[PATCH 12/15] powerpc/nohash/64: switch to generic version of pte allocation

Mike Rapoport
2019-05-02T15:30:11Z

The 64-bit book-E powerpc implements pte_alloc_one(),
pte_alloc_one_kernel(), pte_free_kernel() and pte_free() the same way as
the generic version.

Switch it to the generic version that does exactly the same thing.

Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
---
arch/powerpc/include/asm/nohash/64/pgalloc.h | 35 ++--------------------------
1 file changed, 2 insertions(+), 33 deletions(-)

diff --git a/arch/powerpc/include/asm/nohash/64/pgalloc.h b/arch/powerpc/include/asm/nohash/64/pgalloc.h
index 66d086f..bfb53a0 100644
--- a/arch/powerpc/include/asm/nohash/64/pgalloc.h
+++ b/arch/powerpc/include/asm/nohash/64/pgalloc.h
@@ -11,6 +11,8 @@
#include <linux/cpumask.h>
#include <linux/percpu.h>

+#include <asm-generic/pgalloc.h> /* for pte_{alloc,free}_one */
+
struct vmemmap_backing {
struct vmemmap_backing *list;
unsigned long phys;
@@ -92,39 +94,6 @@ static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
kmem_cache_free(PGT_CACHE(PMD_CACHE_INDEX), pmd);
}

-
-static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
-{
- return (pte_t *)__get_free_page(GFP_KERNEL | __GFP_ZERO);
-}
-
-static inline pgtable_t pte_alloc_one(struct mm_struct *mm)
-{
- struct page *page;
- pte_t *pte;
-
- pte = (pte_t *)__get_free_page(GFP_KERNEL | __GFP_ZERO | __GFP_ACCOUNT);
- if (!pte)
- return NULL;
- page = virt_to_page(pte);
- if (!pgtable_page_ctor(page)) {
- __free_page(page);
- return NULL;
- }
- return page;
-}
-
-static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
-{
- free_page((unsigned long)pte);
-}
-
-static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage)
-{
- pgtable_page_dtor(ptepage);
- __free_page(ptepage);
-}
-
static inline void pgtable_free(void *table, int shift)
{
if (!shift) {
--
2.7.4