[RFC PATCH 03/29] mm: remove CONFIG_HAVE_MEMBLOCK

Mike Rapoport
2018-09-05T15:59:18Z

All architecures use memblock for early memory management. There is no need
for the CONFIG_HAVE_MEMBLOCK configuration option.

Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
---
arch/alpha/Kconfig | 1 -
arch/arc/Kconfig | 1 -
arch/arm/Kconfig | 1 -
arch/arm64/Kconfig | 1 -
arch/c6x/Kconfig | 1 -
arch/h8300/Kconfig | 1 -
arch/hexagon/Kconfig | 1 -
arch/ia64/Kconfig | 1 -
arch/m68k/Kconfig | 1 -
arch/microblaze/Kconfig | 1 -
arch/mips/Kconfig | 1 -
arch/nds32/Kconfig | 1 -
arch/nios2/Kconfig | 1 -
arch/openrisc/Kconfig | 1 -
arch/parisc/Kconfig | 1 -
arch/powerpc/Kconfig | 1 -
arch/riscv/Kconfig | 1 -
arch/s390/Kconfig | 1 -
arch/sh/Kconfig | 1 -
arch/sparc/Kconfig | 1 -
arch/um/Kconfig | 1 -
arch/unicore32/Kconfig | 1 -
arch/x86/Kconfig | 1 -
arch/xtensa/Kconfig | 1 -
drivers/of/fdt.c | 2 -
drivers/of/of_reserved_mem.c | 13 +----
drivers/staging/android/ion/Kconfig | 2 +-
fs/pstore/Kconfig | 1 -
include/linux/bootmem.h | 112 ------------------------------------
include/linux/memblock.h | 2 -
include/linux/mm.h | 2 +-
lib/Kconfig.debug | 3 +-
mm/Kconfig | 5 +-
mm/Makefile | 2 +-
mm/nobootmem.c | 4 --
mm/page_alloc.c | 4 +-
36 files changed, 8 insertions(+), 168 deletions(-)

diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 04de6be..5b4f883 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -31,7 +31,6 @@ config ALPHA
select ODD_RT_SIGACTION
select OLD_SIGSUSPEND
select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
- select HAVE_MEMBLOCK
help
The Alpha is a 64-bit general-purpose processor designed and
marketed by the Digital Equipment Corporation of blessed memory,
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index 04ebead..5260440 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -37,7 +37,6 @@ config ARC
select HAVE_KERNEL_LZMA
select HAVE_KPROBES
select HAVE_KRETPROBES
- select HAVE_MEMBLOCK
select HAVE_MOD_ARCH_SPECIFIC
select HAVE_OPROFILE
select HAVE_PERF_EVENTS
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 61ea3dd..07468e6 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -82,7 +82,6 @@ config ARM
select HAVE_KERNEL_XZ
select HAVE_KPROBES if !XIP_KERNEL && !CPU_ENDIAN_BE32 && !CPU_V7M
select HAVE_KRETPROBES if (HAVE_KPROBES)
- select HAVE_MEMBLOCK
select HAVE_MOD_ARCH_SPECIFIC
select HAVE_NMI
select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 0065653..7d7d813 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -133,7 +133,6 @@ config ARM64
select HAVE_GENERIC_DMA_COHERENT
select HAVE_HW_BREAKPOINT if PERF_EVENTS
select HAVE_IRQ_TIME_ACCOUNTING
- select HAVE_MEMBLOCK
select HAVE_MEMBLOCK_NODE_MAP if NUMA
select HAVE_NMI
select HAVE_PATA_PLATFORM
diff --git a/arch/c6x/Kconfig b/arch/c6x/Kconfig
index a641b0b..833fdb0 100644
--- a/arch/c6x/Kconfig
+++ b/arch/c6x/Kconfig
@@ -13,7 +13,6 @@ config C6X
select GENERIC_ATOMIC64
select GENERIC_IRQ_SHOW
select HAVE_ARCH_TRACEHOOK
- select HAVE_MEMBLOCK
select SPARSE_IRQ
select IRQ_DOMAIN
select OF
diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig
index 5e89d40..d19c6b16 100644
--- a/arch/h8300/Kconfig
+++ b/arch/h8300/Kconfig
@@ -15,7 +15,6 @@ config H8300
select OF
select OF_IRQ
select OF_EARLY_FLATTREE
- select HAVE_MEMBLOCK
select TIMER_OF
select H8300_TMR8
select HAVE_KERNEL_GZIP
diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig
index fb7e0ba..d86e134 100644
--- a/arch/hexagon/Kconfig
+++ b/arch/hexagon/Kconfig
@@ -29,7 +29,6 @@ config HEXAGON
select GENERIC_CLOCKEVENTS_BROADCAST
select MODULES_USE_ELF_RELA
select GENERIC_CPU_DEVICES
- select HAVE_MEMBLOCK
select ARCH_DISCARD_MEMBLOCK
---help---
Qualcomm Hexagon is a processor architecture designed for high
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 2bf4ef7..36773de 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -26,7 +26,6 @@ config IA64
select HAVE_FUNCTION_TRACER
select TTY
select HAVE_ARCH_TRACEHOOK
- select HAVE_MEMBLOCK
select HAVE_MEMBLOCK_NODE_MAP
select HAVE_VIRT_CPU_ACCOUNTING
select ARCH_HAS_DMA_MARK_CLEAN
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index 8c7111d..e88588b 100644
--- a/arch/m68k/Kconfig
+++ b/arch/m68k/Kconfig
@@ -27,7 +27,6 @@ config M68K
select OLD_SIGSUSPEND3
select OLD_SIGACTION
select DMA_NONCOHERENT_OPS if HAS_DMA
- select HAVE_MEMBLOCK
select ARCH_DISCARD_MEMBLOCK

