Skip site navigation (1)Skip section navigation (2)
Date:      Thu, 17 Jan 2008 18:44:55 +0100
From:      Ivan Voras <ivoras@freebsd.org>
To:        freebsd-current@freebsd.org
Subject:   Re: RFC: Adding a hw.features[2] sysctl
Message-ID:  <fmo46o$8q4$1@ger.gmane.org>
In-Reply-To: <a2b6592c0801140903l78370630w50bf886d96118bb9@mail.gmail.com>
References:  <1200197787.67286.13.camel@shumai.marcuscom.com>	<20080113182457.GN929@server.vk2pj.dyndns.org>	<a2b6592c0801131721w25afae5bg3dcf6a90c1a3d2b7@mail.gmail.com>	<200801141254.20400.doconnor@gsoft.com.au>	<a2b6592c0801131838jcde3634le6087d2f784adcbc@mail.gmail.com>	<478AE741.1000105@comcast.net>	<a2b6592c0801140139v42bb6ab2s667ebceb9ba3ab16@mail.gmail.com>	<slrnfomt3j.i6j.csaba-ml@beastie.creo.hu>	<a2b6592c0801140747r2a7ec1e5q7cd858065399ae65@mail.gmail.com>	<slrnfon4at.i6j.csaba-ml@beastie.creo.hu> <a2b6592c0801140903l78370630w50bf886d96118bb9@mail.gmail.com>

next in thread | previous in thread | raw e-mail | index | archive | help
This is an OpenPGP/MIME signed message (RFC 2440 and 3156)
--------------enig01D30F736FAF44BD17665816
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: quoted-printable

Igor Mozolevsky wrote:

> Would you need
> ...features=3D0x178bfbff
> ...features2=3D0x1
> ...amd.features=3D0xe2500800
> ...amd.features20x3; or

Please go this way because applications that care only about "features2" =

will be unmoved if another manufacturer adds "features3" and=20
"features4". Programs made to depend on "features3" will simply get an=20
"not found" error at a system level when run on a machine that lacks=20
"features3", which is desirable and good design.

> I genuinely don't know (and don't have the time to work out) the
> actual overhead of a sysctl vs ioctl, so if someone knows please let
> me know :-)

Please don't start polluting /dev with info-only nodes. Sysctls are=20
designed exactly for that purpose.



--------------enig01D30F736FAF44BD17665816
Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: OpenPGP digital signature
Content-Disposition: attachment; filename="signature.asc"

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.5 (MingW32)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iD8DBQFHj5QXldnAQVacBcgRApCQAJ9rnbw+O910rWrv6xhtlHCnXI16qgCg+r0T
hOOoWqJxESQMFpLZ3eckibU=
=6tGc
-----END PGP SIGNATURE-----

--------------enig01D30F736FAF44BD17665816--




Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?fmo46o$8q4$1>