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[MIPS] Fix sparsemem support.

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Move memory_present() in arch/mips/kernel/setup.c. When using sparsemem
extreme, this function does an allocate for bootmem. This would always
fail since init_bootmem hasn't been called yet.
    
Move memory_present after free_bootmem. This only marks actual memory
ranges as present instead of the entire address space.
    
Signed-off-by: Chad Reese  <creese@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Chad Reese 2006-05-30 17:16:49 -07:00 committed by Ralf Baechle
parent ecf52d3c89
commit b1c231f5a5
4 changed files with 18 additions and 3 deletions
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3
arch/mips/kernel/setup.c
View File

@ -355,8 +355,6 @@ static inline void bootmem_init(void)
}
#endif
memory_present(0, first_usable_pfn, max_low_pfn);
/* Initialize the boot-time allocator with low memory only. */
bootmap_size = init_bootmem(first_usable_pfn, max_low_pfn);
@ -410,6 +408,7 @@ static inline void bootmem_init(void)
/* Register lowmem ranges */
free_bootmem(PFN_PHYS(curr_pfn), PFN_PHYS(size));
memory_present(0, curr_pfn, curr_pfn + size - 1);
}
/* Reserve the bootmap memory. */

2
arch/mips/mm/init.c
View File

@ -227,7 +227,7 @@ void __init mem_init(void)
for (tmp = 0; tmp < max_low_pfn; tmp++)
if (page_is_ram(tmp)) {
ram++;
if (PageReserved(mem_map+tmp))
if (PageReserved(pfn_to_page(tmp)))
reservedpages++;
}

2
include/asm-mips/page.h
View File

@ -139,9 +139,11 @@ typedef struct { unsigned long pgprot; } pgprot_t;
#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
#ifndef CONFIG_SPARSEMEM
#ifndef CONFIG_NEED_MULTIPLE_NODES
#define pfn_valid(pfn) ((pfn) < max_mapnr)
#endif
#endif
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)

14
include/asm-mips/sparsemem.h Normal file
View File

@ -0,0 +1,14 @@
#ifndef _MIPS_SPARSEMEM_H
#define _MIPS_SPARSEMEM_H
#ifdef CONFIG_SPARSEMEM
/*
* SECTION_SIZE_BITS 2^N: how big each section will be
* MAX_PHYSMEM_BITS 2^N: how much memory we can have in that space
*/
#define SECTION_SIZE_BITS 28
#define MAX_PHYSMEM_BITS 35
#endif /* CONFIG_SPARSEMEM */
#endif /* _MIPS_SPARSEMEM_H */