tree 03efa7f9a3f796c88af60a8bf2cc7cdf2885000b
parent b065a85354239cc96295f696eeace67ad3a55e5c
author Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1344632103 -0700
committer Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1348411370 -0700

rcu: Apply for_each_rcu_flavor() to increment_cpu_stall_ticks()

The increment_cpu_stall_ticks() function listed each RCU flavor
explicitly, with an ifdef to handle preemptible RCU.  This commit
therefore applies for_each_rcu_flavor() to save a line of code.

Because this commit switches from a code-based enumeration of the
flavors of RCU to an rcu_state-list-based enumeration, it is no longer
possible to apply __get_cpu_var() to the per-CPU rcu_data structures.
We instead use __this_cpu_var() on the rcu_state structure's ->rda field
that references the corresponding rcu_data structures.

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