freebsd with flexible iflib nic queues
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Konstantin Belousov df8dd6025a amd64: stop using top of the thread' kernel stack for FPU user save area
Instead do one more allocation at the thread creation time.  This frees
a lot of space on the stack.

Also do not use alloca() for temporal storage in signal delivery sendsig()
function and signal return syscall sys_sigreturn().  This saves equal
amount of space, again by the cost of one more allocation at the thread
creation time.

A useful experiment now would be to reduce KSTACK_PAGES.

Reviewed by:	jhb, markj
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D31954
2021-09-21 20:20:15 +03:00
.cirrus-ci Cirrus-CI: add some timing info on pkg install failure 2021-08-04 15:02:00 -04:00
.github [skip ci] fix syntax in CODEOWNERS 2021-07-22 10:58:54 -06:00
bin ls(1): Allow LSCOLORS to specify an underline 2021-09-19 13:52:12 +02:00
cddl dtrace.1: Document a couple of preprocessor-related options 2021-09-07 14:04:50 -04:00
contrib readelf: document that -u / --unwind is not yet implemented 2021-09-17 10:22:05 -04:00
crypto openssh: use global state for blacklist in grace_alarm_handler 2021-09-16 14:10:11 -04:00
etc Add support for jail.conf.d 2021-09-10 00:30:04 -05:00
gnu dialog: fix macro redefinition 2021-03-01 16:01:44 +01:00
include Add _Fork() 2021-08-03 21:19:32 +03:00
kerberos5 pkgbase: Create a FreeBSD-kerberos package 2021-09-07 10:23:14 +02:00
lib libcam: Define depop structures and introduce scsi_wrap 2021-09-20 16:27:59 -06:00
libexec The linux rc.d script mounts several filesystems related to Linux ABI 2021-09-19 22:25:26 -07:00
release EC2: Default to UEFI booting 2021-09-16 12:23:19 -07:00
rescue Fix building rescue/rescue when sanitizers are enabled 2021-07-06 12:18:30 +01:00
sbin camcontrol: depop command 2021-09-20 16:27:59 -06:00
secure openssh: Add new source files to libssl 2021-09-10 00:56:24 +02:00
share bitset(9): Introduce BIT_FOREACH_ISSET and BIT_FOREACH_ISCLR 2021-09-21 12:07:39 -04:00
stand efi loader: Typo 2021-09-21 12:09:55 -04:00
sys amd64: stop using top of the thread' kernel stack for FPU user save area 2021-09-21 20:20:15 +03:00
targets Fix bootstrapping to actually build lldb-tblgen for later use 2021-08-24 15:04:25 +01:00
tests vfs: Permit unix sockets to be opened with O_PATH 2021-09-17 14:19:06 -04:00
tools stress2: Update test to ensure propper cleanup of fifo files 2021-09-20 07:36:27 +00:00
usr.bin calendar.freebsd: Fix off-by-one error 2021-09-17 16:07:23 -07:00
usr.sbin syslog.conf.5: Fix the message priority order 2021-09-21 12:07:39 -04:00
.arcconfig Remove history.immutable from .arcconfig 2021-04-13 12:36:25 +01:00
.arclint arc lint: ignore /tests/ in chmod 2017-12-19 03:38:06 +00:00
.cirrus.yml Cirrus-CI: add a manually triggered arm64 task 2021-09-14 15:12:55 -04:00
.clang-format clang-format: Add bitset loop macros 2021-09-21 12:08:01 -04:00
.gitattributes Add a basic clang-format configuration file 2019-06-07 15:23:52 +00:00
.gitignore gitignore: Add .clangd and .ccls-cache 2021-06-04 16:56:08 +08:00
COPYRIGHT copyrights: Happy New Year 2021 2020-12-31 10:29:44 -05:00
LOCKS LOCKS: update current locks 2018-06-09 03:08:04 +00:00
MAINTAINERS [skip ci] volunteer to maintain POSIX AIO 2021-05-30 17:21:12 -06:00
Makefile Revert "Fix native-xtools build" 2021-08-03 10:00:28 -07:00
Makefile.inc1 Fix spelling of BUILDENV_SHELL 2021-09-11 13:27:11 +01:00
Makefile.libcompat Prefer MK_SSP=no to SSP_CFLAGS= 2021-08-04 15:23:22 -03:00
Makefile.sys.inc AUTO_OBJ: For all top-level targets enforce using an OBJDIR. 2017-12-05 21:29:47 +00:00
ObsoleteFiles.inc Don't build and install {llvm,clang,lldb}-tblgen for the target 2021-09-06 09:32:41 +01:00
README.md Whitespace cleanup 2021-03-12 19:57:58 +08:00
RELNOTES RELNOTES: Add entries for KASAN and KMSAN 2021-08-11 13:08:36 -04:00
UPDATING UPDATING: Add entry for commit 55089ef4f8 2021-09-11 15:44:52 -07:00

FreeBSD Source:

This is the top level of the FreeBSD source directory.

FreeBSD is an operating system used to power modern servers, desktops, and embedded platforms. A large community has continually developed it for more than thirty years. Its advanced networking, security, and storage features have made FreeBSD the platform of choice for many of the busiest web sites and most pervasive embedded networking and storage devices.

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), config(8), FreeBSD handbook on building userland, and Handbook for kernels for more information, including setting make(1) variables.

Source Roadmap:

Directory Description
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 and gnu/COPYING.LIB 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.
stand Boot loader sources.
sys Kernel sources.
sys/arch/conf Kernel configuration files. GENERIC is the configuration used in release builds. NOTES contains documentation of all possible entries.
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 FreeBSD Handbook.