Messages in this thread | | | Date | Mon, 24 May 2010 20:57:11 +0200 | From | Pavel Machek <> | Subject | Re: [linux-pm] [PATCH 1/8] PM: Add suspend block api. |
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> >> One if the benefit we get from using suspend is that an unprivileged > >> app that does not have access to suspend blockers cannot prevent > >> suspend. You lose this advantage if you trigger suspend only from the > >> idle task. > >> > >> > > If the process (privileged or unprivileged) doesn't want to suspend, why > > not just provide an interface to allow suspend to be turned off at the > > user level. This could block the suspend cycle in itself, and you > > shouldn't need fine grained off/on cycles. If an application really > > needs the system not to suspend then they (the user) should know the > > consequences and power requirements for such a task. > > > > I didn't say it had to be only from the idle task; but, that is the most > > logical place. If the other threads are not idle then they really > > require work and will most likely already have a bock on the suspend anyway. > > > > I think you missed my point. Unprivileged processes should not be > allowed to prevent suspend.
Currently, unpriviledged processes are allowed to eat power, for example while(1). We should keep that behaviour at least by default.
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