This adds safety net for the case of misconfigured NTB with too big
memory window, for which we may be unable to allocate a memory buffer,
which does not make much sense for the network interface. While there,
fix the code to really work with asymmetric window sizes setup.
This makes driver just print warning message on boot instead of hanging
if too large memory window is configured.
MFC after: 2 weeks
Sponsored by: iXsystems, Inc.
expression howmany(BBSIZE, PAGE_SIZE), where BBSIZE is the size of the
boot block area. That can be less than 2 if PAGE_SIZE is big.
swapon(8) has an option to trim (delete) all the blocks of a device at
startup. However, if the first of those blocks is a bsd label, then
trimming those blocks is destructive. Change swapon to leave the
first BBSIZE bytes untrimmed.
Update manual pages to reflect changes in how swapon and how it may be
used, espeically in association with savecore.
Reviewed by: alc
Approved by: markj (mentor)
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D21191
In r342974 jhibbits added support to build crtsavres.o. This was the
blocker for BSD_CRTBEGIN to be enabled there. As such enable this
option again.
Reviewed by: jhibbits
Sponsored by: DARPA, AFRL
The Zstd format bumps the CLOOP major number to 4 to avoid incompatibility
with older systems. Support in geom_uzip(4) is conditional on the ZSTDIO
kernel option, which is enabled in amd64 GENERIC, but not all in-tree
configurations.
mkuzip(8) was modified slightly to always initialize the nblocks + 1'th
offset in the CLOOP file format. Previously, it was only initialized in the
case where the final compressed block happened to be unaligned w.r.t.
DEV_BSIZE. The "Fake" last+1 block change in r298619 means that the final
compressed block's 'blen' was never correct unless the compressed uzip image
happened to be BSIZE-aligned. This happened in about 1 out of every 512
cases. The zlib and lzma decompressors are probably tolerant of extra trash
following the frame they were told to decode, but Zstd complains that the
input size is incorrect.
Correspondingly, geom_uzip(4) was modified slightly to avoid trashing the
nblocks + 1'th offset when it is known to be initialized to a good value.
This corrects the calculated final real cluster compressed length to match
that printed by mkuzip(8).
mkuzip(8) was refactored somewhat to reduce code duplication and increase
ease of adding other compression formats.
* Input block size validation was pulled out of individual compression
init routines into main().
* Init routines now validate a user-provided compression level or select
an algorithm-specific default, if none was provided.
* A new interface for calculating the maximal compressed size of an
incompressible input block was added for each driver. The generic code
uses it to validate against MAXPHYS as well as to allocate compression
result buffers in the generic code.
* Algorithm selection is now driven by a table lookup, to increase ease of
adding other formats in the future.
mkuzip(8) gained the ability to explicitly specify a compression level with
'-C'. The prior defaults -- 9 for zlib and 6 for lzma -- are maintained.
The new zstd default is 9, to match zlib.
Rather than select lzma or zlib with '-L' or its absense, respectively, a
new argument '-A <algorithm>' is provided to select 'zlib', 'lzma', or
'zstd'. '-L' is considered deprecated, but will probably never be removed.
All of the new features were documented in mkuzip.8; the page was also
cleaned up slightly.
Relnotes: yes
Follow-up on r322318 and r322319 and remove the deprecated modules.
Shift some now-unused kernel files into userspace utilities that incorporate
them. Remove references to removed GEOM classes in userspace utilities.
Reviewed by: imp (earlier version)
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D21249
rcmds were removed in r32435 and these three man pages can trivially
drop the references.
There's still a reference in pts.4 because it describes a mode
(TIOCPKT_NOSTOP), and only lists rlogin/rlogind as examples of programs
that use that mode. To update later.
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
More extensive changes to this page are certainly needed, but at least
remove references to binaries that no longer exist.
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
The driver was originally written with the name ads1115, but at the last
minute it got renamed to ads111x to reflect its support for many related
chips, but I forgot to update the manpage to match the renaming before
committing it all.
As suggested in:
https://wiki.freebsd.org/WhatsGoing/FreeBSD13
We will be dropping the snd_ds1 driver. The driver is known to be buggy
and no one has been working on it for years now.
Users of old Yamaha cards may have luck with the OSS drivers instead.
MFC after: 3 days
Diferential Revision: https://reviews.freebsd.org/D21138
It is part of -Wformat, which is enabled by -Wall. Empty format strings are
well defined and it is perfectly reasonable to expect them in a formatting
interface.
Similar to what was done for device_printfs in r347229.
Convert g_print_bio() to a thin shim around g_format_bio(), which acts on an
sbuf; documented in g_bio.9.
Reviewed by: markj
Discussed with: rlibby
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D21165
The API is used to gracefully terminate text line(s) with a single \n. If
the formatted buffer was empty or already ended in \n, it is unmodified.
Otherwise, a newline character is appended to it. The API, like other
sbuf-modifying routines, is only valid while the sbuf is not FINISHED.
Reviewed by: rlibby
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D21030
The goal is to avoid some kinds of low-memory deadlock when formatting
heap-allocated buffers.
Reviewed by: vangyzen
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D21015
with Communication Device Class Ethernet Emulation Model (CDC EEM).
The driver supports both the device, and host side operation; there
is a new USB template (#11) for the former.
This enables communication with virtual USB NIC provided by iLO 5,
as found in new HPE Proliant servers.
Reviewed by: hselasky
MFC after: 2 weeks
Relnotes: yes
Sponsored by: Hewlett Packard Enterprise
Don't mark nvme as broken on aarch64. It compiles, at least, and people are
testing it out. This only enables the userland parts of the nvme stack.
Submitted by: greg at unrelenting technologies
Differential Revision: https://reviews.freebsd.org/D21168
This commit imports the new fusefs driver. It raises the protocol level
from 7.8 to 7.23, fixes many bugs, adds a test suite for the driver, and
adds many new features. New features include:
* Optional kernel-side permissions checks (-o default_permissions)
* Implement VOP_MKNOD, VOP_BMAP, and VOP_ADVLOCK
* Allow interrupting FUSE operations
* Support named pipes and unix-domain sockets in fusefs file systems
* Forward UTIME_NOW during utimensat(2) to the daemon
* kqueue support for /dev/fuse
* Allow updating mounts with "mount -u"
* Allow exporting fusefs file systems over NFS
* Server-initiated invalidation of the name cache or data cache
* Respect RLIMIT_FSIZE
* Try to support servers as old as protocol 7.4
Performance enhancements include:
* Implement FUSE's FOPEN_KEEP_CACHE and FUSE_ASYNC_READ flags
* Cache file attributes
* Cache lookup entries, both positive and negative
* Server-selectable cache modes: writethrough, writeback, or uncached
* Write clustering
* Readahead
* Use counter(9) for statistical reporting
PR: 199934 216391 233783 234581 235773 235774 235775
PR: 236226 236231 236236 236291 236329 236381 236405
PR: 236327 236466 236472 236473 236474 236530 236557
PR: 236560 236844 237052 237181 237588 238565
Reviewed by: bcr (man pages)
Reviewed by: cem, ngie, rpokala, glebius, kib, bde, emaste (post-commit
review on project branch)
MFC after: 3 weeks
Relnotes: yes
Sponsored by: The FreeBSD Foundation
Pull Request: https://reviews.freebsd.org/D21110
Instances of the device can be configured using hints or FDT data.
Interfaces to reconfigure the chip and extract voltage measurements from
it are available via sysctl(8).
Having the full uname output can be useful on head even with
unmodified trees or trees that newvers.sh fails to recognize as
modified.
Reviewed by: emaste
Differential Revision: https://reviews.freebsd.org/D20895
Some warning flags are valid for C++ but not C. GCC 8 complains if you pass
such flags when building a C file. Using a separate variable for these
flags allows building both C and C++ files in the same directory (such as
the fusefs tests) under GCC.
Reviewed by: cem, emaste
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D21116
* Initialize the alpha parameter to a conservative value (like Linux)
* Improve handling of arithmetic.
