mm/memblock.c: use CONFIG_HAVE_MEMBLOCK_NODE_MAP to protect movablecore_map in memblo...
[~shefty/rdma-dev.git] / mm / memblock.c
index c83ff97f57f415c0f3eca4ee67d552ed410bd9e9..1bcd9b97056481524978ed295e25051c5bbe7536 100644 (file)
@@ -92,9 +92,13 @@ static long __init_memblock memblock_overlaps_region(struct memblock_type *type,
  *
  * Find @size free area aligned to @align in the specified range and node.
  *
+ * If we have CONFIG_HAVE_MEMBLOCK_NODE_MAP defined, we need to check if the
+ * memory we found if not in hotpluggable ranges.
+ *
  * RETURNS:
  * Found address on success, %0 on failure.
  */
+#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
 phys_addr_t __init_memblock memblock_find_in_range_node(phys_addr_t start,
                                        phys_addr_t end, phys_addr_t size,
                                        phys_addr_t align, int nid)
@@ -139,6 +143,36 @@ restart:
 
        return 0;
 }
+#else /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */
+phys_addr_t __init_memblock memblock_find_in_range_node(phys_addr_t start,
+                                       phys_addr_t end, phys_addr_t size,
+                                       phys_addr_t align, int nid)
+{
+       phys_addr_t this_start, this_end, cand;
+       u64 i;
+
+       /* pump up @end */
+       if (end == MEMBLOCK_ALLOC_ACCESSIBLE)
+               end = memblock.current_limit;
+
+       /* avoid allocating the first page */
+       start = max_t(phys_addr_t, start, PAGE_SIZE);
+       end = max(start, end);
+
+       for_each_free_mem_range_reverse(i, nid, &this_start, &this_end, NULL) {
+               this_start = clamp(this_start, start, end);
+               this_end = clamp(this_end, start, end);
+
+               if (this_end < size)
+                       continue;
+
+               cand = round_down(this_end - size, align);
+               if (cand >= this_start)
+                       return cand;
+       }
+       return 0;
+}
+#endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */
 
 /**
  * memblock_find_in_range - find free area in given range