PGSCAN_KHUGEPAGED
{ "pgscan_khugepaged", PGSCAN_KHUGEPAGED },
case PGSCAN_KHUGEPAGED:
memcg_page_state(memcg, PGSCAN_KHUGEPAGED));
PGSCAN_KHUGEPAGED,
[I(PGSCAN_KHUGEPAGED)] = "pgscan_khugepaged",