* Improve man-page
Obtained from: Richard Scheffenegger
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D20549
r350315 created a Linux compatible copy_file_range(2) syscall.
It uses a VOP method called VOP_COPY_FILE_RANGE so that file systems,
such as the NFSv4.2 client can do file system specific copying.
For NFSv4.2, this allows the copying to be done locally on the NFS server,
avoiding transferring the data across the wire twice.
This is a new man page (content changed).
Reviewed by: kib, asomers
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D20584
Now that we have a way to obtain entropy in capability mode
(getrandom(2)), libcap_random is obsolete. Remove it.
Bump __FreeBSD_version in case anything happens to use it, though I've
found no consumers.
Reviewed by: delphij, emaste, oshogbo
Relnotes: yes
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D21033
This will be used to gate the fusefs tests. It's a partial merge of r348281
from projects/fuse2.
Reviewed by: kib, emaste
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D21044
of the TCP TS offset from taking the IP addresses and the TCP port
numbers into account to a version just taking only the IP addresses
into account. This works around broken middleboxes or endpoints.
The default is to keep the behaviour, which is also the behaviour
recommended in RFC 7323.
Reported by: devgs@ukr.net
Reviewed by: rrs@
MFC after: 2 weeks
Sponsored by: Netflix, Inc.
Differential Revision: https://reviews.freebsd.org/D20980
Describe missed functions.
Give some hint about refcount_release(9) memory ordering guarantees.
Reviewed by: markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D21020
It was changed from int to register_t in r22521 and from register_t to long
in r328099, but the man page wasn't updated either time.
MFC after: 2 weeks
There are some explicit comparisions of refcount_release(9) result
with 0/1, which are fine.
Reviewed by: markj, mjg
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D21014
Update login(1), its manual pages, similar utilities, and motd.5 to refer to
the new location.
Suggested by: delphij@ (re: r349256)
Reviewed by: bcr (manpages), delphij
Differential Revision: https://reviews.freebsd.org/D20721
Allow ABI to be over ridden to allow (with other changes) programs to be
built targeting ABIs other than the default. This is used in CheriBSD.
Reviewed by: imp
Obtained from: CheriBSD
MFC after: 1 week
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D21001
We don't split the other man pages in their own package so do the same for runtime.
Reviewed by: bapt, gjb
Differential Revision: https://reviews.freebsd.org/D20962
This reworks my last commit in r301285 to more closely match what was in
r241298 (but reverted in r294878).
This is addressing "missing .meta file" rebuilds but also ensuring that
files are always generated when needed in each case.
Note that this is not a complete rework of the problem areas identified
in r301285 as most are "good enough" right now as the new pattern
is too verbose. It's only worth making this current change where headers
may be generated in the INCS list; where missing .meta file rebuilds are
spotted.
--- Technical details follow ---
Several attempts to deal with this problem of multi-output targets, with and
without META MODE, were explained in r241298, r294878, and r301285.
The general problem is with multi-output targets such as:
foo.c foo.h:
touch foo.c foo.h
foo.c foo.h:
touch foo.c
touch foo.h
foo.c foo.h: foo.in
./generator ${.ALLSRC}
This pattern is problematic in jobs mode as both files end up being
built concurrently and leads to races. With META MODE it is worse
as both targets end up rebuilding if they lack a .meta file. So the
generator is force built twice even though it is only needed once.
There are also problems in that 'make foo.h' may be ran before 'make foo.c';
The order of make generating the targets is not guaranteed.
An older attempted workaround to this (discussed in r294878) was:
foo.h: foo.c
foo.c: foo.in
./generator ${.ALLSRC}
This appears fine except that if foo.h is missing and foo.c exists then
foo.h will never be regenerated. This pattern is close to the solution
in this commit though:
foo.h: foo.c .NOMETA
.if !exists(foo.h)
foo.c: .PHONY .META
.endif
foo.c: foo.in
./generator ${.ALLSRC}
There's 2 differences here:
1. foo.h will never expect to have a .meta file since the foo.c target
will generate both and own the .meta file.
