mm: replace CONFIG_NEED_MULTIPLE_NODES with CONFIG_NUMA

After removal of DISCINTIGMEM the NEED_MULTIPLE_NODES and NUMA configuration options are equivalent. Drop CONFIG_NEED_MULTIPLE_NODES and use CONFIG_NUMA instead. Done with $ sed -i 's/CONFIG_NEED_MULTIPLE_NODES/CONFIG_NUMA/' \ $(git grep -wl CONFIG_NEED_MULTIPLE_NODES) $ sed -i 's/NEED_MULTIPLE_NODES/NUMA/' \ $(git grep -wl NEED_MULTIPLE_NODES) with manual tweaks afterwards. [rppt@linux.ibm.com: fix arm boot crash] Link: https://lkml.kernel.org/r/YMj9vHhHOiCVN4BF@linux.ibm.com Link: https://lkml.kernel.org/r/20210608091316.3622-9-rppt@kernel.org Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: David Hildenbrand <david@redhat.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Matt Turner <mattst88@gmail.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Vineet Gupta <vgupta@synopsys.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-06-28 19:43:01 -07:00 · 2021-06-28 19:43:01 -07:00 · a9ee6cf5c6
commit a9ee6cf5c6
parent 48d9f3355a
36 changed files with 59 additions and 69 deletions
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@ -1035,7 +1035,7 @@ config NODES_SHIFT
 	int "Maximum NUMA Nodes (as a power of 2)"
 	range 1 10
 	default "4"
-	depends on NEED_MULTIPLE_NODES
+	depends on NUMA
 	help
 	  Specify the maximum number of NUMA Nodes available on the target
 	  system.  Increases memory reserved to accommodate various tables.
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@ -302,7 +302,7 @@ config NODES_SHIFT
 	int "Max num nodes shift(3-10)"
 	range 3 10
 	default "10"
-	depends on NEED_MULTIPLE_NODES
+	depends on NUMA
 	help
 	  This option specifies the maximum number of nodes in your SSI system.
 	  MAX_NUMNODES will be 2^(This value).
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@ -2867,7 +2867,7 @@ config RANDOMIZE_BASE_MAX_OFFSET
 config NODES_SHIFT
 	int
 	default "6"
-	depends on NEED_MULTIPLE_NODES
+	depends on NUMA

 config HW_PERF_EVENTS
 	bool "Enable hardware performance counter support for perf events"
--- a/arch/mips/include/asm/mmzone.h
+++ b/arch/mips/include/asm/mmzone.h
@ -8,7 +8,7 @@

 #include <asm/page.h>

-#ifdef CONFIG_NEED_MULTIPLE_NODES
+#ifdef CONFIG_NUMA
 # include <mmzone.h>
 #endif

--- a/arch/mips/include/asm/page.h
+++ b/arch/mips/include/asm/page.h
@ -239,7 +239,7 @@ static inline int pfn_valid(unsigned long pfn)

 /* pfn_valid is defined in linux/mmzone.h */

-#elif defined(CONFIG_NEED_MULTIPLE_NODES)
+#elif defined(CONFIG_NUMA)

 #define pfn_valid(pfn)							\
 ({									\
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@ -394,7 +394,7 @@ void maar_init(void)
 	}
 }

-#ifndef CONFIG_NEED_MULTIPLE_NODES
+#ifndef CONFIG_NUMA
 void __init paging_init(void)
 {
 	unsigned long max_zone_pfns[MAX_NR_ZONES];
@ -473,7 +473,7 @@ void __init mem_init(void)
 				0x80000000 - 4, KCORE_TEXT);
 #endif
 }
-#endif /* !CONFIG_NEED_MULTIPLE_NODES */
+#endif /* !CONFIG_NUMA */

 void free_init_pages(const char *what, unsigned long begin, unsigned long end)
 {
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@ -671,7 +671,7 @@ config NODES_SHIFT
 	int
 	default "8" if PPC64
 	default "4"
-	depends on NEED_MULTIPLE_NODES
+	depends on NUMA

 config USE_PERCPU_NUMA_NODE_ID
 	def_bool y
--- a/arch/powerpc/include/asm/mmzone.h
+++ b/arch/powerpc/include/asm/mmzone.h
@ -18,7 +18,7 @@
 *    flags field of the struct page
 */

