freebsd with flexible iflib nic queues
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Konstantin Belousov 35dfc644f5 Copy the fencing of the algorithm to do lock-less update and reading
of the timehands, from the kern_tc.c implementation to vdso.  Add
comments giving hints where to look for the algorithm explanation.

To compensate the removal of rmb() in userspace binuptime(), add
explicit lfence instruction before rdtsc.  On i386, add usual
complications to detect SSE2 presence; assume that old CPUs which do
not implement SSE2 also execute rdtsc almost in order.

Reviewed by:	alc, bde (previous version)
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
2015-08-04 12:33:51 +00:00
bin Cast uid and gid to the correct type for display to solve segfault in ls(1) on 32bit arches 2015-07-24 20:20:59 +00:00
cddl Add a src.conf option to build and install the DTrace test suite. 2015-08-02 00:37:33 +00:00
contrib Add ELF Tool Chain's brandelf(1) to contrib 2015-07-31 12:37:40 +00:00
crypto Fix multiple OpenSSH vulnerabilities. 2015-07-28 19:58:38 +00:00
etc rc.subr: Allow rc.conf.d with multi-directory local_startup. 2015-08-01 22:00:25 +00:00
games Fix a typo. 2015-07-02 11:46:35 +00:00
gnu Allow ELF Tool Chain elfcopy to be installed as objcopy 2015-07-29 18:45:38 +00:00
include Use the __sentinel attribute. 2015-07-08 16:21:10 +00:00
kerberos5 Fix a typo introduced in r262209. 2015-06-18 21:18:43 +00:00
lib Copy the fencing of the algorithm to do lock-less update and reading 2015-08-04 12:33:51 +00:00
libexec Staticfy and constify some variables and clean up the code a bit to make it 2015-07-28 02:32:40 +00:00
release Disable blkif indirect segment I/Os in EC2 by default due to performance 2015-07-30 04:01:00 +00:00
rescue Add META_MODE support. 2015-06-13 19:20:56 +00:00
sbin Fix ipfw range deletion. 2015-08-03 14:31:06 +00:00
secure Merge OpenSSL 1.0.1p. 2015-07-09 17:07:45 +00:00
share Revert r286236; vgonel() is a static function. 2015-08-04 08:16:18 +00:00
sys Copy the fencing of the algorithm to do lock-less update and reading 2015-08-04 12:33:51 +00:00
targets Updated depends 2015-07-03 06:11:54 +00:00
tests Clear P_TRACED before reparenting a detached process back to its 2015-08-01 16:27:52 +00:00
tools Add an example program (in Python) for the AMD Am79c900 (ILACC) 2015-08-02 21:24:03 +00:00
usr.bin Get it closes to style(9). 2015-08-04 07:04:36 +00:00
usr.sbin Avoid calling strlen() where we can use the strspn() return value. 2015-08-03 22:07:50 +00:00
.arcconfig Add repository.callsign, to help arcanist figure out what repo it's 2015-07-02 22:23:52 +00:00
.arclint phabricator related changes: 2015-04-20 20:33:22 +00:00
COPYRIGHT Bump copyright year. 2014-12-31 10:00:43 +00:00
LOCKS Explicitly require Security Officer's approval for kernel PRNG bits. 2013-09-17 14:19:05 +00:00
MAINTAINERS Remove cokane@ from MAINTAINERS for 3dfx(4)/tdfx(4) because their email 2014-11-25 05:25:12 +00:00
Makefile Import OpenSSL 1.0.1p. 2015-07-09 16:41:34 +00:00
Makefile.inc1 First cut of DTrace for AArch64. 2015-07-01 15:51:11 +00:00
ObsoleteFiles.inc Add removed tests to ObsoleteFiles.inc 2015-08-02 02:23:30 +00:00
README Import OpenSSL 1.0.1p. 2015-07-09 16:41:34 +00:00
UPDATING Clarify historical practice of not removing old entries. Add entry for 2015-07-29 21:15:50 +00:00

This is the top level of the FreeBSD source directory.  This file
was last revised on:
$FreeBSD$

For copyright information, please see the file COPYRIGHT in this
directory (additional copyright information also exists for some
sources in this tree - please see the specific source directories for
more information).

The Makefile in this directory supports a number of targets for
building components (or all) of the FreeBSD source tree.  See build(7)
and http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html
for more information, including setting make(1) variables.

The `buildkernel` and `installkernel` targets build and install
the kernel and the modules (see below).  Please see the top of
the Makefile in this directory for more information on the
standard build targets and compile-time flags.

Building a kernel is a somewhat more involved process.  See build(7), config(8),
and http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html
for more information.

Note: If you want to build and install the kernel with the
`buildkernel` and `installkernel` targets, you might need to build
world before.  More information is available in the handbook.

The kernel configuration files reside in the sys/<arch>/conf
sub-directory.  GENERIC is the default configuration used in release builds.
NOTES contains entries and documentation for all possible
devices, not just those commonly used.


Source Roadmap:
---------------

bin		System/user commands.

cddl		Various commands and libraries under the Common Development
		and Distribution License.

contrib		Packages contributed by 3rd parties.

crypto		Cryptography stuff (see crypto/README).

etc		Template files for /etc.

games		Amusements.

gnu		Various commands and libraries under the GNU Public License.
		Please see gnu/COPYING* for more information.

include		System include files.

kerberos5	Kerberos5 (Heimdal) package.

lib		System libraries.

libexec		System daemons.

release		Release building Makefile & associated tools.

rescue		Build system for statically linked /rescue utilities.

sbin		System commands.

secure		Cryptographic libraries and commands.

share		Shared resources.

sys		Kernel sources.

tests		Regression tests which can be run by Kyua.  See tests/README
		for additional information.

tools		Utilities for regression testing and miscellaneous tasks.

usr.bin		User commands.

usr.sbin	System administration commands.


For information on synchronizing your source tree with one or more of
the FreeBSD Project's development branches, please see:

  http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/synching.html