1 files changed, 30 insertions, 15 deletions

diff --git a/mm/bootmem.c b/mm/bootmem.c
index d7140c008ba8..daf92713f7de 100644
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -37,16 +37,6 @@ static struct list_head bdata_list __initdata = LIST_HEAD_INIT(bdata_list);
 
 static int bootmem_debug;
 
-/*
- * If an arch needs to apply workarounds to bootmem allocation, it can
- * set CONFIG_HAVE_ARCH_BOOTMEM and define a wrapper around
- * __alloc_bootmem_core().
- */
-#ifndef CONFIG_HAVE_ARCH_BOOTMEM
-#define alloc_bootmem_core(bdata, size, align, goal, limit)		\
-	__alloc_bootmem_core((bdata), (size), (align), (goal), (limit))
-#endif
-
 static int __init bootmem_debug_setup(char *buf)
 {
 	bootmem_debug = 1;
@@ -436,9 +426,9 @@ static unsigned long align_off(struct bootmem_data *bdata, unsigned long off,
 	return ALIGN(base + off, align) - base;
 }
 
-static void * __init __alloc_bootmem_core(struct bootmem_data *bdata,
-				unsigned long size, unsigned long align,
-				unsigned long goal, unsigned long limit)
+static void * __init alloc_bootmem_core(struct bootmem_data *bdata,
+					unsigned long size, unsigned long align,
+					unsigned long goal, unsigned long limit)
 {
 	unsigned long fallback = 0;
 	unsigned long min, max, start, sidx, midx, step;
@@ -538,17 +528,34 @@ find_block:
 	return NULL;
 }
 
+static void * __init alloc_arch_preferred_bootmem(bootmem_data_t *bdata,
+					unsigned long size, unsigned long align,
+					unsigned long goal, unsigned long limit)
+{
+#ifdef CONFIG_HAVE_ARCH_BOOTMEM
+	bootmem_data_t *p_bdata;
+
+	p_bdata = bootmem_arch_preferred_node(bdata, size, align, goal, limit);
+	if (p_bdata)
+		return alloc_bootmem_core(p_bdata, size, align, goal, limit);
+#endif
+	return NULL;
+}
+
 static void * __init ___alloc_bootmem_nopanic(unsigned long size,
 					unsigned long align,
 					unsigned long goal,
 					unsigned long limit)
 {
 	bootmem_data_t *bdata;
+	void *region;
 
 restart:
-	list_for_each_entry(bdata, &bdata_list, list) {
-		void *region;
+	region = alloc_arch_preferred_bootmem(NULL, size, align, goal, limit);
+	if (region)
+		return region;
 
+	list_for_each_entry(bdata, &bdata_list, list) {
 		if (goal && bdata->node_low_pfn <= PFN_DOWN(goal))
 			continue;
 		if (limit && bdata->node_min_pfn >= PFN_DOWN(limit))
@@ -626,6 +633,10 @@ static void * __init ___alloc_bootmem_node(bootmem_data_t *bdata,
 {
 	void *ptr;
 
+	ptr = alloc_arch_preferred_bootmem(bdata, size, align, goal, limit);
+	if (ptr)
+		return ptr;
+
 	ptr = alloc_bootmem_core(bdata, size, align, goal, limit);
 	if (ptr)
 		return ptr;
@@ -682,6 +693,10 @@ void * __init __alloc_bootmem_node_nopanic(pg_data_t *pgdat, unsigned long size,
 {
 	void *ptr;
 
+	ptr = alloc_arch_preferred_bootmem(pgdat->bdata, size, align, goal, 0);
+	if (ptr)
+		return ptr;
+
 	ptr = alloc_bootmem_core(pgdat->bdata, size, align, goal, 0);
 	if (ptr)
 		return ptr;