Ksummit-Discuss Archive on lore.kernel.org
 help / color / Atom feed
From: Mike Rapoport <rppt@linux.ibm.com>
To: Linus Walleij <linus.walleij@linaro.org>
Cc: James Bottomley <James.Bottomley@hansenpartnership.com>,
	ksummit-discuss@lists.linuxfoundation.org,
	Marek Szyprowski <m.szyprowski@samsung.com>
Subject: Re: [Ksummit-discuss] [MAINTAINERS SUMMIT] Patch version changes in commit logs?
Date: Fri, 5 Jul 2019 22:34:44 +0300
Message-ID: <20190705193444.GB16150@rapoport-lnx> (raw)
In-Reply-To: <CACRpkdbqxwwKxjELS8WXtFHbq3L5b49XoEJjCdUOgRTNLTR_NQ@mail.gmail.com>

Hi,

On Fri, Jul 05, 2019 at 11:26:22AM +0200, Linus Walleij wrote:
> On Wed, Jul 3, 2019 at 3:51 PM Theodore Ts'o <tytso@mit.edu> wrote:
> 
> > Personally, if there is a case where it will be useful, it would
> > actually be better for developers to summarize the comments, and
> > design alternatives, considered and rejected, etc., in a cover letter,
> > or better yet in the kernel documentation as part of the design doc
> > for a largish feature, and then if it is a cover letter e-mailed out
> > to the mailing list, include a link to the URL of the cover letter
> > with some text so that a human being reading the commit log will know
> > that there is something actually worth their time to read, as opposed
> > to being treated to a huge amount of legislative history that, at the
> > end of the day, be a complete waste of time to someone trying to debug
> > a live production problem causing data outages for their company.
> 
> I agree. I recently wanted to look into the development history
> of the contiguous memory allocator merged in 2012. This patch set
> went through 24 (!) iterations duly summarized in the cover letter:
> https://lore.kernel.org/lkml/1333462221-3987-1-git-send-email-m.szyprowski@samsung.com/
> it not is on mm/cma.c.
> 
> The links to the earlier iterations on gmane are dead.
> 
> It is one of the more heroic attempts to fix a very real problem
> with memory management in embedded and mobile,
> the second part of which is hopefully coming to a resolution
> with John Stultz work on the ION destaging (ongoing).
> 
> The actual commit in the kernel looks like so:
> git log c64be2bb1c6eb43c838b2c6d57b074078be208dd
> 
> I would have to dig them all out of lore one by one to get
> the picture (and I guess I will). The story of CMA is a really
> interesting one, and now it is part of the MM core.
> Documentation/cma is pretty empty.
> 
> Asking Michal, Marek and Joonsoo who all worked hard on
> this to summarize the development and make the design
> and evolution of this feature understandable would be a
> pretty big development task in itself so I'm not gonna.
> 
> But maybe we should just merge a document with lore
> pointers to Documentation/cma for this feature, and others
> of the same impact?

If you anyway going to dig through it, putting a summary with lore pointers
in Documentation/ would be great.
 
> Yours,
> Linus Walleij
> _______________________________________________
> Ksummit-discuss mailing list
> Ksummit-discuss@lists.linuxfoundation.org
> https://lists.linuxfoundation.org/mailman/listinfo/ksummit-discuss
> 

-- 
Sincerely yours,
Mike.

