linux-kernel - [PATCH 4/4] RCU: update documentation regarding kthread

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Date:   Tue, 11 Jan 2022 15:32:53 -0800
From:   Alison Chaiken <achaiken@...ora.tech>
To:     tglx@...utronix.de
Cc:     peterz@...radead.org, paulmck@...nel.org,
        valentin.schneider@....com, frederic@...nel.org,
        linux-kernel@...r.kernel.org, glenn@...ora.tech,
        alison@...-devel.com, Alison Chaiken <achaiken@...ora.tech>
Subject: [PATCH 4/4] RCU: update documentation regarding kthread_prio cmdline parameter

Inform readers that the priority of RCU no-callback threads will also
be boosted.

Signed-off-by: Alison Chaiken <achaiken@...ora.tech>
---
 Documentation/admin-guide/kernel-parameters.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 1396fd2d9031..b844978e1bdf 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -4439,6 +4439,8 @@
 			(the least-favored priority).  Otherwise, when
 			RCU_BOOST is not set, valid values are 0-99 and
 			the default is zero (non-realtime operation).
+			When RCU_NOCB_CPU is set, also adjust the
+			priority of NOCB callback kthreads.
 
 	rcutree.rcu_nocb_gp_stride= [KNL]
 			Set the number of NOCB callback kthreads in
-- 
2.32.0