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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>
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@ -23,4 +23,6 @@
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#define ARCH_SLAB_MINALIGN 8
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#endif
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#define __read_mostly __attribute__((__section__(".data..read_mostly")))
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#endif
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@ -167,6 +167,7 @@ SECTIONS
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NOSAVE_DATA
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CACHELINE_ALIGNED_DATA(32)
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READ_MOSTLY_DATA(32)
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/*
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* The exception fixup table (might need resorting at runtime)
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