sys: Remove $FreeBSD$: one-line sh pattern

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

sys: Retire OPENZFS_CWARNFLAGS now that it is empty.

Reviewed by: markj, emaste
Differential Revision: https://reviews.freebsd.org/D39217

openzfs: fix gcc kernel module builds

- Suppress -Wredundant-decls. Ultimately this warning is harmless in
any case, and it does not look like there is a simple way to avoid
redundant declar

openzfs: fix gcc kernel module builds

- Suppress -Wredundant-decls. Ultimately this warning is harmless in
any case, and it does not look like there is a simple way to avoid
redundant declarations in this case without a lot of header pollution
(e.g. having openzfs's shim param.h pulling in sys/kernel.h for hz).
- Suppress -Wnested-externs, which is useless anyway.

Unfortunately it was not sufficient just to modify OPENZFS_CFLAGS,
because the warning suppressions need to appear on the command line
after they are explicitly enabled by CWARNFLAGS from sys/conf/kern.mk,
but OPENZFS_CFLAGS get added before due to use of -I for the shims.

Reviewed by: markj
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D27685

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Merge OpenZFS support in to HEAD.

The primary benefit is maintaining a completely shared
code base with the community allowing FreeBSD to receive
new features sooner and with less effort.

I would a

Merge OpenZFS support in to HEAD.

The primary benefit is maintaining a completely shared
code base with the community allowing FreeBSD to receive
new features sooner and with less effort.

I would advise against doing 'zpool upgrade'
or creating indispensable pools using new
features until this change has had a month+
to soak.

Work on merging FreeBSD support in to what was
at the time "ZFS on Linux" began in August 2018.
I first publicly proposed transitioning FreeBSD
to (new) OpenZFS on December 18th, 2018. FreeBSD
support in OpenZFS was finally completed in December
2019. A CFT for downstreaming OpenZFS support in
to FreeBSD was first issued on July 8th. All issues
that were reported have been addressed or, for
a couple of less critical matters there are
pull requests in progress with OpenZFS. iXsystems
has tested and dogfooded extensively internally.
The TrueNAS 12 release is based on OpenZFS with
some additional features that have not yet made
it upstream.

Improvements include:
project quotas, encrypted datasets,
allocation classes, vectorized raidz,
vectorized checksums, various command line
improvements, zstd compression.

Thanks to those who have helped along the way:
Ryan Moeller, Allan Jude, Zack Welch, and many
others.

Sponsored by: iXsystems, Inc.
Differential Revision: https://reviews.freebsd.org/D25872

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Stop compiling dtrace modules with -DSMP.

I believe this is left over from when dtrace was being ported and
developed out-of-tree. Now it just ensures that dtrace.ko and a non-SMP
kernel have incom

Stop compiling dtrace modules with -DSMP.

I believe this is left over from when dtrace was being ported and
developed out-of-tree. Now it just ensures that dtrace.ko and a non-SMP
kernel have incompatible KBIs.

PR: 243711
Sponsored by: The FreeBSD Foundation

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Move most of the contents of opt_compat.h to opt_global.h.

opt_compat.h is mentioned in nearly 180 files. In-progress network
driver compabibility improvements may add over 100 more so this is
close

Move most of the contents of opt_compat.h to opt_global.h.

opt_compat.h is mentioned in nearly 180 files. In-progress network
driver compabibility improvements may add over 100 more so this is
closer to "just about everywhere" than "only some files" per the
guidance in sys/conf/options.

Keep COMPAT_LINUX32 in opt_compat.h as it is confined to a subset of
sys/compat/linux/*.c. A fake _COMPAT_LINUX option ensure opt_compat.h
is created on all architectures.

Move COMPAT_LINUXKPI to opt_dontuse.h as it is only used to control the
set of compiled files.

Reviewed by: kib, cem, jhb, jtl
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D14941

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sys/modules: normalize .CURDIR-relative paths to SRCTOP

This simplifies make output/logic

Tested with: `cd sys/modules; make ALL_MODULES=` on amd64
MFC after: 1 month
Sponsored by: Dell EMC Isilon

Replace the implementation of DTrace's RAND subroutine for generating
low-quality random numbers with a modern implementation (xoroshiro128+)
that is capable of generating better quality randomness w

Replace the implementation of DTrace's RAND subroutine for generating
low-quality random numbers with a modern implementation (xoroshiro128+)
that is capable of generating better quality randomness without compromising performance.

