commit ce5f4fc861e84739289c187f147040e6af6599b2
author Paul E. McKenney <paulmck@linux.vnet.ibm.com> Mon May 13 10:32:10 2013 -0700
committer Paul E. McKenney <paulmck@linux.vnet.ibm.com> Mon Jun 10 13:42:38 2013 -0700
tree ac365ac7c98ed8dcd67c445c6efff96057fd271b
parent 295fde89be1b7dce874c0f38d8bb78975a25d46e

nohz_full: Document additional restrictions

This commit calls out the potential for slowing the tick even when there
are multiple runnable processes per CPU,  It also points out that current
mainlined version keeps the tick going on at least one CPU even when all
CPUs are otherwise idle.  Finally, it notes the need for a 1-HZ tick in
order to calculate CPU load, maintain sched average, compute CFS entity
vruntime, compute avenrun, and carry out load balancing.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>