Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Frederic Weisbecker <frederic@kernel.org>
To:     "Paul E . McKenney" <paulmck@kernel.org>
Cc:     LKML <linux-kernel@vger.kernel.org>,
        Frederic Weisbecker <frederic@kernel.org>,
        rcu <rcu@vger.kernel.org>, Uladzislau Rezki <urezki@gmail.com>,
        Neeraj Upadhyay <quic_neeraju@quicinc.com>,
        Boqun Feng <boqun.feng@gmail.com>,
        Joel Fernandes <joel@joelfernandes.org>
Subject: [PATCH 0/4 v2] rcu/nocb: Shrinker related boring fixes
Date:   Wed, 29 Mar 2023 18:01:59 +0200
Message-Id: <20230329160203.191380-1-frederic@kernel.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Changes since v1 (https://lore.kernel.org/lkml/20230322194456.2331527-1-frederic@kernel.org/):

* Use mutex_trylock() to avoid inverted dependency chain against
  allocations.

* WARN if an rdp is part of nocb mask but is not offloaded

Tested through shrinker debugfs interface.

Frederic Weisbecker (4):
  rcu/nocb: Protect lazy shrinker against concurrent (de-)offloading
  rcu/nocb: Fix shrinker race against callback enqueuer
  rcu/nocb: Recheck lazy callbacks under the ->nocb_lock from shrinker
  rcu/nocb: Make shrinker to iterate only NOCB CPUs

 kernel/rcu/tree_nocb.h | 52 ++++++++++++++++++++++++++++++++++++++----
 1 file changed, 47 insertions(+), 5 deletions(-)

-- 
2.34.1