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Date: Fri, 13 May 2011 08:39:42 +0200 From: Raffaele Recalcati <lamiaposta71@...il.com> To: "Rafael J. Wysocki" <rjw@...k.pl> Cc: linux-pm@...ts.linux-foundation.org, davinci-linux-open-source@...ux.davincidsp.com, linux-kernel@...r.kernel.org Subject: Re: pm loss development Hi Rafael, 2011/5/12 Rafael J. Wysocki <rjw@...k.pl>: > 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? Take a quick look at Documentation/power/loss.txt paragrpah "2.4 Power loss policies". You can decide what can be powered off. Thanks, Raffaele -- www.opensurf.it -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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