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authorGanapatrao Kulkarni <gkulkarni@caviumnetworks.com>2016-04-08 15:50:28 -0700
committerWill Deacon <will.deacon@arm.com>2016-04-15 18:06:09 +0100
commit561662301eb6a40d569453b3555fc8cfce094b93 (patch)
tree9c83f419e10821a1c59ea2cb4c70ca6d36176b51 /arch/arm64/include/asm/pgtable.h
parentarm64, numa: Add NUMA support for arm64 platforms. (diff)
downloadlinux-dev-561662301eb6a40d569453b3555fc8cfce094b93.tar.xz
linux-dev-561662301eb6a40d569453b3555fc8cfce094b93.zip
arm64, mm, numa: Add NUMA balancing support for arm64.
Enable NUMA balancing for arm64 platforms. Add pte, pmd protnone helpers for use by automatic NUMA balancing. Reviewed-by: Steve Capper <steve.capper@arm.com> Reviewed-by: Robert Richter <rrichter@cavium.com> Signed-off-by: Ganapatrao Kulkarni <gkulkarni@caviumnetworks.com> Signed-off-by: David Daney <david.daney@cavium.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to '')
-rw-r--r--arch/arm64/include/asm/pgtable.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index 2abfa4d09e65..3c91b179089a 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -266,6 +266,21 @@ 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.
*/