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    Subject[PATCH v2 0/2] vmevent: Greater-than attribute + one-shot mode + a bugfix
    Hi all,

    That's a respin of the previous patchset that tried to add a new
    'cross' event type, which would trigger whenever value crosses a
    user-specified threshold both ways, i.e. from a lesser values side
    to a greater values side, and vice versa.

    We use the event type in an userspace low-memory killer: we get a
    notification when memory becomes low, so we start freeing memory by
    killing unneeded processes, and we get notification when memory hits
    the threshold from another side, so we know that we freed enough of

    There's also a fix for a bug that makes kernel upset about sleeping
    in the atomic context.

    Per Pekka's comments here comes v2. Changes:

    - Added a one-shot mode plus a greater-than attribute, the two
    additions makes the equivalent of the cross-event type.
    - In the bugfix patch I added some comments about implementation
    details of the lock-free logic. Also, in the previous version of
    the fix I forgot to remove 'struct mutex' form the
    'struct vmevent_watch', this is now cleaned up.

    As usual, the patches are against

    git:// vmevent/core


    Anton Vorontsov

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      Last update: 2012-04-18 22:37    [W:0.039 / U:6.616 seconds]
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