Messages in this thread | | | Date | Wed, 28 Oct 2015 19:09:49 +0000 | From | Catalin Marinas <> | Subject | Re: [PATCH] arm64: Increase the max granular size |
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On Tue, Sep 22, 2015 at 07:59:48PM +0200, Robert Richter wrote: > From: Tirumalesh Chalamarla <tchalamarla@cavium.com> > > Increase the standard cacheline size to avoid having locks in the same > cacheline. > > Cavium's ThunderX core implements cache lines of 128 byte size. With > current granulare size of 64 bytes (L1_CACHE_SHIFT=6) two locks could > share the same cache line leading a performance degradation. > Increasing the size fixes that. > > Increasing the size has no negative impact to cache invalidation on > systems with a smaller cache line. There is an impact on memory usage, > but that's not too important for arm64 use cases. > > Signed-off-by: Tirumalesh Chalamarla <tchalamarla@cavium.com> > Signed-off-by: Robert Richter <rrichter@cavium.com>
Applied. Thanks.
-- Catalin
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