tree 3ab699bd18fc1c3b27224620b21a3800ed567402
parent fcff7d7eebe6d31e2ce20d994555c86a90197034
author Vladimir Davydov <vdavydov@virtuozzo.com> 1458249452 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1458252574 -0700

mm: memcontrol: make tree_{stat,events} fetch all stats

Currently, tree_{stat,events} helpers can only get one stat index at a
time, so when there are a lot of stats to be reported one has to call it
over and over again (see memory_stat_show).  This is neither effective,
nor does it look good.  Instead, let's make these helpers take a
snapshot of all available counters.

Signed-off-by: Vladimir Davydov <vdavydov@virtuozzo.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>