Re: [RFC PATCH 18/19] cpufreq: remove transition_lock

From: Peter Zijlstra
Date: Wed Jan 20 2016 - 17:38:22 EST

On Wed, Jan 20, 2016 at 11:12:45PM +0100, Rafael J. Wysocki wrote:
> > I would dangle _everything_ off the one driver pointer, that's much
> > easier.
> I'm not sure how much easier it is in practice.
> Even if everything dangles out of the driver pointer, data structures
> pointed to by those things need not be allocated all in one go by the
> same entity. Some of them are allocated by drivers, some of them by
> the core, at different times.

Yes, I've noticed, some of that is really bonkers.

> The ordering between those allocations
> and populating the pointers is what matters, not how all that is laid
> out in memory.

I'm thinking getting that ordering right is easier/more natural, if its
all contained in one object. But this could be subjective.