rcu: Rename "quiet" functions

rcu: Rename "quiet" functions

The number of "quiet" functions has grown recently, and the
names are no longer very descriptive.  The point of all of these
functions is to do some portion of the task of reporting a
quiescent state, so rename them accordingly:

o	cpu_quiet() becomes rcu_report_qs_rdp(), which reports a
	quiescent state to the per-CPU rcu_data structure.  If this
	turns out to be a new quiescent state for this grace period,
	then rcu_report_qs_rnp() will be invoked to propagate the
	quiescent state up the rcu_node hierarchy.

o	cpu_quiet_msk() becomes rcu_report_qs_rnp(), which reports
	a quiescent state for a given CPU (or possibly a set of CPUs)
	up the rcu_node hierarchy.

o	cpu_quiet_msk_finish() becomes rcu_report_qs_rsp(), which
	reports a full set of quiescent states to the global rcu_state
	structure.

o	task_quiet() becomes rcu_report_unblock_qs_rnp(), which reports
	a quiescent state due to a task exiting an RCU read-side critical
	section that had previously blocked in that same critical section.
	As indicated by the new name, this type of quiescent state is
	reported up the rcu_node hierarchy (using rcu_report_qs_rnp()
	to do so).

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Josh Triplett <josh@joshtriplett.org>
Acked-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: dipankar@in.ibm.com
Cc: mathieu.desnoyers@polymtl.ca
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
Cc: Valdis.Kletnieks@vt.edu
Cc: dhowells@redhat.com
LKML-Reference: <12597846163698-git-send-email->
Signed-off-by: Ingo Molnar <mingo@elte.hu>