Renumber license clauses in sys/kern to avoid skipping #3

Merge ^/head r303250 through r304235.

Hide the boottime and bootimebin globals, provide the getboottime(9)
and getboottimebin(9) KPI. Change consumers of boottime to use the
KPI. The variables were renamed to avoid shadowing issues with

Hide the boottime and bootimebin globals, provide the getboottime(9)
and getboottimebin(9) KPI. Change consumers of boottime to use the
KPI. The variables were renamed to avoid shadowing issues with local
variables of the same name.

Issue is that boottime* should be adjusted from tc_windup(), which
requires them to be members of the timehands structure. As a
preparation, this commit only introduces the interface.

Some uses of boottime were found doubtful, e.g. NLM uses boottime to
identify the system boot instance. Arguably the identity should not
change on the leap second adjustment, but the commit is about the
timekeeping code and the consumers were kept bug-to-bug compatible.

Tested by: pho (as part of the bigger patch)
Reviewed by: jhb (same)
Discussed with: bde
Sponsored by: The FreeBSD Foundation
MFC after: 1 month
X-Differential revision: https://reviews.freebsd.org/D7302

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Merge head r233826 through r256722.

Merge from head

IFC @ r254014

IFC @253398

IFC @ r252763

acct: create a special plimit object and set it for exiting processes
instead of allocating new one each time

All limits are set to RLIM_INFINITY which sould be ok (even though we
care only about RL

acct: create a special plimit object and set it for exiting processes
instead of allocating new one each time

All limits are set to RLIM_INFINITY which sould be ok (even though we
care only about RLIMT_FSIZE in this case).

MFC after: 1 week

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acct: reduce code duplication by using acct_disable as cleanup for
failed kproc_create

MFC after: 1 week

Merge fresh head.

MFC

IFC @ r242684

Sync from head

Remove the support for using non-mpsafe filesystem modules.

In particular, do not lock Giant conditionally when calling into the
filesystem module, remove the VFS_LOCK_GIANT() and related
macros. St

Remove the support for using non-mpsafe filesystem modules.

In particular, do not lock Giant conditionally when calling into the
filesystem module, remove the VFS_LOCK_GIANT() and related
macros. Stop handling buffers belonging to non-mpsafe filesystems.

The VFS_VERSION is bumped to indicate the interface change which does
not result in the interface signatures changes.

Conducted and reviewed by: attilio
Tested by: pho

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IFC @ r238370

Merge head r233826 through r236168.

MFC

- Don't log messages saying that accounting is being disabled and enabled
if the accounting log file is atomically replaced with a new file
(such as during log rotation).
- Simplify accounting lo

- Don't log messages saying that accounting is being disabled and enabled
if the accounting log file is atomically replaced with a new file
(such as during log rotation).
- Simplify accounting log rotation a bit. There is no need to re-run
accton(8) after renaming the new log file to it's real name.

PR: kern/167321
Tested by: Jeremy Chadwick

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IFC @ r226824

MFC

In order to maximize the re-usability of kernel code in user space this
patch modifies makesyscalls.sh to prefix all of the non-compatibility
calls (e.g. not linux_, freebsd32_) with sys_ and updates

In order to maximize the re-usability of kernel code in user space this
patch modifies makesyscalls.sh to prefix all of the non-compatibility
calls (e.g. not linux_, freebsd32_) with sys_ and updates the kernel
entry points and all places in the code that use them. It also
fixes an additional name space collision between the kernel function
psignal and the libc function of the same name by renaming the kernel
psignal kern_psignal(). By introducing this change now we will ease future
MFCs that change syscalls.

Reviewed by: rwatson
Approved by: re (bz)

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Merge svn+ssh://svn.freebsd.org/base/head@209749

Use ISO C99 integer types in sys/kern where possible.

There are only about 100 occurences of the BSD-specific u_int*_t
datatypes in sys/kern. The ISO C99 integer types are used here more
often.

Merge from head