Messages in this thread | | | From | Johannes Weiner <> | Subject | [patch 0/3] mm: memcontrol: eliminate charge reparenting | Date | Sat, 20 Sep 2014 16:00:32 -0400 |
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Hi,
we've come a looong way when it comes to the basic cgroups model, and the recent changes there open up a lot of opportunity to make drastic simplifications to memory cgroups as well.
The decoupling of css from the user-visible cgroup, word-sized per-cpu css reference counters, and css iterators that include offlined groups means we can take per-charge css references, continue to reclaim from offlined groups, and so get rid of the error-prone charge reparenting.
Combined with the higher-order reclaim fixes, lockless page counters, and memcg iterator simplification I sent on Friday, the memory cgroup core code is finally no longer the biggest file in mm/. Yay!
These patches are based on mmotm + the above-mentioned changes + Tj's percpu-refcount conversion to atomic_long_t.
Thanks!
include/linux/cgroup.h | 26 +++ include/linux/percpu-refcount.h | 43 ++++- mm/memcontrol.c | 337 ++------------------------------------ 3 files changed, 75 insertions(+), 331 deletions(-)
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