[RFC PATCH 5/6] powerpc/mm: Use page fragments for allocation page table at PMD level
From: Aneesh Kumar K.V <hidden>
Date: 2018-02-14 13:50:44
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
Signed-off-by: Aneesh Kumar K.V <redacted> --- arch/powerpc/include/asm/book3s/64/pgalloc.h | 9 ++------- arch/powerpc/mm/init-common.c | 2 -- arch/powerpc/mm/pgtable_64.c | 2 +- 3 files changed, 3 insertions(+), 10 deletions(-)
diff --git a/arch/powerpc/include/asm/book3s/64/pgalloc.h b/arch/powerpc/include/asm/book3s/64/pgalloc.h
index e5d104caae26..f91a8bc1d67f 100644
--- a/arch/powerpc/include/asm/book3s/64/pgalloc.h
+++ b/arch/powerpc/include/asm/book3s/64/pgalloc.h@@ -128,17 +128,12 @@ static inline void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pud, static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) { - pmd_t *pmd; - pmd = kmem_cache_alloc(PGT_CACHE(PMD_CACHE_INDEX), - pgtable_gfp_flags(mm, GFP_KERNEL)); - memset(pmd, 0, PMD_TABLE_SIZE); - return pmd; - + return pmd_fragment_alloc(mm, addr); } static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) { - kmem_cache_free(PGT_CACHE(PMD_CACHE_INDEX), pmd); + pmd_fragment_free((unsigned long *)pmd); } static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd,
diff --git a/arch/powerpc/mm/init-common.c b/arch/powerpc/mm/init-common.c
index f92dd8cee3c5..0382df3ef6a8 100644
--- a/arch/powerpc/mm/init-common.c
+++ b/arch/powerpc/mm/init-common.c@@ -78,8 +78,6 @@ void pgtable_cache_init(void) { pgtable_cache_add(PGD_INDEX_SIZE, pgd_ctor); - if (PMD_CACHE_INDEX && !PGT_CACHE(PMD_CACHE_INDEX)) - pgtable_cache_add(PMD_CACHE_INDEX, pmd_ctor); /* * In all current configs, when the PUD index exists it's the * same size as either the pgd or pmd index except with THP enabled
diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c
index db3ee7ab8418..05267a8764f5 100644
--- a/arch/powerpc/mm/pgtable_64.c
+++ b/arch/powerpc/mm/pgtable_64.c@@ -524,7 +524,7 @@ void pgtable_free_tlb(struct mmu_gather *tlb, void *table, int index) pte_fragment_free(table, 0); break; case PMD_INDEX: - kmem_cache_free(PGT_CACHE(PMD_CACHE_INDEX), table); + pmd_fragment_free(table); break; case PUD_INDEX: kmem_cache_free(PGT_CACHE(PUD_CACHE_INDEX), table);
--
2.14.3