From 849369d6c66d3054688672f97d31fceb8e8230fb Mon Sep 17 00:00:00 2001
From: root <root@artemis.panaceas.org>
Date: Fri, 25 Dec 2015 04:40:36 +0000
Subject: initial_commit

---
 arch/alpha/include/asm/pgalloc.h | 88 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 88 insertions(+)
 create mode 100644 arch/alpha/include/asm/pgalloc.h

(limited to 'arch/alpha/include/asm/pgalloc.h')

diff --git a/arch/alpha/include/asm/pgalloc.h b/arch/alpha/include/asm/pgalloc.h
new file mode 100644
index 00000000..bc2a0daf
--- /dev/null
+++ b/arch/alpha/include/asm/pgalloc.h
@@ -0,0 +1,88 @@
+#ifndef _ALPHA_PGALLOC_H
+#define _ALPHA_PGALLOC_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, pgtable_t pte)
+{
+	pmd_set(pmd, (pte_t *)(page_to_pa(pte) + PAGE_OFFSET));
+}
+#define pmd_pgtable(pmd) pmd_page(pmd)
+
+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(struct mm_struct *mm, 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(struct mm_struct *mm, pmd_t *pmd)
+{
+	free_page((unsigned long)pmd);
+}
+
+static 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;
+}
+
+static inline void
+pte_free_kernel(struct mm_struct *mm, pte_t *pte)
+{
+	free_page((unsigned long)pte);
+}
+
+static inline pgtable_t
+pte_alloc_one(struct mm_struct *mm, unsigned long address)
+{
+	pte_t *pte = pte_alloc_one_kernel(mm, address);
+	struct page *page;
+
+	if (!pte)
+		return NULL;
+	page = virt_to_page(pte);
+	pgtable_page_ctor(page);
+	return page;
+}
+
+static inline void
+pte_free(struct mm_struct *mm, pgtable_t page)
+{
+	pgtable_page_dtor(page);
+	__free_page(page);
+}
+
+#define check_pgt_cache()	do { } while (0)
+
+#endif /* _ALPHA_PGALLOC_H */
-- 
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