  reply index

Thread overview: 106+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-28 20:11 Shuah Khan
2019-06-28 20:51 ` Luck, Tony
2019-06-28 21:05   ` Kees Cook
2019-06-28 21:07   ` Shuah Khan
2019-06-28 21:13     ` James Bottomley
2019-06-28 21:42       ` Shuah Khan
2019-06-28 21:07   ` Wolfram Sang
2019-06-29  6:19   ` Thomas Gleixner
2019-06-29  9:10     ` Christian Brauner
2019-06-29 13:43     ` Andrea Parri
2019-06-29 15:16       ` Thomas Gleixner
2019-06-30 16:31         ` Konstantin Ryabitsev
2019-07-01  7:20           ` Peter Zijlstra
2019-07-01  7:49             ` Thomas Gleixner
2019-07-01  7:53               ` Takashi Iwai
2019-07-17  9:23                 ` Dan Carpenter
2019-07-17  9:27                   ` Dan Carpenter
2019-07-17  9:28                   ` Greg KH
2019-07-17 16:09                     ` Linus Walleij
2019-07-17 20:44                       ` Greg KH
2019-07-18  9:09                       ` Linus Walleij
2019-07-22 17:02                       ` Kees Cook
2019-07-22 17:12                         ` Joe Perches
2019-07-01 17:27               ` Steven Rostedt
2019-07-01 17:55                 ` Thomas Gleixner
2019-07-01  9:48           ` Andrea Parri
2019-07-01  9:51             ` Andrea Parri
2019-07-02  4:40     ` Leon Romanovsky
2019-07-02  7:27       ` Geert Uytterhoeven
2019-07-02  9:48         ` Leon Romanovsky
2019-06-29  6:57   ` Takashi Iwai
2019-06-29  7:09     ` Thomas Gleixner
2019-06-29  7:18       ` Takashi Iwai
2019-06-29 11:20         ` Mark Brown
2019-06-30 16:01           ` Mauro Carvalho Chehab
2019-07-01  1:35             ` Andrew Donnellan
2019-07-01 11:10               ` Mark Brown
2019-08-08  5:24               ` Andrew Donnellan
2019-07-01  9:05       ` Jiri Kosina
2019-07-01  9:15         ` Sergey Senozhatsky
2019-07-04 12:15       ` Michael Ellerman
2019-07-04 13:24         ` Geert Uytterhoeven
2019-07-04 14:16           ` Thomas Gleixner
2019-07-05  3:37             ` Michael Ellerman
2019-07-05  4:10               ` Michael Ellerman
2019-07-05  6:28                 ` Thomas Gleixner
2019-07-05  8:24                   ` Geert Uytterhoeven
2019-07-04 14:22         ` James Bottomley
2019-07-05  3:24           ` Michael Ellerman
2019-07-06 14:02             ` Alexandre Belloni
2019-07-06 14:57               ` James Bottomley
2019-07-05  3:40           ` Michael Ellerman
2019-07-05  8:40           ` Geert Uytterhoeven
2019-06-28 21:07 ` James Bottomley
2019-07-01 15:06 ` David Howells
2019-07-01 15:40   ` Thomas Gleixner
2019-07-01 15:48     ` Laurent Pinchart
2019-07-01 15:50     ` James Bottomley
2019-07-01 17:54       ` Thomas Gleixner
2019-07-02 14:20         ` James Bottomley
2019-07-02 14:49           ` Thomas Gleixner
2019-07-02 15:10             ` James Bottomley
2019-07-02 15:18               ` James Bottomley
2019-07-02 15:39                 ` Shuah Khan
2019-07-02 15:51                   ` James Bottomley
2019-07-02 16:30                     ` Kees Cook
2019-07-02 21:16                       ` Konstantin Ryabitsev
2019-07-02 21:33                       ` James Bottomley
2019-07-02 22:07                         ` Thomas Gleixner
2019-07-02 22:26                           ` James Bottomley
2019-07-02 22:43                             ` Theodore Ts'o
2019-07-02 22:49                               ` Thomas Gleixner
2019-07-03 23:52                                 ` Ralf Ramsauer
2019-07-02 22:53                               ` James Bottomley
2019-07-02 23:12                                 ` Thomas Gleixner
2019-07-02 23:04                               ` Kees Cook
2019-07-02 23:18                                 ` Theodore Ts'o
2019-07-02 23:31                                   ` Kees Cook
2019-07-02 23:33                                   ` James Bottomley
2019-07-03  4:16                                     ` Theodore Ts'o
2019-07-03  4:50                                       ` James Bottomley
2019-07-03 14:42                                         ` Kees Cook
2019-07-02 23:41                                   ` Kees Cook
2019-07-03  7:51                                     ` Greg KH
2019-07-03  8:56                               ` Laurent Pinchart
2019-07-03  9:12                                 ` Thomas Gleixner
2019-07-03 12:39                                   ` Leon Romanovsky
2019-07-03 22:53                                     ` Laurent Pinchart
2019-07-03 13:50                                 ` Theodore Ts'o
2019-07-03 14:10                                   ` Jan Kara
2019-07-03 17:05                                     ` Mark Brown
2019-07-03 19:11                                   ` Frank Rowand
2019-07-05  9:26                                   ` Linus Walleij
2019-07-05 19:34                                     ` Mike Rapoport [this message]
2019-07-06  4:42                                     ` Theodore Ts'o
2019-07-07 21:56                                       ` Frank Rowand
2019-07-03 23:03                                 ` James Bottomley
2019-07-04  7:10                                   ` Geert Uytterhoeven
2019-07-05  9:03                                 ` Linus Walleij
2019-07-02 22:48                             ` Thomas Gleixner
2019-07-02 23:05                               ` James Bottomley
2019-07-02 19:03                     ` Shuah Khan
2019-07-02 15:30               ` Thomas Gleixner
2019-07-02 15:40                 ` James Bottomley
2019-07-02 15:49                   ` Thomas Gleixner
2019-07-02 20:44               ` Jiri Kosina

Reply instructions:

You may reply publically 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=20190705193444.GB16150@rapoport-lnx \
    --to=rppt@linux.ibm.com \
    --cc=James.Bottomley@hansenpartnership.com \
    --cc=ksummit-discuss@lists.linuxfoundation.org \
    --cc=linus.walleij@linaro.org \
    --cc=m.szyprowski@samsung.com \
    /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

Ksummit-Discuss Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/ksummit-discuss/0 ksummit-discuss/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 ksummit-discuss ksummit-discuss/ https://lore.kernel.org/ksummit-discuss \
		ksummit-discuss@lists.linuxfoundation.org
	public-inbox-index ksummit-discuss

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.linuxfoundation.lists.ksummit-discuss


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git