| #ifndef _PPC64_PGALLOC_H |
| #define _PPC64_PGALLOC_H |
| |
| #include <linux/threads.h> |
| #include <asm/processor.h> |
| |
| /* |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| */ |
| |
| static inline pgd_t * |
| pgd_alloc(struct mm_struct *mm) |
| { |
| pgd_t *pgd = (pgd_t *)__get_free_page(GFP_KERNEL); |
| if (pgd != NULL) |
| clear_page(pgd); |
| return pgd; |
| } |
| |
| static inline void |
| pgd_free(pgd_t *pgd) |
| { |
| free_page((unsigned long)pgd); |
| } |
| |
| #define pgd_populate(MM, PGD, PMD) pgd_set(PGD, PMD) |
| |
| static inline pmd_t * |
| pmd_alloc_one(struct mm_struct *mm, unsigned long addr) |
| { |
| int count = 0; |
| pmd_t *pmd; |
| |
| do { |
| pmd = (pmd_t *)__get_free_page(GFP_KERNEL); |
| if (pmd) |
| clear_page(pmd); |
| else { |
| current->state = TASK_UNINTERRUPTIBLE; |
| schedule_timeout(HZ); |
| } |
| } while (!pmd && (count++ < 10)); |
| |
| return pmd; |
| } |
| |
| static inline void |
| pmd_free(pmd_t *pmd) |
| { |
| free_page((unsigned long)pmd); |
| } |
| |
| #define pmd_populate_kernel(mm, pmd, pte) pmd_set(pmd, pte) |
| #define pmd_populate(mm, pmd, pte_page) \ |
| pmd_populate_kernel(mm, pmd, page_address(pte_page)) |
| |
| static inline pte_t * |
| pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr) |
| { |
| int count = 0; |
| pte_t *pte; |
| |
| do { |
| pte = (pte_t *)__get_free_page(GFP_KERNEL); |
| if (pte) |
| clear_page(pte); |
| else { |
| current->state = TASK_UNINTERRUPTIBLE; |
| schedule_timeout(HZ); |
| } |
| } while (!pte && (count++ < 10)); |
| |
| return pte; |
| } |
| |
| #define pte_alloc_one(mm, address) \ |
| virt_to_page(pte_alloc_one_kernel((mm), (address))) |
| |
| static inline void |
| pte_free_kernel(pte_t *pte) |
| { |
| free_page((unsigned long)pte); |
| } |
| |
| #define pte_free(pte_page) pte_free_kernel(page_address(pte_page)) |
| |
| #define check_pgt_cache() do { } while (0) |
| |
| #endif /* _PPC64_PGALLOC_H */ |