2. If foo.h does not exist then it needs to force foo.c to be rebuilt
with .PHONY. That normally disables META MODE though so .META is
given to tell bmake we do really expect a .meta file.
This pattern cannot work with implicit suffix rules since the .c and .h files
may be generated at different times (buildincludes vs depend/all).
Sponsored by: Dell EMC
MFC after: 2 weeks
The nvme drive dumps only the most relevant details about a command when it
fails. However, there are times this is not sufficient (such as debugging weird
issues for a new drive with a vendor). Setting hw.nvme.verbose_cmd_dump=1
in loader.conf will enable more complete debugging information about each
command that fails.
Reviewed by: rpokala
Sponsored by: Netflix
Differential Version: https://reviews.freebsd.org/D20988
zone.tab is deprecated. Install zone1970.tab alongside it, and use it
for tzsetup(8). This is also useful for other applications that need
the modern better maintained file.
Reviewed by: philip
Approved by: allanjude (mentor)
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D20646
with various laptops using hdaa(4) sound devices. We don't seem to know
the "correct" configurations for these devices and the defaults are far
superiour, e.g. they work if you don't nuke the default configs.
PR: 200526
Differential Revision: https://reviews.freebsd.org/D17772
Add format capability to core file names to include signal
that generated the core. This can help various validation workflows
where all cores should not be considered equally (SIGQUIT is often
intentional and not an error unlike SIGSEGV or SIGBUS)
Submitted by: David Leimbach (leimy2k@gmail.com)
Reviewed by: markj
MFC after: 1 week
Relnotes: sysctl kern.corefile can now include the signal number
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D20970
Casueword(9) on ll/sc architectures must be prepared for userspace
constantly modifying the same cache line as containing the CAS word,
and not loop infinitely. Otherwise, rogue userspace livelocks the
kernel.
To fix the issue, change casueword(9) interface to return new value 1
indicating that either comparision or store failed, instead of relying
on the oldval == *oldvalp comparison. The primitive no longer retries
the operation if it failed spuriously. Modify callers of
casueword(9), all in kern_umtx.c, to handle retries, and react to
stops and requests to terminate between retries.
On x86, despite cmpxchg should not return spurious failures, we can
take advantage of the new interface and just return PSL.ZF.
Reviewed by: andrew (arm64, previous version), markj
Tested by: pho
Reported by: https://xenbits.xen.org/xsa/advisory-295.txt
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
Differential revision: https://reviews.freebsd.org/D20772
The hold_count and wire_count fields of struct vm_page are separate
reference counters with similar semantics. The remaining essential
differences are that holds are not counted as a reference with respect
to LRU, and holds have an implicit free-on-last unhold semantic whereas
vm_page_unwire() callers must explicitly determine whether to free the
page once the last reference to the page is released.
This change removes the KPIs which directly manipulate hold_count.
Functions such as vm_fault_quick_hold_pages() now return wired pages
instead. Since r328977 the overhead of maintaining LRU for wired pages
is lower, and in many cases vm_fault_quick_hold_pages() callers would
swap holds for wirings on the returned pages anyway, so with this change
we remove a number of page lock acquisitions.
No functional change is intended. __FreeBSD_version is bumped.
Reviewed by: alc, kib
Discussed with: jeff
Discussed with: jhb, np (cxgbe)
Tested by: pho (previous version)
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D19247
Change to use registers instead of register, as it is customary to use
plural when talking about PCI registers.
This was missed in r349150.
MFC after: 3 days
Submitted by: Ka Ho Ng <khng300 at gmail.com>
Reviewed by: mckusick
MFC after: 3 days
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D20695
Unmapped mbufs allow sendfile to carry multiple pages of data in a
single mbuf, without mapping those pages. It is a requirement for
Netflix's in-kernel TLS, and provides a 5-10% CPU savings on heavy web
serving workloads when used by sendfile, due to effectively
compressing socket buffers by an order of magnitude, and hence
reducing cache misses.
