rcu: Move RCU grace-period cleanup into kthread

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As a first step towards allowing grace-period cleanup to be preemptible,
this commit moves the RCU grace-period cleanup into the same kthread
that is now used to initialize grace periods.  This is needed to keep
scheduling latency down to a dull roar.

[ paulmck: Get rid of stray spin_lock_irqsave() calls. ]

Reported-by: Mike Galbraith <mgalbraith@suse.de>
Reported-by: Dimitri Sivanich <sivanich@sgi.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>

...

This commit is contained in:

Paul E. McKenney 2012-06-20 17:07:14 -07:00

parent 755609a908

commit cabc49c1ff

1 changed files with 62 additions and 50 deletions

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112

kernel/rcutree.c

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