Commit Graph

19800 Commits

Author SHA1 Message Date
Konstantin Belousov
43806bc5b2 Update refcount(9).
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
2019-07-23 16:11:38 +00:00
Maxim Sobolev
634add3c8d Allow "update" option to be used in the fstab(5). Document possible use case.
Approved by:	mckusick
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D18586
2019-07-22 20:04:55 +00:00
Emmanuel Vadot
7d63f8b6df arm: Use -O2 instead of -O as optimization flag
When using Clang -O is equivalent to -O2, change it -O2 to make it
consistent with other platforms.

Reference: https://clang.llvm.org/docs/ClangCommandLineReference.html#optimization-level

Submitted by:	Daniel Engberg (daniel.engberg.lists@pyret.net)
Reviewed by:	emaste
Differential Revision:	https://reviews.freebsd.org/D21021
2019-07-22 10:17:59 +00:00
Alan Somers
fd6659d50b VOP_PATHCONF.9: correct the type of the retval argument
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
2019-07-22 04:14:53 +00:00
Konstantin Belousov
13ff4eb1fa Switch the rest of the refcount(9) functions to bool return type.
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
2019-07-21 20:16:48 +00:00
Rene Ladan
349c868322 Mark Felder has stepped down from portmgr and ports-secteam 2019-07-21 11:07:39 +00:00
Conrad Meyer
2826da432c motd: Generate from template to /var/run
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
2019-07-20 20:56:31 +00:00
Brooks Davis
c5d2d5a1ef Make setting mips endian and ABI less verbose.
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
2019-07-19 23:39:21 +00:00
Warner Losh
435e57a1b9 Remove RELEASE_CRUNCH in example
RELEASE_CRUNCH is no longer relevant.
2019-07-19 20:04:26 +00:00
Emmanuel Vadot
1d6d0a43ce pkgbase: move man pages from runtime-manual to runtime
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
2019-07-19 15:12:20 +00:00
Emmanuel Vadot
5c5ed48a03 bsd.confs.mk: Test the correct value for the destination package
Reviewed by:	bapt, gjb
Differential Revision:	https://reviews.freebsd.org/D20961
2019-07-19 15:11:32 +00:00
Bryan Drewery
000a2e7040 Rework some multi-output target dependency handling.
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
2019-07-19 00:15:25 +00:00
Warner Losh
c75bdc044d Provide new tunable hw.nvme.verbose_cmd_dump
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
2019-07-18 21:58:51 +00:00
Thomas Munro
513419f404 tzsetup: upgrade to zone1970.tab
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
2019-07-17 06:17:27 +00:00
Sean Bruno
fceeeec75f I add the ability to accept the default pin widget configuration to help
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
2019-07-17 04:13:46 +00:00
Kevin Lo
ba4ecad9f8 Add an MLINK for igb.
Discussed with:	lwhsu
2019-07-17 02:08:57 +00:00
Kevin Lo
4d302c1a86 Mention iflib(4). 2019-07-17 01:56:40 +00:00
Eric van Gyzen
9d3ecb7e62 Adds signal number format to kern.corefile
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
2019-07-16 15:51:09 +00:00
Konstantin Belousov
30b3018d48 Provide protection against starvation of the ll/sc loops when accessing userpace.
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
2019-07-12 18:43:24 +00:00
Konstantin Belousov
e1be41acf7 Style: avoid long lines by using .Fo instead of .Fn.
Sponsored by:	The FreeBSD Foundation
MFC after:	3 days
2019-07-12 18:39:41 +00:00
Hiroki Sato
2625e51956 Add support for RTL8156, 2.5GbE USB network controller, to if_cdce(4).
This chip can be found in Planex USB-LAN2500R.
2019-07-10 05:45:50 +00:00
Mark Johnston
eeacb3b02f Merge the vm_page hold and wire mechanisms.
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
2019-07-08 19:46:20 +00:00
Bryan Drewery
3b53f994ea Consider *clean targets as non-build targets as well.
MFC after:	2 weeks
Sponsored by:	DellEMC
2019-07-04 14:51:44 +00:00
Niclas Zeising
f1bb9412c2 pci(4): Use plural configuration registers
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
2019-07-02 17:48:27 +00:00
Li-Wen Hsu
9725e74c7b Fix VOP_PUTPAGES(9) in regards to the use of VM_PAGER_CLUSTER_OK
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
2019-06-29 14:55:53 +00:00
John Baldwin
82334850ea Add an external mbuf buffer type that holds multiple unmapped pages.
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
2019-06-29 00:48:33 +00:00
John Baldwin
773123546b Sync mbuf flags, types, and external buffer types with <sys/mbuf.h>.
Sponsored by:	Netflix
2019-06-28 19:49:47 +00:00
John Baldwin
7b29ab7e25 Use a tab after #define for EXT_* constants.
This matches other #define's in this manpage as well as <sys/mbuf.h>.

