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From: Uladzislau Rezki <urezki@gmail.com>
To: Daniel Axtens <dja@axtens.net>
Cc: Uladzislau Rezki <urezki@gmail.com>,
	Michael Ellerman <mpe@ellerman.id.au>,
	LKML <linux-kernel@vger.kernel.org>, RCU <rcu@vger.kernel.org>,
	"Paul E . McKenney" <paulmck@kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Frederic Weisbecker <frederic@kernel.org>,
	Neeraj Upadhyay <neeraju@codeaurora.org>,
	Joel Fernandes <joel@joelfernandes.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Michal Hocko <mhocko@suse.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	"Theodore Y . Ts'o" <tytso@mit.edu>,
	Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
	Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com>
Subject: Re: [PATCH 1/2] rcu-tasks: move RCU-tasks initialization out of core_initcall()
Date: Thu, 10 Dec 2020 19:17:19 +0100	[thread overview]
Message-ID: <20201210181719.GA2014@pc638.lan> (raw)
In-Reply-To: <875z59hjau.fsf@dja-thinkpad.axtens.net>

Hello, Daniel.

> Hi Vlad,
> 
> >> Initialize the RCU-tasks earlier, before *_initcall() callbacks are
> >> invoked. Do it after the workqueue subsytem is up and running. That
> >> gives us a possibility to make use of synchronize_rcu_tasks*() wait
> >> API in early_initcall() callbacks.
> >> 
> >> Fixes: 36dadef23fcc ("kprobes: Init kprobes in early_initcall")
> >> Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
> 
> Tested-by: Daniel Axtens <dja@axtens.net>
> 
Thank you for checking it!

> >> ---
> >>  include/linux/rcupdate.h |  6 ++++++
> >>  init/main.c              |  1 +
> >>  kernel/rcu/tasks.h       | 26 ++++++++++++++++++++++----
> >>  3 files changed, 29 insertions(+), 4 deletions(-)
> >> 
> > I still don't have a powerPC hw so far, even though i have sent a request
> > to the osuosl.org. It would be appreciated if Michael or Daniel could run
> > and verify it.
> 
> Sorry it's taken me so long to get to this. Your patch fixes things for
> me. Thanks!
> 
No problem. I fully understand that sometimes we are limited in spare time.

>
> BTW, I'm happy to see you taking on the challenge of RCU after your good
> work on vmalloc - all the best with it!
> 
Yep, that work was quite interesting and probably not so easy, at least
in the beginning. Thanks for your supportive words and same to you
regarding your excellent KASAN work and future challenge :)

--
Vlad Rezki

  parent reply	other threads:[~2020-12-10 18:20 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-09 20:27 [PATCH 1/2] rcu-tasks: move RCU-tasks initialization out of core_initcall() Uladzislau Rezki (Sony)
2020-12-09 20:27 ` [PATCH 2/2] rcu-tasks: add RCU-tasks self tests Uladzislau Rezki (Sony)
2020-12-16 15:49   ` Uladzislau Rezki
2020-12-16 23:29     ` Paul E. McKenney
2020-12-21 15:38       ` Uladzislau Rezki
2020-12-21 17:18         ` Paul E. McKenney
2020-12-21 18:45           ` Uladzislau Rezki
2020-12-21 19:29             ` Paul E. McKenney
2020-12-21 19:48               ` Uladzislau Rezki
2020-12-21 20:45                 ` Paul E. McKenney
2020-12-21 21:28                   ` Uladzislau Rezki
2021-02-12 19:20   ` Sebastian Andrzej Siewior
2021-02-12 21:12     ` Uladzislau Rezki
2021-02-12 23:48       ` Paul E. McKenney
2021-02-13  0:37         ` Paul E. McKenney
2021-02-13  0:43           ` Paul E. McKenney
2021-02-13 11:30             ` Uladzislau Rezki
2021-02-13 16:45               ` Paul E. McKenney
2021-02-13 20:00                 ` Uladzislau Rezki
2021-02-15 11:28                 ` Sebastian Andrzej Siewior
2021-02-16 17:30                   ` Paul E. McKenney
2021-02-17 14:47                     ` Masami Hiramatsu
2021-02-17 18:17                       ` Paul E. McKenney
2021-02-18  5:03                         ` Masami Hiramatsu
2021-02-18  8:36                           ` Uladzislau Rezki
2021-02-18 14:29                             ` Masami Hiramatsu
2020-12-09 20:37 ` [PATCH 1/2] rcu-tasks: move RCU-tasks initialization out of core_initcall() Uladzislau Rezki
2020-12-10 13:39   ` Daniel Axtens
2020-12-10 17:32     ` Paul E. McKenney
2020-12-10 18:17     ` Uladzislau Rezki [this message]
2020-12-10  3:26 ` Paul E. McKenney
2020-12-10 13:04   ` Uladzislau Rezki

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