x86: Make 64 bit use early_res instead of bootmem before slab

Finally we can use early_res to replace bootmem for x86_64 now.

Still can use CONFIG_NO_BOOTMEM to enable it or not.

-v2: fix 32bit compiling about MAX_DMA32_PFN
-v3: folded bug fix from LKML message below

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <4B747239.4070907@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

3 files changed, 14 insertions, 0 deletions

diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h
index b10ec49ee2dd..266ab9291232 100644
--- a/include/linux/bootmem.h
+++ b/include/linux/bootmem.h
@@ -23,6 +23,7 @@ extern unsigned long max_pfn;
 extern unsigned long saved_max_pfn;
 #endif
 
+#ifndef CONFIG_NO_BOOTMEM
 /*
  * node_bootmem_map is a map pointer - the bits represent all physical 
  * memory pages (including holes) on the node.
@@ -37,6 +38,7 @@ typedef struct bootmem_data {
 } bootmem_data_t;
 
 extern bootmem_data_t bootmem_node_data[];
+#endif
 
 extern unsigned long bootmem_bootmap_pages(unsigned long);
 
@@ -46,6 +48,7 @@ extern unsigned long init_bootmem_node(pg_data_t *pgdat,
                                        unsigned long endpfn);
 extern unsigned long init_bootmem(unsigned long addr, unsigned long memend);
 
+unsigned long free_all_memory_core_early(int nodeid);
 extern unsigned long free_all_bootmem_node(pg_data_t *pgdat);
 extern unsigned long free_all_bootmem(void);
 
@@ -84,6 +87,10 @@ extern void *__alloc_bootmem_node(pg_data_t *pgdat,
                                   unsigned long size,
                                   unsigned long align,
                                   unsigned long goal);
+void *__alloc_bootmem_node_high(pg_data_t *pgdat,
+                                  unsigned long size,
+                                  unsigned long align,
+                                  unsigned long goal);
 extern void *__alloc_bootmem_node_nopanic(pg_data_t *pgdat,
                                   unsigned long size,
                                   unsigned long align,
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 8b2fa8593c61..f2c5b3cee8a1 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -12,6 +12,7 @@
 #include <linux/prio_tree.h>
 #include <linux/debug_locks.h>
 #include <linux/mm_types.h>
+#include <linux/range.h>
 
 struct mempolicy;
 struct anon_vma;
@@ -1049,6 +1050,10 @@ extern void get_pfn_range_for_nid(unsigned int nid,
 extern unsigned long find_min_pfn_with_active_regions(void);
 extern void free_bootmem_with_active_regions(int nid,
                                                 unsigned long max_low_pfn);
+int add_from_early_node_map(struct range *range, int az,
+                                   int nr_range, int nid);
+void *__alloc_memory_core_early(int nodeid, u64 size, u64 align,
+                                 u64 goal, u64 limit);
 typedef int (*work_fn_t)(unsigned long, unsigned long, void *);
 extern void work_with_active_regions(int nid, work_fn_t work_fn, void *data);
 extern void sparse_memory_present_with_active_regions(int nid);
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 30fe668c2542..eae8387b6007 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -620,7 +620,9 @@ typedef struct pglist_data {
         struct page_cgroup *node_page_cgroup;
 #endif
 #endif
+#ifndef CONFIG_NO_BOOTMEM
         struct bootmem_data *bdata;
+#endif
 #ifdef CONFIG_MEMORY_HOTPLUG
         /*
          * Must be held any time you expect node_start_pfn, node_present_pages