Function redbpf::cpus::get_possible_num

pub fn get_possible_num() -> usize

Returns the number of possible CPUs.

The number of possible CPUs is static after it is set during boot time discovery phase. For reference, see comments in kernel source: https://elixir.bootlin.com/linux/v5.8/source/arch/x86/kernel/smpboot.c#L1447