On 09/17/2017 08:07 PM, kemi wrote: >>> + if (vmstat_mode) { >>> + if (vmstat_mode == VMSTAT_COARSE_MODE) >>> + return; >>> + } else if (disable_zone_statistics) >>> + return; >>> + >>> if (z->node != numa_node_id()) >>> local_stat = NUMA_OTHER; >> >> A jump label could make this completely out of the way for the case >> where every single cycle matters. > > Could you be more explicit for how to implement it here. Thanks very much. Take a look at include/linux/jump_label.h.