my tests, it is faster ~20%, even on an old IXP425 533MHz it is ~45%
faster... This is partly due to loop unrolling, so the code size does
significantly increase... I do plan on committing a version that
rolls up the loops again for smaller code size for embedded systems
where size is more important than absolute performance (it'll save ~6k
code)...
The kernel implementation is now shared w/ userland's libcrypt and
libmd...
We drop support for sha256 from sha2.c, so now sha2.c only contains
sha384 and sha512...
Reviewed by: secteam@
change... This eliminates a cast, and also forces td_retval
(often 2 32-bit registers) to be aligned so that off_t's can be
stored there on arches with strict alignment requirements like
armeb (AVILA)... On i386, this doesn't change alignment, and on
amd64 it doesn't either, as register_t is already 64bits...
This will also prevent future breakage due to people adding additional
fields to the struct...
This gets AVILA booting a bit farther...
Reviewed by: bde
attributed if an ExtINT arrives during interrupt injection.
Also, fix a spurious interrupt if the PIC tries to raise an interrupt
before the outstanding one is accepted.
Finally, improve the PIC interrupt latency when another interrupt is
raised immediately after the outstanding one is accepted by creating a
vmexit rather than waiting for one to occur by happenstance.
Approved by: neel (co-mentor)
When killing a %job started without job control, kill all processes in it.
As with process groups and zombies, if any process in the job can be killed
or has already terminated, the command is successful.
This also fixes occasional failures of the builtins/kill1.0 test.
linking NIC Receive Side Scaling (RSS) to the network stack's
connection-group implementation. This prototype (and derived patches)
are in use at Juniper and several other FreeBSD-using companies, so
despite some reservations about its maturity, merge the patch to the
base tree so that it can be iteratively refined in collaboration rather
than maintained as a set of gradually diverging patch sets.
(1) Merge a software implementation of the Toeplitz hash specified in
RSS implemented by David Malone. This is used to allow suitable
pcbgroup placement of connections before the first packet is
received from the NIC. Software hashing is generally avoided,
however, due to high cost of the hash on general-purpose CPUs.
(2) In in_rss.c, maintain authoritative versions of RSS state intended
to be pushed to each NIC, including keying material, hash
algorithm/ configuration, and buckets. Provide software-facing
interfaces to hash 2- and 4-tuples for IPv4 and IPv6 using both
the RSS standardised Toeplitz and a 'naive' variation with a hash
efficient in software but with poor distribution properties.
Implement rss_m2cpuid()to be used by netisr and other load
balancing code to look up the CPU on which an mbuf should be
processed.
(3) In the Ethernet link layer, allow netisr distribution using RSS as
a source of policy as an alternative to source ordering; continue
to default to direct dispatch (i.e., don't try and requeue packets
for processing on the 'right' CPU if they arrive in a directly
dispatchable context).
(4) Allow RSS to control tuning of connection groups in order to align
groups with RSS buckets. If a packet arrives on a protocol using
connection groups, and contains a suitable hardware-generated
hash, use that hash value to select the connection group for pcb
lookup for both IPv4 and IPv6. If no hardware-generated Toeplitz
hash is available, we fall back on regular PCB lookup risking
contention rather than pay the cost of Toeplitz in software --
this is a less scalable but, at my last measurement, faster
approach. As core counts go up, we may want to revise this
strategy despite CPU overhead.
Where device drivers suitably configure NICs, and connection groups /
RSS are enabled, this should avoid both lock and line contention during
connection lookup for TCP. This commit does not modify any device
drivers to tune device RSS configuration to the global RSS
configuration; patches are in circulation to do this for at least
Chelsio T3 and Intel 1G/10G drivers. Currently, the KPI for device
drivers is not particularly robust, nor aware of more advanced features
such as runtime reconfiguration/rebalancing. This will hopefully prove
a useful starting point for refinement.
No MFC is scheduled as we will first want to nail down a more mature
and maintainable KPI/KBI for device drivers.
Sponsored by: Juniper Networks (original work)
Sponsored by: EMC/Isilon (patch update and merge)
copied to userspace. Failing to do this would result in entries at the bottom
of the ktrdump output to be more recent than entries at the top.
With this change the timestamps are monotonically decreasing going from the
top to the bottom of the ktrdump output.
KTR buffer.
This happens when 'i' tries to wrap around from 0 to 'entries - 1'. Since 'i'
is a signed integer the modulo operation actually returns a negative number.
Fix this by computing the next index to use "by hand" instead of relying
on the modulo operator.
/cfg updated with the modified configuration files in /etc. I have
written an improved version with the following features:
* Recurses directories.
* Only requires file arguments the first time the file/directory is
* added to /cfg.
* Handles file deletions.
PR: 145962, 157533
Submitted by: Aragon Gouveia and Alex Bakhtin
lookup cookies to be less obscure.
No functional change.
Since r245115, cnt has not really been needed in tmpfs_dir_getdents(). Keep
it for the MPASS() for now though.
Sponsored by: EMC / Isilon Storage Division
MFC after: 2 weeks
The atf cp_test.sh sample file should have never been marked executable in
the first place because this file needs to be "built" first before being
usable.
The new suite.test.mk file contains all the logic needed to install test
programs under /usr/tests/ and to support Kyua as the run-time engine.
This file is included by default by bsd.test.mk so Makefiles do not need
to care about its existence.
Specific Makefiles can define NOT_FOR_TEST_SUITE to indicate that whatever
test programs they are building are not supposed to be installed under
/usr/tests/ nor run by Kyua. (The effect of passing this setting is that
suite.test.mk is simply not included.)
NOT_FOR_TEST_SUITE should never be used by Makefiles in the base system.
This functionality is provided so that third-parties can hook in their
own test code, with different semantics, if they wish. This was asked
for by sjg@.
Change {atf,plain,tap}.test.mk to be internal implementation details of
bsd.test.mk. Makefiles that build tests should now only include bsd.test.mk
and declaratively specify what they want to build, without worrying about
the internal implementation of the mk files.
The reason for this change is to permit building test programs of different
interfaces from a single directory, which is something I had a need for
while porting tests over from src/tools/regression/.
Additionally, this change makes it possible to perform some other requested
changes to bsd.test.mk in an easier manner. Coming soon.
