[tglx-devel:x86/topology 41/57] arch/x86/kernel/cpu/topology_common.c:160:9: error: 'smp_num_siblings' undeclared

[tglx-devel:x86/topology 41/57] arch/x86/kernel/cpu/topology_common.c:160:9: error: 'smp_num_siblings' undeclared

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git x86/topology
head:   39d1f9d6ad3d4b9bf9c298db5685f22d8fe6e2c0
commit: cddc2e9c0152480ee1041b2806b1301b0157d109 [41/57] x86/cpu: Provide cpu_init/parse_topology()
config: i386-buildonly-randconfig-r004-20230714 (https://download.01.org/0day-ci/archive/20230714/202307141142.bJnAU433-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce: (https://download.01.org/0day-ci/archive/20230714/202307141142.bJnAU433-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/202307141142.bJnAU433-lkp@intel.com/

All errors (new ones prefixed by >>):

   arch/x86/kernel/cpu/topology_common.c: In function 'cpu_init_topology':
>> arch/x86/kernel/cpu/topology_common.c:160:9: error: 'smp_num_siblings' undeclared (first use in this function)
     160 |         smp_num_siblings = x86_topo_system.dom_size[TOPO_SMT_DOMAIN];
         |         ^~~~~~~~~~~~~~~~
   arch/x86/kernel/cpu/topology_common.c:160:9: note: each undeclared identifier is reported only once for each function it appears in


vim +/smp_num_siblings +160 arch/x86/kernel/cpu/topology_common.c

   130	
   131	void __init cpu_init_topology(struct cpuinfo_x86 *c)
   132	{
   133		struct topo_scan tscan = { .c = c, };
   134		unsigned int dom, sft;
   135	
   136		parse_topology(&tscan, true);
   137	
   138		if (!topo_is_converted(c))
   139			return;
   140	
   141		/* Copy the shift values and calculate the unit sizes. */
   142		memcpy(x86_topo_system.dom_shifts, tscan.dom_shifts, sizeof(x86_topo_system.dom_shifts));
   143	
   144		dom = TOPO_SMT_DOMAIN;
   145		x86_topo_system.dom_size[dom] = 1U << x86_topo_system.dom_shifts[dom];
   146	
   147		for (dom++; dom < TOPO_MAX_DOMAIN; dom++) {
   148			sft = x86_topo_system.dom_shifts[dom] - x86_topo_system.dom_shifts[dom - 1];
   149			x86_topo_system.dom_size[dom] = 1U << sft;
   150		}
   151	
   152		topo_set_ids(&tscan);
   153		topo_set_max_cores(&tscan);
   154	
   155		/*
   156		 * This is deliberately using the domain size and not the real one,
   157		 * as this might be a hybrid system. If the boot CPU does not have
   158		 * SMT this would end up with one sibling.
   159		 */
 > 160		smp_num_siblings = x86_topo_system.dom_size[TOPO_SMT_DOMAIN];

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki