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Date:      Fri, 23 Oct 2020 18:13:17 -0600
From:      Warner Losh <imp@bsdimp.com>
To:        Kyle Evans <kevans@freebsd.org>
Cc:        Niclas Zeising <zeising@freebsd.org>, "Alexander V. Chernikov" <melifaro@ipfw.ru>,  Hans Petter Selasky <hps@selasky.org>, Emmanuel Vadot <manu@freebsd.org>,  "src-committers@freebsd.org" <src-committers@freebsd.org>,  "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>,  "svn-src-head@freebsd.org" <svn-src-head@freebsd.org>
Subject:   Re: svn commit: r366372 - in head/sys: compat/linuxkpi/common/include/linux compat/linuxkpi/common/src conf
Message-ID:  <CANCZdfoG8%2Bi80iu0xkFc%2BwVGB2Wn_eWUiNZM4XhEoTBf8nxy1w@mail.gmail.com>
In-Reply-To: <CACNAnaHYihBaAUPgLoMnezysaNmcteF22xkebRo%2B9z=jsb2ZPQ@mail.gmail.com>
References:  <202010021826.092IQfdj023808@repo.freebsd.org> <44421602932538@mail.yandex.ru> <de21fae4-d362-d938-a382-6ab08168e149@selasky.org> <43251602934532@mail.yandex.ru> <f384771b-c68a-ab60-2fe1-e1f2011ea198@selasky.org> <59021602950992@mail.yandex.ru> <CANCZdfoWMxccQBZBry18VDDzyUH2Dr44UasKb4qayxFTiLCGug@mail.gmail.com> <CACNAnaHfeMo6W1ReEq8DGiVy8pURWtvtOCRkr2VW51xiiB7drw@mail.gmail.com> <d48584a4-50df-70a3-8859-a0fa94f6cc45@freebsd.org> <CACNAnaHYihBaAUPgLoMnezysaNmcteF22xkebRo%2B9z=jsb2ZPQ@mail.gmail.com>

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I was going to suggest and try this change, but life has been complicated...

Has it been committed?

Warner

On Thu, Oct 22, 2020, 1:43 PM Kyle Evans <kevans@freebsd.org> wrote:

> On Thu, Oct 22, 2020 at 2:35 PM Niclas Zeising <zeising@freebsd.org>
> wrote:
> >
> > On 2020-10-22 15:22, Kyle Evans wrote:
> > > On Sat, Oct 17, 2020 at 11:40 AM Warner Losh <imp@bsdimp.com> wrote:
> > >>
> > >>
> > >>
> > >> On Sat, Oct 17, 2020, 10:11 AM Alexander V. Chernikov <
> melifaro@ipfw.ru> wrote:
> > >>>
> > >>> 17.10.2020, 14:07, "Hans Petter Selasky" <hps@selasky.org>:
> > >>>
> > >>> On 2020-10-17 14:34, Alexander V. Chernikov wrote:
> > >>>
> > >>>   17.10.2020, 12:32, "Hans Petter Selasky" <hps@selasky.org>:
> > >>>
> > >>>        On 2020-10-17 13:27, Alexander V. Chernikov wrote:
> > >>>
> > >>>              02.10.2020, 19:26, "Emmanuel Vadot" <manu@freebsd.org
> > >>>            <mailto:manu@freebsd.org>>:
> > >>>
> > >>>                   Author: manu
> > >>>                   Date: Fri Oct 2 18:26:41 2020
> > >>>                   New Revision: 366372
> > >>>                   URL:
> https://svnweb.freebsd.org/changeset/base/366372
> > >>>
> > >>>                   Log:
> > >>>                      linuxkpi: Add backlight support
> > >>>
> > >>>                      Add backlight function to linuxkpi.
> > >>>                      Graphics drivers expose the backlight of the
> panel directly so
> > >>>            allow them
> > >>>                   to use the backlight subsystem so
> > >>>                      user can use backlight(8) to configure them.
> > >>>
> > >>>                      Reviewed by: hselasky
> > >>>                      Relnotes: yes
> > >>>                      Differential Revision: The FreeBSD Foundation
> > >>>
> > >>>                   Added:
> > >>>
> head/sys/compat/linuxkpi/common/include/linux/backlight.h
> > >>>            (contents,
> > >>>                   props changed)
> > >>>                   Modified:
> > >>>
> head/sys/compat/linuxkpi/common/include/linux/device.h
> > >>>                      head/sys/compat/linuxkpi/common/src/linux_kmod.c
> > >>>                      head/sys/compat/linuxkpi/common/src/linux_pci.c
> > >>>                      head/sys/conf/kmod.mk
> > >>>
> > >>>              It breaks the build for me with
> > >>>
> /usr/home/melifaro/free/head/sys/compat/linuxkpi/common/src/linux_pci.c:70:10:
> > >>>              fatal error: 'backlight_if.h' file not found
> > >>>
> > >>>
> > >>>        How do you build? Doesn't break over here.
> > >>>
> > >>>   GENERIC + COMPAT_LINUXKPI.
> > >>>
> > >>>
> > >>>
> > >>> Try adding:
> > >>>
> > >>> options backlight
> > >>>
> > >>> To the kernel config.
> > >>>
> > >>> Yep, thank you!
> > >>> Maybe it's worth considering adding static assert with the message
> describing this dependency?
> > >>
> > >>
> > >> Yes. It likely is worth doing something to highlight this issue.
> > >>
> > >> Warner
> > >>
> > >
> > > I think we just need to slap the two core backlight files with an ` |
> > > compat_linux` so that they simply get pulled in if you specify
> > > COMPAT_LINUX. config(8) handles this terribly, configng must have a
> > > better provides/requires/implies/whatever functionality so we can
> > > specify that compat_linux implies backlight and not do crud like this
> > > where it becomes more complicated to see what any given option really
> > > entails.
> > >
> > > Thanks,
> >
> > COMPAT_LINUX can't be right.  Isn't that the linuxolator?
> > Regards
> > --
> > Niclas Zeising
>
> Whoops, s/LINUX/LINUXKPI/
>
> :-)
>



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