PGACTIVATE
PGACTIVATE,
__count_vm_events(PGACTIVATE, nr_pages);
count_memcg_events(lruvec_memcg(lruvec), PGACTIVATE, nr_pages);
count_memcg_folio_events(folio, PGACTIVATE, nr_pages);
count_vm_events(PGACTIVATE, pgactivate);
[I(PGACTIVATE)] = "pgactivate",