Re: [PATCH 0/3] MMC / PM: Make it possible to use PM QoS latency constraints

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On Wednesday, March 07, 2012, Mark Brown wrote:
> On Wed, Mar 07, 2012 at 09:51:07PM +0100, Rafael J. Wysocki wrote:
> 
> > That would be fine, but it doesn't _conflict_ with a more direct (so to
> > speak) knob in sysfs, does it?
> 
> Well, perhaps - one of the issues I remember from last time we discussed
> this was that there's a tension between the embedded space where the
> idea of userspace charging around and playing with low level parameters
> to make things hang together is scary and the PC space where the kernel
> just isn't going to be able to cope with everyone's systems reliably as
> it's got too little information about the hardware.

Definitely, on the PC side we would like user space to have access to
low-level settings.

Anyway, I suggest that we wait a bit until I post updated patches and then
you'll tell me why they are wrong, OK?

Rafael
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