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 [thread overview]
Message-ID: <20230329160203.191380-1-frederic@kernel.org> (raw)
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
next reply other threads:[~2023-03-29 16:04 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-29 16:01 Frederic Weisbecker [this message]
2023-03-29 16:02 ` [PATCH 1/4] rcu/nocb: Protect lazy shrinker against concurrent (de-)offloading Frederic Weisbecker
2023-03-29 20:44 ` Paul E. McKenney
2023-03-29 21:18 ` Frederic Weisbecker
2023-03-29 16:02 ` [PATCH 2/4] rcu/nocb: Fix shrinker race against callback enqueuer Frederic Weisbecker
2023-03-29 20:47 ` Paul E. McKenney
2023-03-29 16:02 ` [PATCH 3/4] rcu/nocb: Recheck lazy callbacks under the ->nocb_lock from shrinker Frederic Weisbecker
2023-03-29 20:54 ` Paul E. McKenney
2023-03-29 21:22 ` Frederic Weisbecker
2023-03-29 21:38 ` Paul E. McKenney
2023-03-29 16:02 ` [PATCH 4/4] rcu/nocb: Make shrinker to iterate only NOCB CPUs Frederic Weisbecker
2023-03-29 20:58 ` Paul E. McKenney
2023-03-29 21:35 ` Frederic Weisbecker
2023-03-29 23:12 ` Paul E. McKenney
2023-04-24 17:35 ` [PATCH 0/4 v2] rcu/nocb: Shrinker related boring fixes Paul E. McKenney
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