-#ifdef CONFIG_NEED_MULTIPLE_NODES
+#ifdef CONFIG_NUMA

 extern struct pglist_data *node_data[];
 /*
@ -41,7 +41,7 @@ u64 memory_hotplug_max(void);

 #else
 #define memory_hotplug_max() memblock_end_of_DRAM()
-#endif /* CONFIG_NEED_MULTIPLE_NODES */
+#endif /* CONFIG_NUMA */
 #ifdef CONFIG_FA_DUMP
 #define __HAVE_ARCH_RESERVED_KERNEL_PAGES
 #endif
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@ -788,7 +788,7 @@ static void * __init pcpu_alloc_bootmem(unsigned int cpu, size_t size,
 					size_t align)
 {
 	const unsigned long goal = __pa(MAX_DMA_ADDRESS);
-#ifdef CONFIG_NEED_MULTIPLE_NODES
+#ifdef CONFIG_NUMA
 	int node = early_cpu_to_node(cpu);
 	void *ptr;

--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@ -1047,7 +1047,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
 			zalloc_cpumask_var_node(&per_cpu(cpu_coregroup_map, cpu),
 						GFP_KERNEL, cpu_to_node(cpu));

-#ifdef CONFIG_NEED_MULTIPLE_NODES
+#ifdef CONFIG_NUMA
 		/*
 		 * numa_node_id() works after this.
 		 */
--- a/arch/powerpc/kexec/core.c
+++ b/arch/powerpc/kexec/core.c
@ -68,11 +68,11 @@ void machine_kexec_cleanup(struct kimage *image)
 void arch_crash_save_vmcoreinfo(void)
 {

-#ifdef CONFIG_NEED_MULTIPLE_NODES
+#ifdef CONFIG_NUMA
 	VMCOREINFO_SYMBOL(node_data);
 	VMCOREINFO_LENGTH(node_data, MAX_NUMNODES);
 #endif
-#ifndef CONFIG_NEED_MULTIPLE_NODES
+#ifndef CONFIG_NUMA
 	VMCOREINFO_SYMBOL(contig_page_data);
 #endif
 #if defined(CONFIG_PPC64) && defined(CONFIG_SPARSEMEM_VMEMMAP)
--- a/arch/powerpc/mm/Makefile
+++ b/arch/powerpc/mm/Makefile
@ -13,7 +13,7 @@ obj-y				:= fault.o mem.o pgtable.o mmap.o maccess.o \
 obj-$(CONFIG_PPC_MMU_NOHASH)	+= nohash/
 obj-$(CONFIG_PPC_BOOK3S_32)	+= book3s32/
 obj-$(CONFIG_PPC_BOOK3S_64)	+= book3s64/
-obj-$(CONFIG_NEED_MULTIPLE_NODES) += numa.o
+obj-$(CONFIG_NUMA) += numa.o
 obj-$(CONFIG_PPC_MM_SLICES)	+= slice.o
 obj-$(CONFIG_HUGETLB_PAGE)	+= hugetlbpage.o
 obj-$(CONFIG_NOT_COHERENT_CACHE) += dma-noncoherent.o
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@ -127,7 +127,7 @@ void __ref arch_remove_memory(int nid, u64 start, u64 size,
 }
 #endif

-#ifndef CONFIG_NEED_MULTIPLE_NODES
+#ifndef CONFIG_NUMA
 void __init mem_topology_setup(void)
 {
 	max_low_pfn = max_pfn = memblock_end_of_DRAM() >> PAGE_SHIFT;
@ -162,7 +162,7 @@ static int __init mark_nonram_nosave(void)

 	return 0;
 }
-#else /* CONFIG_NEED_MULTIPLE_NODES */
+#else /* CONFIG_NUMA */
 static int __init mark_nonram_nosave(void)
 {
 	return 0;
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@ -332,7 +332,7 @@ config NODES_SHIFT
 	int "Maximum NUMA Nodes (as a power of 2)"
 	range 1 10
 	default "2"
-	depends on NEED_MULTIPLE_NODES
+	depends on NUMA
 	help
 	  Specify the maximum number of NUMA Nodes available on the target
 	  system.  Increases memory reserved to accommodate various tables.
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@ -475,7 +475,7 @@ config NUMA

 config NODES_SHIFT
 	int
-	depends on NEED_MULTIPLE_NODES
+	depends on NUMA
 	default "1"

 config SCHED_SMT
--- a/arch/sh/include/asm/mmzone.h
+++ b/arch/sh/include/asm/mmzone.h
@ -2,7 +2,7 @@
 #ifndef __ASM_SH_MMZONE_H
 #define __ASM_SH_MMZONE_H

