rcu: Renamings to increase RCU clarity

Make RCU-sched, RCU-bh, and RCU-preempt be underlying
implementations, with "RCU" defined in terms of one of the
three.  Update the outdated rcu_qsctr_inc() names, as these
functions no longer increment anything.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: akpm@linux-foundation.org
Cc: mathieu.desnoyers@polymtl.ca
Cc: josht@linux.vnet.ibm.com
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
LKML-Reference: <12509746132696-git-send-email->
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 4 insertions, 4 deletions

diff --git a/kernel/rcupreempt.c b/kernel/rcupreempt.c
index 510898a7bd69..7d777c9f394c 100644
--- a/kernel/rcupreempt.c
+++ b/kernel/rcupreempt.c
@@ -159,7 +159,7 @@ static DEFINE_PER_CPU_SHARED_ALIGNED(struct rcu_dyntick_sched, rcu_dyntick_sched
         .dynticks = 1,
 };
 
-void rcu_qsctr_inc(int cpu)
+void rcu_sched_qs(int cpu)
 {
         struct rcu_dyntick_sched *rdssp = &per_cpu(rcu_dyntick_sched, cpu);
 
@@ -967,12 +967,12 @@ void rcu_check_callbacks(int cpu, int user)
          * If this CPU took its interrupt from user mode or from the
          * idle loop, and this is not a nested interrupt, then
          * this CPU has to have exited all prior preept-disable
-         * sections of code.  So increment the counter to note this.
+         * sections of code.  So invoke rcu_sched_qs() to note this.
          *
          * The memory barrier is needed to handle the case where
          * writes from a preempt-disable section of code get reordered
          * into schedule() by this CPU's write buffer.  So the memory
-         * barrier makes sure that the rcu_qsctr_inc() is seen by other
+         * barrier makes sure that the rcu_sched_qs() is seen by other
          * CPUs to happen after any such write.
          */
 
@@ -980,7 +980,7 @@ void rcu_check_callbacks(int cpu, int user)
             (idle_cpu(cpu) && !in_softirq() &&
              hardirq_count() <= (1 << HARDIRQ_SHIFT))) {
                 smp_mb();       /* Guard against aggressive schedule(). */
-                rcu_qsctr_inc(cpu);
+                rcu_sched_qs(cpu);
         }
 
         rcu_check_mb(cpu);