config CPU_BIG_ENDIAN
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index 56379b9..c77eaef 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -28,7 +28,6 @@ config MICROBLAZE
select HAVE_FTRACE_MCOUNT_RECORD
select HAVE_FUNCTION_GRAPH_TRACER
select HAVE_FUNCTION_TRACER
- select HAVE_MEMBLOCK
select HAVE_MEMBLOCK_NODE_MAP
select HAVE_OPROFILE
select IRQ_DOMAIN
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 1a119fd..be5786b 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -60,7 +60,6 @@ config MIPS
select HAVE_IRQ_TIME_ACCOUNTING
select HAVE_KPROBES
select HAVE_KRETPROBES
- select HAVE_MEMBLOCK
select HAVE_MEMBLOCK_NODE_MAP
select HAVE_MOD_ARCH_SPECIFIC
select HAVE_NMI
diff --git a/arch/nds32/Kconfig b/arch/nds32/Kconfig
index 06b1259..605d148 100644
--- a/arch/nds32/Kconfig
+++ b/arch/nds32/Kconfig
@@ -29,7 +29,6 @@ config NDS32
select HANDLE_DOMAIN_IRQ
select HAVE_ARCH_TRACEHOOK
select HAVE_DEBUG_KMEMLEAK
- select HAVE_MEMBLOCK
select HAVE_REGS_AND_STACK_ACCESS_API
select IRQ_DOMAIN
select LOCKDEP_SUPPORT
diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig
index ebfae50..6f43bc4 100644
--- a/arch/nios2/Kconfig
+++ b/arch/nios2/Kconfig
@@ -23,7 +23,6 @@ config NIOS2
select SPARSE_IRQ
select USB_ARCH_HAS_HCD if USB_SUPPORT
select CPU_NO_EFFICIENT_FFS
- select HAVE_MEMBLOCK
select ARCH_DISCARD_MEMBLOCK