For this new external mbuf buffer type (EXT_PGS), the ext_buf pointer
now points to a struct mbuf_ext_pgs structure instead of a data
buffer. This structure contains an array of physical addresses (this
reduces cache misses compared to an earlier version that stored an
array of vm_page_t pointers). It also stores additional fields needed
for in-kernel TLS such as the TLS header and trailer data that are
currently unused. To more easily detect these mbufs, the M_NOMAP flag
is set in m_flags in addition to M_EXT.
Various functions like m_copydata() have been updated to safely access
packet contents (using uiomove_fromphys()), to make things like BPF
safe.
NIC drivers advertise support for unmapped mbufs on transmit via a new
IFCAP_NOMAP capability. This capability can be toggled via the new
'nomap' and '-nomap' ifconfig(8) commands. For NIC drivers that only
transmit packet contents via DMA and use bus_dma, adding the
capability to if_capabilities and if_capenable should be all that is
required.
If a NIC does not support unmapped mbufs, they are converted to a
chain of mapped mbufs (using sf_bufs to provide the mapping) in
ip_output or ip6_output. If an unmapped mbuf requires software
checksums, it is also converted to a chain of mapped mbufs before
computing the checksum.
Submitted by: gallatin (earlier version)
Reviewed by: gallatin, hselasky, rrs
Discussed with: ae, kp (firewalls)
Relnotes: yes
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D20616
This change was originally in D20378. Making it in a new diff since it's a
bugfix.
Submitted by: alfredo.junior_eldorado.org.br
Reviewed by: emaste, luporl
Differential Revision: https://reviews.freebsd.org/D20756
The epoch_drain_callbacks() function is used to drain all pending
callbacks which have been invoked by prior epoch_call() function calls
on the same epoch. This function is useful when there are shared
memory structure(s) referred to by the epoch callback(s) which are not
refcounted and are rarely freed. The typical place for calling this
function is right before freeing or invalidating the shared
resource(s) used by the epoch callback(s). This function can sleep and
is not optimized for performance.
Differential Revision: https://reviews.freebsd.org/D20109
MFC after: 1 week
Sponsored by: Mellanox Technologies
Previously fusefs would never recycle vnodes. After VOP_INACTIVE, they'd
linger around until unmount or the vnlru reclaimed them. This commit
essentially actives and inlines the old reclaim_revoked sysctl, and fixes
some issues dealing with the attribute cache and multiply linked files.
Sponsored by: The FreeBSD Foundation
counter(9) is more performant than using atomic instructions to update
sysctls that just report statistics to userland.
Sponsored by: The FreeBSD Foundation
"pin_list" allows to specify child pins as a list of pin numbers.
Existing hint "pins" serves the same purpose but with a 32-bit wide bit
mask. One problem with that is that a controller can have more than 32
pins. One example is amdgpio. Also, a list of numbers is a little bit
more human friendly than a matching bit mask. As a side note, it seems
that in FDT pins are typically specified by their numbers as well.
This commit also adds accessors for instance variables (IVARs) that
define the child pins. My primary goal is to allow a child to be
configured programmatically rather than via hints (assuming that FDT is
not supported on a platform). Also, while a child should not care about
specific pin numbers that are allocated to it, it could be interested in
how many were actually assigned to it.
While there, I removed "flags" instance variable. It was unused.
Reviewed by: mizhka
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D20459
As of protocol 7.23, fuse file systems can specify their cache behavior on a
per-mountpoint basis. If they set FUSE_WRITEBACK_CACHE in
fuse_init_out.flags, then they'll get the writeback cache. If not, then
they'll get the writethrough cache. If they set FOPEN_DIRECT_IO in every
FUSE_OPEN response, then they'll get no cache at all.
The old vfs.fusefs.data_cache_mode sysctl is ignored for servers that use
protocol 7.23 or later. However, it's retained for older servers,
especially for those running in jails that lack access to the new protocol.
This commit also fixes two other minor test bugs:
* WriteCluster:SetUp was using an uninitialized variable.
* Read.direct_io_pread wasn't verifying that the cache was actually
bypassed.
Sponsored by: The FreeBSD Foundation
"at" keyword is documented in device.hints(5) for all buses, but it does
hurt to add another reference to it.
