4474 DTrace Userland CTF Support
4475 DTrace userland Keyword
4476 DTrace tests should be better citizens
4479 pid provider types
4480 dof emulation is missing checks

illumos/illumos-gate@a386cc11a86ecb60f5a48078d22c1500e2ad003e
4471 DTrace count() with histogram
4472 DTrace full width distribution histograms
4473 DTrace frequency trails

illumos/illumos-gate@33093f5bcdc51014933497dd39374080c1ac5705
4470 overly aggressive D integer narrowing breaks 32-bit ustack helpers

illumos/illumos-gate@2e0552679e3175533ade93573ac1229d20a8367b
4757 ZFS embedded-data block pointers ("zero block compression")
4913 zfs release should not be subject to space checks

Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: Max Grossman <max.grossman@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Christopher Siden <christopher.siden@delphix.com>
Reviewed by: Dan McDonald <danmcd@omniti.com>
Approved by: Dan McDonald <danmcd@omniti.com>

illumos/illumos-dist@5d7b4d438c4a51eccc95e77a83a437b4d48380eb
4390 i/o errors when deleting filesystem/zvol can lead to space map corruption

Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Christopher Siden <christopher.siden@delphix.com>
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: Dan McDonald <danmcd@omniti.com>
Reviewed by: Saso Kiselkov <saso.kiselkov@nexenta.com>
Approved by: Dan McDonald <danmcd@omniti.com>

illumos/illumos-dist@7fd05ac4dec0c343d2f68f310d3718b715ecfbaf
4891 want zdb option to dump all metadata

Reviewed by: Sonu Pillai <sonu.pillai@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Christopher Siden <christopher.siden@delphix.com>
Reviewed by: Dan McDonald <danmcd@omniti.com>
Reviewed by: Richard Lowe <richlowe@richlowe.net>
Approved by: Garrett D'Amore <garrett@damore.org>

illumos/illumos-gate@df15e419cb7359ba56ddddab9045e438d89e7cbc
4756 metaslab_group_preload() could deadlock

Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Christopher Siden <christopher.siden@delphix.com>
Reviewed by: Dan McDonald <danmcd@omniti.com>
Reviewed by: Saso Kiselkov <saso.kiselkov@nexenta.com>
Approved by: Garrett D'Amore <garrett@damore.org>

illumos/illumos-gate@30beaff42d8240ebf5386e8b7a14e3d137a1631f
Fix a couple of bugs on amd64 when fetching probe arguments beyond the
first five for probes entered through a UD fault (i.e. FBT probes).

Specifically, handle the fact that dtrace_invop_callsite must be
16 byte-aligned and thus may not immediately follow the call to
dtrace_invop() in dtrace_invop_start(). Also fetch register arguments and
the stack pointer through a struct trapframe instead of a struct reg.

PR:		191260
Submitted by:	luke.tw@gmail.com
MFC after:	3 weeks
Tidy up fd-related functions called by do_execve

o assert in each one that fdp is not shared
o remove unnecessary NULL checks - all userspace processes have fdtables
and kernel processes cannot execve
o remove comments about the danger of fd_ofiles getting reallocated - fdtable
is not shared and fd_ofiles could be only reallocated if new fd was about to be
added, but if that was possible the code would already be buggy as setugidsafety
work could be undone

MFC after:	1 week
Fix some bugs when fetching probe arguments in i386. Firstly ensure that
the 4 byte-aligned dtrace_invop_callsite can be found and that it
immediately follows the call to dtrace_invop(). Secondly, fix some pointer
arithmetic to account for differences between struct i386_frame and illumos'
struct frame. Finally, ensure that dtrace_getarg() isn't inlined. It works
by following a fixed number of frame pointers to the probe site, so inlining
breaks it.

MFC after:	3 weeks
Restore the check for non-NULL dmatag in sndbuf_free.

The sound drivers that use own buffer management can use sndbuf_setup
and not do any busdma allocation, so the driver will end up with the
managed buffer but no valid dma map and tag for it. Avoid calling
bus_dmamem_free in such cases.

Reported by: ache
Missed in review by: kan
Catch up with r186809, correct comments.
Use correct names for the flags.  MAP_ENTRY_GROWS_* have the same
numerical values as MAP_STACK_GROWS_*, but the former is for entries'
eflags, while the later for the cow argument of vm_map_insert().

Submitted by:	alc
Add FPU_KERN_KTHR flag to fpu_kern_enter(9), which avoids saving FPU
context into memory for the kernel threads which called
fpu_kern_thread(9).  This allows the fpu_kern_enter() callers to not
check for is_fpu_kern_thread() to get the optimization.

Apply the flag to padlock(4) and aesni(4).  In aesni_cipher_process(),
do not leak FPU context state on error.

Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Add documentation for the fpu_kern(9) interfaces.

Many thanks to jmg for reviewing the (previous version) of the text
and providing grammar and content fixes.

Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
use .Mt to mark up email addresses consistently (part3)

PR:		191174
Submitted by:	Franco Fichtner  <franco at lastsummer.de>
use .Mt to mark up email addresses consistently (part4)

PR:		191174
Submitted by:	Franco Fichtner  <franco at lastsummer.de>
use .Mt to mark up email addresses consistently (part6)

PR:		191174
Submitted by:	Franco Fichtner <franco at lastsummer.de>
Several small fixes (typos, grammar, mdoc).
Fix markup and grammar.