-#ifdef CONFIG_NEED_MULTIPLE_NODES
+#ifdef CONFIG_NUMA
 #include <linux/numa.h>

 extern struct pglist_data *node_data[];
@ -31,7 +31,7 @@ static inline void
 setup_bootmem_node(int nid, unsigned long start, unsigned long end)
 {
 }
-#endif /* CONFIG_NEED_MULTIPLE_NODES */
+#endif /* CONFIG_NUMA */

 /* Platform specific mem init */
 void __init plat_mem_setup(void);
--- a/arch/sh/kernel/topology.c
+++ b/arch/sh/kernel/topology.c
@ -46,7 +46,7 @@ static int __init topology_init(void)
 {
 	int i, ret;

-#ifdef CONFIG_NEED_MULTIPLE_NODES
+#ifdef CONFIG_NUMA
 	for_each_online_node(i)
 		register_one_node(i);
 #endif
--- a/arch/sh/mm/Kconfig
+++ b/arch/sh/mm/Kconfig
@ -120,7 +120,7 @@ config NODES_SHIFT
 	int
 	default "3" if CPU_SUBTYPE_SHX3
 	default "1"
-	depends on NEED_MULTIPLE_NODES
+	depends on NUMA

 config ARCH_FLATMEM_ENABLE
 	def_bool y
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@ -211,7 +211,7 @@ void __init allocate_pgdat(unsigned int nid)

 	get_pfn_range_for_nid(nid, &start_pfn, &end_pfn);

-#ifdef CONFIG_NEED_MULTIPLE_NODES
+#ifdef CONFIG_NUMA
 	NODE_DATA(nid) = memblock_alloc_try_nid(
 				sizeof(struct pglist_data),
 				SMP_CACHE_BYTES, MEMBLOCK_LOW_LIMIT,
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@ -265,7 +265,7 @@ config NODES_SHIFT
 	int "Maximum NUMA Nodes (as a power of 2)"
 	range 4 5 if SPARC64
 	default "5"
-	depends on NEED_MULTIPLE_NODES
+	depends on NUMA
 	help
 	  Specify the maximum number of NUMA Nodes available on the target
 	  system.  Increases memory reserved to accommodate various tables.
--- a/arch/sparc/include/asm/mmzone.h
+++ b/arch/sparc/include/asm/mmzone.h
@ -2,7 +2,7 @@
 #ifndef _SPARC64_MMZONE_H
 #define _SPARC64_MMZONE_H

-#ifdef CONFIG_NEED_MULTIPLE_NODES
+#ifdef CONFIG_NUMA

 #include <linux/cpumask.h>

@ -13,6 +13,6 @@ extern struct pglist_data *node_data[];
 extern int numa_cpu_lookup_table[];
 extern cpumask_t numa_cpumask_lookup_table[];

-#endif /* CONFIG_NEED_MULTIPLE_NODES */
+#endif /* CONFIG_NUMA */

 #endif /* _SPARC64_MMZONE_H */
--- a/arch/sparc/kernel/smp_64.c
+++ b/arch/sparc/kernel/smp_64.c
@ -1546,7 +1546,7 @@ static void * __init pcpu_alloc_bootmem(unsigned int cpu, size_t size,
 					size_t align)
 {
 	const unsigned long goal = __pa(MAX_DMA_ADDRESS);
-#ifdef CONFIG_NEED_MULTIPLE_NODES
+#ifdef CONFIG_NUMA
 	int node = cpu_to_node(cpu);
 	void *ptr;

--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@ -903,7 +903,7 @@ struct node_mem_mask {
 static struct node_mem_mask node_masks[MAX_NUMNODES];
 static int num_node_masks;