Submitted by: Graeme Jenkinson
Reviewed by: markj
MFC after: 2 weeks
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D9051

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Re-support CWARNFLAGS, lost when bsd.sys.mk was removed. Also, support
CWARNFALGS.$file centrally so we don't have to have it in all the
places. Remove a few warning flags that are no longer needed.

Re-support CWARNFLAGS, lost when bsd.sys.mk was removed. Also, support
CWARNFALGS.$file centrally so we don't have to have it in all the
places. Remove a few warning flags that are no longer needed.
Also, always use -Wno-unknown-pragma to (hopefully temporarily) work
around #pragma ident in debug.h in the opensolaris code. Remove some
stale warning suppression that's no longer necessary.

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Avoid using ${.CURDIR} so that the module can be built from multiple
directories.

Obtained from: Juniper Networks, Inc.

Revert r268007, and re-adapt MFV r260708:

4427 pid provider rejects probes with valid UTF-8 names

Use of u8_textprep.c required -Wno-cast-qual for powerpc.

MFC after: 2 weeks

Revert r267869:

MFV r260708
4427 pid provider rejects probes with valid UTF-8 names

Use of u8_textprep.c broke the build on powerpc.

Reported by: bz, rpaulo and tinderbox.
Pointyhat: me

MFV r260708

4427 pid provider rejects probes with valid UTF-8 names

This make use of Solaris' u8_validate() which we happen to
use since r185029 for ZFS.

Illumos Revision: 1444d846b126463eb1059a57

MFV r260708

4427 pid provider rejects probes with valid UTF-8 names

This make use of Solaris' u8_validate() which we happen to
use since r185029 for ZFS.

Illumos Revision: 1444d846b126463eb1059a572ff114d51f7562e5

Reference:
https://www.illumos.org/issues/4427

Obtained from: Illumos
MFC after: 2 weeks

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Use SYSDIR to reference to the top of the sys hierarchy. Define SYSDIR
relative to .CURDIR if not already defined. This makes the makefiles
more readable but also more re-usable and adaptable.

Obtai

Use SYSDIR to reference to the top of the sys hierarchy. Define SYSDIR
relative to .CURDIR if not already defined. This makes the makefiles
more readable but also more re-usable and adaptable.

Obtained from: Juniper Networks, Inc.

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Add fasttrap for PowerPC. This is the last piece of the dtrace/ppc puzzle.
It's incomplete, it doesn't contain full instruction emulation, but it should be
sufficient for most cases.

MFC after: 1 m

Add fasttrap for PowerPC. This is the last piece of the dtrace/ppc puzzle.
It's incomplete, it doesn't contain full instruction emulation, but it should be
sufficient for most cases.

MFC after: 1 month

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opensolaris code: translate INVARIANTS to DEBUG and ZFS_DEBUG

Do this by forcing inclusion of
sys/cddl/compat/opensolaris/sys/debug_compat.h
via -include option into all source files from OpenSolari

opensolaris code: translate INVARIANTS to DEBUG and ZFS_DEBUG

Do this by forcing inclusion of
sys/cddl/compat/opensolaris/sys/debug_compat.h
via -include option into all source files from OpenSolaris.
Note that this -include option must always be after -include opt_global.h.

Additionally, remove forced definition of DEBUG for some modules and fix
their build without DEBUG.

Also, meaning of DEBUG was overloaded to enable WITNESS support for some
OpenSolaris (primarily ZFS) locks. Now this overloading is removed and
that use of DEBUG is replaced with a new option OPENSOLARIS_WITNESS.

MFC after: 17 days

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Update for the recent location of the fasttrap code.

Sponsored by: The FreeBSD Foundation

MFtbemd:

Use MACHINE_CPUARCH in preference to MACHINE_ARCH. The former is the
source code location of the machine, the latter the binary output. In
general, we want to use MACHINE_CPUARCH instead

MFtbemd:

Use MACHINE_CPUARCH in preference to MACHINE_ARCH. The former is the
source code location of the machine, the latter the binary output. In
general, we want to use MACHINE_CPUARCH instead of MACHINE_ARCH unless
we're tesitng for a specific target. The isn't even moot for
i386/amd64 where there's momemntum towards a MACHINE_CPUARCH == x86,
although a specific cleanup for that likely would be needed...

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Add the DTrace kernel module makefiles.