Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / ia64 / include / asm / pgalloc.h

diff --git a/kernel/arch/ia64/include/asm/pgalloc.h b/kernel/arch/ia64/include/asm/pgalloc.h
new file mode 100644 (file)
index 0000000..f5e70e9
--- /dev/null
+++ b/kernel/arch/ia64/include/asm/pgalloc.h
@@ -0,0 +1,125 @@
+#ifndef _ASM_IA64_PGALLOC_H
+#define _ASM_IA64_PGALLOC_H
+
+/*
+ * This file contains the functions and defines necessary to allocate
+ * page tables.
+ *
+ * This hopefully works with any (fixed) ia-64 page-size, as defined
+ * in <asm/page.h> (currently 8192).
+ *
+ * Copyright (C) 1998-2001 Hewlett-Packard Co
+ *     David Mosberger-Tang <davidm@hpl.hp.com>
+ * Copyright (C) 2000, Goutham Rao <goutham.rao@intel.com>
+ */
+
+
+#include <linux/compiler.h>
+#include <linux/mm.h>
+#include <linux/page-flags.h>
+#include <linux/threads.h>
+#include <linux/quicklist.h>
+
+#include <asm/mmu_context.h>
+
+static inline pgd_t *pgd_alloc(struct mm_struct *mm)
+{
+       return quicklist_alloc(0, GFP_KERNEL, NULL);
+}
+
+static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
+{
+       quicklist_free(0, NULL, pgd);
+}
+
+#if CONFIG_PGTABLE_LEVELS == 4
+static inline void
+pgd_populate(struct mm_struct *mm, pgd_t * pgd_entry, pud_t * pud)
+{
+       pgd_val(*pgd_entry) = __pa(pud);
+}
+
+static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
+{
+       return quicklist_alloc(0, GFP_KERNEL, NULL);
+}
+
+static inline void pud_free(struct mm_struct *mm, pud_t *pud)
+{
+       quicklist_free(0, NULL, pud);
+}
+#define __pud_free_tlb(tlb, pud, address)      pud_free((tlb)->mm, pud)
+#endif /* CONFIG_PGTABLE_LEVELS == 4 */
+
+static inline void
+pud_populate(struct mm_struct *mm, pud_t * pud_entry, pmd_t * pmd)
+{
+       pud_val(*pud_entry) = __pa(pmd);
+}
+
+static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
+{
+       return quicklist_alloc(0, GFP_KERNEL, NULL);
+}
+
+static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
+{
+       quicklist_free(0, NULL, pmd);
+}
+
+#define __pmd_free_tlb(tlb, pmd, address)      pmd_free((tlb)->mm, pmd)
+
+static inline void
+pmd_populate(struct mm_struct *mm, pmd_t * pmd_entry, pgtable_t pte)
+{
+       pmd_val(*pmd_entry) = page_to_phys(pte);
+}
+#define pmd_pgtable(pmd) pmd_page(pmd)
+
+static inline void
+pmd_populate_kernel(struct mm_struct *mm, pmd_t * pmd_entry, pte_t * pte)
+{
+       pmd_val(*pmd_entry) = __pa(pte);
+}
+
+static inline pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long addr)
+{
+       struct page *page;
+       void *pg;
+
+       pg = quicklist_alloc(0, GFP_KERNEL, NULL);
+       if (!pg)
+               return NULL;
+       page = virt_to_page(pg);
+       if (!pgtable_page_ctor(page)) {
+               quicklist_free(0, NULL, pg);
+               return NULL;
+       }
+       return page;
+}
+
+static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
+                                         unsigned long addr)
+{
+       return quicklist_alloc(0, GFP_KERNEL, NULL);
+}
+
+static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
+{
+       pgtable_page_dtor(pte);
+       quicklist_free_page(0, NULL, pte);
+}
+
+static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
+{
+       quicklist_free(0, NULL, pte);
+}
+
+static inline void check_pgt_cache(void)
+{
+       quicklist_trim(0, NULL, 25, 16);
+}
+
+#define __pte_free_tlb(tlb, pte, address)      pte_free((tlb)->mm, pte)
+
+#endif                         /* _ASM_IA64_PGALLOC_H */