[PATCH RFC] clk: add support for automatic parent handling

Thomas Gleixner tglx at linutronix.de
Fri Apr 22 12:14:04 EDT 2011

On Fri, 22 Apr 2011, Thomas Gleixner wrote:
> On Thu, 21 Apr 2011, Colin Cross wrote:
> Yes, and that's exaclty what we don't want to have. You still need a
> global lock for doing the full tree acquisition and the only advantage
> which is left is that you can do parallel prepare/unprepare and
> everything else (parent settings, rate propagations) will need to do
> the locking dance.

And worse with the prepare/unprepare separation you need to do the
lock dance twice in some cases. Once for the mutex and once for the
spinlock. Not really a intriguing idea.




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