Date: Mon, 13 Feb 2017 10:33:26 -0800 From: John Baldwin <jhb@freebsd.org> To: freebsd-arch@freebsd.org Cc: Warner Losh <imp@bsdimp.com>, Sean Bruno <sbruno@freebsd.org> Subject: Re: Thinning out GENERIC Message-ID: <2553875.ilSvFZYQZ6@ralph.baldwin.cx> In-Reply-To: <CANCZdfpGTFeyGJjjApkZhghsvRsv94Pmxv8O1Ldswa_OddaNnA@mail.gmail.com> References: <34e4e9bd-c7a8-e3e2-4cef-98a691ea7944@freebsd.org> <CANCZdfpGTFeyGJjjApkZhghsvRsv94Pmxv8O1Ldswa_OddaNnA@mail.gmail.com>
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On Monday, February 13, 2017 10:51:36 AM Warner Losh wrote:
> [[ It isn't just GENERIC, it's in every single kernel ]]
>
> On Sun, Feb 12, 2017 at 7:59 AM, Sean Bruno <sbruno@freebsd.org> wrote:
> > Index: sys/conf/files
> > ===================================================================
> > --- sys/conf/files (revision 313683)
> > +++ sys/conf/files (working copy)
> > @@ -2419,7 +2419,7 @@
> > dev/pci/pci_user.c optional pci
> > dev/pci/pcib_if.m standard
> > dev/pci/pcib_support.c standard
> > -dev/pci/vga_pci.c optional pci
> > +#dev/pci/vga_pci.c optional pci
> > dev/pcn/if_pcn.c optional pcn pci
> > dev/pdq/if_fea.c optional fea eisa
> > dev/pdq/if_fpa.c optional fpa pci
> >
> > I'm playing around with small x86 builds and wanted to come up with a
> > knob that disables the vga_pci driver. Obviously I still want pci(4) to
> > be enabled, but I definitely do not need the vga interfaces for
> > anything. Any suggestions?
>
> You could make it dependent on vt or sc as well as pci, no?
This is a fairly small driver:
6139 340 8 6487 0x1957 /usr/obj/usr/src/sys/GENERIC
/vga_pci.o
(From an 11.0-stable build)
device ppc and friends is a lot more for example:
text data bss dec hex filename
6238 0 0 6238 0x185e /usr/obj/usr/src/sys/GENERIC/ppb_1284.o
1675 28 0 1703 0x6a7 /usr/obj/usr/src/sys/GENERIC/ppb_base.o
2042 0 0 2042 0x7fa /usr/obj/usr/src/sys/GENERIC/ppb_msq.o
6025 296 8 6329 0x18b9 /usr/obj/usr/src/sys/GENERIC/ppbconf.o
0 168 0 168 0xa8 /usr/obj/usr/src/sys/GENERIC/ppbus_if.o
9099 36 0 9135 0x23af /usr/obj/usr/src/sys/GENERIC/ppc.o
495 256 0 751 0x2ef /usr/obj/usr/src/sys/GENERIC/ppc_acpi.o
1671 256 0 1927 0x787 /usr/obj/usr/src/sys/GENERIC/ppc_isa.o
1124 208 0 1332 0x534 /usr/obj/usr/src/sys/GENERIC/ppc_pci.o
451 208 0 659 0x293 /usr/obj/usr/src/sys/GENERIC/ppc_puc.o
2751 428 8 3187 0xc73 /usr/obj/usr/src/sys/GENERIC/ppi.o
It is needed for drm.
--
John Baldwin
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