Re: [RFC PATCH v3 03/10] PM: Introduce an Energy Model management framework

[Quentin Perret]

On Tuesday 19 Jun 2018 at 16:16:42 (+0200), Peter Zijlstra wrote:
> On Tue, Jun 19, 2018 at 02:38:45PM +0100, Quentin Perret wrote:
> > But maybe I could use something simpler than a lock in this case ?
> > Would WRITE_ONCE/READ_ONCE be enough to ensure that atomicity for
> > example ?
> 
> Yes, since its a single pointer, smp_store_release() + READ_ONCE()
> should be sufficient (these are the foundations of RCU).

OK, good, I'll get rid of the spinlock in v4 (and read more about RCU
foundations then :-))

Thanks,
Quentin