diff --git a/arch/x86/include/asm/acpi.h b/arch/x86/include/asm/acpi.h
index 12e0e7dd869c6f966efd4415c740db2f39bd0eb7..416d865eae39bdb5eecb670aeaeffdc2a3f2bd21 100644
--- a/arch/x86/include/asm/acpi.h
+++ b/arch/x86/include/asm/acpi.h
@@ -183,8 +183,6 @@ static inline void disable_acpi(void) { }
 
 #define ARCH_HAS_POWER_INIT	1
 
-struct bootnode;
-
 #ifdef CONFIG_ACPI_NUMA
 extern int acpi_numa;
 extern int x86_acpi_numa_init(void);
diff --git a/arch/x86/include/asm/amd_nb.h b/arch/x86/include/asm/amd_nb.h
index 331682231bb43c6a2a7ff7c40c1352cdeddd82f1..67f87f25761169a54e99795cecab98fed034aca7 100644
--- a/arch/x86/include/asm/amd_nb.h
+++ b/arch/x86/include/asm/amd_nb.h
@@ -11,7 +11,6 @@ struct amd_nb_bus_dev_range {
 
 extern const struct pci_device_id amd_nb_misc_ids[];
 extern const struct amd_nb_bus_dev_range amd_nb_bus_dev_ranges[];
-struct bootnode;
 
 extern bool early_is_amd_nb(u32 value);
 extern int amd_cache_northbridges(void);
diff --git a/arch/x86/include/asm/numa_32.h b/arch/x86/include/asm/numa_32.h
index 242522fe9f8da557120de7603b8fdee74176c37a..7e54b64623a98a3cd2d26d0f1aa48801a40c8f58 100644
--- a/arch/x86/include/asm/numa_32.h
+++ b/arch/x86/include/asm/numa_32.h
@@ -3,8 +3,6 @@
 
 extern int numa_off;
 
-extern int pxm_to_nid(int pxm);
-
 #ifdef CONFIG_HIGHMEM
 extern void set_highmem_pages_init(void);
 #else
diff --git a/arch/x86/include/asm/numa_64.h b/arch/x86/include/asm/numa_64.h
index 12461ebec704dd873cea7c61bc2fd27dc141738e..794da6de6892c3ecf631a15a419de33427ad4455 100644
--- a/arch/x86/include/asm/numa_64.h
+++ b/arch/x86/include/asm/numa_64.h
@@ -3,18 +3,11 @@
 
 #include <linux/nodemask.h>
 
-struct bootnode {
-	u64 start;
-	u64 end;
-};
-
 #define ZONE_ALIGN (1UL << (MAX_ORDER+PAGE_SHIFT))
 
 extern int numa_off;
 
 extern unsigned long numa_free_all_bootmem(void);
-extern void setup_node_bootmem(int nodeid, unsigned long start,
-			       unsigned long end);
 
 #ifdef CONFIG_NUMA
 /*
diff --git a/arch/x86/mm/numa_64.c b/arch/x86/mm/numa_64.c
index 7f83adec04828b4d9b2c283bbc4d4e77b9104fd9..287ae798935fb8ea16450ee639bd17aff1e69c9b 100644
--- a/arch/x86/mm/numa_64.c
+++ b/arch/x86/mm/numa_64.c
@@ -95,7 +95,7 @@ int __init numa_add_memblk(int nid, u64 start, u64 end)
 }
 
 /* Initialize bootmem allocator for a node */
-void __init
+static void __init
 setup_node_bootmem(int nid, unsigned long start, unsigned long end)
 {
 	const u64 nd_low = (u64)MAX_DMA_PFN << PAGE_SHIFT;