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markj e8967c8bd9 Add stack_save_td_running(), a function to trace the kernel stack of a
running thread.

It is currently implemented only on amd64 and i386; on these
architectures, it is implemented by raising an NMI on the CPU on which
the target thread is currently running. Unlike stack_save_td(), it may
fail, for example if the thread is running in user mode.

This change also modifies the kern.proc.kstack sysctl to use this function,
so that stacks of running threads are shown in the output of "procstat -kk".
This is handy for debugging threads that are stuck in a busy loop.

Reviewed by:	bdrewery, jhb, kib
Sponsored by:	EMC / Isilon Storage Division
Differential Revision:	https://reviews.freebsd.org/D3256
2015-09-11 03:54:37 +00:00
bin Expose an interface to determine if an ACE is inherited. 2015-09-04 00:14:20 +00:00
cddl Remove duplicate defines introduced in initial ZFS import (r168404) 2015-08-31 22:36:17 +00:00
contrib Update lldb's FREEBSD-Xlist to match reality. 2015-09-06 11:48:50 +00:00
crypto Fix OpenSSH multiple vulnerabilities by backporting three changes 2015-08-25 20:48:37 +00:00
etc Use read to parse a line instead of set. 2015-09-10 06:56:56 +00:00
games Correctly case FreeBSD in my entry in the tips file 2015-09-08 22:51:10 +00:00
gnu Remove .WAIT hacks and put in specific dependencies. 2015-08-28 16:23:03 +00:00
include Use bool rather than _Bool for C++ compatibility. 2015-08-19 18:32:12 +00:00
kerberos5 Move setting of LDFLAGS to the modules which require it actually, as 2015-08-27 17:16:18 +00:00
lib Remove the v_cache_min and v_cache_max sysctls. They are unused and have 2015-09-11 03:00:24 +00:00
libexec Fix how we place each objects thread local data. The code used was based 2015-09-01 15:57:03 +00:00
release Fix argument quoting and remove unnecessary braces 2015-09-10 22:47:26 +00:00
rescue Add META_MODE support. 2015-06-13 19:20:56 +00:00
sbin - Remove #ifdef HAVE_POLL_H. 2015-09-10 06:40:28 +00:00
secure Remove remnant from USEPRIVATELIB removal 2015-09-04 16:13:25 +00:00
share Handle default MAKEOBJDIR for META_MODE. 2015-09-11 00:19:49 +00:00
sys Add stack_save_td_running(), a function to trace the kernel stack of a 2015-09-11 03:54:37 +00:00
targets Roll WITHOUT_ELFTOOLCHAIN_TOOLS into WITHOUT_TOOLCHAIN 2015-08-13 17:50:47 +00:00
tests Use _exit() instead of exit() in child processes created during tests. 2015-09-09 22:54:07 +00:00
tools Expose an interface to determine if an ACE is inherited. 2015-09-04 00:14:20 +00:00
usr.bin Remove the v_cache_min and v_cache_max sysctls. They are unused and have 2015-09-11 03:00:24 +00:00
usr.sbin Remove unused target and initiator IDs. 2015-09-10 10:46:21 +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
LOCKS
MAINTAINERS
Makefile Fix generation of src.conf.5 2015-07-03 06:10:09 +00:00
Makefile.inc1 The ${BUILDKERNELS:[2..-1]} appears to produce a non zero result for 2015-09-02 15:42:14 +00:00
ObsoleteFiles.inc Belatedly add entries for libugidfw.so.4 to catch up with r284745. 2015-08-26 18:22:59 +00:00
README
UPDATING Add reminder to run etcupdate or mergemaster to get updated 2015-08-29 07:59:31 +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