#ifndef __ASM_SH_PGALLOC_H
#define __ASM_SH_PGALLOC_H
-#define pmd_populate_kernel(mm, pmd, pte) \
- set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte)))
+#include <linux/quicklist.h>
+#include <asm/page.h>
+
+#define QUICK_PGD 0 /* We preserve special mappings over free */
+#define QUICK_PT 1 /* Other page table pages that are zero on free */
+
+static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
+ pte_t *pte)
+{
+ set_pmd(pmd, __pmd((unsigned long)pte));
+}
static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
- struct page *pte)
+ pgtable_t pte)
+{
+ set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
+}
+#define pmd_pgtable(pmd) pmd_page(pmd)
+
+static inline void pgd_ctor(void *x)
{
- set_pmd(pmd, __pmd(_PAGE_TABLE + page_to_phys(pte)));
+ pgd_t *pgd = x;
+
+ memcpy(pgd + USER_PTRS_PER_PGD,
+ swapper_pg_dir + USER_PTRS_PER_PGD,
+ (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
}
/*
*/
static inline pgd_t *pgd_alloc(struct mm_struct *mm)
{
- return (pgd_t *)__get_free_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO);
+ return quicklist_alloc(QUICK_PGD, GFP_KERNEL | __GFP_REPEAT, pgd_ctor);
}
-static inline void pgd_free(pgd_t *pgd)
+static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
- free_page((unsigned long)pgd);
+ quicklist_free(QUICK_PGD, NULL, pgd);
}
static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
unsigned long address)
{
- return (pte_t *)__get_free_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO);
+ return quicklist_alloc(QUICK_PT, GFP_KERNEL | __GFP_REPEAT, NULL);
}
-static inline struct page *pte_alloc_one(struct mm_struct *mm,
- unsigned long address)
+static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
+ unsigned long address)
{
- return alloc_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO);
+ struct page *page;
+ void *pg;
+
+ pg = quicklist_alloc(QUICK_PT, GFP_KERNEL | __GFP_REPEAT, NULL);
+ if (!pg)
+ return NULL;
+ page = virt_to_page(pg);
+ pgtable_page_ctor(page);
+ return page;
}
-static inline void pte_free_kernel(pte_t *pte)
+static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
{
- free_page((unsigned long)pte);
+ quicklist_free(QUICK_PT, NULL, pte);
}
-static inline void pte_free(struct page *pte)
+static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
{
- __free_page(pte);
+ pgtable_page_dtor(pte);
+ quicklist_free_page(QUICK_PT, NULL, pte);
}
-#define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))
+#define __pte_free_tlb(tlb,pte) \
+do { \
+ pgtable_page_dtor(pte); \
+ tlb_remove_page((tlb), (pte)); \
+} while (0)
/*
* 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_free(x) do { } while (0)
+#define pmd_free(mm, x) do { } while (0)
#define __pmd_free_tlb(tlb,x) do { } while (0)
-#define check_pgt_cache() do { } while (0)
+
+static inline void check_pgt_cache(void)
+{
+ quicklist_trim(QUICK_PGD, NULL, 25, 16);
+ quicklist_trim(QUICK_PT, NULL, 25, 16);
+}
#endif /* __ASM_SH_PGALLOC_H */