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Impact: build failure on uniprocessor When compiling for !CONFIG_SMP, per_cpu_alloc_dyn_array() would fail to compile, since it uses per_cpu_offset, which is not defined for uniprocessor builds. Hence, do not compile per_cpu_alloc_dyn_array() for !CONFIG_SMP. Attempting to call this function in a uniprocessor configuration would be simply wrong in the first place. Signed-off-by: H. Peter Anvin <hpa@zytor.com>