From: Mike Rapoport <r...@linux.ibm.com>
The pg_data_map and pg_data_table arrays as well as page_to_pfn() and
pfn_to_page() are required only for DISCONTIGMEM. Other memory models can
use the generic definitions in asm-generic/memory_model.h.
Signed-off-by: Mike Rapoport <r...@linux.ibm.com>
---
arch/m68k/Kconfig.cpu | 1 -
arch/m68k/include/asm/page.h | 2 ++
arch/m68k/include/asm/page_mm.h | 5 +++++
arch/m68k/include/asm/virtconvert.h | 5 -----
arch/m68k/mm/init.c | 6 +++---
5 files changed, 10 insertions(+), 9 deletions(-)
diff --git a/arch/m68k/Kconfig.cpu b/arch/m68k/Kconfig.cpu
index e8ad721e52f6..b8884af365ae 100644
--- a/arch/m68k/Kconfig.cpu
+++ b/arch/m68k/Kconfig.cpu
@@ -374,7 +374,6 @@ config SINGLE_MEMORY_CHUNK
bool "Use one physical chunk of memory only" if ADVANCED && !SUN3
depends on MMU
default y if SUN3 || MMU_COLDFIRE
- select NEED_MULTIPLE_NODES
help
Ignore all but the first contiguous chunk of physical memory for VM
purposes. This will save a few bytes kernel size and may speed up
diff --git a/arch/m68k/include/asm/page.h b/arch/m68k/include/asm/page.h
index 2614a1206f2f..6116d7094292 100644
--- a/arch/m68k/include/asm/page.h
+++ b/arch/m68k/include/asm/page.h
@@ -62,8 +62,10 @@ extern unsigned long _ramend;
#include <asm/page_no.h>
#endif
+#ifdef CONFIG_DISCONTIGMEM
#define __phys_to_pfn(paddr) ((unsigned long)((paddr) >> PAGE_SHIFT))
#define __pfn_to_phys(pfn) PFN_PHYS(pfn)
+#endif
#include <asm-generic/getorder.h>
diff --git a/arch/m68k/include/asm/page_mm.h b/arch/m68k/include/asm/page_mm.h
index 0e794051d3bb..7f5912af2a52 100644
--- a/arch/m68k/include/asm/page_mm.h
+++ b/arch/m68k/include/asm/page_mm.h
@@ -153,6 +153,7 @@ static inline __attribute_const__ int
__virt_to_node_shift(void)
pfn_to_virt(page_to_pfn(page)); \
})
+#ifdef CONFIG_DISCONTIGMEM
#define pfn_to_page(pfn) ({ \
unsigned long __pfn = (pfn); \
struct pglist_data *pgdat; \
@@ -165,6 +166,10 @@ static inline __attribute_const__ int
__virt_to_node_shift(void)
pgdat = &pg_data_map[page_to_nid(__p)]; \
((__p) - pgdat->node_mem_map) + pgdat->node_start_pfn; \
})
+#else
+#define ARCH_PFN_OFFSET (m68k_memory[0].addr)
+#include <asm-generic/memory_model.h>
+#endif
#define virt_addr_valid(kaddr) ((void *)(kaddr) >= (void *)PAGE_OFFSET &&
(void *)(kaddr) < high_memory)
#define pfn_valid(pfn) virt_addr_valid(pfn_to_virt(pfn))
diff --git a/arch/m68k/include/asm/virtconvert.h
b/arch/m68k/include/asm/virtconvert.h
index eb9eb5cb23a6..ca91b32dc6ef 100644
--- a/arch/m68k/include/asm/virtconvert.h
+++ b/arch/m68k/include/asm/virtconvert.h
@@ -29,12 +29,7 @@ static inline void *phys_to_virt(unsigned long address)
}
/* Permanent address of a page. */
-#if defined(CONFIG_MMU) && !defined(CONFIG_DISCONTIGMEM)
-#define page_to_phys(page) \
- __pa(PAGE_OFFSET + (((page) - pg_data_map[0].node_mem_map) <<
PAGE_SHIFT))
-#else
#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
-#endif
/*
* IO bus memory addresses are 1:1 with the physical address,
diff --git a/arch/m68k/mm/init.c b/arch/m68k/mm/init.c
index 4b46ceace3d3..14c1e541451c 100644
--- a/arch/m68k/mm/init.c
+++ b/arch/m68k/mm/init.c
@@ -42,12 +42,12 @@ EXPORT_SYMBOL(empty_zero_page);
#ifdef CONFIG_MMU
-pg_data_t pg_data_map[MAX_NUMNODES];
-EXPORT_SYMBOL(pg_data_map);
-
int m68k_virt_to_node_shift;
#ifdef CONFIG_DISCONTIGMEM
+pg_data_t pg_data_map[MAX_NUMNODES];
+EXPORT_SYMBOL(pg_data_map);
+
pg_data_t *pg_data_table[65];
EXPORT_SYMBOL(pg_data_table);
#endif
--
2.28.0
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