From: zijun_hu <zijun_hu@xxxxxxx>
this patch fixes the following bugs:
- no bootmem is implemented by memblock currently, but config option
CONFIG_NO_BOOTMEM doesn't depend on CONFIG_HAVE_MEMBLOCK
- the same ARCH_LOW_ADDRESS_LIMIT statements are duplicated between
header and relevant source
- don't ensure ARCH_LOW_ADDRESS_LIMIT perhaps defined by ARCH in
asm/processor.h is preferred over default in linux/bootmem.h
completely since the former header isn't included by the latter
Signed-off-by: zijun_hu <zijun_hu@xxxxxxx>
---
include/linux/bootmem.h | 13 +++++++------
mm/Kconfig | 6 ++++--
mm/nobootmem.c | 6 +-----
3 files changed, 12 insertions(+), 13 deletions(-)
diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h
index f9be32691718..95968236abc7 100644
--- a/include/linux/bootmem.h
+++ b/include/linux/bootmem.h
@@ -7,6 +7,7 @@
#include <linux/mmzone.h>
#include <linux/mm_types.h>
#include <asm/dma.h>
+#include <asm/processor.h>
/*
* simple boot-time physical memory area allocator.
@@ -119,6 +120,10 @@ extern void *__alloc_bootmem_low_node(pg_data_t *pgdat,
#define BOOTMEM_LOW_LIMIT __pa(MAX_DMA_ADDRESS)
#endif
+#ifndef ARCH_LOW_ADDRESS_LIMIT
+#define ARCH_LOW_ADDRESS_LIMIT 0xffffffffUL
+#endif
+
#define alloc_bootmem(x) \
__alloc_bootmem(x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT)
#define alloc_bootmem_align(x, align) \
@@ -148,7 +153,7 @@ extern void *__alloc_bootmem_low_node(pg_data_t *pgdat,
__alloc_bootmem_low_node(pgdat, x, PAGE_SIZE, 0)
-#if defined(CONFIG_HAVE_MEMBLOCK) && defined(CONFIG_NO_BOOTMEM)
+#if defined(CONFIG_NO_BOOTMEM)
/* FIXME: use MEMBLOCK_ALLOC_* variants here */
#define BOOTMEM_ALLOC_ACCESSIBLE 0
@@ -180,10 +185,6 @@ static inline void * __init memblock_virt_alloc_nopanic(
NUMA_NO_NODE);
}
-#ifndef ARCH_LOW_ADDRESS_LIMIT
-#define ARCH_LOW_ADDRESS_LIMIT 0xffffffffUL
-#endif
-
static inline void * __init memblock_virt_alloc_low(
phys_addr_t size, phys_addr_t align)
{
@@ -333,7 +334,7 @@ static inline void __init memblock_free_late(
{
free_bootmem_late(base, size);
}
-#endif /* defined(CONFIG_HAVE_MEMBLOCK) && defined(CONFIG_NO_BOOTMEM) */
+#endif /* defined(CONFIG_NO_BOOTMEM) */
#ifdef CONFIG_HAVE_ARCH_ALLOC_REMAP
extern void *alloc_remap(int nid, unsigned long size);
diff --git a/mm/Kconfig b/mm/Kconfig
index be0ee11fa0d9..b7f19ff4b743 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -144,14 +144,16 @@ config ARCH_DISCARD_MEMBLOCK
bool
config NO_BOOTMEM
- bool
+ bool "No legacy boot memory"
+ depends on HAVE_MEMBLOCK
+ help
+ NO_BOOTMEM is implemented by memblock
config MEMORY_ISOLATION
bool
config MOVABLE_NODE
bool "Enable to assign a node which has only movable memory"
- depends on HAVE_MEMBLOCK
depends on NO_BOOTMEM
depends on X86_64
depends on NUMA
diff --git a/mm/nobootmem.c b/mm/nobootmem.c
index bd05a70f44b9..1802c9bbe11a 100644
--- a/mm/nobootmem.c
+++ b/mm/nobootmem.c
@@ -11,15 +11,14 @@
#include <linux/init.h>
#include <linux/pfn.h>
#include <linux/slab.h>
-#include <linux/bootmem.h>
#include <linux/export.h>
#include <linux/kmemleak.h>
#include <linux/range.h>
#include <linux/memblock.h>
+#include <linux/bootmem.h>
#include <asm/bug.h>
#include <asm/io.h>
-#include <asm/processor.h>
#include "internal.h"
@@ -395,9 +394,6 @@ void * __init __alloc_bootmem_node_high(pg_data_t *pgdat, unsigned long size,
return __alloc_bootmem_node(pgdat, size, align, goal);
}
-#ifndef ARCH_LOW_ADDRESS_LIMIT
-#define ARCH_LOW_ADDRESS_LIMIT 0xffffffffUL
-#endif
/**
* __alloc_bootmem_low - allocate low boot memory
--
1.9.1
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