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    Subject[PATCH 0/2] Mempressure cgroup
    Hi all,

    Here is another round of the mempressure cgroup. This time I dared to
    remove the RFC tag. :)

    In this revision:

    - Addressed most of Kirill Shutemov's comments. I didn't bother
    implementing per-level lists, though. It would needlessly complicate the
    logic, and the gain would be only visible with lots of watchers (which
    we don't have for our use-cases). But it is always an option to add the

    - I've split the pach into two: 'shrinker' and 'levels' parts. While the
    full-fledged userland shrinker is an interesting idea, we don't have any
    users ready for it, so I won't advocate for it too much.

    And since at least Kirill has some concerns about it, I don't want the
    shrinker to block the pressure levels.

    So, these are now separate. At some point, I'd like to both of them
    merged, but if anything, let's discuss them separately;

    - Rebased onto v3.8-rc2.

    RFC v2 (

    - Added documentation, describes APIs and the purpose;
    - Implemented shrinker interface, this is based on Andrew's idea and
    supersedes my "balance" level idea;
    - The shrinker interface comes with a stress-test utility, that is what
    Andrew was also asking for. A simple app that we can run and see if the
    thing works as expected;
    - Added reclaimer's target_mem_cgroup handling;
    - As promised, added support for multiple listeners, and fixed some other
    comments on the previous RFC.

    RFC v1 (

    Documentation/cgroups/mempressure.txt | 97 +++++
    Documentation/cgroups/mempressure_test.c | 213 ++++++++++
    include/linux/cgroup_subsys.h | 6 +
    include/linux/vmstat.h | 11 +
    init/Kconfig | 13 +
    mm/Makefile | 1 +
    mm/mempressure.c | 487 +++++++++++++++++++++++
    mm/vmscan.c | 4 +
    8 files changed, 832 insertions(+)

     \ /
      Last update: 2013-01-04 10:21    [W:0.023 / U:48.492 seconds]
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