Paul E. McKenney f92c734f02 rcu: Prevent rcu_barrier() from starting needless grace periods ... Currently rcu_barrier() uses call_rcu() to enqueue new callbacks on each CPU with a non-empty callback list. This works, but means that rcu_barrier() forces grace periods that are not otherwise needed. The key point is that rcu_barrier() never needs to wait for a grace period, but instead only for all pre-existing callbacks to be invoked. This means that rcu_barrier()'s new callbacks should be placed in the callback-list segment containing the last pre-existing callback. This commit makes this change using the new rcu_segcblist_entrain() function. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>		2017-06-08 08:25:22 -07:00
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events	rcu: Prevent rcu_barrier() from starting needless grace periods	2017-06-08 08:25:22 -07:00
define_trace.h	tracing: Introduce TRACE_EVENT_FN_COND macro	2015-12-23 14:27:21 -05:00
perf.h	tracing: Use outer () on __get_str() definition	2016-07-15 15:50:58 -04:00
syscall.h	tracing: Rename ftrace_event_{call,class} to trace_event_{call,class}	2015-05-13 14:06:10 -04:00
trace_events.h	tracing: add __print_flags_u64()	2017-02-22 16:41:26 -08:00