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>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Valentin Schneider <Valentin.Schneider@arm.com>,
Peter Zijlstra <peterz@infradead.org>,
Uladzislau Rezki <urezki@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
Valentin Schneider <valentin.schneider@arm.com>,
Boqun Feng <boqun.feng@gmail.com>,
Neeraj Upadhyay <neeraju@codeaurora.org>,
Josh Triplett <josh@joshtriplett.org>,
Joel Fernandes <joel@joelfernandes.org>
Subject: [PATCH 00/10] rcu: Make rcu_core() safe in PREEMPT_RT with NOCB + a few other fixes v3
Date: Tue, 19 Oct 2021 02:08:06 +0200 [thread overview]
Message-ID: <20211019000816.455375-1-frederic@kernel.org> (raw)
Changes since v2:
_ Drop first patch (got applied by Paul)
_ Fix unwanted rcu_core() hanging around after setting a CPU as nocb
on boot. This resulted in terrible rcu_barrier() misordering.
I simply forgot to clear SEGCBLIST_RCU_CORE on nocb CPUs on boot.
git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git
rcu/rt-v3
HEAD: 7610a2ba5eaca8caf977ed45bad251ac693feefa
Thanks,
Frederic
---
Frederic Weisbecker (9):
rcu/nocb: Prepare state machine for a new step
rcu/nocb: Invoke rcu_core() at the start of deoffloading
rcu/nocb: Make rcu_core() callbacks acceleration (de-)offloading safe
rcu/nocb: Check a stable offloaded state to manipulate qlen_last_fqs_check
rcu/nocb: Use appropriate rcu_nocb_lock_irqsave()
rcu/nocb: Limit number of softirq callbacks only on softirq
rcu: Fix callbacks processing time limit retaining cond_resched()
rcu: Apply callbacks processing time limit only on softirq
rcu/nocb: Don't invoke local rcu core on callback overload from nocb kthread
Thomas Gleixner (1):
rcu/nocb: Make rcu_core() callbacks acceleration preempt-safe
include/linux/rcu_segcblist.h | 51 ++++++++++++++++++-------
kernel/rcu/rcu_segcblist.c | 10 ++---
kernel/rcu/rcu_segcblist.h | 12 +++---
kernel/rcu/tree.c | 87 +++++++++++++++++++++++++++++--------------
kernel/rcu/tree_nocb.h | 33 ++++++++++++----
5 files changed, 133 insertions(+), 60 deletions(-)
next reply other threads:[~2021-10-19 0:08 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-19 0:08 Frederic Weisbecker [this message]
2021-10-19 0:08 ` [PATCH 01/10] rcu/nocb: Prepare state machine for a new step Frederic Weisbecker
2021-10-19 0:08 ` [PATCH 02/10] rcu/nocb: Invoke rcu_core() at the start of deoffloading Frederic Weisbecker
2021-10-19 0:08 ` [PATCH 03/10] rcu/nocb: Make rcu_core() callbacks acceleration preempt-safe Frederic Weisbecker
2021-10-19 0:08 ` [PATCH 04/10] rcu/nocb: Make rcu_core() callbacks acceleration (de-)offloading safe Frederic Weisbecker
2021-10-19 0:08 ` [PATCH 05/10] rcu/nocb: Check a stable offloaded state to manipulate qlen_last_fqs_check Frederic Weisbecker
2021-10-19 0:08 ` [PATCH 06/10] rcu/nocb: Use appropriate rcu_nocb_lock_irqsave() Frederic Weisbecker
2021-10-19 0:08 ` [PATCH 07/10] rcu/nocb: Limit number of softirq callbacks only on softirq Frederic Weisbecker
2021-10-19 0:08 ` [PATCH 08/10] rcu: Fix callbacks processing time limit retaining cond_resched() Frederic Weisbecker
2021-10-19 0:08 ` [PATCH 09/10] rcu: Apply callbacks processing time limit only on softirq Frederic Weisbecker
2021-10-19 0:08 ` [PATCH 10/10] rcu/nocb: Don't invoke local rcu core on callback overload from nocb kthread Frederic Weisbecker
2021-10-19 0:16 ` [PATCH 00/10] rcu: Make rcu_core() safe in PREEMPT_RT with NOCB + a few other fixes v3 Paul E. McKenney
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