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-rw-r--r--arch/xtensa/mm/pgtable.c76
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 0000000..e5e119c
--- /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
+
+
+