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vmemmap: generify initialisation via helpers

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Convert the common vmemmap population into initialisation helpers for use by
architecture vmemmap populators.  All architecture implementing the
SPARSEMEM_VMEMMAP variant supply an architecture specific vmemmap_populate()
initialiser, which may make use of the helpers.

This allows us to clean up and remove the initialisation Kconfig entries.
With this patch there is a single SPARSEMEM_VMEMMAP_ENABLE Kconfig option to
indicate use of that variant.

Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Acked-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andy Whitcroft
2007-10-16 01:24:14 -07:00
committed by Linus Torvalds
parent 8f6aac419b
commit 29c71111d0
3 changed files with 94 additions and 109 deletions
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9
include/linux/mm.h
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@@ -1219,10 +1219,15 @@ extern int randomize_va_space;
const char * arch_vma_name(struct vm_area_struct *vma);
struct page *sparse_early_mem_map_populate(unsigned long pnum, int nid);
int vmemmap_populate(struct page *start_page, unsigned long pages, int node);
int vmemmap_populate_pmd(pud_t *, unsigned long, unsigned long, int);
pgd_t *vmemmap_pgd_populate(unsigned long addr, int node);
pud_t *vmemmap_pud_populate(pgd_t *pgd, unsigned long addr, int node);
pmd_t *vmemmap_pmd_populate(pud_t *pud, unsigned long addr, int node);
pte_t *vmemmap_pte_populate(pmd_t *pmd, unsigned long addr, int node);
void *vmemmap_alloc_block(unsigned long size, int node);
void vmemmap_verify(pte_t *, int, unsigned long, unsigned long);
int vmemmap_populate_basepages(struct page *start_page,
unsigned long pages, int node);
int vmemmap_populate(struct page *start_page, unsigned long pages, int node);
#endif /* __KERNEL__ */
#endif /* _LINUX_MM_H */