kernel-ark/include/asm-alpha/pgalloc.h
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

79 lines
1.5 KiB
C

#ifndef _ALPHA_PGALLOC_H
#define _ALPHA_PGALLOC_H
#include <linux/config.h>
#include <linux/mm.h>
#include <linux/mmzone.h>
/*
* Allocate and free page tables. The xxx_kernel() versions are
* used to allocate a kernel page table - this turns on ASN bits
* if any.
*/
static inline void
pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *pte)
{
pmd_set(pmd, (pte_t *)(page_to_pa(pte) + PAGE_OFFSET));
}
static inline void
pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
{
pmd_set(pmd, pte);
}
static inline void
pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd)
{
pgd_set(pgd, pmd);
}
extern pgd_t *pgd_alloc(struct mm_struct *mm);
static inline void
pgd_free(pgd_t *pgd)
{
free_page((unsigned long)pgd);
}
static inline pmd_t *
pmd_alloc_one(struct mm_struct *mm, unsigned long address)
{
pmd_t *ret = (pmd_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO);
return ret;
}
static inline void
pmd_free(pmd_t *pmd)
{
free_page((unsigned long)pmd);
}
extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr);
static inline void
pte_free_kernel(pte_t *pte)
{
free_page((unsigned long)pte);
}
static inline struct page *
pte_alloc_one(struct mm_struct *mm, unsigned long addr)
{
pte_t *pte = pte_alloc_one_kernel(mm, addr);
if (pte)
return virt_to_page(pte);
return NULL;
}
static inline void
pte_free(struct page *page)
{
__free_page(page);
}
#define check_pgt_cache() do { } while (0)
#endif /* _ALPHA_PGALLOC_H */