Add the rt linux 4.1.3-rt3 as base

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

diff --git a/kernel/arch/sh/include/asm/pgalloc.h b/kernel/arch/sh/include/asm/pgalloc.h
new file mode 100644 (file)
index 0000000..a33673b
--- /dev/null
+++ b/kernel/arch/sh/include/asm/pgalloc.h
@@ -0,0 +1,79 @@
+#ifndef __ASM_SH_PGALLOC_H
+#define __ASM_SH_PGALLOC_H
+
+#include <linux/quicklist.h>
+#include <asm/page.h>
+
+#define QUICK_PT 0     /* Other page table pages that are zero on free */
+
+extern pgd_t *pgd_alloc(struct mm_struct *);
+extern void pgd_free(struct mm_struct *mm, pgd_t *pgd);
+
+#if PAGETABLE_LEVELS > 2
+extern void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd);
+extern pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address);
+extern void pmd_free(struct mm_struct *mm, pmd_t *pmd);
+#endif
+
+static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
+                                      pte_t *pte)
+{
+       set_pmd(pmd, __pmd((unsigned long)pte));
+}
+
+static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
+                               pgtable_t pte)
+{
+       set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
+}
+#define pmd_pgtable(pmd) pmd_page(pmd)
+
+/*
+ * Allocate and free page tables.
+ */
+static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
+                                         unsigned long address)
+{
+       return quicklist_alloc(QUICK_PT, GFP_KERNEL | __GFP_REPEAT, NULL);
+}
+
+static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
+                                       unsigned long address)
+{
+       struct page *page;
+       void *pg;
+
+       pg = quicklist_alloc(QUICK_PT, GFP_KERNEL | __GFP_REPEAT, NULL);
+       if (!pg)
+               return NULL;
+       page = virt_to_page(pg);
+       if (!pgtable_page_ctor(page)) {
+               quicklist_free(QUICK_PT, NULL, pg);
+               return NULL;
+       }
+       return page;
+}
+
+static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
+{
+       quicklist_free(QUICK_PT, NULL, pte);
+}
+
+static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
+{
+       pgtable_page_dtor(pte);
+       quicklist_free_page(QUICK_PT, NULL, pte);
+}
+
+#define __pte_free_tlb(tlb,pte,addr)                   \
+do {                                                   \
+       pgtable_page_dtor(pte);                         \
+       tlb_remove_page((tlb), (pte));                  \
+} while (0)
+
+static inline void check_pgt_cache(void)
+{
+       quicklist_trim(QUICK_PT, NULL, 25, 16);
+}
+
+#endif /* __ASM_SH_PGALLOC_H */