-#ifdef CONFIG_NEED_MULTIPLE_NODES
+#ifdef CONFIG_NUMA

 struct mdesc_mlgroup {
 	u64	node;
@ -1059,7 +1059,7 @@ static void __init allocate_node_data(int nid)
 {
 	struct pglist_data *p;
 	unsigned long start_pfn, end_pfn;
-#ifdef CONFIG_NEED_MULTIPLE_NODES
+#ifdef CONFIG_NUMA

 	NODE_DATA(nid) = memblock_alloc_node(sizeof(struct pglist_data),
 					     SMP_CACHE_BYTES, nid);
@ -1080,7 +1080,7 @@ static void __init allocate_node_data(int nid)

 static void init_node_masks_nonnuma(void)
 {
-#ifdef CONFIG_NEED_MULTIPLE_NODES
+#ifdef CONFIG_NUMA
 	int i;
 #endif

@ -1090,7 +1090,7 @@ static void init_node_masks_nonnuma(void)
 	node_masks[0].match = 0;
 	num_node_masks = 1;

-#ifdef CONFIG_NEED_MULTIPLE_NODES
+#ifdef CONFIG_NUMA
 	for (i = 0; i < NR_CPUS; i++)
 		numa_cpu_lookup_table[i] = 0;

@ -1098,7 +1098,7 @@ static void init_node_masks_nonnuma(void)
 #endif
 }

-#ifdef CONFIG_NEED_MULTIPLE_NODES
+#ifdef CONFIG_NUMA
 struct pglist_data *node_data[MAX_NUMNODES];

 EXPORT_SYMBOL(numa_cpu_lookup_table);
@ -2487,7 +2487,7 @@ int page_in_phys_avail(unsigned long paddr)

 static void __init register_page_bootmem_info(void)
 {
-#ifdef CONFIG_NEED_MULTIPLE_NODES
+#ifdef CONFIG_NUMA
 	int i;

 	for_each_online_node(i)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@ -1597,7 +1597,7 @@ config NODES_SHIFT
 	default "10" if MAXSMP
 	default "6" if X86_64
 	default "3"
-	depends on NEED_MULTIPLE_NODES
+	depends on NUMA
 	help
 	  Specify the maximum number of NUMA Nodes available on the target
 	  system.  Increases memory reserved to accommodate various tables.
--- a/arch/x86/kernel/setup_percpu.c
+++ b/arch/x86/kernel/setup_percpu.c
@ -66,7 +66,7 @@ EXPORT_SYMBOL(__per_cpu_offset);
 */
 static bool __init pcpu_need_numa(void)
 {
-#ifdef CONFIG_NEED_MULTIPLE_NODES
+#ifdef CONFIG_NUMA
 	pg_data_t *last = NULL;
 	unsigned int cpu;

@ -101,7 +101,7 @@ static void * __init pcpu_alloc_bootmem(unsigned int cpu, unsigned long size,
 					unsigned long align)
 {
 	const unsigned long goal = __pa(MAX_DMA_ADDRESS);
-#ifdef CONFIG_NEED_MULTIPLE_NODES
+#ifdef CONFIG_NUMA
 	int node = early_cpu_to_node(cpu);
 	void *ptr;

@ -140,7 +140,7 @@ static void __init pcpu_fc_free(void *ptr, size_t size)

 static int __init pcpu_cpu_distance(unsigned int from, unsigned int to)
 {
-#ifdef CONFIG_NEED_MULTIPLE_NODES
+#ifdef CONFIG_NUMA
 	if (early_cpu_to_node(from) == early_cpu_to_node(to))
 		return LOCAL_DISTANCE;
 	else
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@ -651,7 +651,7 @@ void __init find_low_pfn_range(void)
 		highmem_pfn_init();
 }

-#ifndef CONFIG_NEED_MULTIPLE_NODES
+#ifndef CONFIG_NUMA
 void __init initmem_init(void)
 {
 #ifdef CONFIG_HIGHMEM
@ -677,7 +677,7 @@ void __init initmem_init(void)

 	setup_bootmem_allocator();
 }
-#endif /* !CONFIG_NEED_MULTIPLE_NODES */
+#endif /* !CONFIG_NUMA */

 void __init setup_bootmem_allocator(void)
 {
--- a/include/asm-generic/topology.h
+++ b/include/asm-generic/topology.h
@ -45,7 +45,7 @@
 #endif

