diff options
| -rw-r--r-- | arch/powerpc/Kconfig | 13 | ||||
| -rw-r--r-- | arch/powerpc/mm/init_64.c | 17 | ||||
| -rw-r--r-- | include/asm-powerpc/pgalloc-64.h | 31 |
3 files changed, 19 insertions, 42 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index ecd459dd1baf..ccc5410af996 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -120,19 +120,6 @@ config GENERIC_BUG config SYS_SUPPORTS_APM_EMULATION bool -# -# Powerpc uses the slab allocator to manage its ptes and the -# page structs of ptes are used for splitting the page table -# lock for configurations supporting more than SPLIT_PTLOCK_CPUS. -# -# In that special configuration the page structs of slabs are modified. -# This setting disables the selection of SLUB as a slab allocator. -# -config ARCH_USES_SLAB_PAGE_STRUCT - bool - default y - depends on SPLIT_PTLOCK_CPUS <= NR_CPUS - config DEFAULT_UIMAGE bool help diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c index fe1fe852181a..7312a265545f 100644 --- a/arch/powerpc/mm/init_64.c +++ b/arch/powerpc/mm/init_64.c @@ -146,21 +146,16 @@ static void zero_ctor(void *addr, struct kmem_cache *cache, unsigned long flags) memset(addr, 0, kmem_cache_size(cache)); } -#ifdef CONFIG_PPC_64K_PAGES -static const unsigned int pgtable_cache_size[3] = { - PTE_TABLE_SIZE, PMD_TABLE_SIZE, PGD_TABLE_SIZE -}; -static const char *pgtable_cache_name[ARRAY_SIZE(pgtable_cache_size)] = { - "pte_pmd_cache", "pmd_cache", "pgd_cache", -}; -#else static const unsigned int pgtable_cache_size[2] = { - PTE_TABLE_SIZE, PMD_TABLE_SIZE + PGD_TABLE_SIZE, PMD_TABLE_SIZE }; static const char *pgtable_cache_name[ARRAY_SIZE(pgtable_cache_size)] = { - "pgd_pte_cache", "pud_pmd_cache", -}; +#ifdef CONFIG_PPC_64K_PAGES + "pgd_cache", "pmd_cache", +#else + "pgd_cache", "pud_pmd_cache", #endif /* CONFIG_PPC_64K_PAGES */ +}; #ifdef CONFIG_HUGETLB_PAGE /* Hugepages need one extra cache, initialized in hugetlbpage.c. We diff --git a/include/asm-powerpc/pgalloc-64.h b/include/asm-powerpc/pgalloc-64.h index 30b50cf56e2c..d9a3a8ca58a1 100644 --- a/include/asm-powerpc/pgalloc-64.h +++ b/include/asm-powerpc/pgalloc-64.h @@ -14,18 +14,11 @@ extern struct kmem_cache *pgtable_cache[]; -#ifdef CONFIG_PPC_64K_PAGES -#define PTE_CACHE_NUM 0 -#define PMD_CACHE_NUM 1 -#define PGD_CACHE_NUM 2 -#define HUGEPTE_CACHE_NUM 3 -#else -#define PTE_CACHE_NUM 0 -#define PMD_CACHE_NUM 1 -#define PUD_CACHE_NUM 1 -#define PGD_CACHE_NUM 0 -#define HUGEPTE_CACHE_NUM 2 -#endif +#define PGD_CACHE_NUM 0 +#define PUD_CACHE_NUM 1 +#define PMD_CACHE_NUM 1 +#define HUGEPTE_CACHE_NUM 2 +#define PTE_NONCACHE_NUM 3 /* from GFP rather than kmem_cache */ static inline pgd_t *pgd_alloc(struct mm_struct *mm) { @@ -91,8 +84,7 @@ static inline void pmd_free(pmd_t *pmd) static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address) { - return kmem_cache_alloc(pgtable_cache[PTE_CACHE_NUM], - GFP_KERNEL|__GFP_REPEAT); + return (pte_t *)__get_free_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO); } static inline struct page *pte_alloc_one(struct mm_struct *mm, @@ -103,12 +95,12 @@ static inline struct page *pte_alloc_one(struct mm_struct *mm, static inline void pte_free_kernel(pte_t *pte) { - kmem_cache_free(pgtable_cache[PTE_CACHE_NUM], pte); + free_page((unsigned long)pte); } static inline void pte_free(struct page *ptepage) { - pte_free_kernel(page_address(ptepage)); + __free_page(ptepage); } #define PGF_CACHENUM_MASK 0x3 @@ -130,14 +122,17 @@ static inline void pgtable_free(pgtable_free_t pgf) void *p = (void *)(pgf.val & ~PGF_CACHENUM_MASK); int cachenum = pgf.val & PGF_CACHENUM_MASK; - kmem_cache_free(pgtable_cache[cachenum], p); + if (cachenum == PTE_NONCACHE_NUM) + free_page((unsigned long)p); + else + kmem_cache_free(pgtable_cache[cachenum], p); } extern void pgtable_free_tlb(struct mmu_gather *tlb, pgtable_free_t pgf); #define __pte_free_tlb(tlb, ptepage) \ pgtable_free_tlb(tlb, pgtable_free_cache(page_address(ptepage), \ - PTE_CACHE_NUM, PTE_TABLE_SIZE-1)) + PTE_NONCACHE_NUM, PTE_TABLE_SIZE-1)) #define __pmd_free_tlb(tlb, pmd) \ pgtable_free_tlb(tlb, pgtable_free_cache(pmd, \ PMD_CACHE_NUM, PMD_TABLE_SIZE-1)) |