Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759285AbcDHWvU (ORCPT ); Fri, 8 Apr 2016 18:51:20 -0400 Received: from mail-pa0-f67.google.com ([209.85.220.67]:34108 "EHLO mail-pa0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759232AbcDHWut (ORCPT ); Fri, 8 Apr 2016 18:50:49 -0400 From: David Daney To: Will Deacon , linux-arm-kernel@lists.infradead.org, Rob Herring , Frank Rowand , Grant Likely , Pawel Moll , Ian Campbell , Kumar Gala , Ganapatrao Kulkarni , Robert Richter , Ard Biesheuvel , Matt Fleming , Mark Rutland , Catalin Marinas Cc: linux-efi@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, David Daney Subject: [PATCH v16 6/6] arm64, mm, numa: Add NUMA balancing support for arm64. Date: Fri, 8 Apr 2016 15:50:28 -0700 Message-Id: <1460155828-8690-7-git-send-email-ddaney.cavm@gmail.com> X-Mailer: git-send-email 1.7.11.7 In-Reply-To: <1460155828-8690-1-git-send-email-ddaney.cavm@gmail.com> References: <1460155828-8690-1-git-send-email-ddaney.cavm@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1596 Lines: 53 From: Ganapatrao Kulkarni Enable NUMA balancing for arm64 platforms. Add pte, pmd protnone helpers for use by automatic NUMA balancing. Reviewed-by: Robert Richter Signed-off-by: Ganapatrao Kulkarni Signed-off-by: David Daney --- arch/arm64/Kconfig | 1 + arch/arm64/include/asm/pgtable.h | 15 +++++++++++++++ 2 files changed, 16 insertions(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 99f9b55..a578080 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -11,6 +11,7 @@ config ARM64 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST select ARCH_USE_CMPXCHG_LOCKREF select ARCH_SUPPORTS_ATOMIC_RMW + select ARCH_SUPPORTS_NUMA_BALANCING select ARCH_WANT_OPTIONAL_GPIOLIB select ARCH_WANT_COMPAT_IPC_PARSE_VERSION select ARCH_WANT_FRAME_POINTERS diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index 989fef1..89b8f20 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -272,6 +272,21 @@ static inline pgprot_t mk_sect_prot(pgprot_t prot) return __pgprot(pgprot_val(prot) & ~PTE_TABLE_BIT); } +#ifdef CONFIG_NUMA_BALANCING +/* + * See the comment in include/asm-generic/pgtable.h + */ +static inline int pte_protnone(pte_t pte) +{ + return (pte_val(pte) & (PTE_VALID | PTE_PROT_NONE)) == PTE_PROT_NONE; +} + +static inline int pmd_protnone(pmd_t pmd) +{ + return pte_protnone(pmd_pte(pmd)); +} +#endif + /* * THP definitions. */ -- 1.8.3.1