Uclinux-2008r1-rc8 (bf561) to VDSP5 transplantation (+): __per_cpu_start

SMP is not supported in the original file, so there is no per_cpu problem, but after adding CONFIG_SMP, there are the following errors:

[Error li1021] The following symbols referenced in processor 'p0' could not be resolved:
'__per_cpu_end [___per_cpu_end]' referenced from 'init.dlb[main.doj]'
'__per_cpu_start [___per_cpu_start]' referenced from 'init.dlb[main.doj]'

To do this, we need to add such a statement to the. Init section of the LDF file:

//.percpu
INPUT_SECTION_ALIGN(64)
. = (. + 63) / 64 * 64;
__per_cpu_start = .;
INPUT_SECTIONS($LIBRARIES_CORE_A(.data.percpu))
__per_cpu_end = .;