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ARM: prefetch: add support for prefetchw using pldw on SMP ARMv7+ CPUs
authorWill Deacon <will.deacon@arm.com>
Wed, 26 Jun 2013 16:03:40 +0000 (17:03 +0100)
committerWill Deacon <will.deacon@arm.com>
Mon, 30 Sep 2013 15:42:55 +0000 (16:42 +0100)
SMP ARMv7 CPUs implement the pldw instruction, which allows them to
prefetch data cachelines in an exclusive state.

This patch defines the prefetchw macro using pldw for CPUs that support
it.

Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>

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