[PATCH 1/4] arm64: topology: Implement basic CPU topology support

[Mark Brown]

On Wed, Feb 12, 2014 at 10:27:16AM +0000, Catalin Marinas wrote:
> On Wed, Feb 12, 2014 at 08:04:54AM +0000, Vincent Guittot wrote:

> > The fields will be used to construct topology so we must ensure their
> > visibility

> I wonder whether you need spinlocks around the topology updating code.

It certainly feels a lot safer to have them; if we can't convince
ourselves that the code is safe without them then there's very little
cost in having them so we may as well err on the side of doing that -
does that seem reasonable?
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