On Mon, Aug 20, 2012 at 10:06:06AM +0200, Ingo Molnar wrote: > If the answer is 'yes' then there's clear cases where the kernel > (should) automatically know the events where we switch from > balancing for performance to balancing for power:
No. We can't identify all of these cases and we can't identify corner cases. Putting this kind of policy in the kernel is an awful idea. It should never be altering policy itself, because it'll get it wrong and people will file bugs complaining that it got it wrong and the biggest case where you *need* to be able to handle switching between performance and power optimisations (your rack management unit just told you that you're going to have to drop power consumption by 20W) is one where the kernel doesn't have all the information it needs to do this. So why bother at all? -- Matthew Garrett | mj...@srcf.ucam.org -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
