powerpc: Use RCU based pte freeing mechanism for all powerpc
Refactor the RCU based pte free code that was used on ppc64 to be used
on all powerpc.
Additionally refactor pte_free() & pte_free_kernel() into common code
between ppc32 & ppc64.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/include/asm/pgalloc-32.h b/arch/powerpc/include/asm/pgalloc-32.h
index 58c0714..0815eb4 100644
--- a/arch/powerpc/include/asm/pgalloc-32.h
+++ b/arch/powerpc/include/asm/pgalloc-32.h
@@ -3,6 +3,8 @@
#include <linux/threads.h>
+#define PTE_NONCACHE_NUM 0 /* dummy for now to share code w/ppc64 */
+
extern void __bad_pte(pmd_t *pmd);
extern pgd_t *pgd_alloc(struct mm_struct *mm);
@@ -33,10 +35,13 @@
extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr);
extern pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long addr);
-extern void pte_free_kernel(struct mm_struct *mm, pte_t *pte);
-extern void pte_free(struct mm_struct *mm, pgtable_t pte);
-#define __pte_free_tlb(tlb, pte) pte_free((tlb)->mm, (pte))
+static inline void pgtable_free(pgtable_free_t pgf)
+{
+ void *p = (void *)(pgf.val & ~PGF_CACHENUM_MASK);
+
+ free_page((unsigned long)p);
+}
#define check_pgt_cache() do { } while (0)