Paul E. McKenney 28728dd310 rcu: Make expedited RCU-sched grace period immediately detect idle ...

Currently, sync_sched_exp_handler() will force a reschedule unless
this CPU has already checked in or unless a reschedule has already
been called for.  This is clearly wasteful if sync_sched_exp_handler()
interrupted an idle CPU, so this commit immediately reports the
quiescent state in that case.

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

2016-03-31 13:34:03 -07:00

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