diff options
Diffstat (limited to 'arch/xtensa/mm/pgtable.c')
| -rw-r--r-- | arch/xtensa/mm/pgtable.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/arch/xtensa/mm/pgtable.c b/arch/xtensa/mm/pgtable.c new file mode 100644 index 0000000000000..e5e119c820e47 --- /dev/null +++ b/arch/xtensa/mm/pgtable.c @@ -0,0 +1,76 @@ +/* + * arch/xtensa/mm/fault.c + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2001 - 2005 Tensilica Inc. + * + * Chris Zankel <chris@zankel.net> + */ + +#if (DCACHE_SIZE > PAGE_SIZE) + +pte_t* pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address) +{ + pte_t *pte, p; + int color = ADDR_COLOR(address); + int i; + + p = (pte_t*) __get_free_pages(GFP_KERNEL|__GFP_REPEAT, COLOR_ORDER); + + if (likely(p)) { + struct page *page; + + for (i = 0; i < COLOR_SIZE; i++, p++) { + page = virt_to_page(pte); + + set_page_count(page, 1); + ClearPageCompound(page); + + if (ADDR_COLOR(p) == color) + pte = p; + else + free_page(p); + } + clear_page(pte); + } + return pte; +} + +#ifdef PROFILING + +int mask; +int hit; +int flush; + +#endif + +struct page* pte_alloc_one(struct mm_struct *mm, unsigned long address) +{ + struct page *page, p; + int color = ADDR_COLOR(address); + + p = alloc_pages(GFP_KERNEL | __GFP_REPEAT, PTE_ORDER); + + if (likely(p)) { + for (i = 0; i < PAGE_ORDER; i++) { + set_page_count(p, 1); + ClearPageCompound(p); + + if (PADDR_COLOR(page_address(pg)) == color) + page = p; + else + free_page(p); + } + clear_highpage(page); + } + + return page; +} + +#endif + + + |