1 files changed, 30 insertions, 0 deletions
diff --git a/arch/sh/include/asm/pgalloc_nopmd.h b/arch/sh/include/asm/pgalloc_nopmd.h
new file mode 100644
index 00000000000..e4b344c37e7
--- /dev/null
+++ b/arch/sh/include/asm/pgalloc_nopmd.h
@@ -0,0 +1,30 @@
+#ifndef __ASM_SH_PGALLOC_NOPMD_H
+#define __ASM_SH_PGALLOC_NOPMD_H
+
+#define QUICK_PGD 0	/* We preserve special mappings over free */
+
+static inline void pgd_ctor(void *x)
+{
+	pgd_t *pgd = x;
+
+	memcpy(pgd + USER_PTRS_PER_PGD,
+	       swapper_pg_dir + USER_PTRS_PER_PGD,
+	       (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
+}
+
+static inline pgd_t *pgd_alloc(struct mm_struct *mm)
+{
+	return quicklist_alloc(QUICK_PGD, GFP_KERNEL | __GFP_REPEAT, pgd_ctor);
+}
+
+static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
+{
+	quicklist_free(QUICK_PGD, NULL, pgd);
+}
+
+static inline void __check_pgt_cache(void)
+{
+	quicklist_trim(QUICK_PGD, NULL, 25, 16);
+}
+
+#endif /* __ASM_SH_PGALLOC_NOPMD_H */