From: Willy Tarreau <w@1wt.eu>
To: "Paul E. McKenney" <paulmck@kernel.org>
Cc: David Laight <David.Laight@ACULAB.COM>,
"'Nick Clifton'" <nickc@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
"stern@rowland.harvard.edu" <stern@rowland.harvard.edu>,
"linux-toolchains@vger.kernel.org"
<linux-toolchains@vger.kernel.org>, Will Deacon <will@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"parri.andrea@gmail.com" <parri.andrea@gmail.com>,
"boqun.feng@gmail.com" <boqun.feng@gmail.com>,
"npiggin@gmail.com" <npiggin@gmail.com>,
"dhowells@redhat.com" <dhowells@redhat.com>,
"j.alglave@ucl.ac.uk" <j.alglave@ucl.ac.uk>,
"luc.maranget@inria.fr" <luc.maranget@inria.fr>,
"akiyks@gmail.com" <akiyks@gmail.com>,
"dlustig@nvidia.com" <dlustig@nvidia.com>,
"joel@joelfernandes.org" <joel@joelfernandes.org>,
"torvalds@linux-foundation.org" <torvalds@linux-foundation.org>
Subject: Re: Control Dependencies vs C Compilers
Date: Tue, 6 Oct 2020 18:10:39 +0200 [thread overview]
Message-ID: <20201006161039.GF5822@1wt.eu> (raw)
In-Reply-To: <20201006155052.GJ29330@paulmck-ThinkPad-P72>
On Tue, Oct 06, 2020 at 08:50:52AM -0700, Paul E. McKenney wrote:
> Comparing 25+ assembly languages to but two compilers most definitely
> motivates looking hard at doing something with the compilers.
+1, especially since the kernel is not special; anyone working with
threads faces the same issues in userland, which are often hidden
behind the implicit whole-memory clobbers of certain operations or
the call to mutex manipulation functions, but which become a reality
again as soon as you go slightly away from these and try to use
lockless mechanisms.
Willy
next prev parent reply other threads:[~2020-10-06 16:11 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-06 11:47 Control Dependencies vs C Compilers Peter Zijlstra
2020-10-06 12:37 ` David Laight
2020-10-06 12:49 ` Willy Tarreau
2020-10-06 13:31 ` Peter Zijlstra
2020-10-06 14:23 ` stern
2020-10-06 14:43 ` Peter Zijlstra
2020-10-06 15:16 ` Nick Clifton
2020-10-06 15:37 ` David Laight
2020-10-06 15:50 ` Paul E. McKenney
2020-10-06 16:10 ` Willy Tarreau [this message]
2020-10-06 16:22 ` David Laight
2020-10-06 16:31 ` Paul E. McKenney
2020-10-06 15:07 ` David Laight
2020-10-06 21:20 ` Florian Weimer
2020-10-07 9:32 ` Peter Zijlstra
2020-10-07 10:20 ` Florian Weimer
2020-10-07 11:50 ` Peter Zijlstra
2020-10-07 17:11 ` Paul E. McKenney
2020-10-07 21:07 ` Peter Zijlstra
2020-10-07 21:20 ` Paul E. McKenney
2020-10-07 10:30 ` Willy Tarreau
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=20201006161039.GF5822@1wt.eu \
--to=w@1wt.eu \
--cc=David.Laight@ACULAB.COM \
--cc=akiyks@gmail.com \
--cc=boqun.feng@gmail.com \
--cc=dhowells@redhat.com \
--cc=dlustig@nvidia.com \
--cc=j.alglave@ucl.ac.uk \
--cc=joel@joelfernandes.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-toolchains@vger.kernel.org \
--cc=luc.maranget@inria.fr \
--cc=nickc@redhat.com \
--cc=npiggin@gmail.com \
--cc=parri.andrea@gmail.com \
--cc=paulmck@kernel.org \
--cc=peterz@infradead.org \
--cc=stern@rowland.harvard.edu \
--cc=torvalds@linux-foundation.org \
--cc=will@kernel.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).