From: Yury Norov <yury.norov@gmail.com>
To: "Paul E. McKenney" <paulmck@kernel.org>
Cc: rcu@vger.kernel.org, linux-kernel@vger.kernel.org,
kernel-team@fb.com, mingo@kernel.org, jiangshanlai@gmail.com,
akpm@linux-foundation.org, mathieu.desnoyers@efficios.com,
josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org,
rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com,
fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org
Subject: Re: [PATCH rcu 0/18] RCU no-CBs CPU updates for v5.17
Date: Wed, 1 Dec 2021 18:03:47 -0800 [thread overview]
Message-ID: <20211202020347.GB430494@lapt> (raw)
In-Reply-To: <20211202002848.GA3127439@paulmck-ThinkPad-P17-Gen-1>
On Wed, Dec 01, 2021 at 04:28:48PM -0800, Paul E. McKenney wrote:
> Hello!
...
> 17. Allow empty "rcu_nocbs" kernel parameter, courtesy of Frederic
> Weisbecker.
...
> Note that #17 might be updated given some ongoing work by Yury Norov
> to support "none" for bitmaps, including the cpumask taken by the
> rcu_nocbs kernel-boot parameter.
Hi Paul,
This is the only work that is needed to support 'none':
https://lkml.org/lkml/2021/11/24/2642
From the last discussion, it's not clear is this 'none' needed or not.
If needed, I'll submit the patch.
Thanks,
Yury
next prev parent reply other threads:[~2021-12-02 2:03 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-02 0:28 [PATCH rcu 0/18] RCU no-CBs CPU updates for v5.17 Paul E. McKenney
2021-12-02 0:28 ` [PATCH rcu 01/18] rcu: Tighten rcu_advance_cbs_nowake() checks Paul E. McKenney
2021-12-02 0:41 ` Frederic Weisbecker
2021-12-02 0:55 ` Paul E. McKenney
2021-12-02 0:28 ` [PATCH rcu 02/18] rcu/nocb: Make local rcu_nocb_lock_irqsave() safe against concurrent deoffloading Paul E. McKenney
2021-12-02 0:28 ` [PATCH rcu 03/18] rcu/nocb: Prepare state machine for a new step Paul E. McKenney
2021-12-02 0:28 ` [PATCH rcu 04/18] rcu/nocb: Invoke rcu_core() at the start of deoffloading Paul E. McKenney
2021-12-02 0:28 ` [PATCH rcu 05/18] rcu/nocb: Make rcu_core() callbacks acceleration preempt-safe Paul E. McKenney
2021-12-02 0:29 ` [PATCH rcu 06/18] rcu/nocb: Make rcu_core() callbacks acceleration (de-)offloading safe Paul E. McKenney
2021-12-02 0:29 ` [PATCH rcu 07/18] rcu/nocb: Check a stable offloaded state to manipulate qlen_last_fqs_check Paul E. McKenney
2021-12-02 0:29 ` [PATCH rcu 08/18] rcu/nocb: Use appropriate rcu_nocb_lock_irqsave() Paul E. McKenney
2021-12-02 0:29 ` [PATCH rcu 09/18] rcu/nocb: Limit number of softirq callbacks only on softirq Paul E. McKenney
2021-12-02 0:29 ` [PATCH rcu 10/18] rcu: Fix callbacks processing time limit retaining cond_resched() Paul E. McKenney
2021-12-02 0:29 ` [PATCH rcu 11/18] rcu: Apply callbacks processing time limit only on softirq Paul E. McKenney
2021-12-02 0:29 ` [PATCH rcu 12/18] rcu/nocb: Don't invoke local rcu core on callback overload from nocb kthread Paul E. McKenney
2021-12-02 0:29 ` [PATCH rcu 13/18] rcu/nocb: Remove rcu_node structure from nocb list when de-offloaded Paul E. McKenney
2021-12-02 0:29 ` [PATCH rcu 14/18] rcu/nocb: Prepare nocb_cb_wait() to start with a non-offloaded rdp Paul E. McKenney
2021-12-02 0:29 ` [PATCH rcu 15/18] rcu/nocb: Optimize kthreads and rdp initialization Paul E. McKenney
2021-12-02 0:29 ` [PATCH rcu 16/18] rcu/nocb: Create kthreads on all CPUs if "rcu_nocbs=" or "nohz_full=" are passed Paul E. McKenney
2021-12-02 0:29 ` [PATCH rcu 17/18] rcu/nocb: Allow empty "rcu_nocbs" kernel parameter Paul E. McKenney
2021-12-02 0:29 ` [PATCH rcu 18/18] rcu/nocb: Merge rcu_spawn_cpu_nocb_kthread() and rcu_spawn_one_nocb_kthread() Paul E. McKenney
2021-12-02 2:03 ` Yury Norov [this message]
2021-12-02 18:01 ` [PATCH rcu 0/18] RCU no-CBs CPU updates for v5.17 Paul E. McKenney
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