linux-kernel - [PATCH rcu 08/10] rcu: Update documentation regarding kthread

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Message-Id: <20220204232406.814-8-paulmck@kernel.org>
Date:   Fri,  4 Feb 2022 15:24:04 -0800
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     rcu@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, kernel-team@...com,
        rostedt@...dmis.org, Alison Chaiken <achaiken@...ora.tech>,
        "Paul E . McKenney" <paulmck@...nel.org>
Subject: [PATCH rcu 08/10] rcu: Update documentation regarding kthread_prio cmdline parameter

From: Alison Chaiken <achaiken@...ora.tech>

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

Signed-off-by: Alison Chaiken <achaiken@...ora.tech>
Signed-off-by: Paul E. McKenney <paulmck@...nel.org>
---
 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 f5a27f067db9e..8e2e65122b993 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -4504,6 +4504,8 @@
 			(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
-- 
2.31.1.189.g2e36527f23