Hi! > > Because I don't consider whether there was bm_activity the last ms, I only > > consider the average, it seems to happen that I try to trigger > > C3/C4 when there is just something copied and some bm active ?!? > > I don't think that this is perfect behaviour: if the system is idle, and > there is _currently_ bus master activity, the CPU should be put into C1 or > C2 type sleep. If you select C3 and actually enter it, you're risking > DMA issues, AFAICS. What kinds of DMA issues? Waiting 32msec or so is only heuristic; it can go wrong any time. It would be really bad if it corrupted data or something like that. Pavel -- Boycott Kodak -- for their patent abuse against Java. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] 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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