config GENERIC_CSUM
diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig
index 25c6c2e..2ba6c6d 100644
--- a/arch/openrisc/Kconfig
+++ b/arch/openrisc/Kconfig
@@ -12,7 +12,6 @@ config OPENRISC
select OF_EARLY_FLATTREE
select IRQ_DOMAIN
select HANDLE_DOMAIN_IRQ
- select HAVE_MEMBLOCK
select GPIOLIB
select HAVE_ARCH_TRACEHOOK
select SPARSE_IRQ
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index 1d6332c..c8a6fda 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -15,7 +15,6 @@ config PARISC
select RTC_CLASS
select RTC_DRV_GENERIC
select INIT_ALL_POSSIBLE
- select HAVE_MEMBLOCK
select BUG
select BUILDTIME_EXTABLE_SORT
select HAVE_PERF_EVENTS
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 304cdce..47c16ae 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -203,7 +203,6 @@ config PPC
select HAVE_KRETPROBES
select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
select HAVE_LIVEPATCH if HAVE_DYNAMIC_FTRACE_WITH_REGS
- select HAVE_MEMBLOCK
select HAVE_MEMBLOCK_NODE_MAP
select HAVE_MOD_ARCH_SPECIFIC
select HAVE_NMI if PERF_EVENTS || (PPC64 && PPC_BOOK3S)
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 63301c8..b92ee2f 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -28,7 +28,6 @@ config RISCV
select GENERIC_STRNLEN_USER
select GENERIC_SMP_IDLE_THREAD
select GENERIC_ATOMIC64 if !64BIT || !RISCV_ISA_A
- select HAVE_MEMBLOCK
select HAVE_MEMBLOCK_NODE_MAP
select HAVE_DMA_CONTIGUOUS
select HAVE_GENERIC_DMA_COHERENT
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index b388e05..2ccad0b 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -154,7 +154,6 @@ config S390
select HAVE_LIVEPATCH
select HAVE_PERF_REGS
select HAVE_PERF_USER_STACK_DUMP
- select HAVE_MEMBLOCK
select HAVE_MEMBLOCK_NODE_MAP
select HAVE_MEMBLOCK_PHYS_MAP
select HAVE_MOD_ARCH_SPECIFIC
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index e254226..f89a172 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -8,7 +8,6 @@ config SUPERH
select HAVE_PATA_PLATFORM
select CLKDEV_LOOKUP
select HAVE_IDE if HAS_IOPORT_MAP
- select HAVE_MEMBLOCK
select HAVE_MEMBLOCK_NODE_MAP
select ARCH_DISCARD_MEMBLOCK
select HAVE_OPROFILE
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 5e8aaee..3b2a2f3 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -45,7 +45,6 @@ config SPARC
select LOCKDEP_SMALL if LOCKDEP
select NEED_DMA_MAP_STATE
select NEED_SG_DMA_LENGTH
- select HAVE_MEMBLOCK

config SPARC32
def_bool !64BIT
diff --git a/arch/um/Kconfig b/arch/um/Kconfig
index ce3d562..6b99389 100644
--- a/arch/um/Kconfig
+++ b/arch/um/Kconfig
@@ -12,7 +12,6 @@ config UML
select HAVE_UID16
select HAVE_FUTEX_CMPXCHG if FUTEX
select HAVE_DEBUG_KMEMLEAK
- select HAVE_MEMBLOCK
select GENERIC_IRQ_SHOW
select GENERIC_CPU_DEVICES
select GENERIC_CLOCKEVENTS
diff --git a/arch/unicore32/Kconfig b/arch/unicore32/Kconfig
index 60eae74..8726acd 100644
--- a/arch/unicore32/Kconfig
+++ b/arch/unicore32/Kconfig
@@ -4,7 +4,6 @@ config UNICORE32
select ARCH_HAS_DEVMEM_IS_ALLOWED
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_MIGHT_HAVE_PC_SERIO
- select HAVE_MEMBLOCK
select HAVE_GENERIC_DMA_COHERENT
select HAVE_KERNEL_GZIP
select HAVE_KERNEL_BZIP2
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 5a861bd..875bef8e 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -167,7 +167,6 @@ config X86
select HAVE_KRETPROBES
select HAVE_KVM
select HAVE_LIVEPATCH if X86_64
- select HAVE_MEMBLOCK
select HAVE_MEMBLOCK_NODE_MAP
select HAVE_MIXED_BREAKPOINTS_REGS
select HAVE_MOD_ARCH_SPECIFIC
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index e4f7d12..2f7c086 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -27,7 +27,6 @@ config XTENSA
select HAVE_FUTEX_CMPXCHG if !MMU
select HAVE_HW_BREAKPOINT if PERF_EVENTS
select HAVE_IRQ_TIME_ACCOUNTING
- select HAVE_MEMBLOCK
select HAVE_OPROFILE
select HAVE_PERF_EVENTS
select HAVE_STACKPROTECTOR
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 76c83c1..bd841bb 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -1115,13 +1115,11 @@ int __init early_init_dt_scan_chosen(unsigned long node, const char *uname,
return 1;
}