"pins" keyword is specific to gpiobus.
At least these two hints should be configured for any gpiobus device on
a hints based system.
MFC after: 10 days
NANDFS has been broken for years. Remove it. The NAND drivers that
remain are for ancient parts that are no longer relevant. They are
polled, have terrible performance and just for ancient arm
hardware. NAND parts have evolved significantly from this early work
and little to none of it would be relevant should someone need to
update to support raw nand. This code has been off by default for
years and has violated the vnode protocol leading to panics since it
was committed.
Numerous posts to arch@ and other locations have found no actual users
for this software.
Relnotes: Yes
No Objection From: arch@
Differential Revision: https://reviews.freebsd.org/D20745
Summary:
Toolchain follow-up to r349350. LLVM patches will be submitted upstream for
9.0 as well.
The bsd.cpu.mk change is required because GNU ld assumes BSS-PLT if it
cannot determine for certain that it needs Secure-PLT, and some binaries do
not compile in such a way to make it know to use Secure-PLT.
Reviewed By: nwhitehorn, bdragon, pfg
Differential Revision: https://reviews.freebsd.org/D20598
Summary:
Adds a list of valid CPUTYPE flags for arm and arm64 architectures
List taken from share/mk/bsd.cpu.mk
Submitted by: Daniel Engberg
Reviewed By: imp
Differential Revision: https://reviews.freebsd.org/D20315
'-E' appears on the swapon command line, or if "trimonce" appears as
an fstab option.
Discussed at: BSDCAN
Tested by: markj
Reviewed by: markj
Approved by: markj (mentor)
Differential Revision:https://reviews.freebsd.org/D20599
Sort methods alphabetically. Wrap long lines. Start sentences on a new
line. Remove contractions (not because it's a good idea, just to silence
igor). Add some explanation of the units for the period and duty arguments
and the convention for channel numbers.
interfaces were unified into pwmbus(9), and the PWMBUS_CHANNEL_MAX method
was renamed PWMBUS_CHANNEL_COUNT. The pwmbus_attach_bus() function just
went away completely. Also, fix a few typos such as s/is/if/.
As reported in review D20709 by brooks calling vm_map_protect to set a
new max_protection value downgrades existing mappings if necessary (as
opposed to returning an error).
Reported by: brooks
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
It's implied by the man page's RETURN VALUES section, but be explicit in
the description that vm_map_protect can not set new protection bits that
are already in each entry's max_protection.
Reviewed by: brooks
MFC After: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D20709
wakeup_one() and underlying sleepq_signal() spend additional time trying
to be fair, waking thread with highest priority, sleeping longest time.
But in case of taskqueue there are many absolutely identical threads, and
any fairness between them is quite pointless. It makes even worse, since
round-robin wakeups not only make previous CPU affinity in scheduler quite
useless, but also hide from user chance to see CPU bottlenecks, when
sequential workload with one request at a time looks evenly distributed
between multiple threads.
This change adds new SLEEPQ_UNFAIR flag to sleepq_signal(), making it wakeup
thread that went to sleep last, but no longer in context switch (to avoid
immediate spinning on the thread lock). On top of that new wakeup_any()
function is added, equivalent to wakeup_one(), but setting the flag.
On top of that taskqueue(9) is switchied to wakeup_any() to wakeup its
threads.
As result, on 72-core Xeon v4 machine sequential ZFS write to 12 ZVOLs
with 16KB block size spend 34% less time in wakeup_any() and descendants
then it was spending in wakeup_one(), and total write throughput increased
by ~10% with the same as before CPU usage.
Reviewed by: markj, mmacy
MFC after: 2 weeks
Sponsored by: iXsystems, Inc.
Differential Revision: https://reviews.freebsd.org/D20669
This is still targeting bin/sh cyclic dependency issues. Only apply
guessed dependencies that are explicitly set for an object (which
gnu/lib/cc/cc_tools needs) and if no custom target exists with its
own dependencies.
