powerpc/mm: Cleanup careful_allocation(): consolidate memset()

Both users of careful_allocation() immediately memset() the
result.  So, just do it in one place.

Also give careful_allocation() a 'z' prefix to bring it in
line with kzmalloc() and friends.

Signed-off-by: Dave Hansen <dave@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 5 insertions, 6 deletions

diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 9ec9939f9fb0..7393bd76d698 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -824,7 +824,7 @@ static void __init dump_numa_memory_topology(void)
  *
  * Returns the virtual address of the memory.
  */
-static void __init *careful_allocation(int nid, unsigned long size,
+static void __init *careful_zallocation(int nid, unsigned long size,
                                        unsigned long align,
                                        unsigned long end_pfn)
 {
@@ -864,6 +864,7 @@ static void __init *careful_allocation(int nid, unsigned long size,
                 dbg("alloc_bootmem %p %lx\n", ret, size);
         }
 
+        memset(ret, 0, size);
         return ret;
 }
 
@@ -971,10 +972,9 @@ void __init do_init_bootmem(void)
                  * previous nodes' bootmem to be initialized and have
                  * all reserved areas marked.
                  */
-                NODE_DATA(nid) = careful_allocation(nid,
+                NODE_DATA(nid) = careful_zallocation(nid,
                                         sizeof(struct pglist_data),
                                         SMP_CACHE_BYTES, end_pfn);
-                memset(NODE_DATA(nid), 0, sizeof(struct pglist_data));
 
                 dbg("node %d\n", nid);
                 dbg("NODE_DATA() = %p\n", NODE_DATA(nid));
@@ -990,10 +990,9 @@ void __init do_init_bootmem(void)
                 dbg("end_paddr = %lx\n", end_pfn << PAGE_SHIFT);
 
                 bootmap_pages = bootmem_bootmap_pages(end_pfn - start_pfn);
-                bootmem_vaddr = careful_allocation(nid,
+                bootmem_vaddr = careful_zallocation(nid,
                                         bootmap_pages << PAGE_SHIFT,
                                         PAGE_SIZE, end_pfn);
-                memset(bootmem_vaddr, 0, bootmap_pages << PAGE_SHIFT);
 
                 dbg("bootmap_vaddr = %p\n", bootmem_vaddr);
 
@@ -1004,7 +1003,7 @@ void __init do_init_bootmem(void)
                 free_bootmem_with_active_regions(nid, end_pfn);
                 /*
                  * Be very careful about moving this around.  Future
-                 * calls to careful_allocation() depend on this getting
+                 * calls to careful_zallocation() depend on this getting
                  * done correctly.
                  */
                 mark_reserved_regions_for_nid(nid);