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From: Peter Zijlstra <peterz@infradead.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ingo Molnar <mingo@kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	"Paul E. McKenney" <paulmck@us.ibm.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: Re: [GIT PULL] locking fixes
Date: Thu, 4 May 2017 07:40:30 +0200	[thread overview]
Message-ID: <20170504054030.qghlje7odni7zbt5@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <CA+55aFyeXDJ1jMqF0j=4mp_atyu4MwkqFb0+MnjHR77qsJ012w@mail.gmail.com>

On Wed, May 03, 2017 at 04:21:01PM -0700, Linus Torvalds wrote:
> This is from last merge window, and the reason I react now is that
> nobody noticed or cared until we had a release..
> 
> On Mon, Feb 27, 2017 at 11:57 PM, Ingo Molnar <mingo@kernel.org> wrote:
> >
> > Peter Zijlstra (1):
> >       locking/refcounts: Out-of-line everything
> 
> This one is all good generally, but it has one really stupid side
> effect: it makes refcounting GPL-only.
> 
> That's just silly. These are functions that atomically add and
> subtract one. The only thing that making them GPL-only can possibly do
> is to make people hack around it, and lose the overflow handling
> debugging in the process.

These people are out-of-tree dubious licensed modules, right? I really
_really_ don't care about those.

> It also breaks any kref uses. Which is what drivers etc are supposed to use.

Greg KH had this to say:

"As all of the previous kref functions were in a GPL-only header file,
and included directly that way, they were already GPL-only symbols, so
there really was no change here except now the linker checks them.  If
you have questions about using inline GPL-only functions from a .h file,
in a non-GPL codebase, please consult your corporate lawyer to get
clarification."

 https://lkml.kernel.org/r/20170308094810.GB30552@kroah.com

> So that "move from inline to out-of-line" had a big subtle semantic
> change that was probably not intentional, and certainly not
> documented.

I'll take the not documented bit.

  reply	other threads:[~2017-05-04  5:40 UTC|newest]

Thread overview: 65+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-02-28  7:57 [GIT PULL] locking fixes Ingo Molnar
2017-02-28 18:37 ` Linus Torvalds
2017-03-01  8:30   ` [PATCH] locking/refcounts: Change WARN() to WARN_ONCE() Ingo Molnar
2017-03-01  8:33   ` [tip:locking/urgent] " tip-bot for Ingo Molnar
2017-05-03 23:21 ` [GIT PULL] locking fixes Linus Torvalds
2017-05-04  5:40   ` Peter Zijlstra [this message]
     [not found]     ` <CA+55aFymvtCAYHdz__3Lj=YqmORB7_A-NXrw=+h+60znJVsDTw@mail.gmail.com>
2017-05-04 22:44       ` Greg Kroah-Hartman
2017-05-04 22:51         ` refcount: change EXPORT_SYMBOL markings Greg Kroah-Hartman
  -- strict thread matches above, loose matches on Subject: below --
2023-09-22 10:12 [GIT PULL] locking fixes Ingo Molnar
2023-09-22 20:19 ` pr-tracker-bot
2021-07-11 13:22 Ingo Molnar
2021-07-11 18:22 ` pr-tracker-bot
2021-04-11 12:14 Ingo Molnar
2021-04-11 18:56 ` pr-tracker-bot
2021-03-21 10:53 Ingo Molnar
2021-03-21 18:45 ` pr-tracker-bot
2020-12-27  9:50 Ingo Molnar
2020-12-27 17:27 ` pr-tracker-bot
2020-08-15 11:13 Ingo Molnar
2020-08-16  1:55 ` pr-tracker-bot
2020-01-18 17:53 Ingo Molnar
2020-01-18 21:05 ` pr-tracker-bot
2019-12-17 11:27 Ingo Molnar
2019-12-17 19:20 ` pr-tracker-bot
2019-04-20  7:30 Ingo Molnar
2019-04-20 16:51 ` Linus Torvalds
2019-04-21 18:23   ` Ingo Molnar
2019-04-20 19:25 ` pr-tracker-bot
2019-02-10  8:53 Ingo Molnar
2019-02-10 18:30 ` pr-tracker-bot
2018-10-05  9:36 Ingo Molnar
2018-10-05 23:06 ` Greg Kroah-Hartman
2018-09-15 12:56 Ingo Molnar
2018-07-30 17:49 Ingo Molnar
2018-03-25  8:49 Ingo Molnar
2018-02-15  0:50 Ingo Molnar
2018-01-17 15:24 Ingo Molnar
2018-01-22  9:43 ` Geert Uytterhoeven
2018-01-22 10:39   ` Peter Zijlstra
2018-01-12 13:45 Ingo Molnar
2017-12-15 15:55 Ingo Molnar
2017-10-14 16:01 Ingo Molnar
2017-03-07 20:27 Ingo Molnar
2016-12-07 18:42 Ingo Molnar
2016-10-18 10:55 Ingo Molnar
2016-08-18 20:34 Ingo Molnar
2016-08-12 19:32 Ingo Molnar
2016-06-10 12:45 Ingo Molnar
2016-04-28 17:52 Ingo Molnar
2016-04-23 11:22 Ingo Molnar
2016-03-24  7:47 Ingo Molnar
2015-09-17  7:57 Ingo Molnar
2015-04-18 15:15 Ingo Molnar
2015-02-20 13:37 Ingo Molnar
2015-02-21  0:03 ` Linus Torvalds
2015-02-21  1:51   ` Linus Torvalds
2015-02-23  8:35     ` Christian Borntraeger
2015-02-21  5:07   ` Ingo Molnar
2015-02-21  5:16     ` Ingo Molnar
2015-02-21  5:28       ` Ingo Molnar
2015-01-11  8:39 Ingo Molnar
2014-10-31 11:06 Ingo Molnar
2014-04-16 11:39 Ingo Molnar
2014-01-15 18:15 Ingo Molnar
2009-12-10 19:45 Ingo Molnar

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