Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[deliverable/linux.git] / mm / memblock.c

diff --git a/mm/memblock.c b/mm/memblock.c
index 88adc8afb6103d6c1ba2eb7e20c1ed226cf2b1d3..1bcd9b97056481524978ed295e25051c5bbe7536 100644 (file)
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -92,9 +92,58 @@ 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)
+{
+       phys_addr_t this_start, this_end, cand;
+       u64 i;
+       int curr = movablemem_map.nr_map - 1;
+
+       /* 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);
+
+restart:
+               if (this_end <= this_start || this_end < size)
+                       continue;
+
+               for (; curr >= 0; curr--) {
+                       if ((movablemem_map.map[curr].start_pfn << PAGE_SHIFT)
+                           < this_end)
+                               break;
+               }
+
+               cand = round_down(this_end - size, align);
+               if (curr >= 0 &&
+                   cand < movablemem_map.map[curr].end_pfn << PAGE_SHIFT) {
+                       this_end = movablemem_map.map[curr].start_pfn
+                                  << PAGE_SHIFT;
+                       goto restart;
+               }
+
+               if (cand >= this_start)
+                       return cand;
+       }
+
+       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)
@@ -123,6 +172,7 @@ phys_addr_t __init_memblock memblock_find_in_range_node(phys_addr_t start,
        }
        return 0;
 }
+#endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */
 
 /**
  * memblock_find_in_range - find free area in given range
@@ -828,6 +878,23 @@ phys_addr_t __init memblock_phys_mem_size(void)
        return memblock.memory.total_size;
 }
 
+phys_addr_t __init memblock_mem_size(unsigned long limit_pfn)
+{
+       unsigned long pages = 0;
+       struct memblock_region *r;
+       unsigned long start_pfn, end_pfn;
+
+       for_each_memblock(memory, r) {
+               start_pfn = memblock_region_memory_base_pfn(r);
+               end_pfn = memblock_region_memory_end_pfn(r);
+               start_pfn = min_t(unsigned long, start_pfn, limit_pfn);
+               end_pfn = min_t(unsigned long, end_pfn, limit_pfn);
+               pages += end_pfn - start_pfn;
+       }
+
+       return (phys_addr_t)pages << PAGE_SHIFT;
+}
+
 /* lowest address */
 phys_addr_t __init_memblock memblock_start_of_DRAM(void)
 {