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    SubjectRe: A desktop environment[1] kernel wishlist
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    On Tue, Oct 21, 2014 at 7:14 PM, Bastien Nocera <hadess@hadess.net> wrote:
    >> As for: 'Export of "wake reason" when the system wakes up (rtc alarm,
    >> lid open, etc.) and wakealarm (/sys/class/rtc/foo/wakealarm)
    >> documentation'
    >>
    >> Can you expand more on the rational for the need here? Is this for UI
    >> for power debugging, or something else?
    >
    > No, it would be used for automating backups, or implementing
    > suspend->hibernation transitions. For example, right before the machine
    > suspends, I would schedule it to wake up in a hour. If I get woken up by
    > the rtc alarm (and not by the user through a lid open), I might:
    > - check that I'm plugged into the AC, it's night, and in the vicinity of
    > the server that handles my backups and so backup the system.
    > - check whether the battery is low, and hibernate the machine (if it
    > supports it, obviously).

    Isn't this already available through /sys/kernel/debug/wakeup_sources
    and/or the various power/wake* files in sysfs?

    Gr{oetje,eeting}s,

    Geert

    --
    Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

    In personal conversations with technical people, I call myself a hacker. But
    when I'm talking to journalists I just say "programmer" or something like that.
    -- Linus Torvalds


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