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From: Doug Anderson <dianders@chromium.org>
To: Joel Fernandes <joelaf@google.com>
Cc: Barret Rhoden <brho@google.com>,
	ksummit <ksummit-discuss@lists.linuxfoundation.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Jonathan Nieder <jrn@google.com>,
	Tomasz Figa <tfiga@chromium.org>,
	Han-Wen Nienhuys <hanwen@google.com>,
	Theodore Tso <tytso@google.com>,
	David Rientjes <rientjes@google.com>,
	Dmitry Torokhov <dtor@chromium.org>,
	Dmitry Vyukov <dvyukov@google.com>
Subject: Re: [Ksummit-discuss] Allowing something Change-Id (or something like it) in kernel commits
Date: Fri, 23 Aug 2019 09:45:25 -0700
Message-ID: <CAD=FV=Wsk__UTAazrypFRFpc-ou6a04sasf+70qF0ft02m++-w@mail.gmail.com> (raw)
In-Reply-To: <CAJWu+ooOzZ3vFsW40ok8M0MbrZOcx8xJsrN8Ra_VVq0EavzQfQ@mail.gmail.com>

Hi,

On Fri, Aug 23, 2019 at 9:35 AM Joel Fernandes via Ksummit-discuss
<ksummit-discuss@lists.linuxfoundation.org> wrote:
>
> On Fri, Aug 23, 2019 at 12:19 PM Dmitry Torokhov
> <dmitry.torokhov@gmail.com> wrote:
> >
> > Hi Thomas,
> >
> > On Fri, Aug 23, 2019 at 05:48:55PM +0200, Thomas Gleixner wrote:
> > >
> > > Yes, it's work for the submitter, but it's always work if the submitter
> > > wants to have a proper trace.
> >
> > Here is where I disagree with you. As a patch submitter, I frankly could
> > not care less about proper trace, history, etc. I might be putting cover
>
> But that is exactly what the problem statement is. Doug does care
> about tracing/history and wants that to be more robust etc.

Well, I care because I'm a system integrator, not because I'm a patch
submitter.  I try to make my patch submissions useful for system
integrators because I am also a system integrator.  ...but most patch
submitters don't try so hard.  We need to make this easy for them.


> > letter and outline the version changes, but I am doing that to reduce
> > friction and help committer to land my change. Thant's it. And
> > committers seem to have enough context from the provided version history
> > and memory of the previous iterations.
> >
> > Who this new ID benefits most is a system integrator that is tracking
> > all bits and pieces that are needed for their board to boot and work
> > properly. Hopefully the system integrator is a good community citizen
> > and not only wants to apply patches locally, but also make sure
> > stragglers end up in mainline after all. But they need additional
> > history to know whether the series was just forgotten, a new solution
> > was adopted instead, and so on.
> >
> > It also can help maintainers who need (maybe years later) to research
> > why particular change was made and whether there was additional
> > discussion around certain point of the change.
> >
> > The process you outlined above (collecting msg ids from previous
> > submissions, putting them into cover letter, etc) adds too much friction
> > at submission time so that submitters will not actually do any of that.
> > However having a git hook adding an ID to any new commit is much more
> > workable.
>
> I don't think a git-hook will solve what Doug is asking. There is
> always some need for manual labor to add the metadata pointing to
> previous patch posting. How does anyone but the patch submitter know
> what the link/id/whatever of the previous patch posting or series is?
> Unless git has some telepathy abilities that I did not know about.
>
> Since my day job involves gerrit usage, I have used gerrit and
> whenever I have a brand new patch for something; I have had to
> manually add the old Change-Id to the new change so that gerrit
> recognizes that it is linked to the old patch. That process is not
> done by a hook. Sure the initial generation is through a hook, but
> still.

You must have a different flow than I do.  For me the Change-Id just
naturally stays there as I make changes to the patch.  When I post
patches to an upstream list I keep them around as a local branch.
When changes are requested, I pick the old patches and amend to them.
...or I use "git rebase -i" and do a "FIXUP" to make changes to a
previous patch.  With this workflow the Change-Id is super low
friction and automatic.

...so for me the git-hook works perfectly well and the Change-Id just
naturally stays there in most cases.

Sure, if a given patch in the series is totally wrong and I re-write
it (but still want the re-write to be considered a new version of the
previous patch) then I have to manually copy the Change-Id for a
gerrit upload.  ...but I'd also be OK if people just get a new
Change-Id in this case.


