tree 0be0f5f7f7d538fcd6ec500b6a2f9380160da3e5
parent 8d742bf54c16f1951809799463bb66942cfc629d
author Eric Dumazet <edumazet@google.com> 1397664384 -0700
committer Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1397845094 -0700

softirq: A single rcu_bh_qs() call per softirq set is enough

Calling rcu_bh_qs() after every softirq action is not really needed.
What RCU needs is at least one rcu_bh_qs() per softirq round to note a
quiescent state was passed for rcu_bh.

Note for Paul and myself : this could be inlined as a single instruction
and avoid smp_processor_id()
(sone this_cpu_write(rcu_bh_data.passed_quiesce, 1))

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