Re: [PATCH v1] arch_topology: Introduce nr_possible_packages

[Feng Tang <feng.tang@linux.alibaba.com>]

On Sat, May 16, 2026 at 07:46:10PM +0800, kernel test robot wrote:
> Hi Feng,
> 
> kernel test robot noticed the following build warnings:
> 
> [auto build test WARNING on driver-core/driver-core-testing]
> [also build test WARNING on driver-core/driver-core-next driver-core/driver-core-linus linus/master v7.1-rc3 next-20260508]
> [cannot apply to linux-review/Feng-Tang/arch_topology-Introduce-nr_possible_packages/20260514-094659]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch#_base_tree_information]
> 
> url:    https://github.com/intel-lab-lkp/linux/commits/Feng-Tang/arch_topology-Introduce-nr_possible_packages/20260515-230156
> base:   driver-core/driver-core-testing
> patch link:    https://lore.kernel.org/r/20260515144435.93035-1-feng.tang%40linux.alibaba.com
> patch subject: [PATCH v1] arch_topology: Introduce nr_possible_packages
> config: parisc-randconfig-r122-20260516 (https://download.01.org/0day-ci/archive/20260516/202605161935.1SnObrFu-lkp@intel.com/config)
> compiler: hppa-linux-gcc (GCC) 13.4.0
> sparse: v0.6.5-rc1
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260516/202605161935.1SnObrFu-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/202605161935.1SnObrFu-lkp@intel.com/
> 
> sparse warnings: (new ones prefixed by >>)
> >> drivers/base/arch_topology.c:841:1: sparse: sparse: symbol 'package_id_mask' was not declared. Should it be static?

Thanks for the report! will fix this warning in the next version.

- Feng
> 
> vim +/package_id_mask +841 drivers/base/arch_topology.c
> 
>    835	
>    836	/*
>    837	 * Assuming silicon has a sane package ID decoding method to not have
>    838	 * an ID bigger than 2047
>    839	 */
>    840	#define MAX_PACKAGE_ID	2047
>  > 841	DECLARE_BITMAP(package_id_mask, MAX_PACKAGE_ID + 1);
>    842	
> 
> --
> 0-DAY CI Kernel Test Service
> https://github.com/intel/lkp-tests/wiki