Re: [PATCH v6 00/19] The new cgroup slab memory controller

Mike Rapoport
2020-06-18T09:27:19Z

Hi Roman,

On Mon, Jun 08, 2020 at 04:06:35PM -0700, Roman Gushchin wrote:
> This is v6 of the slab cgroup controller rework.
>
> The patchset moves the accounting from the page level to the object
> level. It allows to share slab pages between memory cgroups.
> This leads to a significant win in the slab utilization (up to 45%)
> and the corresponding drop in the total kernel memory footprint.
> The reduced number of unmovable slab pages should also have a positive
> effect on the memory fragmentation.

...

> Johannes Weiner (1):
> mm: memcontrol: decouple reference counting from page accounting
>
> Roman Gushchin (18):
> mm: memcg: factor out memcg- and lruvec-level changes out of __mod_lruvec_state()
> mm: memcg: prepare for byte-sized vmstat items
> mm: memcg: convert vmstat slab counters to bytes
> mm: slub: implement SLUB version of obj_to_index()
> mm: memcg/slab: obj_cgroup API
> mm: memcg/slab: allocate obj_cgroups for non-root slab pages
> mm: memcg/slab: save obj_cgroup for non-root slab objects
> mm: memcg/slab: charge individual slab objects instead of pages
> mm: memcg/slab: deprecate memory.kmem.slabinfo
> mm: memcg/slab: move memcg_kmem_bypass() to memcontrol.h
> mm: memcg/slab: use a single set of kmem_caches for all accounted allocations
> mm: memcg/slab: simplify memcg cache creation
> mm: memcg/slab: remove memcg_kmem_get_cache()
> mm: memcg/slab: deprecate slab_root_caches
> mm: memcg/slab: remove redundant check in memcg_accumulate_slabinfo()
> mm: memcg/slab: use a single set of kmem_caches for all allocations
> kselftests: cgroup: add kernel memory accounting tests
> tools/cgroup: add memcg_slabinfo.py tool

Sorry for jumping late, but I'm really missing

Documentation/vm/cgroup-slab.rst | < lots of + >

in this series ;-)

> drivers/base/node.c | 6 +-
> fs/proc/meminfo.c | 4 +-
> include/linux/memcontrol.h | 85 ++-
> include/linux/mm_types.h | 5 +-
> include/linux/mmzone.h | 24 +-
> include/linux/slab.h | 5 -
> include/linux/slab_def.h | 9 +-
> include/linux/slub_def.h | 31 +-
> include/linux/vmstat.h | 14 +-
> kernel/power/snapshot.c | 2 +-
> mm/memcontrol.c | 608 +++++++++++--------
> mm/oom_kill.c | 2 +-
> mm/page_alloc.c | 8 +-
> mm/slab.c | 70 +--
> mm/slab.h | 372 +++++-------
> mm/slab_common.c | 643 +--------------------
> mm/slob.c | 12 +-
> mm/slub.c | 229 +-------
> mm/vmscan.c | 3 +-
> mm/vmstat.c | 30 +-
> mm/workingset.c | 6 +-
> tools/cgroup/memcg_slabinfo.py | 226 ++++++++
> tools/testing/selftests/cgroup/.gitignore | 1 +
> tools/testing/selftests/cgroup/Makefile | 2 +
> tools/testing/selftests/cgroup/test_kmem.c | 382 ++++++++++++
> 25 files changed, 1374 insertions(+), 1405 deletions(-)
> create mode 100755 tools/cgroup/memcg_slabinfo.py
> create mode 100644 tools/testing/selftests/cgroup/test_kmem.c
>
> --
> 2.25.4
>
>

--
Sincerely yours,
Mike.