diff options
author | Mike Rapoport <rppt@linux.ibm.com> | 2020-12-15 06:10:11 +0300 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-15 23:13:43 +0300 |
commit | 4bfc848e0981fcd35db00fe1c6581560689f6dc7 (patch) | |
tree | bcc52206da0217950bbcdb2398d451aa643ece7b /arch | |
parent | 6b2ad8d763727b887d85c990747271ee804d9abb (diff) | |
download | linux-4bfc848e0981fcd35db00fe1c6581560689f6dc7.tar.xz |
m68k/mm: enable use of generic memory_model.h for !DISCONTIGMEM
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.
Link: https://lkml.kernel.org/r/20201101170454.9567-13-rppt@kernel.org
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Meelis Roos <mroos@linux.ee>
Cc: Michael Schmitz <schmitzmic@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/m68k/Kconfig.cpu | 1 | ||||
-rw-r--r-- | arch/m68k/include/asm/page.h | 2 | ||||
-rw-r--r-- | arch/m68k/include/asm/page_mm.h | 5 | ||||
-rw-r--r-- | arch/m68k/include/asm/virtconvert.h | 5 | ||||
-rw-r--r-- | 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 |