This was manifesting as a missing yacc.h in usr.bin/mkesdb_static when
built without -j (or -B). No actual yacc.h dependency ordering was
defined but with -j it got lucky and built fine.
Before r349061 the behavior was different for META_MODE but that logic
difference isn't needed.
X-MFC-With: r349061
Sponsored by: DellEMC
NetBSD 7.0 was a separate branch, subsequent 8.x releases did not emerge from
this branch.
Clean up minor visual nits, centre OpenBSD listing on the B, DragonFly
listings on the y.
Add missing words after PCI in the description of the PCIOCWRITE and
PCIOCATTACHED ioctls.
Use singular in PCIOCREAD, we only read one register at the time.
Reviewed by: bcr, bjk, rgrimes, cem
MFC after: 2 weeks
X-MFC-with: r349133
Differential Revision: https://reviews.freebsd.org/D20671
Document the PCIOCATTACHED ioctl(2) in the pci(4) manual.
PCIOCATTACHED is used to query if a driver has attached to a PCI.
Reviewed by: bcr, imp
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D20652
Default to tracking .depend.* for OBJS rather than SRCS.
This helps cover some special case builds like gnu/lib/csu which
do more of a PROGS-like thing with bsd.prog.mk.
It is possible this causes out-of-tree Makefiles to have problems if they use
this pattern:
foo.o: foo.c
${CC} -o ${.TARGET} ${.ALLSRC}
This may cause multiple source files to be compiled due to finding the
'foo.o: foo.c' dependency both in the Makefile at the .depend file. Or
it may try compiling headers. This can be worked around by either of these:
foo.o: foo.c
${CC} -o ${.TARGET} ${.ALLSRC:N*.h:[1]}
Or
foo.o: foo.c
${CC} -o ${.TARGET} ${.CURDIR}/foo.c
In the latter case the ${.CURDIR} may need to be a different path. The
first case covers automatically using .PATH.
Sponsored by: DellEMC
If a meta mode change is triggered but then the build fails then the
next build will not retrigger meta mode. This only prevented by
removing the target on rebuild or on the failure to rebuild.
Sponsored by: DellEMC
This is in the case of not having any .depend.foo.o yet. Don't force add *.h
as a dependency for those. They are built in beforebuild already when in
SRCS/DPSRCS.
This change allows custom rules, like in bin/sh/Makefile for mksyntax, to not
have cyclic dependency problems when connected to the .depend.* handling.
This is purposely not copied to sys/conf/kern.post.mk as it handles
generating headers slightly differently.
MFC after: 2 weeks
Sponsored by: DellEMC
asserted. Some development boards for example will reset on DTR,
and some radio interfaces will transmit on RTS.
This patch allows "stty -f /dev/ttyu9.init -rtsdtr" to prevent
RTS and DTR from being asserted on open(), allowing these devices
to be used without problems.
Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D20031
New sysctl/tunables can now set the interval (in seconds) between
rate-limited crypto warnings. The new sysctls are:
- kern.cryptodev_warn_interval for /dev/crypto
- net.inet.ipsec.crypto_warn_interval for IPsec
- kern.kgssapi_warn_interval for KGSSAPI
Reviewed by: cem
MFC after: 1 month
Relnotes: yes
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D20555
This documents the behavior of sysctl_msec_to_ticks and
SYSCTL_{ADD,}_SBINTIME_[UM]SEC.
Reviewed by: cem
MFC after: 1 week
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D20596
Consensus seems to be that eliding blank lines for functions with no local
variables is acceptable. Codify that explicitly in the style document.
Reported by: jhb
Reviewed by: delphij, imp, vangyzen (earlier version); rgrimes
With feedback from: kib
Differential Revision: https://reviews.freebsd.org/D20448
ccr depends on symbols exported by the cxgbe driver as well as having
a runtime dependency. While the runtime depenency was noted in the
manpage already, the compile-time dependency wasn't as clear.
PR: 238265
MFC after: 3 days
Sponsored by: Chelsio Communications
Other frameworks, such as googletest, should be added there as well,
once they become viable. For now let's keep it simple.
Discussed with: ngie, emaste
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D20124
