xen: Use this_cpu_ops
Use this_cpu_ops to reduce code size and simplify things in various places. V3->V4: Move instance of this_cpu_inc_return to a later patchset so that this patch can be applied without infrastructure changes. Cc: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Acked-by: NH. Peter Anvin <hpa@zytor.com> Signed-off-by: NChristoph Lameter <cl@linux.com> Signed-off-by: NTejun Heo <tj@kernel.org>
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