rcu: Make large and small sysidle systems use same state machine
Currently, small systems move back into RCU_SYSIDLE_NOT from RCU_SYSIDLE_SHORT and large systems do not. This works because moving aggressively to RCU_SYSIDLE_NOT affects only performance, not correctness, and on small systems, the performance impact should be negligible. That said, this difference does make RCU a bit more complex, and RCU does not seem to be suffering from any lack of complexity. This commit therefore adjusts small-system operation to match that of large systems, so that the state never moves back to RCU_SYSIDLE_NOT from RCU_SYSIDLE_SHORT. Reported-by: NFrederic Weisbecker <fweisbec@gmail.com> Signed-off-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: NJosh Triplett <josh@joshtriplett.org>
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