-#ifdef CONFIG_HAVE_MEMBLOCK
#ifndef MIN_MEMBLOCK_ADDR
#define MIN_MEMBLOCK_ADDR __pa(PAGE_OFFSET)
#endif
#ifndef MAX_MEMBLOCK_ADDR
#define MAX_MEMBLOCK_ADDR ((phys_addr_t)~0)
-#endif

void __init __weak early_init_dt_add_memory_arch(u64 base, u64 size)
{
diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c
index 895c83e..d6255c2 100644
--- a/drivers/of/of_reserved_mem.c
+++ b/drivers/of/of_reserved_mem.c
@@ -20,13 +20,12 @@
#include <linux/of_reserved_mem.h>
#include <linux/sort.h>
#include <linux/slab.h>
+#include <linux/memblock.h>

#define MAX_RESERVED_REGIONS 32
static struct reserved_mem reserved_mem[MAX_RESERVED_REGIONS];
static int reserved_mem_count;

-#if defined(CONFIG_HAVE_MEMBLOCK)
-#include <linux/memblock.h>
int __init __weak early_init_dt_alloc_reserved_memory_arch(phys_addr_t size,
phys_addr_t align, phys_addr_t start, phys_addr_t end, bool nomap,
phys_addr_t *res_base)
@@ -54,16 +53,6 @@ int __init __weak early_init_dt_alloc_reserved_memory_arch(phys_addr_t size,
return memblock_remove(base, size);
return 0;
}
-#else
-int __init __weak early_init_dt_alloc_reserved_memory_arch(phys_addr_t size,
- phys_addr_t align, phys_addr_t start, phys_addr_t end, bool nomap,
- phys_addr_t *res_base)
-{
- pr_err("Reserved memory not supported, ignoring region 0x%llx%s\n",
- size, nomap ? " (nomap)" : "");
- return -ENOSYS;
-}
-#endif

/**
* res_mem_save_node() - save fdt node for second pass initialization
diff --git a/drivers/staging/android/ion/Kconfig b/drivers/staging/android/ion/Kconfig
index c16dd16..0fdda6f 100644
--- a/drivers/staging/android/ion/Kconfig
+++ b/drivers/staging/android/ion/Kconfig
@@ -1,6 +1,6 @@
menuconfig ION
bool "Ion Memory Manager"
- depends on HAVE_MEMBLOCK && HAS_DMA && MMU
+ depends on HAS_DMA && MMU
select GENERIC_ALLOCATOR
select DMA_SHARED_BUFFER
help
diff --git a/fs/pstore/Kconfig b/fs/pstore/Kconfig
index 503086f..0d19d19 100644
--- a/fs/pstore/Kconfig
+++ b/fs/pstore/Kconfig
@@ -141,7 +141,6 @@ config PSTORE_RAM
tristate "Log panic/oops to a RAM buffer"
depends on PSTORE
depends on HAS_IOMEM
- depends on HAVE_MEMBLOCK
select REED_SOLOMON
select REED_SOLOMON_ENC8
select REED_SOLOMON_DEC8
diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h
index 1f005b5..ee61ac3 100644
--- a/include/linux/bootmem.h
+++ b/include/linux/bootmem.h
@@ -132,9 +132,6 @@ extern void *__alloc_bootmem_low_node(pg_data_t *pgdat,
#define alloc_bootmem_low_pages_node(pgdat, x) \
__alloc_bootmem_low_node(pgdat, x, PAGE_SIZE, 0)

-
-#if defined(CONFIG_HAVE_MEMBLOCK)
-
/* FIXME: use MEMBLOCK_ALLOC_* variants here */
#define BOOTMEM_ALLOC_ACCESSIBLE 0
#define BOOTMEM_ALLOC_ANYWHERE (~(phys_addr_t)0)
@@ -234,115 +231,6 @@ static inline void __init memblock_free_late(
__memblock_free_late(base, size);
}

