Re: [PATCH 1/2] mm/memblock: Added a New Memblock Function to Check if the Current Node's Memblock Region Intersects with a Memory Block

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

Hi Donet,

kernel test robot noticed the following build errors:

[auto build test ERROR on akpm-mm/mm-everything]

url:    https://github.com/intel-lab-lkp/linux/commits/Donet-Tom/base-node-Use-curr_node_memblock_intersect_memory_block-to-Get-Memory-Block-NID-if-CONFIG_DEFERRED_STRUCT_PAGE_INIT-is-S/20250409-132924
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/50142a29010463f436dc5c4feb540e5de3bb09df.1744175097.git.donettom%40linux.ibm.com
patch subject: [PATCH 1/2] mm/memblock: Added a New Memblock Function to Check if the Current Node's Memblock Region Intersects with a Memory Block
config: csky-randconfig-001-20250410 (https://download.01.org/0day-ci/archive/20250410/202504101459.iFHlVGBA-lkp@intel.com/config)
compiler: csky-linux-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250410/202504101459.iFHlVGBA-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/202504101459.iFHlVGBA-lkp@intel.com/

All errors (new ones prefixed by >>):

   mm/memblock.c: In function 'curr_node_memblock_intersect_memory_block':
>> mm/memblock.c:1943:22: error: 'struct memblock_region' has no member named 'nid'
    1943 |                 if (r->nid == curr_nid) {
         |                      ^~


vim +1943 mm/memblock.c

  1913	
  1914	/**
  1915	 * curr_node_memblock_intersect_memory_block:  checks if the current node's memblock
  1916	 * region intersects with the memory block.
  1917	 * @start_pfn: memory block start pfn
  1918	 * @end_pfn: memory block end_pfn
  1919	 * @curr_nid: Current node
  1920	 *
  1921	 * This function takes the start and end PFN of a memory block, as well as the node ID
  1922	 * that is being registered. It then finds the memblock region of the current node and
  1923	 * checks if the passed memory block intersects with the memblock. If there is an
  1924	 * intersection, the function returns true; otherwise, it returns false.
  1925	 *
  1926	 * Return:
  1927	 * If the current node's memblock region intersects with the memory block, it returns
  1928	 * true; otherwise, it returns false.
  1929	 */
  1930	bool __init_memblock curr_node_memblock_intersect_memory_block(unsigned long start_pfn,
  1931							unsigned long end_pfn, int curr_nid)
  1932	{
  1933		struct memblock_region *r;
  1934		unsigned long r_start, r_end;
  1935		unsigned long size = end_pfn - start_pfn;
  1936		unsigned long r_size = 0;
  1937	
  1938		for_each_mem_region(r) {
  1939			r_start = PFN_DOWN(r->base);
  1940			r_end = PFN_DOWN(r->base + r->size);
  1941			r_size = r_end - r_start;
  1942	
> 1943			if (r->nid == curr_nid) {
  1944				if (size > r_size) {
  1945					/*
  1946					 * The memory block size is greater than the memblock
  1947					 * region size, meaning multiple memblocks can be present
  1948					 * within a single memory block. If the memblock's start
  1949					 * or end is within the memory block's start and end, It
  1950					 * indicates that the memblock is part of this memory block.
  1951					 * Therefore, the memory block can be added to the node
  1952					 * where the memblock resides.
  1953					 */
  1954					if (in_range(r_start, start_pfn, size) ||
  1955							in_range(r_end, start_pfn, size))
  1956						return true;
  1957				} else {
  1958					/*
  1959					 * The memory block size is less than or equal to the
  1960					 * memblock size, meaning multiple memory blocks can
  1961					 * be part of a single memblock region. If the memory
  1962					 * block's start or end is within the memblock's start
  1963					 * and end, it indicates that the memory block is part of
  1964					 * the memblock. Therefore, the memory block can be added
  1965					 * to the node where the memblock resides.
  1966					 */
  1967					if (in_range(start_pfn, r_start, r_size) ||
  1968							in_range(end_pfn, r_start, r_size))
  1969						return true;
  1970				}
  1971			}
  1972		}
  1973		return false;
  1974	}
  1975	

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