linux-kernel - [tip: core/rcu] srcu: Remove superfluous ssp initialization for early callbacks

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Message-ID: <162506087380.395.2450772675330426567.tip-bot2@tip-bot2>
Date:   Wed, 30 Jun 2021 13:47:53 -0000
From:   "tip-bot2 for Frederic Weisbecker" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Frederic Weisbecker <frederic@...nel.org>,
        Boqun Feng <boqun.feng@...il.com>,
        Lai Jiangshan <jiangshanlai@...il.com>,
        Neeraj Upadhyay <neeraju@...eaurora.org>,
        Josh Triplett <josh@...htriplett.org>,
        Joel Fernandes <joel@...lfernandes.org>,
        Uladzislau Rezki <urezki@...il.com>,
        "Paul E. McKenney" <paulmck@...nel.org>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [tip: core/rcu] srcu: Remove superfluous ssp initialization for early
 callbacks

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

Commit-ID:     c75e9d29159b94904d10b23ad6aebdf869b61106
Gitweb:        https://git.kernel.org/tip/c75e9d29159b94904d10b23ad6aebdf869b61106
Author:        Frederic Weisbecker <frederic@...nel.org>
AuthorDate:    Fri, 02 Apr 2021 01:47:02 +02:00
Committer:     Paul E. McKenney <paulmck@...nel.org>
CommitterDate: Mon, 10 May 2021 16:03:34 -07:00

srcu: Remove superfluous ssp initialization for early callbacks

Pre-srcu_init() invocations of call_srcu() initialize the srcu_struct
structure in question, so there is no need to check this initialization
in srcu_init() when initiating grace periods for srcu_struct structures
that had early call_srcu() invocations.  This commit therefore drops
the calls to check_init_srcu_struct() in srcu_init().

Signed-off-by: Frederic Weisbecker <frederic@...nel.org>
Cc: Boqun Feng <boqun.feng@...il.com>
Cc: Lai Jiangshan <jiangshanlai@...il.com>
Cc: Neeraj Upadhyay <neeraju@...eaurora.org>
Cc: Josh Triplett <josh@...htriplett.org>
Cc: Joel Fernandes <joel@...lfernandes.org>
Cc: Uladzislau Rezki <urezki@...il.com>
Signed-off-by: Paul E. McKenney <paulmck@...nel.org>
---
 kernel/rcu/srcutree.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/kernel/rcu/srcutree.c b/kernel/rcu/srcutree.c
index 3414aff..f4f0cbf 100644
--- a/kernel/rcu/srcutree.c
+++ b/kernel/rcu/srcutree.c
@@ -1388,7 +1388,6 @@ void __init srcu_init(void)
 	while (!list_empty(&srcu_boot_list)) {
 		ssp = list_first_entry(&srcu_boot_list, struct srcu_struct,
 				      work.work.entry);
-		check_init_srcu_struct(ssp);
 		list_del_init(&ssp->work.work.entry);
 		queue_work(rcu_gp_wq, &ssp->work.work);
 	}