dtrace: Add the 'oformat' libdtrace option

This option can be used to specify a format to use in DTrace output.
The following formats are supported:
- json
- xml
- html
- none (default DTrace ou

dtrace: Add the 'oformat' libdtrace option

This option can be used to specify a format to use in DTrace output.
The following formats are supported:
- json
- xml
- html
- none (default DTrace output)

This is implemented using libxo and integrated into libdtrace. Client
code only works with the following API:

- dtrace_oformat_setup(dtrace_hdl_t *) -- to be called when output is starting.
- dtrace_oformat_teardown(dtrace_hdl_t *) -- to be called when output is finished
- dtrace_oformat(dtrace_hdl_t *) -- check if oformat is enabled.
- dtrace_set_outfp(FILE *) -- sets the output file for oformat.
- Ensure that oformat is correctly checked in the drop handler and record
processing callbacks.

This commit also adds tests which check if the generated output is
valid (JSON, XML) and extends the dtrace(1) describing the structured output.

Reviewed by: markj
Discussed with: phil
MFC after: 2 months
Sponsored by: Innovate UK
Differential Revision: https://reviews.freebsd.org/D41745

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Trim various $FreeBSD$

Approved by: markj (cddl/contrib changes)
Reviewed by: imp, emaste
Differential Revision: https://reviews.freebsd.org/D41961

dtrace.1: fix mandoc -Tlint

Reviewed by: markj
Approved by: markj (mentor)
Differential Revision: https://reviews.freebsd.org/D40230

dtrace(1): add -d flag to dump D script post-dt_sugar

By specifying the -d flag, libdtrace will dump the D script after it has
applied syntactical sugar transformations (e.g if/else). This is useful

dtrace(1): add -d flag to dump D script post-dt_sugar

By specifying the -d flag, libdtrace will dump the D script after it has
applied syntactical sugar transformations (e.g if/else). This is useful
for both understanding what dt_sugar does, as well as debugging it.

Reviewed by: markj
Approved by: markj (mentor)
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D38732

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dtrace.1: Document a couple of preprocessor-related options

Suggested by: swills
MFC after: 1 week
Sponsored by: The FreeBSD Foundation

dtrace.1: Document -x ldpath

MFC after: 1 week
Sponsored by: The FreeBSD Foundation

dtrace: Document the libdir, nolibs and syslibdir options

MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D29541

Add HISTORY sections to ZFS and dtrace manpage

Reviewed by: bcr (mentor)
Approved by: bcr (mentor)
MFC after: 7 days
Differential Revision: https://reviews.freebsd.org/D23833

Merge ^/head r339813 through r340125.

dtrace(1): remove reference to dtruss that was removed from base
system in r300226.

PR: 211618
Reviewed by: gnn, markj, 0mp
Approved by: kib (mentor, implicit)
Differential Revision: https://review

dtrace(1): remove reference to dtruss that was removed from base
system in r300226.

PR: 211618
Reviewed by: gnn, markj, 0mp
Approved by: kib (mentor, implicit)
Differential Revision: https://reviews.freebsd.org/D17762

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Merge ^/head r337646 through r338014.

Add partial documentation for dtrace(1)'s -x configuration options.

Some options are still missing descriptions, but they can be filled in
over time.

Submitted by: raichoo <raichoo@googlemail.com>

Add partial documentation for dtrace(1)'s -x configuration options.

Some options are still missing descriptions, but they can be filled in
over time.

Submitted by: raichoo <raichoo@googlemail.com>
Reviewed by: 0mp (previous version)
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D16671

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Catch up with HEAD (r280229-r284686).

Merge sync of head

Merge from head

MFH: r280643-r281852

Sponsored by: The FreeBSD Foundation

MFH: r281668 through r281783

Sponsored by: The FreeBSD Foundation

Add manual pages for the io, ip, proc, sched, tcp and udp DTrace providers.
The format of these pages is somewhat experimental, so they may be subject
to further tweaking.

Differential Revision: htt

Add manual pages for the io, ip, proc, sched, tcp and udp DTrace providers.
The format of these pages is somewhat experimental, so they may be subject
to further tweaking.

Differential Revision: https://reviews.freebsd.org/D2170
Reviewed by: bcr, rpaulo
MFC after: 2 weeks

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Merge from head@274682

Sync to HEAD@r272516.

IFC @r272185

Fix the description of the -h option.

Reported by: swills
MFC after: 3 days

MFC @ r259205 in preparation for some SVM updates. (for real this time)

Merge head r233826 through r256722.

Merge head@256284