[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <63e54cb9-fd08-43c3-9f42-3627198634e8@paulmck-laptop>
Date: Fri, 8 Mar 2024 13:51:29 -0800
From: "Paul E. McKenney" <paulmck@...nel.org>
To: "Uladzislau Rezki (Sony)" <urezki@...il.com>
Cc: RCU <rcu@...r.kernel.org>, Neeraj upadhyay <Neeraj.Upadhyay@....com>,
Boqun Feng <boqun.feng@...il.com>, Hillf Danton <hdanton@...a.com>,
Joel Fernandes <joel@...lfernandes.org>,
LKML <linux-kernel@...r.kernel.org>,
Oleksiy Avramchenko <oleksiy.avramchenko@...y.com>,
Frederic Weisbecker <frederic@...nel.org>
Subject: Re: [PATCH v6 0/6] Reduce synchronize_rcu() latency(v6)
On Fri, Mar 08, 2024 at 06:34:03PM +0100, Uladzislau Rezki (Sony) wrote:
> This is v6. It is based on the Paul's "dev" branch:
>
> HEAD: f1bfe538c7970283040a7188a291aca9f18f0c42
>
> please note, that patches should be applied from scratch,
> i.e. the v5 has to be dropped from the "dev".
>
> v5 -> v6:
> - Fix a race due to realising a wait-head from the gp-kthread;
> - Use our own private workqueue with WQ_MEM_RECLAIM to have
> at least one execution context.
>
> v5: https://lore.kernel.org/lkml/20240220183115.74124-1-urezki@gmail.com/
> v4: https://lore.kernel.org/lkml/ZZ2bi5iPwXLgjB-f@google.com/T/
> v3: https://lore.kernel.org/lkml/cd45b0b5-f86b-43fb-a5f3-47d340cd4f9f@paulmck-laptop/T/
> v2: https://lore.kernel.org/all/20231030131254.488186-1-urezki@gmail.com/T/
> v1: https://lore.kernel.org/lkml/20231025140915.590390-1-urezki@gmail.com/T/
Queued in place of your earlier series, thank you!
Not urgent, but which rcutorture scenario should be pressed into service
testing this?
Thanx, Paul
> Uladzislau Rezki (Sony) (6):
> rcu: Add data structures for synchronize_rcu()
> rcu: Reduce synchronize_rcu() latency
> rcu: Add a trace event for synchronize_rcu_normal()
> rcu: Support direct wake-up of synchronize_rcu() users
> rcu: Do not release a wait-head from a GP kthread
> rcu: Allocate WQ with WQ_MEM_RECLAIM bit set
>
> .../admin-guide/kernel-parameters.txt | 14 +
> include/trace/events/rcu.h | 27 ++
> kernel/rcu/tree.c | 361 +++++++++++++++++-
> kernel/rcu/tree.h | 20 +
> kernel/rcu/tree_exp.h | 2 +-
> 5 files changed, 422 insertions(+), 2 deletions(-)
>
> --
> 2.39.2
>
Powered by blists - more mailing lists