Re: [PATCH 0/8] Suspend block api (version 7)

From: Kevin Hilman
Date: Mon May 17 2010 - 18:17:00 EST

"Rafael J. Wysocki" <rjw@xxxxxxx> writes:

> On Monday 17 May 2010, Arve Hjønnevåg wrote:

>> How about:
>> PM: Add opportunistic suspend support.
> "PM: Opportunistic suspend support" would be sufficient IMO.
> Now, I'd start with the motivation. Like "Power management features present
> in the current mainline kernel are insufficient to get maximum possible energy
> savings on some platforms, such as Android, because ..." (here go explanations
> why this is the case in your opinion).

Yes, this will be helpful.

> Next, "To allow Android and similar platforms to save more energy than they
> currently can save using the mainline kernel, introduce a mechanism by which
> the system is automatically suspended (i.e. put into a system-wide sleep state)
> whenever it's not doing useful work, called opportunistic suspend".

Hopefully, a definition of "useful" will be given here, including by
what standards on-going work is determined not to be useful.

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