Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756266AbbGTO2s (ORCPT ); Mon, 20 Jul 2015 10:28:48 -0400 Received: from mga11.intel.com ([192.55.52.93]:44218 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932426AbbGTOV1 (ORCPT ); Mon, 20 Jul 2015 10:21:27 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.15,508,1432623600"; d="scan'208";a="750785429" From: "Kirill A. Shutemov" To: Andrew Morton , Andrea Arcangeli , Hugh Dickins Cc: Dave Hansen , Mel Gorman , Rik van Riel , Vlastimil Babka , Christoph Lameter , Naoya Horiguchi , Steve Capper , "Aneesh Kumar K.V" , Johannes Weiner , Michal Hocko , Jerome Marchand , Sasha Levin , linux-kernel@vger.kernel.org, linux-mm@kvack.org, "Kirill A. Shutemov" Subject: [PATCHv9 22/36] sparc, thp: remove infrastructure for handling splitting PMDs Date: Mon, 20 Jul 2015 17:20:55 +0300 Message-Id: <1437402069-105900-23-git-send-email-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1437402069-105900-1-git-send-email-kirill.shutemov@linux.intel.com> References: <1437402069-105900-1-git-send-email-kirill.shutemov@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2437 Lines: 79 With new refcounting we don't need to mark PMDs splitting. Let's drop code to handle this. Signed-off-by: Kirill A. Shutemov --- arch/sparc/include/asm/pgtable_64.h | 16 ---------------- arch/sparc/mm/fault_64.c | 3 --- arch/sparc/mm/gup.c | 2 +- 3 files changed, 1 insertion(+), 20 deletions(-) diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h index 5833dc5ee7d7..7a38d6a576c5 100644 --- a/arch/sparc/include/asm/pgtable_64.h +++ b/arch/sparc/include/asm/pgtable_64.h @@ -681,13 +681,6 @@ static inline unsigned long pmd_trans_huge(pmd_t pmd) return pte_val(pte) & _PAGE_PMD_HUGE; } -static inline unsigned long pmd_trans_splitting(pmd_t pmd) -{ - pte_t pte = __pte(pmd_val(pmd)); - - return pmd_trans_huge(pmd) && pte_special(pte); -} - #define has_transparent_hugepage() 1 static inline pmd_t pmd_mkold(pmd_t pmd) @@ -744,15 +737,6 @@ static inline pmd_t pmd_mkwrite(pmd_t pmd) return __pmd(pte_val(pte)); } -static inline pmd_t pmd_mksplitting(pmd_t pmd) -{ - pte_t pte = __pte(pmd_val(pmd)); - - pte = pte_mkspecial(pte); - - return __pmd(pte_val(pte)); -} - static inline pgprot_t pmd_pgprot(pmd_t entry) { unsigned long val = pmd_val(entry); diff --git a/arch/sparc/mm/fault_64.c b/arch/sparc/mm/fault_64.c index 479823249429..a504a4d85ebd 100644 --- a/arch/sparc/mm/fault_64.c +++ b/arch/sparc/mm/fault_64.c @@ -113,9 +113,6 @@ static unsigned int get_user_insn(unsigned long tpc) #ifdef CONFIG_TRANSPARENT_HUGEPAGE if (pmd_trans_huge(*pmdp)) { - if (pmd_trans_splitting(*pmdp)) - goto out_irq_enable; - pa = pmd_pfn(*pmdp) << PAGE_SHIFT; pa += tpc & ~HPAGE_MASK; diff --git a/arch/sparc/mm/gup.c b/arch/sparc/mm/gup.c index 9091c5daa2e1..eb3d8e8ebc6b 100644 --- a/arch/sparc/mm/gup.c +++ b/arch/sparc/mm/gup.c @@ -114,7 +114,7 @@ static int gup_pmd_range(pud_t pud, unsigned long addr, unsigned long end, pmd_t pmd = *pmdp; next = pmd_addr_end(addr, end); - if (pmd_none(pmd) || pmd_trans_splitting(pmd)) + if (pmd_none(pmd)) return 0; if (unlikely(pmd_large(pmd))) { if (!gup_huge_pmd(pmdp, pmd, addr, next, -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/