Linux: Suspend and Hibernation Status Report

“Rafael Wysocki posted a lengthy status report ‘describing the
current state of development of the suspend and hibernation
infrastructure: how it works, what known problems there are in it
and what the future development plans are.’ Regarding future plans,
Rafael noted, ‘the part of the suspend and hibernation code that
should be taken care of first is the handling of devices. Namely, I
think that we should first separate the hibernation-related
handling of devices from the suspend-related handling of them in
order to overcome limitations mentioned in Section IX. This also
will be necessary if we want to try some new approaches to
hibernation, such as the kexec-based one recently discussed on the
LKML.’ He added, ‘the next thing that seems reasonable to do is to
eliminate the freezing of tasks, described in Section VI, from the
suspend and resume code, since the limitations related to it are
regarded by many people as too restrictive…'”

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