tree 806ccc28f7cc1f87cc05e1cac891a3f135c9b555
parent 6bb3bb50e70dfb4b8d2f1a42bf9972b4b525b7d8
author Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1426024409 -0700
committer Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1426105747 -0700

rcu: Correctly initialize ->rcu_qs_ctr_snap at online time

The rcu_data structure's ->rcu_qs_ctr_snap field is initialized at
CPU-online time from the current CPU's element of the per-CPU rcu_qs_ctr
variable.  Unfortunately, this is at CPU_UP_PREPARE time, so has nothing
to do with the CPU being onlined.  This commit therefore initializes
this variable from the incoming CPU's element of rcu_qs_ctr.

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