Man pages matching name cpu_alloc in section 3:

CPU_ALLOC.3.en	debian 10 / manpages-dev
CPU_ALLOC.3.ja	debian 10 / manpages-ja-dev
CPU_ALLOC.3.en	debian 11 / manpages-dev
CPU_ALLOC.3.fr	debian 11 / manpages-fr-dev
CPU_ALLOC.3.ja	debian 11 / manpages-ja-dev
CPU_ALLOC.3.en	debian 12 / manpages-dev
CPU_ALLOC.3.fr	debian 12 / manpages-fr-dev
CPU_ALLOC.3.ja	debian 12 / manpages-ja-dev
CPU_ALLOC.3.ru	debian 12 / manpages-ru-dev