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authorRussell King <rmk+kernel@arm.linux.org.uk>2010-12-04 17:08:32 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-12-05 08:39:36 +0000
commitdaf8741675562197d4fb4c4e9d773f53494203a5 (patch)
treea21505624d4c7963ae70e46f25b13f449c22cc18 /arch/arm/kernel/vmlinux.lds.S
parent0b05da7200dd56a5364c4d9cf5441715c1d706ed (diff)
ARM: implement support for read-mostly sections
As our SMP implementation uses MESI protocols. Grouping together data which is mostly only read together means that we avoid unnecessary cache line bouncing when this code shares a cache line with other data. In other words, cache lines associated with read-mostly data are expected to spend most of their time in shared state. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/kernel/vmlinux.lds.S')
-rw-r--r--arch/arm/kernel/vmlinux.lds.S1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index cead8893b46b..1581f6d18cca 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -167,6 +167,7 @@ SECTIONS
NOSAVE_DATA
CACHELINE_ALIGNED_DATA(32)
+ READ_MOSTLY_DATA(32)
/*
* The exception fixup table (might need resorting at runtime)