 #ifndef cpumask_of_node
-  #ifdef CONFIG_NEED_MULTIPLE_NODES
+  #ifdef CONFIG_NUMA
    #define cpumask_of_node(node)	((node) == 0 ? cpu_online_mask : cpu_none_mask)
  #else
    #define cpumask_of_node(node)	((void)(node), cpu_online_mask)
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@ -50,7 +50,7 @@ struct memblock_region {
 	phys_addr_t base;
 	phys_addr_t size;
 	enum memblock_flags flags;
-#ifdef CONFIG_NEED_MULTIPLE_NODES
+#ifdef CONFIG_NUMA
 	int nid;
 #endif
 };
@ -347,7 +347,7 @@ int __init deferred_page_init_max_threads(const struct cpumask *node_cpumask);
 int memblock_set_node(phys_addr_t base, phys_addr_t size,
 		      struct memblock_type *type, int nid);

-#ifdef CONFIG_NEED_MULTIPLE_NODES
+#ifdef CONFIG_NUMA
 static inline void memblock_set_region_node(struct memblock_region *r, int nid)
 {
 	r->nid = nid;
@ -366,7 +366,7 @@ static inline int memblock_get_region_node(const struct memblock_region *r)
 {
 	return 0;
 }
-#endif /* CONFIG_NEED_MULTIPLE_NODES */
+#endif /* CONFIG_NUMA */

 /* Flags for memblock allocation APIs */
 #define MEMBLOCK_ALLOC_ANYWHERE	(~(phys_addr_t)0)
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@ -46,7 +46,7 @@ extern int sysctl_page_lock_unfairness;

 void init_mm_internals(void);

-#ifndef CONFIG_NEED_MULTIPLE_NODES	/* Don't use mapnrs, do it properly */
+#ifndef CONFIG_NUMA		/* Don't use mapnrs, do it properly */
 extern unsigned long max_mapnr;

 static inline void set_max_mapnr(unsigned long limit)
@ -2460,7 +2460,7 @@ extern void get_pfn_range_for_nid(unsigned int nid,
 			unsigned long *start_pfn, unsigned long *end_pfn);
 extern unsigned long find_min_pfn_with_active_regions(void);

-#ifndef CONFIG_NEED_MULTIPLE_NODES
+#ifndef CONFIG_NUMA
 static inline int early_pfn_to_nid(unsigned long pfn)
 {
 	return 0;
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@ -1043,17 +1043,17 @@ extern int percpu_pagelist_high_fraction;
 extern char numa_zonelist_order[];
 #define NUMA_ZONELIST_ORDER_LEN	16

-#ifndef CONFIG_NEED_MULTIPLE_NODES
+#ifndef CONFIG_NUMA

 extern struct pglist_data contig_page_data;
 #define NODE_DATA(nid)		(&contig_page_data)
 #define NODE_MEM_MAP(nid)	mem_map

-#else /* CONFIG_NEED_MULTIPLE_NODES */
+#else /* CONFIG_NUMA */

 #include <asm/mmzone.h>

-#endif /* !CONFIG_NEED_MULTIPLE_NODES */
+#endif /* !CONFIG_NUMA */

 extern struct pglist_data *first_online_pgdat(void);
 extern struct pglist_data *next_online_pgdat(struct pglist_data *pgdat);
--- a/kernel/crash_core.c
+++ b/kernel/crash_core.c
@ -455,7 +455,7 @@ static int __init crash_save_vmcoreinfo_init(void)
 	VMCOREINFO_SYMBOL(_stext);
 	VMCOREINFO_SYMBOL(vmap_area_list);

-#ifndef CONFIG_NEED_MULTIPLE_NODES
+#ifndef CONFIG_NUMA
 	VMCOREINFO_SYMBOL(mem_map);
 	VMCOREINFO_SYMBOL(contig_page_data);
 #endif
--- a/mm/Kconfig
+++ b/mm/Kconfig
@ -59,15 +59,6 @@ config FLAT_NODE_MEM_MAP
 	def_bool y
 	depends on !SPARSEMEM

