Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Another follow-up to r290475: Bump .Dd in sysctl_add_oid.9

Sponsored by: EMC / Isilon Storage Division

Round out SYSCTL macros to the full set of fixed-width types

Add S8, S16, S32, and U32 types; add SYSCTL*() macros for them, as well
as for the existing 64-bit types. (While SYSCTL*QUAD and UQUAD macros
already exist, they do not take the same sort of 'val' parameter that
the other macros do.)

Clean up the documented "types" in the sysctl.9 document. (These are
macros and thus not real types, but the manual page documents intent.)

The sysctl_add_oid(9) arg2 has been bumped from intptr_t to intmax_t to
accommodate 64-bit types on 32-bit pointer architectures.

This is just the kernel support piece; the userspace sysctl(1) support
will follow in a later patch.

Submitted by: Ravi Pokala <rpokala@panasas.com>
Reviewed by: cem
Relnotes: no
Sponsored by: Panasas
Differential Revision: https://reviews.freebsd.org/D4091

Add description of "sysctl_remove_name()" function.

- Updated SYSCTL manual pages after recent changes to the kernel
SYSCTL code. Added description of new macros and functions.
- Merged dynamic and static SYSCTL related content into a single
manual page, hence parameters and functionality is very much the same.
- Uppercased all occurrences of "OID".
- Updated all SYSCTL examples.

PR: 192101

use .Mt to mark up email addresses consistently (part6)

PR: 191174
Submitted by: Franco Fichtner <franco at lastsummer.de>

- Document the UQUAD sysctl variants.
- Clarify that exactly one of the "access" flags is required and
list the optional flags in a separate list. Prefer bundling
CTLFLAG_TUN into the access flag by not documenting it as an
optional flag to set.

Approved by: re (glebius)
MFC after: 1 week

mdoc: make pages render with mandoc

It's a bit more pedantic regarding .Bl list elements. This has an added
benefit of unbreaking the ipfw(8) manpage, where groff was silently
skipping one list element.

Implement the following macros for completeness:

SYSCTL_QUAD()
SYSCTL_ADD_QUAD()
TUNABLE_QUAD()
TUNABLE_QUAD_FETCH()

Now we can use 64bit tunables on 32bit systems.

Add a basic man page for the sysctl(9) macro interfaces. Previously man
pages existed only for the dynamic sysctl interfaces. There's probably
more complete and accurate content, better advice, etc, that could be added
here.

Per scottl's suggest, add a small piece of moralizing text regarding the
fact that sysctl names quickly get embedded in system configuration files,
libraries, third party applications, and even books, so renaming and
removing names after they've been published is a tricky issue.

MFC after: 1 month

Mechanically kill hard sentence breaks and double whitespaces.

Document sysctl_move_oid().

mdoc(7): Properly mark C headers.

Typo: s/CTLTYPE_DYN/CTLFLAG_DYN

PR: misc/45012
Submitted by: Steve Coltrin <spcoltri@omcl.org>

ispell sweep of share/man/man9/*.

Update function definitions and required include files to reflect
the current state of the system.

Approved by: alfred

Fixed missing include in synopsis.

Fixed bitrot in synopsis. Const'ification of string args had not reached
here.

Fixed some style bugs (superfluous quotes).

mdoc(7) police: Use the new .In macro for #include statements.

MFS: in HISTORY section, fix release number of first appearance

Removed whitespace at end-of-line; no content changes. I simply did
cd src/share; find man[1-9] -type f|xargs perl -pi -e 's/[ \t]+$//'

BTW, what editors are the culprits? I'm using vim and it shows
me whitespace at EOL in troff files with a thick blue block...

Reviewed by: Silence from cvs diff -b
MFC after: 7 days

mdoc(7) police: remove extraneous .Pp before and/or after .Sh.

Correct a typo.

mdoc(7) police: split punctuation characters + misc fixes.

Add a missing argument for SYSCTL_ADD_OPAQUE.

Fix the examples at the end which were horribly broken.

mdoc(7) police: use canonical form of .Dd macro.

Fix typo.

PR: 22923
Submitted by: Jimmy Olgeni <olgeni@uli.it>

Use FreeBSD.org, not freebsd.org, as has been the precedent.

Order the cross-references in the SEE ALSO section correctly.

Clean up this new manual page. This delta includes content and
whitespace changes, which should not be a problem because this
is only the second revision of the file and translators are
unlikely to have gotten started yet.

Reviewed by: abial

These patches implement dynamic sysctls. It's possible now to add
and remove sysctl oids at will during runtime - they don't rely on
linker sets. Also, the node oids can be referenced by more than
one kernel user, which means that it's possible to create partially
overlapping trees.

Add sysctl contexts to help programmers manage multiple dynamic
oids in convenient way.

Please see the manpages for detailed discussion, and example module
for typical use.

This work is based on ideas and code snippets coming from many
people, among them: Arun Sharma, Jonathan Lemon, Doug Rabson,
Brian Feldman, Kelly Yancey, Poul-Henning Kamp and others. I'd like
to specially thank Brian Feldman for detailed review and style
fixes.

PR: kern/16928
Reviewed by: dfr, green, phk