[PATCH] riscv: arch-topology: fix default topology reporting

[kernel test robot]

Hi Conor,

I love your patch! Yet something to improve:

[auto build test ERROR on b6f1f2fa2bddd69ff46a190b8120bd440fd50563]

url:    https://github.com/intel-lab-lkp/linux/commits/Conor-Dooley/riscv-arch-topology-fix-default-topology-reporting/20220707-024856
base:   b6f1f2fa2bddd69ff46a190b8120bd440fd50563
config: riscv-randconfig-r042-20220706 (https://download.01.org/0day-ci/archive/20220707/202207070728.MiQn5fv0-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project f553287b588916de09c66e3e32bf75e5060f967f)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install riscv cross compiling tool for clang build
        # apt-get install binutils-riscv-linux-gnu
        # https://github.com/intel-lab-lkp/linux/commit/824f4c3cb56ada865e6e3b14457c0582fa255cbf
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Conor-Dooley/riscv-arch-topology-fix-default-topology-reporting/20220707-024856
        git checkout 824f4c3cb56ada865e6e3b14457c0582fa255cbf
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash arch/riscv/kernel/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp at intel.com>

All errors (new ones prefixed by >>):

>> arch/riscv/kernel/topology.c:17:37: error: use of undeclared identifier 'cpu_topology'
           struct cpu_topology *cpuid_topo = &cpu_topology[cpuid];
                                              ^
>> arch/riscv/kernel/topology.c:31:2: error: call to undeclared function 'update_siblings_masks'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
           update_siblings_masks(cpuid);
           ^
   2 errors generated.


vim +/cpu_topology +17 arch/riscv/kernel/topology.c

    14	
    15	void store_cpu_topology(unsigned int cpuid)
    16	{
  > 17		struct cpu_topology *cpuid_topo = &cpu_topology[cpuid];
    18	
    19		if (cpuid_topo->package_id != -1)
    20			goto topology_populated;
    21	
    22		cpuid_topo->thread_id = -1;
    23		cpuid_topo->core_id = cpuid;
    24		cpuid_topo->package_id = cpu_to_node(cpuid);
    25	
    26		pr_debug("CPU%u: package %d core %d thread %d\n",
    27			 cpuid, cpuid_topo->package_id, cpuid_topo->core_id,
    28			 cpuid_topo->thread_id);
    29	
    30	topology_populated:
  > 31		update_siblings_masks(cpuid);

-- 
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https://01.org/lkp