Man pages matching name sys::info::device::cpu in section 3pm:

Sys::Info::Device::CPU.3pm.en	debian 10 / libsys-info-base-perl
Sys::Info::Device::CPU.3pm.en	debian 11 / libsys-info-base-perl
Sys::Info::Device::CPU.3pm.en	debian 12 / libsys-info-base-perl