FreeBSD_HEAD_amd64_gcc4.9 - Build #208 - Fixed

FreeBSD_HEAD_amd64_gcc4.9 - Build #208 - Fixed:

Build information: https://jenkins.FreeBSD.org/job/FreeBSD_HEAD_amd64_gcc4.9/208/
Full change log: https://jenkins.FreeBSD.org/job/FreeBSD_HEAD_amd64_gcc4.9/208/changes
Full build log: https://jenkins.FreeBSD.org/job/FreeBSD_HEAD_amd64_gcc4.9/208/console

Change summaries:

285664 by markj:
Pass the lock object to lockstat_nsecs() and return immediately if
LO_NOPROFILE is set. Some timecounter handlers acquire a spin mutex, and
we don't want to recurse if lockstat probes are enabled.

PR:		201642
Reviewed by:	avg
MFC after:	3 days

285663 by markj:
Modify lockstat_nsecs() to just return unless lockstat probes are actually
enabled. The cost of a timecounter read can be quite significant, and the
problem became more apparent after r284297, since that change resulted in
a call to lockstat_nsecs() for each acquisition of an rwlock read lock.

PR:		201642
Reviewed by:	avg
Tested by:	Jason Unovitch
MFC after:	3 days
Differential Revision:	https://reviews.freebsd.org/D3073

285662 by benno:
Merge driver for PMC Sierra's range of SAS/SATA HBAs.

Submitted by:	Achim Leubner <Achim.Leubner_at_pmcs.com>
Reviewed by:	scottl

285661 by ed:
Undo r285656.

It turns out that the CDDL sources already introduce a function called
thread_create(). I'll investigate what we can do to make these functions
coexist.

Reported by: Ivan Klymenko

285658 by bapt:
make ctdladm(8) return 0 is everything was ok.

retval is used to test the return of XML_Parse function which is ok if 1 is
returned and retval it directly returned to the main function and used as an
exit value.

if all the parsing part is done reset retval to 0 so that the command return 0
if everything ok

Differential Revision:	https://reviews.freebsd.org/D3102
Reviewed by:	trasz
MFC after:	3 days
Sponsored by:	gandi.net