tree d6fcd186eabf672b7bc54bd2f04f1f7956f8afe1
parent 2fdbb31b662787f78bb78b3e4e18f1a072058ffc
author Paul E. McKenney <paul.mckenney@linaro.org> 1330045999 -0800
committer Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1335326119 -0700

rcu: Make RCU_FAST_NO_HZ use timer rather than hrtimer

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>