-#else
-
-#define BOOTMEM_ALLOC_ACCESSIBLE 0
-
-
-/* Fall back to all the existing bootmem APIs */
-static inline void * __init memblock_virt_alloc(
- phys_addr_t size, phys_addr_t align)
-{
- if (!align)
- align = SMP_CACHE_BYTES;
- return __alloc_bootmem(size, align, BOOTMEM_LOW_LIMIT);
-}
-
-static inline void * __init memblock_virt_alloc_raw(
- phys_addr_t size, phys_addr_t align)
-{
- if (!align)
- align = SMP_CACHE_BYTES;
- return __alloc_bootmem_nopanic(size, align, BOOTMEM_LOW_LIMIT);
-}
-
-static inline void * __init memblock_virt_alloc_nopanic(
- phys_addr_t size, phys_addr_t align)
-{
- if (!align)
- align = SMP_CACHE_BYTES;
- return __alloc_bootmem_nopanic(size, align, BOOTMEM_LOW_LIMIT);
-}
-
-static inline void * __init memblock_virt_alloc_low(
- phys_addr_t size, phys_addr_t align)
-{
- if (!align)
- align = SMP_CACHE_BYTES;
- return __alloc_bootmem_low(size, align, 0);
-}
-
-static inline void * __init memblock_virt_alloc_low_nopanic(
- phys_addr_t size, phys_addr_t align)
-{
- if (!align)
- align = SMP_CACHE_BYTES;
- return __alloc_bootmem_low_nopanic(size, align, 0);
-}
-
-static inline void * __init memblock_virt_alloc_from_nopanic(
- phys_addr_t size, phys_addr_t align, phys_addr_t min_addr)
-{
- return __alloc_bootmem_nopanic(size, align, min_addr);
-}
-
-static inline void * __init memblock_virt_alloc_node(
- phys_addr_t size, int nid)
-{
- return __alloc_bootmem_node(NODE_DATA(nid), size, SMP_CACHE_BYTES,
- BOOTMEM_LOW_LIMIT);
-}
-
-static inline void * __init memblock_virt_alloc_node_nopanic(
- phys_addr_t size, int nid)
-{
- return __alloc_bootmem_node_nopanic(NODE_DATA(nid), size,
- SMP_CACHE_BYTES,
- BOOTMEM_LOW_LIMIT);
-}
-
-static inline void * __init memblock_virt_alloc_try_nid(phys_addr_t size,
- phys_addr_t align, phys_addr_t min_addr, phys_addr_t max_addr, int nid)
-{
- return __alloc_bootmem_node_high(NODE_DATA(nid), size, align,
- min_addr);
-}
-
-static inline void * __init memblock_virt_alloc_try_nid_raw(
- phys_addr_t size, phys_addr_t align,
- phys_addr_t min_addr, phys_addr_t max_addr, int nid)
-{
- return ___alloc_bootmem_node_nopanic(NODE_DATA(nid), size, align,
- min_addr, max_addr);
-}
-
-static inline void * __init memblock_virt_alloc_try_nid_nopanic(
- phys_addr_t size, phys_addr_t align,
- phys_addr_t min_addr, phys_addr_t max_addr, int nid)
-{
- return ___alloc_bootmem_node_nopanic(NODE_DATA(nid), size, align,
- min_addr, max_addr);
-}
-
-static inline void __init memblock_free_early(
- phys_addr_t base, phys_addr_t size)
-{
- free_bootmem(base, size);
-}
-
-static inline void __init memblock_free_early_nid(
- phys_addr_t base, phys_addr_t size, int nid)
-{
- free_bootmem_node(NODE_DATA(nid), base, size);
-}
-
-static inline void __init memblock_free_late(
- phys_addr_t base, phys_addr_t size)
-{
- free_bootmem_late(base, size);
-}
-#endif /* defined(CONFIG_HAVE_MEMBLOCK) */
-
extern void *alloc_large_system_hash(const char *tablename,
unsigned long bucketsize,
unsigned long numentries,
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index 58697ad..3c96a16 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -2,7 +2,6 @@
#define _LINUX_MEMBLOCK_H
#ifdef __KERNEL__

-#ifdef CONFIG_HAVE_MEMBLOCK
/*
* Logical memory blocks.
*
@@ -462,7 +461,6 @@ static inline phys_addr_t memblock_alloc(phys_addr_t size, phys_addr_t align)
{
return 0;
}
-#endif /* CONFIG_HAVE_MEMBLOCK */

