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Paul E. McKenney e2c73a6860 rcu: Remove the RCU_FAST_NO_HZ Kconfig option 
All of the uses of CONFIG_RCU_FAST_NO_HZ=y that I have seen involve
systems with RCU callbacks offloaded.  In this situation, all that this
Kconfig option does is slow down idle entry/exit with an additional
allways-taken early exit.  If this is the only use case, then this
Kconfig option nothing but an attractive nuisance that needs to go away.

This commit therefore removes the RCU_FAST_NO_HZ Kconfig option.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2021-11-30 17:24:47 -08:00
..
initrd.txt torture: Update initrd documentation 2020-08-24 18:45:33 -07:00
rcu-test-image.txt torture: Update initrd documentation 2020-08-24 18:45:33 -07:00
TINY_RCU.txt rcu: Remove nohz_full full-system-idle state machine 2017-06-08 18:52:39 -07:00
TREE_RCU-kconfig.txt rcu: Remove the RCU_FAST_NO_HZ Kconfig option 2021-11-30 17:24:47 -08:00