From: "Paul E. McKenney" <paulmck@kernel.org>
To: Joel Fernandes <joel@joelfernandes.org>
Cc: linux-kernel@vger.kernel.org,
Frederic Weisbecker <fweisbec@gmail.com>,
Jonathan Corbet <corbet@lwn.net>,
Josh Triplett <josh@joshtriplett.org>,
kernel-team@android.com, Lai Jiangshan <jiangshanlai@gmail.com>,
linux-doc@vger.kernel.org,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Mauro Carvalho Chehab <mchehab+samsung@kernel.org>,
rcu@vger.kernel.org, Steven Rostedt <rostedt@goodmis.org>,
luto@kernel.org
Subject: Re: [RFC v1 2/2] rcu/tree: Remove dynticks_nmi_nesting counter
Date: Thu, 29 Aug 2019 09:09:46 -0700 [thread overview]
Message-ID: <20190829160946.GP4125@linux.ibm.com> (raw)
In-Reply-To: <20190829144355.GE63638@google.com>
On Thu, Aug 29, 2019 at 10:43:55AM -0400, Joel Fernandes wrote:
[ . . . ]
> Paul, do we also nuke rcu_eqs_special_set()? Currently I don't see anyone
> using it. And also remove the bottom most bit of dynticks?
>
> Also what happens if a TLB flush broadcast is needed? Do we IPI nohz or idle
> CPUs are the moment?
>
> All of this was introduced in:
> b8c17e6664c4 ("rcu: Maintain special bits at bottom of ->dynticks counter")
Adding Andy Lutomirski on CC.
Andy, is this going to be used in the near term, or should we just get
rid of it?
Thanx, Paul
next prev parent reply other threads:[~2019-08-29 16:10 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-27 1:33 [RFC v1 2/2] rcu/tree: Remove dynticks_nmi_nesting counter Joel Fernandes (Google)
2019-08-27 1:40 ` Joel Fernandes
2019-08-28 20:23 ` Paul E. McKenney
2019-08-28 21:05 ` Joel Fernandes
2019-08-28 21:19 ` Paul E. McKenney
2019-08-28 21:42 ` Joel Fernandes
2019-08-28 22:01 ` Paul E. McKenney
2019-08-28 22:14 ` Joel Fernandes
2019-08-28 23:12 ` Paul E. McKenney
2019-08-29 1:51 ` Joel Fernandes
2019-08-29 3:43 ` Paul E. McKenney
2019-08-29 13:59 ` Joel Fernandes
2019-08-29 16:32 ` Paul E. McKenney
2019-08-29 14:43 ` Joel Fernandes
2019-08-29 15:13 ` Joel Fernandes
2019-08-29 16:13 ` Paul E. McKenney
2019-08-29 17:14 ` Joel Fernandes
2019-08-30 0:47 ` Paul E. McKenney
2019-08-30 1:20 ` Joel Fernandes
2019-08-30 2:45 ` Paul E. McKenney
2019-08-29 16:09 ` Paul E. McKenney [this message]
2019-08-29 16:21 ` Andy Lutomirski
2019-08-29 16:54 ` Paul E. McKenney
2019-08-29 19:00 ` Joel Fernandes
2019-08-30 0:48 ` Paul E. McKenney
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190829160946.GP4125@linux.ibm.com \
--to=paulmck@kernel.org \
--cc=corbet@lwn.net \
--cc=fweisbec@gmail.com \
--cc=jiangshanlai@gmail.com \
--cc=joel@joelfernandes.org \
--cc=josh@joshtriplett.org \
--cc=kernel-team@android.com \
--cc=linux-doc@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=luto@kernel.org \
--cc=mathieu.desnoyers@efficios.com \
--cc=mchehab+samsung@kernel.org \
--cc=rcu@vger.kernel.org \
--cc=rostedt@goodmis.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).