[tip: core/rcu] doc: Remove obsolete rcutree.rcu_idle_lazy_gp_delay boot parameter

[tip-bot2 for Paul E. McKenney]

The following commit has been merged into the core/rcu branch of tip:

Commit-ID:     2252ec1464730ce718dc8087c13a419b9aa58758
Gitweb:        https://git.kernel.org/tip/2252ec1464730ce718dc8087c13a419b9aa58758
Author:        Paul E. McKenney <paulmck@xxxxxxxxxx>
AuthorDate:    Thu, 10 Dec 2020 09:53:50 -08:00
Committer:     Paul E. McKenney <paulmck@xxxxxxxxxx>
CommitterDate: Mon, 04 Jan 2021 13:35:15 -08:00

doc: Remove obsolete rcutree.rcu_idle_lazy_gp_delay boot parameter

This commit removes documentation for the rcutree.rcu_idle_lazy_gp_delay
kernel boot parameter given that this parameter no longer exists.

Fixes: 77a40f97030b ("rcu: Remove kfree_rcu() special casing and lazy-callback handling")
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx>
---
 Documentation/admin-guide/kernel-parameters.txt | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index c722ec1..b5baa8a 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -4179,12 +4179,6 @@
 			Set wakeup interval for idle CPUs that have
 			RCU callbacks (RCU_FAST_NO_HZ=y).
 
-	rcutree.rcu_idle_lazy_gp_delay= [KNL]
-			Set wakeup interval for idle CPUs that have
-			only "lazy" RCU callbacks (RCU_FAST_NO_HZ=y).
-			Lazy RCU callbacks are those which RCU can
-			prove do nothing more than free memory.
-
 	rcutree.rcu_kick_kthreads= [KNL]
 			Cause the grace-period kthread to get an extra
 			wake_up() if it sleeps three times longer than