Sponsored by:	Netflix
2019-06-28 19:37:48 +00:00
Leandro Lupori
0a0163ebde Fix missing powerpc64 in _LLVM_TARGET_FILT
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
2019-06-28 15:49:14 +00:00
Hans Petter Selasky
131b2b7658 Implement API for draining EPOCH(9) callbacks.
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
2019-06-28 10:38:56 +00:00
Alan Somers
b13625b573 [skip ci] VOP_BMAP.9: fix diction in copyright header
MFC after:	2 weeks
MFC-With:	r349230
Sponsored by:	The FreeBSD Foundation
2019-06-27 23:37:09 +00:00
Andriy Gapon
061b38cdcc gpiobus: provide a new hint, pin_list
"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
2019-06-27 15:46:06 +00:00
Andriy Gapon
59c94acee9 gpio.4: document device hints common to all devices on gpiobus
"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
2019-06-26 07:38:31 +00:00
Andriy Gapon
50b4788ba1 fix up r349406, add missing .El
MFC after:	1 week
2019-06-26 07:08:51 +00:00
Andriy Gapon
8352171a58 owc.4: document how to set up the 1-wire bus on a device.hints system
MFC after:	1 week
2019-06-26 06:40:30 +00:00
Doug Moore
e70bb5c1a1 Document the KERN_PROTECTION_FAILURE return value from vm_map_protect().
Reviewed by: alc (earlier version)
Approved by: kib, markj (mentors)
Differential Revision: https://reviews.freebsd.org/D20751
2019-06-25 17:27:37 +00:00
Warner Losh
f5a95d9a07 Remove NAND and NANDFS support
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
2019-06-25 04:50:09 +00:00
Justin Hibbits
e861dab451 powerpc: Transition to Secure-PLT, like most other OSs (Toolchain part)
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
2019-06-25 02:35:22 +00:00
Sevan Janiyan
31d2b1cf99 Add DragonFly BSD 5.6.1 2019-06-22 22:43:40 +00:00
Sevan Janiyan
07fb2bcc24 Remove question mark from the link between NetBSD & Darwin.
As linked to in bug 26137 as a source
https://web.archive.org/web/20001012121507/http://www.opensource.apple.com/projects/darwin/faq.html
mentions:
"We already synchronize our code periodically with NetBSD for most of our user commands"
2019-06-22 22:34:59 +00:00
Warner Losh
05b626019a Add list of valid CPUTYPE flags for arm/arm64 to make.conf example
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
2019-06-22 16:54:23 +00:00
Doug Moore
a616b25342 Modify swapon(8) to invoke BIO_DELETE to trim swap devices, either if
'-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
2019-06-22 03:16:01 +00:00
Ian Lepore
1d90bbbb24 Do some general cleanup and light wordsmithing.
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.
2019-06-21 15:12:17 +00:00
Ian Lepore
7202a38099 Catch up with recent changes in pwmbus(9). The pwm(9) and pwmbus(9)
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/.
2019-06-21 14:46:43 +00:00
Kevin Lo
a3cea1de1a Correct function names. 2019-06-21 02:49:36 +00:00
Conrad Meyer
c363b16c63 sys: Remove DEV_RANDOM device option
Remove 'device random' from kernel configurations that reference it (most).
Replace perhaps mistaken 'nodevice random' in two MIPS configs with 'options
RANDOM_LOADABLE' instead.  Document removal in UPDATING; update NOTES and
random.4.

Reviewed by:	delphij, markm (previous version)
Approved by:	secteam(delphij)
Differential Revision:	https://reviews.freebsd.org/D19918
2019-06-21 00:16:30 +00:00
Ed Maste
cb53797473 Clarify vm_map_protect max_protection downgrade
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
2019-06-20 18:30:19 +00:00
Ed Maste
0cf197862d Clarify that vm_map_protect cannot upgrade max_protection
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
2019-06-20 18:19:09 +00:00
Alan Somers
67056e3d08 VOP_REVOKE(9): update locking requirements per r143495
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D20524
2019-06-20 16:36:20 +00:00
Alan Somers
8bd416a216 VOP_BMAP(9): fix typo in the copyright header
Reported by:	rgrimes
MFC after:	2 weeks
MFC-With:	349230
Sponsored by:	The FreeBSD Foundation
2019-06-20 14:40:36 +00:00