* Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote: > [...] > > And those two things go together. The /sys/power/state thing is a global > suspend - which I don't think is appropriate for a opportunistic thing in > the first place, especially for multi-core. > > A well-designed opportunistic suspend should be a two-phase thing: an > opportunistc CPU hotunplug (shutting down cores one by one as the system is > idle), and not a "global" event in the first place. And only when you've > reached single-core state should you then say "do I suspend the system too". Shutting a core down would be a natural idle level, and when the last one goes idle we can do the suspend. (it happens as part of suspend anyway) So on systems that dont want to auto-suspend this would indeed behave like you suggest: the final core left would run as UP in essence. Ingo _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
