smp_processor_id
()/cpu_[number/logical]_map()
include/asm/smp.h smp_processor_id()
returns the current
processor number, between 0 and NR_CPUS
(the
maximum number of CPUs supported by Linux, currently 32). These
values are not necessarily continuous: to get a number between 0
and smp_num_cpus()
(the number of actual
processors in this machine), the
cpu_number_map()
function is used to map the
processor id to a logical number.
cpu_logical_map()
does the reverse.