sys: Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

LinuxKPI: add ns_to_timespec64()

Add ns_to_timespec64() which does not seem to require anything from
us given timespec64 is aliases to timespec.

Sponsored by: The FreeBSD Foundation
MFC after: 10 d

LinuxKPI: add ns_to_timespec64()

Add ns_to_timespec64() which does not seem to require anything from
us given timespec64 is aliases to timespec.

Sponsored by: The FreeBSD Foundation
MFC after: 10 days
Reviewed by: hselasky
Differential Revision: https://reviews.freebsd.org/D40123

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linuxkpi: Include linux/math64.h in linux/time.h

It's done like this in linux too.

Sponsored by: Beckhoff Automation GmbH & Co. KG

LinuxKPI: add MSEC_PER_SEC

Sponsored by: The FreeBSD Foundation
Reviewed by: imp, emaste
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D37087

LinuxKPI: Constantly use _LINUXKPI_ prefix in include guards

MFC after: 1 week
Reviewed by: bz, emaste, hselasky, manu
Differential Revision: https://reviews.freebsd.org/D33562

Make timespecadd(3) and friends public

The timespecadd(3) family of macros were imported from NetBSD back in
r35029. However, they were initially guarded by #ifdef _KERNEL. In the
meantime, we have

Make timespecadd(3) and friends public

The timespecadd(3) family of macros were imported from NetBSD back in
r35029. However, they were initially guarded by #ifdef _KERNEL. In the
meantime, we have grown at least 28 syscalls that use timespecs in some
way, leading many programs both inside and outside of the base system to
redefine those macros. It's better just to make the definitions public.

Our kernel currently defines two-argument versions of timespecadd and
timespecsub. NetBSD, OpenBSD, and FreeDesktop.org's libbsd, however, define
three-argument versions. Solaris also defines a three-argument version, but
only in its kernel. This revision changes our definition to match the
common three-argument version.

Bump _FreeBSD_version due to the breaking KPI change.

Discussed with: cem, jilles, ian, bde
Differential Revision: https://reviews.freebsd.org/D14725

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Wrap timespec64 into timespec in the LinuxKPI.

Submitted by: Johannes Lundberg <[email protected]>
MFC after: 1 week
Sponsored by: Mellanox Technologies
Sponsored by: Limelight Networks

Define USEC_PER_MSEC and USEC_PER_SEC in the LinuxKPI.

MFC after: 1 week
Sponsored by: Mellanox Technologies

A missing definition needed by ktime_to_ms().

Obtained from: kmacy @
MFC after: 1 week
Sponsored by: Mellanox Technologies

Finish process of moving the LinuxKPI module into the default kernel build.

- Move all files related to the LinuxKPI into sys/compat/linuxkpi and
its subfolders.
- Update sys/conf/files and some M

Finish process of moving the LinuxKPI module into the default kernel build.

- Move all files related to the LinuxKPI into sys/compat/linuxkpi and
its subfolders.
- Update sys/conf/files and some Makefiles to use new file locations.
- Added description of COMPAT_LINUXKPI to sys/conf/NOTES which in turn
adds the LinuxKPI to all LINT builds.
- The LinuxKPI can be added to the kernel by setting the
COMPAT_LINUXKPI option. The OFED kernel option no longer builds the
LinuxKPI into the kernel. This was done to keep the build rules for
the LinuxKPI in sys/conf/files simple.
- Extend the LinuxKPI module to include support for USB by moving the
Linux USB compat from usb.ko to linuxkpi.ko.
- Bump the FreeBSD_version.
- A universe kernel build has been done.

Reviewed by: np @ (cxgb and cxgbe related changes only)
Sponsored by: Mellanox Technologies

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