rcu: Make RCU_FAST_NO_HZ use timer rather than hrtimer

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The RCU_FAST_NO_HZ facility uses an hrtimer to wake up a CPU when
it is allowed to go into dyntick-idle mode, which is almost always
cancelled soon after.  This is not what hrtimers are good at, so
this commit switches to the timer wheel.

Reported-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

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Paul E. McKenney 2012-02-23 17:13:19 -08:00 • committed by Paul E. McKenney

parent 2fdbb31b66

commit 2ee3dc8066

1 changed files with 12 additions and 28 deletions

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kernel/rcutree_plugin.h

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