On Wed 25-11-15 10:04:44, Christoph Lameter wrote: > On Wed, 25 Nov 2015, Joonsoo Kim wrote: > > > I think that maintaining duplicate counter to guarantee accuracy isn't > > reasonable solution. It would cause more overhead to the system. > > Simply remove the counter from the vmstat handling and do it differently > then.
We definitely do not want yet another set of counters. vmstat counters are not only to be exported into the userspace. We have in kernel users as well. I do agree that there are users who can cope with some level of imprecision though and those which depend on the accuracy can use zone_page_state_snapshot which doesn't impose any overhead on others. [...] -- Michal Hocko SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
