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authorMike Rapoport <rppt@linux.ibm.com>2019-09-23 15:35:28 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-09-24 15:54:09 -0700
commit1b9a9d8564cbc49e1e5529460ca70bf7353aa4d1 (patch)
tree940cd65e065446cd281fa147084612122c4fa476 /arch
parent6fb12766f7fcd7934b09fbfbd32a725cc2febf96 (diff)
downloadlinux-1b9a9d8564cbc49e1e5529460ca70bf7353aa4d1.tar.gz
microblaze: switch to generic version of pte allocation
The microblaze implementation of pte_alloc_one() has a provision to allocated PTEs from high memory, but neither CONFIG_HIGHPTE nor pte_map*() versions for suitable for HIGHPTE are defined. Except that, microblaze version of pte_alloc_one() is identical to the generic one as well as the implementations of pte_free() and pte_free_kernel(). Switch microblaze to use the generic versions of these functions. Also remove pte_free_slow() that is not referenced anywhere in the code. Link: http://lkml.kernel.org/r/1565690952-32158-1-git-send-email-rppt@linux.ibm.com Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Cc: Michal Simek <monstr@monstr.eu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/microblaze/include/asm/pgalloc.h39
1 files changed, 3 insertions, 36 deletions
diff --git a/arch/microblaze/include/asm/pgalloc.h b/arch/microblaze/include/asm/pgalloc.h
index ac0731881751..7ecb05baa601 100644
--- a/arch/microblaze/include/asm/pgalloc.h
+++ b/arch/microblaze/include/asm/pgalloc.h
@@ -21,6 +21,9 @@
#include <asm/cache.h>
#include <asm/pgtable.h>
+#define __HAVE_ARCH_PTE_ALLOC_ONE_KERNEL
+#include <asm-generic/pgalloc.h>
+
extern void __bad_pte(pmd_t *pmd);
static inline pgd_t *get_pgd(void)
@@ -47,42 +50,6 @@ static inline void free_pgd(pgd_t *pgd)
extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm);
-static inline struct page *pte_alloc_one(struct mm_struct *mm)
-{
- struct page *ptepage;
-
-#ifdef CONFIG_HIGHPTE
- int flags = GFP_KERNEL | __GFP_ZERO | __GFP_HIGHMEM;
-#else
- int flags = GFP_KERNEL | __GFP_ZERO;
-#endif
-
- ptepage = alloc_pages(flags, 0);
- if (!ptepage)
- return NULL;
- if (!pgtable_page_ctor(ptepage)) {
- __free_page(ptepage);
- return NULL;
- }
- return ptepage;
-}
-
-static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
-{
- free_page((unsigned long)pte);
-}
-
-static inline void pte_free_slow(struct page *ptepage)
-{
- __free_page(ptepage);
-}
-
-static inline void pte_free(struct mm_struct *mm, struct page *ptepage)
-{
- pgtable_page_dtor(ptepage);
- __free_page(ptepage);
-}
-
#define __pte_free_tlb(tlb, pte, addr) pte_free((tlb)->mm, (pte))
#define pmd_populate(mm, pmd, pte) \