From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Daney Subject: [PATCH v15 6/6] arm64, mm, numa: Add NUMA balancing support for arm64. Date: Tue, 8 Mar 2016 15:59:47 -0800 Message-ID: <1457481587-8976-7-git-send-email-ddaney.cavm@gmail.com> References: <1457481587-8976-1-git-send-email-ddaney.cavm@gmail.com> Return-path: In-Reply-To: <1457481587-8976-1-git-send-email-ddaney.cavm-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> Sender: linux-efi-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Will Deacon , linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.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-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, David Daney List-Id: devicetree@vger.kernel.org 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 7013087..20f5192 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 819aff5..2150cb7 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -348,6 +348,21 @@ 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