linux-kernel - [PATCH] idle: Remove stale RCU comment

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Date: Mon, 3 Jun 2024 16:30:39 +0100
From: Christian Loehle <christian.loehle@....com>
To: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Cc: Daniel Lezcano <daniel.lezcano@...aro.org>,
 Thomas Gleixner <tglx@...utronix.de>, Peter Zijlstra <peterz@...radead.org>,
 "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
 Ingo Molnar <mingo@...hat.com>, Steven Rostedt <rostedt@...dmis.org>,
 Vincent Guittot <vincent.guittot@...aro.org>
Subject: [PATCH] idle: Remove stale RCU comment

The call of rcu_idle_enter() from within cpuidle_idle_call() was
removed in commit 1098582a0f6c ("sched,idle,rcu: Push rcu_idle deeper
into the idle path") which makes the comment out of place.

Signed-off-by: Christian Loehle <christian.loehle@....com>
---
 kernel/sched/idle.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/kernel/sched/idle.c b/kernel/sched/idle.c
index 6135fbe83d68..3cc1a592d9a1 100644
--- a/kernel/sched/idle.c
+++ b/kernel/sched/idle.c
@@ -179,12 +179,6 @@ static void cpuidle_idle_call(void)
 		return;
 	}

-	/*
-	 * The RCU framework needs to be told that we are entering an idle
-	 * section, so no more rcu read side critical sections and one more
-	 * step to the grace period
-	 */
-
 	if (cpuidle_not_available(drv, dev)) {
 		tick_nohz_idle_stop_tick();

-- 
2.34.1