1f15cbe6fSPaul Mundt #ifndef __ASM_SH_PGALLOC_H 2f15cbe6fSPaul Mundt #define __ASM_SH_PGALLOC_H 3f15cbe6fSPaul Mundt 4f15cbe6fSPaul Mundt #include <linux/quicklist.h> 5f15cbe6fSPaul Mundt #include <asm/page.h> 6f15cbe6fSPaul Mundt 7f15cbe6fSPaul Mundt #define QUICK_PT 1 /* Other page table pages that are zero on free */ 8f15cbe6fSPaul Mundt 9*2a5eaccaSMatt Fleming extern pgd_t *pgd_alloc(struct mm_struct *); 10*2a5eaccaSMatt Fleming extern void pgd_free(struct mm_struct *mm, pgd_t *pgd); 11*2a5eaccaSMatt Fleming 125d9b4b19SMatt Fleming #ifdef CONFIG_PGTABLE_LEVELS_3 13*2a5eaccaSMatt Fleming extern void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd); 14*2a5eaccaSMatt Fleming extern pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address); 15*2a5eaccaSMatt Fleming extern void pmd_free(struct mm_struct *mm, pmd_t *pmd); 165d9b4b19SMatt Fleming #endif 17b73c8063SMatt Fleming 18f15cbe6fSPaul Mundt static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, 19f15cbe6fSPaul Mundt pte_t *pte) 20f15cbe6fSPaul Mundt { 21f15cbe6fSPaul Mundt set_pmd(pmd, __pmd((unsigned long)pte)); 22f15cbe6fSPaul Mundt } 23f15cbe6fSPaul Mundt 24f15cbe6fSPaul Mundt static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, 25f15cbe6fSPaul Mundt pgtable_t pte) 26f15cbe6fSPaul Mundt { 27f15cbe6fSPaul Mundt set_pmd(pmd, __pmd((unsigned long)page_address(pte))); 28f15cbe6fSPaul Mundt } 29f15cbe6fSPaul Mundt #define pmd_pgtable(pmd) pmd_page(pmd) 30f15cbe6fSPaul Mundt 31f15cbe6fSPaul Mundt /* 32f15cbe6fSPaul Mundt * Allocate and free page tables. 33f15cbe6fSPaul Mundt */ 34f15cbe6fSPaul Mundt static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, 35f15cbe6fSPaul Mundt unsigned long address) 36f15cbe6fSPaul Mundt { 37f15cbe6fSPaul Mundt return quicklist_alloc(QUICK_PT, GFP_KERNEL | __GFP_REPEAT, NULL); 38f15cbe6fSPaul Mundt } 39f15cbe6fSPaul Mundt 40f15cbe6fSPaul Mundt static inline pgtable_t pte_alloc_one(struct mm_struct *mm, 41f15cbe6fSPaul Mundt unsigned long address) 42f15cbe6fSPaul Mundt { 43f15cbe6fSPaul Mundt struct page *page; 44f15cbe6fSPaul Mundt void *pg; 45f15cbe6fSPaul Mundt 46f15cbe6fSPaul Mundt pg = quicklist_alloc(QUICK_PT, GFP_KERNEL | __GFP_REPEAT, NULL); 47f15cbe6fSPaul Mundt if (!pg) 48f15cbe6fSPaul Mundt return NULL; 49f15cbe6fSPaul Mundt page = virt_to_page(pg); 50f15cbe6fSPaul Mundt pgtable_page_ctor(page); 51f15cbe6fSPaul Mundt return page; 52f15cbe6fSPaul Mundt } 53f15cbe6fSPaul Mundt 54f15cbe6fSPaul Mundt static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) 55f15cbe6fSPaul Mundt { 56f15cbe6fSPaul Mundt quicklist_free(QUICK_PT, NULL, pte); 57f15cbe6fSPaul Mundt } 58f15cbe6fSPaul Mundt 59f15cbe6fSPaul Mundt static inline void pte_free(struct mm_struct *mm, pgtable_t pte) 60f15cbe6fSPaul Mundt { 61f15cbe6fSPaul Mundt pgtable_page_dtor(pte); 62f15cbe6fSPaul Mundt quicklist_free_page(QUICK_PT, NULL, pte); 63f15cbe6fSPaul Mundt } 64f15cbe6fSPaul Mundt 659e1b32caSBenjamin Herrenschmidt #define __pte_free_tlb(tlb,pte,addr) \ 66f15cbe6fSPaul Mundt do { \ 67f15cbe6fSPaul Mundt pgtable_page_dtor(pte); \ 68f15cbe6fSPaul Mundt tlb_remove_page((tlb), (pte)); \ 69f15cbe6fSPaul Mundt } while (0) 70f15cbe6fSPaul Mundt 71f15cbe6fSPaul Mundt static inline void check_pgt_cache(void) 72f15cbe6fSPaul Mundt { 73f15cbe6fSPaul Mundt quicklist_trim(QUICK_PT, NULL, 25, 16); 74f15cbe6fSPaul Mundt } 75f15cbe6fSPaul Mundt 76f15cbe6fSPaul Mundt #endif /* __ASM_SH_PGALLOC_H */ 77