Merge from head

Merge ^/head r279759 through r279892.

Implement basic cpuset reporting in procstat via the -S flag.

Obtained from: Netflix, Inc.
MFC after: 3 days

Reintegrate head: r274132-r277384

Sponsored by: The FreeBSD Foundation

Reintegrate head revisions r273096-r277147

Sponsored by: The FreeBSD Foundation

MFHead @ r275232

r274961 through r275075

Convert to usr.bin/ to LIBADD
Reduce overlinking

Merge head from 7/28

MFC @ r266724

An SVM update will follow this.

IFC @266473

- Add support for dumping current resource usage for processes via a new -r
flag to procstat.
- Add an -H flag to request information about threads rather than processes
when dumping statistics.

- Add support for dumping current resource usage for processes via a new -r
flag to procstat.
- Add an -H flag to request information about threads rather than processes
when dumping statistics. Currently it is only used for -r to display
resource usage for individual threads instead of the entire process.

Reviewed by: kib (older version without -H)
MFC after: 1 month

show more ...

IFC @ r238370

IFC @ r236291.
Diff reductions to the enclosure driver made in r235911.

Merge head r233826 through r236168.

Bring DPADD in sync with LDADD.

IFC @230489 (pending review).

IFC to head to catch up the bhyve branch

Approved by: grehan@

usr.bin/procstat

Add -l flag to display resource limits.

PR: bin/161257
Reviewed by: kib
MFC after: 2 weeks

Add new options, -e and -x, to display process environment variables
and ELF auxiliary vectors.

MFC after: 2 weeks

MFC

- Commit work from libprocstat project. These patches add support for runtime
file and processes information retrieval from the running kernel via sysctl
in the form of new library, libprocstat.

- Commit work from libprocstat project. These patches add support for runtime
file and processes information retrieval from the running kernel via sysctl
in the form of new library, libprocstat. The library also supports KVM backend
for analyzing memory crash dumps. Both procstat(1) and fstat(1) utilities have
been modified to take advantage of the library (as the bonus point the fstat(1)
utility no longer need superuser privileges to operate), and the procstat(1)
utility is now able to display information from memory dumps as well.

The newly introduced fuser(1) utility also uses this library and able to operate
via sysctl and kvm backends.

The library is by no means complete (e.g. KVM backend is missing vnode name
resolution routines, and there're no manpages for the library itself) so I
plan to improve it further. I'm commiting it so it will get wider exposure
and review.

We won't be able to MFC this work as it relies on changes in HEAD, which
was introduced some time ago, that break kernel ABI. OTOH we may be able
to merge the library with KVM backend if we really need it there.

Discussed with: rwatson

show more ...

Update to current version of head.

MFC r204879:
Teach procstat(1) to display some information about signal disposition
and pending/blocked status for signals.

MFC r204880:
Add file forgotten in r204879.

Teach procstat(1) to display some information about signal disposition
and pending/blocked status for signals.

Reviewed by: rwatson
MFC after: 2 weeks