818@163.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260410112554.23165-1-create0818@163.com> 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 | 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 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki