X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=mm%2Fmemblock.c;h=625905523c2a1592f539c46f6721723d62376648;hb=c2a65d3d85a08b6c93da7b8664c89d1cd0682adf;hp=931eef145af5eed370ed6f2b0c9dc577295be6ff;hpb=3d02a9265c5414b07b372dde616174d3c89071a0;p=~andy%2Flinux

diff --git a/mm/memblock.c b/mm/memblock.c
index 931eef145af..625905523c2 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -930,6 +930,30 @@ int __init_memblock memblock_is_region_reserved(phys_addr_t base, phys_addr_t si
 	return memblock_overlaps_region(&memblock.reserved, base, size) >= 0;
 }
 
+void __init_memblock memblock_trim_memory(phys_addr_t align)
+{
+	int i;
+	phys_addr_t start, end, orig_start, orig_end;
+	struct memblock_type *mem = &memblock.memory;
+
+	for (i = 0; i < mem->cnt; i++) {
+		orig_start = mem->regions[i].base;
+		orig_end = mem->regions[i].base + mem->regions[i].size;
+		start = round_up(orig_start, align);
+		end = round_down(orig_end, align);
+
+		if (start == orig_start && end == orig_end)
+			continue;
+
+		if (start < end) {
+			mem->regions[i].base = start;
+			mem->regions[i].size = end - start;
+		} else {
+			memblock_remove_region(mem, i);
+			i--;
+		}
+	}
+}
 
 void __init_memblock memblock_set_current_limit(phys_addr_t limit)
 {