-#
-# Both the NUMA code and DISCONTIGMEM use arrays of pg_data_t's
-# to represent different areas of memory.  This variable allows
-# those dependencies to exist individually.
-#
-config NEED_MULTIPLE_NODES
-	def_bool y
-	depends on NUMA
-
 #
 # SPARSEMEM_EXTREME (which is the default) does some bootmem
 # allocations when sparse_init() is called.  If this cannot
--- a/mm/memblock.c
+++ b/mm/memblock.c
@ -92,7 +92,7 @@
 * system initialization completes.
 */

-#ifndef CONFIG_NEED_MULTIPLE_NODES
+#ifndef CONFIG_NUMA
 struct pglist_data __refdata contig_page_data;
 EXPORT_SYMBOL(contig_page_data);
 #endif
@ -607,7 +607,7 @@ static int __init_memblock memblock_add_range(struct memblock_type *type,
 		 * area, insert that portion.
 		 */
 		if (rbase > base) {
-#ifdef CONFIG_NEED_MULTIPLE_NODES
+#ifdef CONFIG_NUMA
 			WARN_ON(nid != memblock_get_region_node(rgn));
 #endif
 			WARN_ON(flags != rgn->flags);
@ -1205,7 +1205,7 @@ void __init_memblock __next_mem_pfn_range(int *idx, int nid,
 int __init_memblock memblock_set_node(phys_addr_t base, phys_addr_t size,
 				      struct memblock_type *type, int nid)
 {
-#ifdef CONFIG_NEED_MULTIPLE_NODES
+#ifdef CONFIG_NUMA
 	int start_rgn, end_rgn;
 	int i, ret;

@ -1849,7 +1849,7 @@ static void __init_memblock memblock_dump(struct memblock_type *type)
 		size = rgn->size;
 		end = base + size - 1;
 		flags = rgn->flags;
-#ifdef CONFIG_NEED_MULTIPLE_NODES
+#ifdef CONFIG_NUMA
 		if (memblock_get_region_node(rgn) != MAX_NUMNODES)
 			snprintf(nid_buf, sizeof(nid_buf), " on node %d",
 				 memblock_get_region_node(rgn));
--- a/mm/memory.c
+++ b/mm/memory.c
@ -90,8 +90,7 @@
 #warning Unfortunate NUMA and NUMA Balancing config, growing page-frame for last_cpupid.
 #endif

-#ifndef CONFIG_NEED_MULTIPLE_NODES
-/* use the per-pgdat data instead for discontigmem - mbligh */
+#ifndef CONFIG_NUMA
 unsigned long max_mapnr;
 EXPORT_SYMBOL(max_mapnr);

--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@ -1634,7 +1634,7 @@ void __free_pages_core(struct page *page, unsigned int order)
 	__free_pages_ok(page, order, FPI_TO_TAIL | FPI_SKIP_KASAN_POISON);
 }

-#ifdef CONFIG_NEED_MULTIPLE_NODES
+#ifdef CONFIG_NUMA

 /*
 * During memory init memblocks map pfns to nids. The search is expensive and
@ -1684,7 +1684,7 @@ int __meminit early_pfn_to_nid(unsigned long pfn)

 	return nid;
 }
-#endif /* CONFIG_NEED_MULTIPLE_NODES */
+#endif /* CONFIG_NUMA */

 void __init memblock_free_pages(struct page *page, unsigned long pfn,
 							unsigned int order)
@ -7438,7 +7438,7 @@ static void __ref alloc_node_mem_map(struct pglist_data *pgdat)
 	pr_debug("%s: node %d, pgdat %08lx, node_mem_map %08lx\n",
 				__func__, pgdat->node_id, (unsigned long)pgdat,
 				(unsigned long)pgdat->node_mem_map);
-#ifndef CONFIG_NEED_MULTIPLE_NODES
+#ifndef CONFIG_NUMA
 	/*
 	 * With no DISCONTIG, the global mem_map is just set as node 0's
 	 */
--- a/mm/sparse.c
+++ b/mm/sparse.c
@ -346,7 +346,7 @@ size_t mem_section_usage_size(void)

 static inline phys_addr_t pgdat_to_phys(struct pglist_data *pgdat)
 {
-#ifndef CONFIG_NEED_MULTIPLE_NODES
+#ifndef CONFIG_NUMA
 	return __pa_symbol(pgdat);
 #else
 	return __pa(pgdat);