From e2c73a6860bdf54f2c6bf8cddc34ddc91a1343e1 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Mon, 27 Sep 2021 14:18:51 -0700 Subject: 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 --- tools/testing/selftests/rcutorture/configs/rcu/TREE04 | 1 - 1 file changed, 1 deletion(-) (limited to 'tools/testing/selftests/rcutorture/configs/rcu/TREE04') diff --git a/tools/testing/selftests/rcutorture/configs/rcu/TREE04 b/tools/testing/selftests/rcutorture/configs/rcu/TREE04 index f6d6a40c0576..22ad0261728d 100644 --- a/tools/testing/selftests/rcutorture/configs/rcu/TREE04 +++ b/tools/testing/selftests/rcutorture/configs/rcu/TREE04 @@ -7,7 +7,6 @@ CONFIG_PREEMPT=n CONFIG_HZ_PERIODIC=n CONFIG_NO_HZ_IDLE=n CONFIG_NO_HZ_FULL=y -CONFIG_RCU_FAST_NO_HZ=y CONFIG_RCU_TRACE=y CONFIG_RCU_FANOUT=4 CONFIG_RCU_FANOUT_LEAF=3 -- cgit v1.2.3-59-g8ed1b