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    SubjectRe: [RFC v3 0/3] vmpressure_fd: Linux VM pressure notifications
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    Hi Anton,

    On Wed, Nov 7, 2012 at 12:53 PM, Anton Vorontsov
    <anton.vorontsov@linaro.org> wrote:
    > This is the third RFC. As suggested by Minchan Kim, the API is much
    > simplified now (comparing to vmevent_fd):
    >
    > - As well as Minchan, KOSAKI Motohiro didn't like the timers, so the
    > timers are gone now;
    > - Pekka Enberg didn't like the complex attributes matching code, and
    > so it is no longer there;
    > - Nobody liked the raw vmstat attributes, and so they were eliminated
    > too.

    I love the API and implementation simplifications but I hate the new
    ABI. It's a specialized, single-purpose syscall and bunch of procfs
    tunables and I don't see how it's 'extensible' to anything but VM

    If people object to vmevent_fd() system call, we should consider using
    something more generic like perf_event_open() instead of inventing our
    own special purpose ABI.

    Pekka


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