From: David Daney <ddaney.cavm@gmail.com>
To: Will Deacon <will.deacon@arm.com>,
linux-arm-kernel@lists.infradead.org,
Rob Herring <robh+dt@kernel.org>,
Frank Rowand <frowand.list@gmail.com>,
Grant Likely <grant.likely@linaro.org>,
Pawel Moll <pawel.moll@arm.com>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
Kumar Gala <galak@codeaurora.org>,
Ganapatrao Kulkarni <gkulkarni@caviumnetworks.com>,
Robert Richter <rrichter@cavium.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Matt Fleming <matt@codeblueprint.co.uk>,
Mark Rutland <mark.rutland@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>
Cc: linux-efi@vger.kernel.org, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org, David Daney <david.daney@cavium.com>
Subject: [PATCH v16 6/6] arm64, mm, numa: Add NUMA balancing support for arm64.
Date: Fri, 8 Apr 2016 15:50:28 -0700 [thread overview]
Message-ID: <1460155828-8690-7-git-send-email-ddaney.cavm@gmail.com> (raw)
In-Reply-To: <1460155828-8690-1-git-send-email-ddaney.cavm@gmail.com>
From: Ganapatrao Kulkarni <gkulkarni@caviumnetworks.com>
Enable NUMA balancing for arm64 platforms.
Add pte, pmd protnone helpers for use by automatic NUMA balancing.
Reviewed-by: Robert Richter <rrichter@cavium.com>
Signed-off-by: Ganapatrao Kulkarni <gkulkarni@caviumnetworks.com>
Signed-off-by: David Daney <david.daney@cavium.com>
---
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
next prev parent reply other threads:[~2016-04-08 22:51 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-08 22:50 [PATCH v16 0/6] arm64, numa: Add numa support for arm64 platforms David Daney
2016-04-08 22:50 ` [PATCH v16 1/6] efi: ARM/arm64: ignore DT memory nodes instead of removing them David Daney
2016-04-14 11:02 ` Steve Capper
2016-04-14 11:10 ` Ard Biesheuvel
2016-04-14 12:09 ` Steve Capper
2016-04-15 14:03 ` Will Deacon
2016-04-15 14:06 ` Ard Biesheuvel
2016-04-15 14:08 ` Matt Fleming
2016-04-15 14:08 ` Will Deacon
2016-04-08 22:50 ` [PATCH v16 2/6] Documentation, dt, numa: dt bindings for NUMA David Daney
2016-04-08 22:50 ` [PATCH v16 3/6] of, numa: Add NUMA of binding implementation David Daney
2016-04-08 22:50 ` [PATCH v16 4/6] arm64: Move unflatten_device_tree() call earlier David Daney
2016-04-08 22:50 ` [PATCH v16 5/6] arm64, numa: Add NUMA support for arm64 platforms David Daney
2016-04-08 22:50 ` David Daney [this message]
2016-04-13 15:59 ` [PATCH v16 6/6] arm64, mm, numa: Add NUMA balancing support for arm64 Steve Capper
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