Re: [thiscpuops upgrade 10/10] Lockless (and preemptless)fastpaths for slub

[Peter Zijlstra]

On Tue, 2010-11-23 at 17:51 -0600, Christoph Lameter wrote:
> So there is no need even to disable preemption which will make the allocations
> scale well in a RT environment. 

The RT thing isn't particularly about scaling per-se, its mostly about
working at all.

This thing still relies on disabling IRQs in the slow path, which means
its still going to be a lot of work to make it work on -rt.

It also heavily relies on bit-spinlocks, which again is going to need
changes for -rt.

But yes, the lockless fast path is nice, I'll try and get around to
reading it.
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