[avpatel:riscv_pmem_v1 9/11] arch/riscv/mm/cacheflush.c:99:2: error: call to undeclared function 'for_each_of_cpu_node'; ISO C99 and later do not support implicit function declarations

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/avpatel/linux.git riscv_pmem_v1
head:   3d8ca09f6ee6f53dd03a1eeda6a68ef73056601e
commit: 1cb8ad397aba3a012059dacd724ac7772bf6ea54 [9/11] RISC-V: Move riscv_init_cbom_blocksize() to cacheflush.c
config: riscv-randconfig-r042-20220830 (https://download.01.org/0day-ci/archive/20220831/202208311748.kkZGf9sX-lkp@intel.com/config)
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project c7df82e4693c19e3fd2e25c83eb04d9deb7b7b59)
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-riscv64-linux-gnu
        # https://github.com/avpatel/linux/commit/1cb8ad397aba3a012059dacd724ac7772bf6ea54
        git remote add avpatel https://github.com/avpatel/linux.git
        git fetch --no-tags avpatel riscv_pmem_v1
        git checkout 1cb8ad397aba3a012059dacd724ac7772bf6ea54
        # 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/mm/

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

All errors (new ones prefixed by >>):

>> arch/riscv/mm/cacheflush.c:99:2: error: call to undeclared function 'for_each_of_cpu_node'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
           for_each_of_cpu_node(node) {
           ^
>> arch/riscv/mm/cacheflush.c:99:28: error: expected ';' after expression
           for_each_of_cpu_node(node) {
                                     ^
                                     ;
>> arch/riscv/mm/cacheflush.c:105:4: error: 'continue' statement not in loop statement
                           continue;
                           ^
   arch/riscv/mm/cacheflush.c:108:4: error: 'continue' statement not in loop statement
                           continue;
                           ^
>> arch/riscv/mm/cacheflush.c:111:9: error: call to undeclared function 'of_property_read_u32'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
                   ret = of_property_read_u32(node, "riscv,cbom-block-size", &val);
                         ^
   arch/riscv/mm/cacheflush.c:113:4: error: 'continue' statement not in loop statement
                           continue;
                           ^
   6 errors generated.


vim +/for_each_of_cpu_node +99 arch/riscv/mm/cacheflush.c

    91	
    92	#ifdef CONFIG_RISCV_ISA_ZICBOM
    93	void riscv_init_cbom_blocksize(void)
    94	{
    95		struct device_node *node;
    96		int ret;
    97		u32 val;
    98	
  > 99		for_each_of_cpu_node(node) {
   100			unsigned long hartid;
   101			int cbom_hartid;
   102	
   103			ret = riscv_of_processor_hartid(node, &hartid);
   104			if (ret)
 > 105				continue;
   106	
   107			if (hartid < 0)
   108				continue;
   109	
   110			/* set block-size for cbom extension if available */
 > 111			ret = of_property_read_u32(node, "riscv,cbom-block-size", &val);

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