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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-alpha/pgalloc.h
downloadblackbird-op-linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
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Linux-2.6.12-rc2v2.6.12-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-alpha/pgalloc.h')
-rw-r--r--include/asm-alpha/pgalloc.h78
1 files changed, 78 insertions, 0 deletions
diff --git a/include/asm-alpha/pgalloc.h b/include/asm-alpha/pgalloc.h
new file mode 100644
index 000000000000..308475642913
--- /dev/null
+++ b/include/asm-alpha/pgalloc.h
@@ -0,0 +1,78 @@
+#ifndef _ALPHA_PGALLOC_H
+#define _ALPHA_PGALLOC_H
+
+#include <linux/config.h>
+#include <linux/mm.h>
+#include <linux/mmzone.h>
+
+/*
+ * Allocate and free page tables. The xxx_kernel() versions are
+ * used to allocate a kernel page table - this turns on ASN bits
+ * if any.
+ */
+
+static inline void
+pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *pte)
+{
+ pmd_set(pmd, (pte_t *)(page_to_pa(pte) + PAGE_OFFSET));
+}
+
+static inline void
+pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
+{
+ pmd_set(pmd, pte);
+}
+
+static inline void
+pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd)
+{
+ pgd_set(pgd, pmd);
+}
+
+extern pgd_t *pgd_alloc(struct mm_struct *mm);
+
+static inline void
+pgd_free(pgd_t *pgd)
+{
+ free_page((unsigned long)pgd);
+}
+
+static inline pmd_t *
+pmd_alloc_one(struct mm_struct *mm, unsigned long address)
+{
+ pmd_t *ret = (pmd_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO);
+ return ret;
+}
+
+static inline void
+pmd_free(pmd_t *pmd)
+{
+ free_page((unsigned long)pmd);
+}
+
+extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr);
+
+static inline void
+pte_free_kernel(pte_t *pte)
+{
+ free_page((unsigned long)pte);
+}
+
+static inline struct page *
+pte_alloc_one(struct mm_struct *mm, unsigned long addr)
+{
+ pte_t *pte = pte_alloc_one_kernel(mm, addr);
+ if (pte)
+ return virt_to_page(pte);
+ return NULL;
+}
+
+static inline void
+pte_free(struct page *page)
+{
+ __free_page(page);
+}
+
+#define check_pgt_cache() do { } while (0)
+
+#endif /* _ALPHA_PGALLOC_H */
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