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From: Alan Stern <stern@rowland.harvard.edu>
To: Segher Boessenkool <segher@kernel.crashing.org>
Cc: "Paul E. McKenney" <paulmck@kernel.org>,
	Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
	will@kernel.org, Peter Zijlstra <peterz@infradead.org>,
	linux-kernel@vger.kernel.org,
	Linus Torvalds <torvalds@linux-foundation.org>,
	parri.andrea@gmail.com, boqun.feng@gmail.com, npiggin@gmail.com,
	dhowells@redhat.com, j.alglave@ucl.ac.uk, luc.maranget@inria.fr,
	akiyks@gmail.com, linux-toolchains@vger.kernel.org,
	linux-arch@vger.kernel.org
Subject: Re: [RFC PATCH] LKMM: Add ctrl_dep() macro for control dependency
Date: Sat, 2 Oct 2021 10:29:33 -0400	[thread overview]
Message-ID: <20211002142933.GA532982@rowland.harvard.edu> (raw)
In-Reply-To: <20211001191008.GA16711@gate.crashing.org>

On Fri, Oct 01, 2021 at 02:10:08PM -0500, Segher Boessenkool wrote:
> Compilers understand you want exactly what you wrote.  If you write
> something other than what you want, you only will get what you want by
> pure luck.

The problem is that at times you _can't_ write what you want because the
language offers no way to express it.

Alan

      parent reply	other threads:[~2021-10-02 14:29 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-28 21:15 [RFC PATCH] LKMM: Add ctrl_dep() macro for control dependency Mathieu Desnoyers
2021-09-29 12:06 ` Marco Elver
2021-10-01 15:45   ` Mathieu Desnoyers
2021-10-01 16:20     ` Linus Torvalds
2021-10-01 17:28       ` Mathieu Desnoyers
2021-10-01 18:18         ` Linus Torvalds
2021-09-29 12:28 ` Florian Weimer
2021-09-29 17:41   ` Segher Boessenkool
2021-09-29 19:46     ` Florian Weimer
2021-10-01 16:13     ` Mathieu Desnoyers
2021-10-01 16:26       ` Florian Weimer
2021-10-01 16:35         ` Linus Torvalds
2021-10-10 14:02           ` Florian Weimer
2021-10-14  0:01             ` Paul E. McKenney
2021-10-14  2:14               ` Alan Stern
2021-10-14 16:14                 ` Paul E. McKenney
2021-10-14 15:58               ` Florian Weimer
2021-10-14 16:23                 ` Paul E. McKenney
2021-10-14 18:19                   ` Florian Weimer
2021-10-14 21:09                     ` Paul E. McKenney
2021-10-14 22:36                       ` Linus Torvalds
2021-09-30 13:28   ` Mathieu Desnoyers
2021-09-29 14:47 ` Linus Torvalds
2021-09-29 14:54   ` Linus Torvalds
2021-09-29 19:50     ` Mathieu Desnoyers
2021-09-29 20:13       ` Mathieu Desnoyers
2021-09-29 19:27   ` Mathieu Desnoyers
2021-09-29 22:14     ` Linus Torvalds
2021-09-29 21:47 ` Segher Boessenkool
2021-09-29 23:57   ` Paul E. McKenney
2021-10-01 15:28     ` Mathieu Desnoyers
2021-10-01 22:53       ` Paul E. McKenney
2021-10-01 19:10     ` Segher Boessenkool
2021-10-01 22:50       ` Paul E. McKenney
2021-10-02 14:29       ` Alan Stern [this message]

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