improve performance:
- Eliminate custom reference count and condition variable to monitor
threads entering the framework, as this had both significant overhead
and behaved badly in the face of contention.
- Replace reference count with two locks: an rwlock and an sx lock,
which will be read-acquired by threads entering the framework
depending on whether a give policy entry point is permitted to sleep
or not.
- Replace previous mutex locking of the reference count for exclusive
access with write acquiring of both the policy list sx and rw locks,
which occurs only when policies are attached or detached.
- Do a lockless read of the dynamic policy list head before acquiring
any locks in order to reduce overhead when no dynamic policies are
loaded; this a race we can afford to lose.
- For every policy entry point invocation, decide whether sleeping is
permitted, and if not, use a _NOSLEEP() variant of the composition
macros, which will use the rwlock instead of the sxlock. In some
cases, we decide which to use based on allocation flags passed to the
MAC Framework entry point.
As with the move to rwlocks/rmlocks in pfil, this may trigger witness
warnings, but these should (generally) be false positives as all
acquisition of the locks is for read with two very narrow exceptions
for policy load/unload, and those code blocks should never acquire
other locks.
Sponsored by: Google, Inc.
Obtained from: TrustedBSD Project
Discussed with: csjp (idea, not specific patch)
(1) Fix pcib_read/write_config prototypes.
(2) When contrainting a resource request for a 'subtractive' bridge,
it is important to select a range outside the base/limit
registers, since those are the only values known to not
possibly work. On my HP laptop, the base bridge excludes I/O
ports 0xa000-0xafff, however that was the range we were passing
up the tree. Instead, when a range spans the "hole" we now
arbitrarily pick the range just above the hole to allocate from.
All of my rl and xl cards, at a minimum, started working again on this
laptop with those fixes.
- When sending large PR-SCTP messages over a
lossy link we would incorrectly calculate the fwd-tsn
- When receiving large multipart pr-sctp packets we would
incorrectly send back a SACK that would renege improperly
on already received packets thus causing unneeded retransmissions.
is calculated as 0 which causes errors elsewhere.
Submitted by: KOIE Hidetaka <koie@suri.co.jp>
- When sched_affinity() is called with a thread that is not curthread we
need to handle the ON_RUNQ() case by adding the thread to the correct
run queue.
Submitted by: Justin Teller <justin.teller@gmail.com>
MFC after: 1 Week
__XOPEN_SOURCE >= 700, since mktemp() was withdrawn
from the standard. However, __XSI_VISIBLE is set to
700 in the default BSD envrionment, where mktemp()
should still exist; hence, check for this.
".note.ABI-tag" section.
The search order of a brand is changed, now first of all the
".note.ABI-tag" is looked through.
Move code which fetch osreldate for ELF binary to check_note() handler.
PR: 118473
Approved by: kib (mentor)
to possible breakages in the catalog handling code. Since then, that
code has been replaced by the secure code from NetBSD but NLS in libc
remained turned off. Tests have shown that the feature is stable and
working so we can now turn it on again.
- Add several new catalog files:
- ca_ES.ISO8859-1
- de_DE.ISO8859-1
- el_GR.ISO8859-7 (by manolis@ and keramida@)
- es_ES.ISO8859-1 (kern/123179, by carvay@)
- fi_FI.ISO8859-1
- fr_FR.ISO8859-1 (kern/78756, by thierry@)
- hu_HU.ISO8859-2 (by gabor@)
- it_IT.ISO8859-15
- nl_NL.ISO8859-1 (corrections by rene@)
- no_NO.ISO8859-1
- mn_MN.UTF-8 (by ganbold@)
- sk_SK.ISO8859-2
- sv_SE.ISO8859-1
(The catalogs without explicit source has been obtained from NetBSD.)
Approved by: attilio
installing with -DWITHOUT_INFO, otherwise one can experience a
failure trying to installworld on a system that is built with
-DWITHOUT_INFO (i.e., without /usr/bin/install-info).
Reported by: bland
MFC after: 3 days
1. The new mtree file should be created in the "host" system /tmp
2. The existing mtree file in the "host" system should not be deleted
Submitted by: scf
you can build the cross development tools and install them as
$XDEV-freebsd-xxx for each tool. This allows one to use autoconf to
find the tools for cross building scenarios.
booting because the CD driver did not use bounce buffers to ensure
request buffers sent to the BIOS were always in the first 1MB. Copy over
the bounce buffer logic from the BIOS disk driver (minus the 64k boundary
code for floppies) to fix this.
Reported by: kensmith
