[PATCH v6 2/4] arch_topology: Support SMT control for OF based system

[kernel test robot]

Hi Yicong,

kernel test robot noticed the following build warnings:

[auto build test WARNING on arm64/for-next/core]
[also build test WARNING on powerpc/next powerpc/fixes driver-core/driver-core-testing driver-core/driver-core-next driver-core/driver-core-linus linus/master tip/x86/core v6.12-rc3 next-20241015]
[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/Yicong-Yang/cpu-SMT-Provide-a-default-topology_is_primary_thread/20241015-102147
base:   https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core
patch link:    https://lore.kernel.org/r/20241015021841.35713-3-yangyicong%40huawei.com
patch subject: [PATCH v6 2/4] arch_topology: Support SMT control for OF based system
config: arm-randconfig-001-20241016 (https://download.01.org/0day-ci/archive/20241016/202410161038.WVTopMNt-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241016/202410161038.WVTopMNt-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 at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202410161038.WVTopMNt-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/base/arch_topology.c:32:21: warning: 'max_smt_thread_num' defined but not used [-Wunused-variable]
      32 | static unsigned int max_smt_thread_num;
         |                     ^~~~~~~~~~~~~~~~~~


vim +/max_smt_thread_num +32 drivers/base/arch_topology.c

    28	
    29	static DEFINE_PER_CPU(struct scale_freq_data __rcu *, sft_data);
    30	static struct cpumask scale_freq_counters_mask;
    31	static bool scale_freq_invariant;
  > 32	static unsigned int max_smt_thread_num;
    33	DEFINE_PER_CPU(unsigned long, capacity_freq_ref) = 1;
    34	EXPORT_PER_CPU_SYMBOL_GPL(capacity_freq_ref);
    35	

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