-/*
- * Scan the memory info structure and pull out:
- * - the end of memory
- * - the number of nodes
- * - the pfn range of each node
- * - the number of bootmem bitmap pages
- */
-static unsigned int __init
-find_memend_and_nodes(struct meminfo *mi, struct node_info *np)
-{
- unsigned int i, bootmem_pages = 0, memend_pfn = 0;
-
- for (i = 0; i < MAX_NUMNODES; i++) {
- np[i].start = -1U;
- np[i].end = 0;
- np[i].bootmap_pages = 0;
- }
-
- for (i = 0; i < mi->nr_banks; i++) {
- unsigned long start, end;
- int node;
-
- if (mi->bank[i].size == 0) {
- /*
- * Mark this bank with an invalid node number
- */
- mi->bank[i].node = -1;
- continue;
- }
-
- node = mi->bank[i].node;
-
- /*
- * Make sure we haven't exceeded the maximum number of nodes
- * that we have in this configuration. If we have, we're in
- * trouble. (maybe we ought to limit, instead of bugging?)
- */
- if (node >= MAX_NUMNODES)
- BUG();
- node_set_online(node);
-
- /*
- * Get the start and end pfns for this bank
- */
- start = O_PFN_UP(mi->bank[i].start);
- end = O_PFN_DOWN(mi->bank[i].start + mi->bank[i].size);
-
- if (np[node].start > start)
- np[node].start = start;
-
- if (np[node].end < end)
- np[node].end = end;
-
- if (memend_pfn < end)
- memend_pfn = end;
- }
-
- /*
- * Calculate the number of pages we require to
- * store the bootmem bitmaps.
- */
- for_each_online_node(i) {
- if (np[i].end == 0)
- continue;
-
- np[i].bootmap_pages = bootmem_bootmap_pages(np[i].end -
- np[i].start);
- bootmem_pages += np[i].bootmap_pages;
- }
-
- high_memory = __va(memend_pfn << PAGE_SHIFT);
-
- /*
- * This doesn't seem to be used by the Linux memory
- * manager any more. If we can get rid of it, we
- * also get rid of some of the stuff above as well.
- *
- * Note: max_low_pfn and max_pfn reflect the number
- * of _pages_ in the system, not the maximum PFN.
- */
- max_low_pfn = memend_pfn - O_PFN_DOWN(PHYS_OFFSET);
- max_pfn = memend_pfn - O_PFN_DOWN(PHYS_OFFSET);
-
- return bootmem_pages;
-}
-