#endif /* __KERNEL__ */

diff --git a/include/linux/mm.h b/include/linux/mm.h
index bd5e246..6215168 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2143,7 +2143,7 @@ extern int __meminit __early_pfn_to_nid(unsigned long pfn,
struct mminit_pfnnid_cache *state);
#endif

-#if defined(CONFIG_HAVE_MEMBLOCK) && !defined(CONFIG_FLAT_NODE_MEM_MAP)
+#if !defined(CONFIG_FLAT_NODE_MEM_MAP)
void zero_resv_unavail(void);
#else
static inline void zero_resv_unavail(void) {}
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 121d869..321117f 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -1311,7 +1311,7 @@ config DEBUG_KOBJECT
depends on DEBUG_KERNEL
help
If you say Y here, some extra kobject debugging messages will be sent
- to the syslog.
+ to the syslog.

config DEBUG_KOBJECT_RELEASE
bool "kobject release debugging"
@@ -1988,7 +1988,6 @@ endif # RUNTIME_TESTING_MENU

config MEMTEST
bool "Memtest"
- depends on HAVE_MEMBLOCK
---help---
This option adds a kernel parameter 'memtest', which allows memtest
to be set.
diff --git a/mm/Kconfig b/mm/Kconfig
index 16ceea0..c6a0d82 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -127,9 +127,6 @@ config SPARSEMEM_VMEMMAP
pfn_to_page and page_to_pfn operations. This is the most
efficient option when sufficient kernel resources are available.

-config HAVE_MEMBLOCK
- bool
-
config HAVE_MEMBLOCK_NODE_MAP
bool

@@ -481,7 +478,7 @@ config FRONTSWAP

config CMA
bool "Contiguous Memory Allocator"
- depends on HAVE_MEMBLOCK && MMU
+ depends on MMU
select MIGRATION
select MEMORY_ISOLATION
help
diff --git a/mm/Makefile b/mm/Makefile
index c4da6de..0a3e72e 100644
--- a/mm/Makefile
+++ b/mm/Makefile
@@ -43,11 +43,11 @@ obj-y := filemap.o mempool.o oom_kill.o fadvise.o \

obj-y += init-mm.o
obj-y += nobootmem.o
+obj-y += memblock.o

ifdef CONFIG_MMU
obj-$(CONFIG_ADVISE_SYSCALLS) += madvise.o
endif
-obj-$(CONFIG_HAVE_MEMBLOCK) += memblock.o

obj-$(CONFIG_SWAP) += page_io.o swap_state.o swapfile.o swap_slots.o
obj-$(CONFIG_FRONTSWAP) += frontswap.o
diff --git a/mm/nobootmem.c b/mm/nobootmem.c
index 439af3b..d4d0cd4 100644
--- a/mm/nobootmem.c
+++ b/mm/nobootmem.c
@@ -23,10 +23,6 @@

#include "internal.h"

-#ifndef CONFIG_HAVE_MEMBLOCK
-#error CONFIG_HAVE_MEMBLOCK not defined
-#endif
-
#ifndef CONFIG_NEED_MULTIPLE_NODES
struct pglist_data __refdata contig_page_data;
EXPORT_SYMBOL(contig_page_data);
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 61e664d..a4985cd 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6442,7 +6442,7 @@ void __init free_area_init_node(int nid, unsigned long *zones_size,
free_area_init_core(pgdat);
}

-#if defined(CONFIG_HAVE_MEMBLOCK) && !defined(CONFIG_FLAT_NODE_MEM_MAP)
+#if !defined(CONFIG_FLAT_NODE_MEM_MAP)
/*
* Only struct pages that are backed by physical memory are zeroed and
* initialized by going through __init_single_page(). But, there are some
@@ -6483,7 +6483,7 @@ void __init zero_resv_unavail(void)
if (pgcnt)
pr_info("Reserved but unavailable: %lld pages", pgcnt);
}
-#endif /* CONFIG_HAVE_MEMBLOCK && !CONFIG_FLAT_NODE_MEM_MAP */
+#endif /* !CONFIG_FLAT_NODE_MEM_MAP */

#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP

--
2.7.4