1da177e4c3
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!
88 lines
1.9 KiB
C
88 lines
1.9 KiB
C
#ifndef __ASM_SH_PGALLOC_H
|
|
#define __ASM_SH_PGALLOC_H
|
|
|
|
#include <linux/threads.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/mm.h>
|
|
|
|
#define pgd_quicklist ((unsigned long *)0)
|
|
#define pmd_quicklist ((unsigned long *)0)
|
|
#define pte_quicklist ((unsigned long *)0)
|
|
#define pgtable_cache_size 0L
|
|
|
|
#define pmd_populate_kernel(mm, pmd, pte) \
|
|
set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte)))
|
|
|
|
static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
|
|
struct page *pte)
|
|
{
|
|
set_pmd(pmd, __pmd(_PAGE_TABLE + page_to_phys(pte)));
|
|
}
|
|
|
|
/*
|
|
* Allocate and free page tables.
|
|
*/
|
|
static inline pgd_t *pgd_alloc(struct mm_struct *mm)
|
|
{
|
|
unsigned int pgd_size = (USER_PTRS_PER_PGD * sizeof(pgd_t));
|
|
pgd_t *pgd = (pgd_t *)kmalloc(pgd_size, GFP_KERNEL);
|
|
|
|
if (pgd)
|
|
memset(pgd, 0, pgd_size);
|
|
|
|
return pgd;
|
|
}
|
|
|
|
static inline void pgd_free(pgd_t *pgd)
|
|
{
|
|
kfree(pgd);
|
|
}
|
|
|
|
static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
|
|
unsigned long address)
|
|
{
|
|
pte_t *pte;
|
|
|
|
pte = (pte_t *) __get_free_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO);
|
|
|
|
return pte;
|
|
}
|
|
|
|
static inline struct page *pte_alloc_one(struct mm_struct *mm,
|
|
unsigned long address)
|
|
{
|
|
struct page *pte;
|
|
|
|
pte = alloc_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, 0);
|
|
|
|
return pte;
|
|
}
|
|
|
|
static inline void pte_free_kernel(pte_t *pte)
|
|
{
|
|
free_page((unsigned long)pte);
|
|
}
|
|
|
|
static inline void pte_free(struct page *pte)
|
|
{
|
|
__free_page(pte);
|
|
}
|
|
|
|
#define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))
|
|
|
|
/*
|
|
* allocating and freeing a pmd is trivial: the 1-entry pmd is
|
|
* inside the pgd, so has no extra memory associated with it.
|
|
*/
|
|
|
|
#define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); })
|
|
#define pmd_free(x) do { } while (0)
|
|
#define __pmd_free_tlb(tlb,x) do { } while (0)
|
|
#define pgd_populate(mm, pmd, pte) BUG()
|
|
#define check_pgt_cache() do { } while (0)
|
|
|
|
#ifdef CONFIG_CPU_SH4
|
|
#define PG_mapped PG_arch_1
|
|
#endif
|
|
|
|
#endif /* __ASM_SH_PGALLOC_H */
|