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Alan Cox 230869e051 When the swap pager allocates space on disk, it requests contiguous
blocks in a single call to blist_alloc().  However, when it frees
that space, it previously called blist_free() on each block, one at a
time.  With this change, the swap pager identifies ranges of
contiguous blocks to be freed, and calls blist_free() once per
range.  In one extreme case, that is described in the review, the time
to perform an munmap(2) was reduced by 55%.

Submitted by:	Doug Moore <dougm@rice.edu>
Reviewed by:	kib
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D12397
2017-11-28 17:46:03 +00:00
bin various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
cddl Add basic tests for ctfconvert(1), fold(1) and rs(1) 2017-11-27 20:01:58 +00:00
contrib Update vis(3) the latest from NetBSD. 2017-11-28 01:35:28 +00:00
crypto Merge OpenSSL 1.0.2m. 2017-11-02 18:04:29 +00:00
etc Add basic tests for ctfconvert(1), fold(1) and rs(1) 2017-11-27 20:01:58 +00:00
gnu build-tools: De-special-case the gcc tools build. 2017-10-31 19:02:05 +00:00
include netconfig.h: sync with upstream. 2017-11-27 17:18:31 +00:00
kerberos5 various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
lib Sync bsd_to_linux_errno[] table with i386 and amd64 tables in the sys directory. 2017-11-28 16:25:46 +00:00
libexec libexec: adoption of SPDX licensing ID tags. 2017-11-27 15:25:02 +00:00
release Set DISTDIR and WRKDIRPREFIX when building ports within the 2017-11-28 16:00:27 +00:00
rescue Avoid referencing private lib names directly. 2017-11-10 07:53:02 +00:00
sbin various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
secure secure: chase removal of pkg_install 2017-11-11 07:21:49 +00:00
share bhnd(4): Fix bcma/siba core reset behavior 2017-11-27 22:13:30 +00:00
stand Modify all FreeBSD bootloaders on PowerPC AIM (Book-S) systems to pass a 2017-11-24 23:41:04 +00:00
sys When the swap pager allocates space on disk, it requests contiguous 2017-11-28 17:46:03 +00:00
targets Merge ^/head r325842 through r325998. 2017-11-19 12:36:03 +00:00
tests vfs_lookup: Allow PATH_MAX-1 symlinks 2017-11-17 19:25:39 +00:00
tools Fix handling -U. It does not take any arguments. 2017-11-27 02:28:40 +00:00
usr.bin Add basic tests for ctfconvert(1), fold(1) and rs(1) 2017-11-27 20:01:58 +00:00
usr.sbin diskinfo(8): Delete dead code in slog test 2017-11-27 21:10:50 +00:00
.arcconfig
.arclint
COPYRIGHT
LOCKS
MAINTAINERS Move sys/boot to stand. Fix all references to new location 2017-11-14 23:02:19 +00:00
Makefile Use TARGET_ARCH=riscv64 when TARGET=riscv 2017-11-21 19:23:12 +00:00
Makefile.inc1 Fix for multi-threaded lib32 compat build on amd64. 2017-11-24 14:29:32 +00:00
Makefile.libcompat Fix nested MAKEOBJDIRPREFIX breaking various release/buildworld/toolchain targets. 2017-11-05 00:11:51 +00:00
Makefile.sys.inc Fix top-level targets with read-only OBJDIR. 2017-11-18 20:01:15 +00:00
ObsoleteFiles.inc Fix another typo 2017-11-27 04:24:48 +00:00
README Correct the URLs for both READMEs for tracking src 2017-10-29 20:29:31 +00:00
README.md Correct the URLs for both READMEs for tracking src 2017-10-29 20:29:31 +00:00
UPDATING Fill in date. 2017-11-26 04:55:23 +00:00

FreeBSD Source:

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 https://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 https://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.

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:

https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/current-stable.html