> I'm guessing (haven't rechecked source) that the cpu_idle() call comes
> about because the top level pgd of a process gets freed very late in
> its exit, and after a great flurry of processes have just exited,
> perhaps there was nothing to free up the accumulation. Though
> it still strikes me as an odd place to do it.
I always found it odd and probably the wrong place too.
-Andi
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