Remove $FreeBSD$: one-line sh pattern

Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/

pkgbase: Put dtrace in its own package

While dtrace is usefull some people might not want it.

Differential Revision: https://reviews.freebsd.org/D30752
Sponsored by: Diablotin Systems

Add dtrace SDT probe ipfw:::rule-matched.

It helps to reduce complexity with debugging of large ipfw rulesets.
Also define several constants and translators, that can by used by
dtrace scripts with this probe.

Reviewed by: gnn
Obtained from: Yandex LLC
MFC after: 2 weeks
Sponsored by: Yandex LLC
Differential Revision: https://reviews.freebsd.org/D26879

Introduce dwatch(1) as a tool for making DTrace more useful

Reviewed by: markj, gnn, bdrewery (earlier version)
Relnotes: yes
Sponsored by: Smule, Inc.
Differential Revision: https://reviews.freebsd.org/D10006

Remove the old version of the DTraceToolkit from the source tree.
The DTraceToolkit is part of the Open DTrace effort and is supported
on FreeBSD as a port (sysutils/DTraceToolkit) which has been updated
to properly track toolkit development upstream.

Sponsored by: DARPA, AFRL

Add an mbuf provider to DTrace.

The mbuf provider is made up of a set of Statically Defined Tracepoints
which help us look into mbufs as they are allocated and freed. This can be
used to inspect the buffers or for a simplified mbuf leak detector.

New tracepoints are:

mbuf:::m-init
mbuf:::m-gethdr
mbuf:::m-get
mbuf:::m-getcl
mbuf:::m-clget
mbuf:::m-cljget
mbuf:::m-cljset
mbuf:::m-free
mbuf:::m-freem

There is also a translator for mbufs which gives some visibility into the structure,
see mbuf.d for more details.

Reviewed by: bz, markj
MFC after: 2 weeks
Sponsored by: Rubicon Communications (Netgate)
Differential Revision: https://reviews.freebsd.org/D5682

fix tcpdebug: - assign to "flags" in each probe, not only debug-input
compute "len" in the same way in each probe

Submitted by: Hannes Mehnert
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D5524

Add scripts for watching common entry points.

MFC after: 3 days
X-MFC-to: stable/10

META MODE: These need object directories to handle staging.

Sponsored by: EMC / Isilon Storage Division

Add a little, but very useful script for use with programs that work using an
event loop and should sleep only when waiting for events (eg. via kevent(2)).
When a program is going to sleep in the kernel, the script will show its name,
PID, kernel stack trace and userland stack trace. Sleeping in kevent(2) is
ignored as it is expected to be valid.

Sample output:

# ./blocking lynxd

lynxd(15042) is blocking...

kernel`_cv_wait_sig+0x124
kernel`seltdwait+0xae
kernel`sys_poll+0x3a3
kernel`amd64_syscall+0x343
kernel`0xffffffff806c79ab

lynxd`poll+0xa
lynxd`pqSocketCheck+0xa2
lynxd`pqWaitTimed+0x29
lynxd`connectDBComplete+0xd7
lynxd`PQsetdbLogin+0x2ec
lynxd`db_connect+0x3c
lynxd`main+0x198
lynxd`_start+0x16f
0x2

lynxd(1925) is blocking...

kernel`_cv_wait+0x125
zfs.ko`zio_wait+0x5b
zfs.ko`dmu_buf_hold_array_by_dnode+0x1dc
zfs.ko`dmu_read+0xcb
zfs.ko`zfs_freebsd_getpages+0x37b
kernel`VOP_GETPAGES_APV+0xa7
kernel`vnode_pager_getpages+0x9a
kernel`vm_fault_hold+0x885
kernel`vm_fault+0x77
kernel`trap_pfault+0x211
kernel`trap+0x506
kernel`0xffffffff806c76c2

lynxd`EVP_add_cipher+0x13
lynxd`SSL_library_init+0x11
lynxd`main+0x94
lynxd`_start+0x16f
0x2

lynxd(1925) is blocking...

kernel`_cv_wait+0x125
zfs.ko`zio_wait+0x5b
zfs.ko`dbuf_read+0x791
zfs.ko`dbuf_findbp+0x12f
zfs.ko`dbuf_hold_impl+0xa2
zfs.ko`dbuf_hold+0x1b
zfs.ko`dmu_buf_hold_array_by_dnode+0x153
zfs.ko`dmu_read_uio+0x66
zfs.ko`zfs_freebsd_read+0x3a3
kernel`VOP_READ_APV+0xa1
kernel`vn_read+0x13a
kernel`vn_io_fault+0x10b
kernel`dofileread+0x95
kernel`kern_readv+0x68
kernel`sys_read+0x63
kernel`amd64_syscall+0x343
kernel`0xffffffff806c79ab

lynxd`_read+0xa
lynxd`__srefill+0x122
lynxd`fgets+0x78
lynxd`file_gets+0x1d
lynxd`BIO_gets+0x64
lynxd`PEM_read_bio+0xf5
lynxd`PEM_X509_INFO_read_bio+0x90
lynxd`X509_load_cert_crl_file+0x47
lynxd`by_file_ctrl+0x2e
lynxd`X509_STORE_load_locations+0x4a
lynxd`sslctx_init+0x255
lynxd`main+0x215
lynxd`_start+0x16f
0x2

Requested by: gnn
Obtained from: Wheel Systems http://wheelsystems.com

Add missing DTrace scripts that exist in the source tree to the Makefile for
install.
While here, sort the list.

Differential Revision: D2950
Submitted by: Jason Wolfe <j at nitrology.com>
Reviewed by: gnn, markj, hiren
Sponsored by: Limelight Networks

udp track shows UDP data as it arrives and leaves the system

TCP connection tracker that uses aggregations to show where connections
originate from.

Add a more complex TCP tracking script, which shows connections and
accepts as well as state transitions.

Add a TCP state tracking script based on FreeBSD TCP SDTs

add my scripts to measure io latency per disk...

Use src.opts.mk in preference to bsd.own.mk except where we need stuff
from the latter.

Add a new script, hotopen, which shows what uid is opening files
on a per second basis. While here clean up the Makefile as well.

MFC after: 1 week

Add support for our own DTrace scripts and those from the DTraceToolkit
to the build system. FreeBSD written scripts are stored in
src/share and the toolkit scripts are brought from the cddl directory
into a working tree via install.

MFC after: 2 weeks