perf tools: Add support to dynamically get cacheline size
Different arches may have different cacheline sizes. Look it up and set a global variable for reference. Signed-off-by: NDon Zickus <dzickus@redhat.com> Link: http://lkml.kernel.org/r/1401480605-97442-1-git-send-email-dzickus@redhat.comSigned-off-by: NJiri Olsa <jolsa@kernel.org>
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