From: Ganapatrao Kulkarni <gkulkarni@caviumnetworks.com>
To: <linux-arm-kernel@lists.infradead.org>,
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Cc: <gpkulkarni@gmail.com>
Subject: [PATCH v10 6/8] arm64, mm, numa: Adding numa balancing support for arm64.
Date: Tue, 2 Feb 2016 15:39:21 +0530 [thread overview]
Message-ID: <1454407763-1017-7-git-send-email-gkulkarni@caviumnetworks.com> (raw)
In-Reply-To: <1454407763-1017-1-git-send-email-gkulkarni@caviumnetworks.com>
enabled numa balancing for arm64 platforms.
added 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>
---
arch/arm64/Kconfig | 1 +
arch/arm64/include/asm/pgtable.h | 18 ++++++++++++++++++
2 files changed, 19 insertions(+)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index fcf3950..8a7c02a 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 if NUMA
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 2d545d7a..24ce546 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -347,6 +347,24 @@ static inline pgprot_t mk_sect_prot(pgprot_t prot)
return __pgprot(pgprot_val(prot) & ~PTE_TABLE_BIT);
}
+#ifdef CONFIG_NUMA_BALANCING
+
+/*
+ * These work without NUMA balancing but the kernel does not care. 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 /* CONFIG_NUMA_BALANCING */
+
/*
* THP definitions.
*/
--
1.8.1.4
next prev parent reply other threads:[~2016-02-02 10:26 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-02 10:09 [PATCH v10 0/8] arm64, numa: Add numa support for arm64 platforms Ganapatrao Kulkarni
2016-02-02 10:09 ` [PATCH v10 1/8] arm64, numa: adding " Ganapatrao Kulkarni
2016-02-02 10:09 ` [PATCH v10 2/8] Documentation, dt, numa: dt bindings for numa Ganapatrao Kulkarni
2016-02-02 10:09 ` [PATCH v10 3/8] dt, numa: adding numa dt binding implementation Ganapatrao Kulkarni
2016-02-02 23:34 ` Rob Herring
2016-02-04 11:15 ` Ganapatrao Kulkarni
2016-02-11 14:50 ` Rob Herring
2016-02-11 15:32 ` Robert Richter
2016-02-11 15:58 ` Ganapatrao Kulkarni
2016-02-02 10:09 ` [PATCH v10 4/8] arm64, numa : Enable numa dt for arm64 platforms Ganapatrao Kulkarni
2016-02-02 10:09 ` [PATCH v10 5/8] arm64, dt, thunderx: Add initial dts for Cavium Thunderx in 2 node topology Ganapatrao Kulkarni
2016-02-02 10:09 ` Ganapatrao Kulkarni [this message]
2016-02-02 10:09 ` [PATCH v10 7/8] topology, cleanup: Avoid redefinition of cpumask_of_pcibus in asm header files Ganapatrao Kulkarni
2016-02-02 10:09 ` [PATCH v10 8/8] numa, mm, cleanup: remove redundant NODE_DATA macro from " Ganapatrao Kulkarni
2016-02-07 8:40 ` kbuild test robot
2016-02-02 11:26 ` [PATCH v10 0/8] arm64, numa: Add numa support for arm64 platforms Robert Richter
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