tree 0845fff0ca580e0394746e6545b9f038bc4b8a44
parent 52db30ab23b6d00cf80b22a510c4ea4be4458031
author Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1406583565 -0700
committer Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1410132447 -0700

rcu: Improve RCU-tasks energy efficiency

The current RCU-tasks implementation uses strict polling to detect
callback arrivals.  This works quite well, but is not so good for
energy efficiency.  This commit therefore replaces the strict polling
with a wait queue.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>