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Subject[patch 0/3] vmstat: Various enhancements
This addresses a couple of issues that came up last week in
the discussion about issues related to the blocking of
the execution of vmstat updates.

1. It makes vmstat updates execution deferrable again so that
no special tick is generated for vmstat execution. vmstat
is quieted down when a processor enters idle mode. This
means that no differentials exist anymore when a processor
is in idle mode.

2. Create a separate workqueue so that the vmstat updater
is not blocked by other work requeusts. This creates a
new kernel thread <sigh> and avoids the issue of
differentials not folded in a timely fashion.



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