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avg 546f863d51 re-synchronize TSC-s on SMP systems after resume, if necessary
The TSC-s are checked and synchronized only if they were good
originally.  That is, invariant, synchronized, etc.

This is necessary on an AMD-based system where after a wakeup from STR I
see that BSP clock differs from AP clocks by a count that roughly
corresponds to one second.  The APs are in sync with each other.  Not
sure if this is a hardware quirk or a firmware bug.

This is what I see after a resume with this change:
    SMP: passed TSC synchronization test after adjustment
    acpi_timer0: restoring timecounter, ACPI-fast -> TSC-low

Reviewed by:	kib
MFC after:	3 weeks
Differential Revision: https://reviews.freebsd.org/D15551
2018-05-25 07:33:20 +00:00
bin sh: Split CNL syntax category to avoid a check on state[level].syntax 2018-05-21 21:52:48 +00:00
cddl ctf dwarf: don't report "no dwarf entry" as if it were an error 2018-05-19 18:50:58 +00:00
contrib Import libxo-0.9.0: 2018-05-23 01:20:31 +00:00
crypto Merge upstream patch to unbreak tunnel forwarding. 2018-05-16 14:04:39 +00:00
etc devd: Always install devmatch.conf 2018-05-21 21:44:47 +00:00
gnu Use a script wrapper for <compress>grep 2018-04-25 13:23:58 +00:00
include Add implementations for clog(3), clogf(3), and clog(3). 2018-05-13 09:54:34 +00:00
kerberos5 various: general adoption of SPDX licensing ID tags. 2017-11-27 15:37:16 +00:00
lib libpmcstat: Don't build pmu tables on !amd64 until the corresponding 2018-05-24 21:22:03 +00:00
libexec Make rtld use libc_nossp_pic.a. Remove SSP shims. 2018-05-09 10:30:56 +00:00
release release: arm64: Use loader.efi as bootaa64.efi for RPI3 and PINE64 2018-05-21 11:58:02 +00:00
rescue Avoid referencing private lib names directly. 2017-11-10 07:53:02 +00:00
sbin devd: drop WARNS back down to 3 until 6 actually works with GCC 2018-05-24 01:12:06 +00:00
secure Upgrade to OpenSSH 7.7p1. 2018-05-11 13:22:43 +00:00
share Remove extra space before parenthesis in src.conf(5) 2018-05-25 01:38:59 +00:00
stand - Unbreak booting sparc64 kernels after the metadata unification in 2018-05-21 01:20:19 +00:00
sys re-synchronize TSC-s on SMP systems after resume, if necessary 2018-05-25 07:33:20 +00:00
targets Add kernel and userspace code to dump the firmware state of supported 2018-03-08 15:21:56 +00:00
tests Export a breakpoint() function to userland for riscv. 2018-05-16 16:56:35 +00:00
tools Remove extra space before parenthesis in src.conf(5) 2018-05-25 01:38:59 +00:00
usr.bin Fix exit code for mismatches after r333013. 2018-05-24 22:15:47 +00:00
usr.sbin Fix a memory leak on topology_parse(). 2018-05-25 02:07:05 +00:00
.arcconfig callsign isn't required anymore 2016-09-29 06:19:45 +00:00
.arclint arc lint: ignore /tests/ in chmod 2017-12-19 03:38:06 +00:00
.gitattributes .git*: add gitattributes and gitignore 2017-12-25 21:07:54 +00:00
.gitignore .git*: add gitattributes and gitignore 2017-12-25 21:07:54 +00:00
COPYRIGHT Remove 'All Rights Reserved' from the collection copyright and templates. 2018-05-09 02:02:49 +00:00
LOCKS
MAINTAINERS top(1): add myself as a MAINTAIENR 2018-05-21 05:00:19 +00:00
Makefile Restore arm, riscv, sparc64, and mips to UNIVERSE after r334128 2018-05-24 14:01:22 +00:00
Makefile.inc1 libpmcstat: Don't build pmu tables on !amd64 until the corresponding 2018-05-24 21:22:03 +00:00
Makefile.libcompat X_COMPILER_* may not be defined. 2018-01-24 18:08:37 +00:00
Makefile.sys.inc AUTO_OBJ: For all top-level targets enforce using an OBJDIR. 2017-12-05 21:29:47 +00:00
ObsoleteFiles.inc Retire vxge(4). 2018-05-17 14:55:41 +00:00
README README: Reduce the textdump; describe the project 2018-05-23 04:09:01 +00:00
README.md README: Reduce the textdump; describe the project 2018-05-23 04:09:01 +00:00
UPDATING UPDATING: remove EOL whitespace in 20180523 entry 2018-05-24 17:08:55 +00:00

FreeBSD Source:

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

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), https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html, and https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html for more information, including setting make(1) variables.

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.

stand		Boot loader sources.

sys		Kernel sources.

sys/<arch>/conf Kernel configuration file

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