From: Frederic Weisbecker <frederic@kernel.org>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Frederic Weisbecker <frederic@kernel.org>,
Boqun Feng <boqun.feng@gmail.com>,
Joel Fernandes <joel@joelfernandes.org>,
Neeraj Upadhyay <neeraj.upadhyay@amd.com>,
Uladzislau Rezki <urezki@gmail.com>,
Zqiang <qiang.zhang1211@gmail.com>, rcu <rcu@vger.kernel.org>,
"Paul E . McKenney" <paulmck@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Peter Zijlstra <peterz@infradead.org>
Subject: [PATCH 0/3] timers & RCU: Fix TREE03 stalls
Date: Tue, 19 Dec 2023 00:19:13 +0100 [thread overview]
Message-ID: <20231218231916.11719-1-frederic@kernel.org> (raw)
5c0930ccaad5 ("hrtimers: Push pending hrtimers away from outgoing CPU earlier")
has introduced an issue with RCU. This is a proposal to solve the
situation after realizing that fixing that on the timers side wouldn't
be pretty to say the least.
Oh and the last patch is absolutely irrelevant to the issue...
Frederic Weisbecker (3):
hrtimer: Report offline hrtimer enqueue
rcu: Defer RCU kthreads wakeup when CPU is dying
rcu/exp: Remove full barrier upon main thread wakeup
include/linux/hrtimer.h | 3 ++-
kernel/rcu/tree.c | 34 +++++++++++++++++++++++++++++++++-
kernel/rcu/tree_exp.h | 8 +++-----
kernel/time/hrtimer.c | 3 +++
4 files changed, 41 insertions(+), 7 deletions(-)
--
2.42.1
next reply other threads:[~2023-12-18 23:19 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-18 23:19 Frederic Weisbecker [this message]
2023-12-18 23:19 ` [PATCH 1/3] hrtimer: Report offline hrtimer enqueue Frederic Weisbecker
2023-12-18 23:19 ` [PATCH 2/3] rcu: Defer RCU kthreads wakeup when CPU is dying Frederic Weisbecker
2023-12-19 3:38 ` Joel Fernandes
2023-12-19 11:56 ` Frederic Weisbecker
2023-12-20 3:01 ` Joel Fernandes
2023-12-20 15:50 ` Frederic Weisbecker
2023-12-21 0:57 ` Paul E. McKenney
2023-12-19 4:42 ` Hillf Danton
2023-12-19 23:42 ` Frederic Weisbecker
2023-12-19 15:29 ` Paul E. McKenney
2023-12-19 15:47 ` Frederic Weisbecker
2023-12-20 8:24 ` Z qiang
2023-12-20 15:13 ` Frederic Weisbecker
2024-08-12 9:10 ` Cheng-Jui Wang (王正睿)
2024-08-12 11:13 ` Frederic Weisbecker
2024-08-12 11:53 ` Cheng-Jui Wang (王正睿)
2023-12-18 23:19 ` [PATCH 3/3] rcu/exp: Remove full barrier upon main thread wakeup Frederic Weisbecker
2023-12-19 1:40 ` [PATCH 0/3] timers & RCU: Fix TREE03 stalls Paul E. McKenney
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