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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-cris/pgalloc.h
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Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/asm-cris/pgalloc.h')
-rw-r--r--include/asm-cris/pgalloc.h62
1 files changed, 62 insertions, 0 deletions
diff --git a/include/asm-cris/pgalloc.h b/include/asm-cris/pgalloc.h
new file mode 100644
index 0000000..b202e62
--- /dev/null
+++ b/include/asm-cris/pgalloc.h
@@ -0,0 +1,62 @@
+#ifndef _CRIS_PGALLOC_H
+#define _CRIS_PGALLOC_H
+
+#include <linux/threads.h>
+#include <linux/mm.h>
+
+#define pmd_populate_kernel(mm, pmd, pte) pmd_set(pmd, pte)
+#define pmd_populate(mm, pmd, pte) pmd_set(pmd, page_address(pte))
+
+/*
+ * Allocate and free page tables.
+ */
+
+extern inline pgd_t *pgd_alloc (struct mm_struct *mm)
+{
+ return (pgd_t *)get_zeroed_page(GFP_KERNEL);
+}
+
+extern inline void pgd_free (pgd_t *pgd)
+{
+ free_page((unsigned long)pgd);
+}
+
+extern inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
+{
+ pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO);
+ return pte;
+}
+
+extern inline struct page *pte_alloc_one(struct mm_struct *mm, unsigned long address)
+{
+ struct page *pte;
+ pte = alloc_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, 0);
+ return pte;
+}
+
+extern inline void pte_free_kernel(pte_t *pte)
+{
+ free_page((unsigned long)pte);
+}
+
+extern inline void pte_free(struct page *pte)
+{
+ __free_page(pte);
+}
+
+
+#define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))
+
+/*
+ * We don't have any real pmd's, and this code never triggers because
+ * the pgd will always be present..
+ */
+
+#define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); })
+#define pmd_free(x) do { } while (0)
+#define __pmd_free_tlb(tlb,x) do { } while (0)
+#define pgd_populate(mm, pmd, pte) BUG()
+
+#define check_pgt_cache() do { } while (0)
+
+#endif