-Doug

  reply index

Thread overview: 105+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-22 23:39 Doug Anderson
2019-08-23  0:03 ` Brendan Higgins
2019-08-23  0:17 ` Linus Torvalds
2019-08-23  0:30   ` Olof Johansson
2019-08-23  0:43     ` Guenter Roeck
2019-08-23  0:45       ` Olof Johansson
2019-08-23  1:05         ` Olof Johansson
2019-08-23  1:09           ` Dmitry Torokhov
2019-08-23  1:36         ` Theodore Y. Ts'o
2019-08-23  2:58           ` Linus Torvalds
2019-08-23  3:03             ` Linus Torvalds
2019-08-23 13:15               ` Sean Paul
2019-08-23 15:18                 ` Theodore Y. Ts'o
2019-08-23 15:31                   ` Sean Paul
2019-08-23 15:48                     ` Thomas Gleixner
2019-08-23 16:19                       ` Dmitry Torokhov
2019-08-23 16:35                         ` Joel Fernandes
2019-08-23 16:45                           ` Doug Anderson [this message]
2019-08-23 16:54                             ` Joel Fernandes
2019-08-23 18:00                               ` Doug Anderson
2019-08-23 19:08                                 ` Joel Fernandes
2019-08-23 19:15                                   ` Joel Fernandes
2019-08-23 19:23                                     ` Thomas Gleixner
2019-08-23 19:31                                       ` Joel Fernandes
2019-08-24 16:53                                   ` Doug Anderson
2019-08-23 16:46                           ` Dmitry Torokhov
2019-08-23 19:17                             ` Thomas Gleixner
2019-08-23 19:38                               ` Laurent Pinchart
2019-08-23 21:15                                 ` Thomas Gleixner
2019-08-23 21:25                                   ` Mark Brown
2019-08-24 23:13                                   ` Theodore Y. Ts'o
2019-08-25  7:09                                     ` Thomas Gleixner
2019-08-26 22:05                                       ` Thomas Gleixner
2019-08-28  8:50                                         ` Thomas Gleixner
2019-08-23 20:02                               ` Christian Brauner
2019-08-24 16:34                                 ` Doug Anderson
2019-08-24 18:11                                   ` Linus Torvalds
2019-08-24 23:04                                     ` Theodore Y. Ts'o
2019-08-25  3:11                                       ` Greg Kroah-Hartman
2019-08-27 10:51                                         ` Mark Brown
2019-09-09  8:14                                           ` Michael Ellerman
2019-09-09 12:09                                             ` Mark Brown
2019-08-26 17:13                                     ` Doug Anderson
2019-08-26 17:30                                       ` Joel Fernandes
2019-08-26 21:35                                         ` Doug Anderson
2019-08-26 21:51                                           ` Thomas Gleixner
2019-08-26 22:06                                             ` Doug Anderson
2019-08-26 22:19                                               ` Thomas Gleixner
2019-08-26 23:02                                           ` Theodore Y. Ts'o
2019-08-26 23:11                                             ` Doug Anderson
2019-09-16 14:11                                               ` Christian Brauner
2019-09-16 17:43                                               ` Al Viro
2019-09-16 18:05                                                 ` Doug Anderson
2019-08-26 23:43                                             ` Thomas Gleixner
2019-08-28 12:34                                               ` Christian Brauner
2019-08-27  0:29                                             ` Dmitry Vyukov
2019-08-27  6:06                                               ` Thomas Gleixner
2019-08-27 13:24                                                 ` Dmitry Vyukov
2019-08-27 13:48                                                   ` Greg Kroah-Hartman
2019-08-27 14:01                                                     ` Guenter Roeck
2019-08-27 14:09                                                       ` Thomas Gleixner
2019-08-27 15:33                                                         ` Greg Kroah-Hartman
2019-08-27 15:42                                                           ` Thomas Gleixner
2019-08-27 18:55                                                           ` Konstantin Ryabitsev
2019-08-27 19:53                                                             ` Greg Kroah-Hartman
2019-08-27 21:34                                                               ` Joel Fernandes
2019-08-27 21:38                                                                 ` Joel Fernandes
2019-08-28  9:08                                                                 ` Greg Kroah-Hartman
2019-08-28  9:25                                                                   ` Jani Nikula
2019-08-28 10:04                                                                   ` Martin K. Petersen
2019-08-28 10:53                                                                     ` Thomas Gleixner
2019-08-28 12:46                                                                       ` Martin K. Petersen
2019-08-28 10:42                                                                   ` Mark Brown
2019-08-28 11:41                                                                     ` Greg Kroah-Hartman
2019-08-28 12:22                                                                   ` Christian Brauner
2019-08-28 12:38                                                                   ` Joel Fernandes
2019-08-28 13:58                                                                     ` Theodore Y. Ts'o
2019-08-28 20:39                                                                       ` Doug Anderson
2019-08-28 20:46                                                                         ` Johannes Berg
2019-08-28 21:00                                                                           ` Doug Anderson
2019-08-28 22:15                                                                         ` Rob Herring
2019-08-27 17:34                                                       ` Geert Uytterhoeven
2019-08-27 18:50                                                         ` Guenter Roeck
2019-08-27 14:06                                                   ` Thomas Gleixner
2019-08-27  7:33                                               ` Geert Uytterhoeven
2019-08-27 13:30                                                 ` Dmitry Vyukov
2019-08-27 14:28                                                   ` Paul E. McKenney
2019-08-27 15:06                                                     ` Thomas Gleixner
2019-08-27 15:25                                                       ` Paul E. McKenney
2019-08-28  8:57                                                         ` Dan Carpenter
2019-08-23 15:49                     ` Doug Anderson
2019-08-23 15:54                       ` Thomas Gleixner
2019-08-23 15:59                         ` Thomas Gleixner
2019-08-23 16:38                           ` Doug Anderson
2019-08-23 16:50                             ` Andrew Lunn
2019-08-23 17:50                               ` Doug Anderson
2019-08-23 18:10               ` Konstantin Ryabitsev
2019-08-26 22:19               ` Paul Mackerras
2019-08-27  7:02                 ` Stephen Rothwell
2019-08-23  9:09             ` Vlastimil Babka
2019-08-23 12:48               ` Bhaskar Chowdhury
2019-08-23  1:01   ` Dmitry Torokhov
2019-08-23  1:07   ` Doug Anderson
2019-08-23  1:18     ` Joel Fernandes
2019-09-05  8:12 ` Eric Wong

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