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    SubjectRe: [linux-pm] pm loss development
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    Am Donnerstag, 12. Mai 2011, 21:27:44 schrieb Rafael J. Wysocki:
    > On Thursday, May 12, 2011, Raffaele Recalcati wrote:
    > > What happen normally in runtime pm implementation is that every devices
    > > are switched off and are enabled only when needed.
    > > In our case instead we have a completely functional embedded system and,
    > > when an asyncrhonous event appear, we have only some tens milliseconds
    > > before the actual power failure takes place.
    > > This patchset add a support in order to switch off not vital part of the system,
    > > in order to allow the board to survive longer.
    > > This allow the possibility to save important data.
    >
    > OK, so first, who decides what parts of the system are vital and what aren't?

    If you know that power is failing in a few miliseconds, only stuff that can lead to data
    corruption is vital. In that timeframe you can't even flush buffers.

    Regards
    Oliver


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