On Thu, Aug 16, 2012 at 09:37:25PM +0300, Kirill A. Shutemov wrote:

On Thu, Aug 16, 2012 at 08:29:44PM +0200, Andrea Arcangeli wrote:

quoted

On Thu, Aug 16, 2012 at 07:43:56PM +0300, Kirill A. Shutemov wrote:

quoted

Hm.. I think with static_key we can avoid cache overhead here. I'll try.

Could you elaborate on the static_key? Is it some sort of self
modifying code?

Runtime code patching. See Documentation/static-keys.txt. We can patch it
on sysctl.

I guessed it had to be patching the code, thanks for the
pointer. It looks a perfect fit for this one agreed.

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