From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e18.ny.us.ibm.com (e18.ny.us.ibm.com [129.33.205.208]) (using TLSv1.2 with cipher CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3qhmLc3DTnzDqPq for ; Sat, 9 Apr 2016 16:16:40 +1000 (AEST) Received: from localhost by e18.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Sat, 9 Apr 2016 02:16:38 -0400 Received: from b01cxnp22033.gho.pok.ibm.com (b01cxnp22033.gho.pok.ibm.com [9.57.198.23]) by d01dlp03.pok.ibm.com (Postfix) with ESMTP id A911AC9003E for ; Sat, 9 Apr 2016 02:16:31 -0400 (EDT) Received: from d01av05.pok.ibm.com (d01av05.pok.ibm.com [9.56.224.195]) by b01cxnp22033.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u396GaEj33685726 for ; Sat, 9 Apr 2016 06:16:36 GMT Received: from d01av05.pok.ibm.com (localhost [127.0.0.1]) by d01av05.pok.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u396AiUp017020 for ; Sat, 9 Apr 2016 02:10:45 -0400 From: "Aneesh Kumar K.V" To: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au Cc: linuxppc-dev@lists.ozlabs.org, "Aneesh Kumar K.V" Subject: [PATCH V2 50/68] powerpc/mm: Simplify the code dropping 4 level table #ifdef Date: Sat, 9 Apr 2016 11:43:46 +0530 Message-Id: <1460182444-2468-51-git-send-email-aneesh.kumar@linux.vnet.ibm.com> In-Reply-To: <1460182444-2468-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> References: <1460182444-2468-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Simplify the code by dropping 4 level page table #ifdef. We are always 4 level now Signed-off-by: Aneesh Kumar K.V --- arch/powerpc/include/asm/book3s/64/pgalloc.h | 57 +++++++++------------------- 1 file changed, 18 insertions(+), 39 deletions(-) diff --git a/arch/powerpc/include/asm/book3s/64/pgalloc.h b/arch/powerpc/include/asm/book3s/64/pgalloc.h index 54017260c8bf..2a246245eca0 100644 --- a/arch/powerpc/include/asm/book3s/64/pgalloc.h +++ b/arch/powerpc/include/asm/book3s/64/pgalloc.h @@ -51,7 +51,6 @@ static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) kmem_cache_free(PGT_CACHE(PGD_INDEX_SIZE), pgd); } -#ifndef CONFIG_PPC_64K_PAGES static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud) { pgd_set(pgd, __pgtable_ptr_val(pud)); @@ -78,7 +77,13 @@ static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, { pmd_set(pmd, __pgtable_ptr_val(pte)); } - +/* + * FIXME!! + * Between 4K and 64K pages, we differ in what is stored in pmd. ie. + * typedef pte_t *pgtable_t; -> 64K + * typedef struct page *pgtable_t; -> 4k + */ +#ifdef CONFIG_PPC_4K_PAGES static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t pte_page) { @@ -176,36 +181,6 @@ extern void pgtable_free_tlb(struct mmu_gather *tlb, void *table, int shift); extern void __tlb_remove_table(void *_table); #endif -#ifndef __PAGETABLE_PUD_FOLDED -/* book3s 64 is 4 level page table */ -static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud) -{ - pgd_set(pgd, __pgtable_ptr_val(pud)); -} - -static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr) -{ - return kmem_cache_alloc(PGT_CACHE(PUD_INDEX_SIZE), - GFP_KERNEL|__GFP_REPEAT); -} - -static inline void pud_free(struct mm_struct *mm, pud_t *pud) -{ - kmem_cache_free(PGT_CACHE(PUD_INDEX_SIZE), pud); -} -#endif - -static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) -{ - pud_set(pud, __pgtable_ptr_val(pmd)); -} - -static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, - pte_t *pte) -{ - pmd_set(pmd, __pgtable_ptr_val(pte)); -} - static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, pgtable_t pte_page) { @@ -245,7 +220,7 @@ static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t table, tlb_flush_pgtable(tlb, address); pgtable_free_tlb(tlb, table, 0); } -#endif /* CONFIG_PPC_64K_PAGES */ +#endif /* CONFIG_PPC_4K_PAGES */ static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) { @@ -258,13 +233,17 @@ static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) kmem_cache_free(PGT_CACHE(PMD_CACHE_INDEX), pmd); } -#define __pmd_free_tlb(tlb, pmd, addr) \ - pgtable_free_tlb(tlb, pmd, PMD_CACHE_INDEX) -#ifndef __PAGETABLE_PUD_FOLDED -#define __pud_free_tlb(tlb, pud, addr) \ - pgtable_free_tlb(tlb, pud, PUD_INDEX_SIZE) +static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd, + unsigned long address) +{ + return pgtable_free_tlb(tlb, pmd, PMD_CACHE_INDEX); +} -#endif /* __PAGETABLE_PUD_FOLDED */ +static inline void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pud, + unsigned long address) +{ + pgtable_free_tlb(tlb, pud, PUD_INDEX_SIZE); +} #define check_pgt_cache() do { } while (0) -- 2.5.0