Man pages matching name proc_buddyinfo in section 5:

proc_buddyinfo.5.en	debian 13 / manpages
proc_buddyinfo.5.de	debian 13 / manpages-de
proc_buddyinfo.5.fr	debian 13 / manpages-fr
proc_buddyinfo.5.pl	debian 13 / manpages-pl
proc_buddyinfo.5.pt_BR	debian 13 / manpages-pt-br
proc_buddyinfo.5.ro	debian 13 / manpages-ro
proc_buddyinfo.5.ru	debian 13 / manpages-ru