Timeout Based User-space Low Memory Killer Daemon

Hi,

I would like to announce the first public version of my timeout based
user-space low memory killer daemon (tbulmkd).  It is based on idea
that user-space applications can be divided into two classes,
foreground and background ones.  Foreground processes are visible in
graphical user interface (GUI) and therefore shouldn't be terminated
first when memory usage gets too high.  OTOH background processes are
no longer visible in GUI and are pro-actively being killed to keep
overall memory usage smaller.  Actual daemon implementation is heavily
based on the user-space low memory killer daemon (ulmkd) from Anton
Vorontsov (http://thread.gmane.org/gmane.linux.kernel.mm/84302).

The program is available at:

	https://github.com/bzolnier/tbulmkd

kernel/add-tbulmkd-entries.patch needs to be applied to the kernel
that would be used with tbulmkd.  It adds /proc/$pid/activity and
/proc/$pid/activity_time files.  Write '0' to activity file to mark
the process as background one and '1' (the default value) to mark
it as foreground one.  Please note that this interface is just for
a demonstration of tbulmkd functionality and will be changed in
the future.

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung Poland R&D Center

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