Man pages matching name arch_prctl in section 2:

arch_prctl.2.en	debian 10 / manpages-dev
arch_prctl.2.es	debian 10 / manpages-es
arch_prctl.2.ja	debian 10 / manpages-ja-dev
arch_prctl.2.en	debian 11 / manpages-dev
arch_prctl.2.fr	debian 11 / manpages-fr-dev
arch_prctl.2.ja	debian 11 / manpages-ja-dev
arch_prctl.2.en	debian 12 / manpages-dev
arch_prctl.2.es	debian 12 / manpages-es-dev
arch_prctl.2.fr	debian 12 / manpages-fr-dev
arch_prctl.2.ja	debian 12 / manpages-ja-dev