Commit Graph

191210 Commits

Author SHA1 Message Date
Pietro Cerutti
2d2187338e Unbreak the build by re-enabling exceptions.
Disabling them breaks build on archs using GCC. The problem is at line 156 of
bits/basic_ios.h:

	if (this->exceptions() & __state)
		__throw_exception_again;

With exceptions disabled __throw_exception_again is defined as

#define __throw_exception_again

at line 45 of exception_defines.h and the code results in an empty loop body,
which fails because of -Werror.

Approved by:	cognet
2014-07-14 12:24:38 +00:00
Konstantin Belousov
4cda7f7ece Rework the tmpfs unmount.
- Suspend filesystem for unmount.  This prevents new tmpfs nodes from
  instantiating, and also ensures that only unmount thread can destroy
  nodes.

- Do not start tmpfs node deletion until all vnodes are reclaimed,
  which guarantees that no thread can access tmpfs data.  For this,
  call vflush() in the loop, until the mnt_nvnodelistsize is non-zero.
  Note that after mnt_nvnodelistsize becomes 0, insmntque() blocks
  insertion of a vnode germ into the mount list of vnodes.

- Fail node allocation when the filesystem is being unmounted.  This
  is race-free due to the vflush() call in loop.  This is mostly
  cosmetic, avoiding some more work which might be done until
  suspension in unmount is started.

Note that there is currently no way to prevent new vnode instantiation
from readers during the unmount.  Due to this, forced unmount might
live-lock if vflush() loop cannot get to the zero vnode count due to
races with readers.  The unmount would proceed after the load is
lifted.

Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
2014-07-14 09:52:33 +00:00
Konstantin Belousov
b5b3326191 Change forgotten in r268615. Set the OBJ_TMPFS_NODE flag for
vm_object of VREG tmpfs node.

Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
2014-07-14 09:35:14 +00:00
Konstantin Belousov
f08f7dca40 The OBJ_TMPFS flag of vm_object means that there is unreclaimed tmpfs
vnode for the tmpfs node owning this object.  The flag is currently
used for two purposes.  First, it allows to correctly handle VV_TEXT
for tmpfs vnode when the ref count on the object is decremented to 1,
similar to vnode_pager_dealloc() for regular filesystems.  Second, it
prevents some operations, which are done on OBJT_SWAP vm objects
backing user anonymous memory, but are incorrect for the object owned
by tmpfs node.

The second kind of use of the OBJ_TMPFS flag is incorrect, since the
vnode might be reclaimed, which clears the flag, but vm object
operations must still be disallowed.

Introduce one more flag, OBJ_TMPFS_NODE, which is permanently set on
the object for VREG tmpfs node, and used instead of OBJ_TMPFS to test
whether vm object collapse and similar actions should be disabled.

Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
2014-07-14 09:30:37 +00:00
Konstantin Belousov
eb2c06b63a Use tmpfs_vn_get_ino_gen() to handle the races with reclaim in tmpfs
dotdot lookup.

Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
2014-07-14 09:16:55 +00:00
Konstantin Belousov
fd63693dcf Style. Add comment about lock mode.
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
2014-07-14 09:13:56 +00:00
Konstantin Belousov
895b3782c6 Extract the code to put a filesystem into the suspended state (at the
unmount time) in the helper vfs_write_suspend_umnt().  Use it instead
of two inline copies in FFS.

Fix the bug in the FFS unmount, when suspension failed, the ufs
extattrs were not reinitialized.

Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
2014-07-14 09:10:00 +00:00
Konstantin Belousov
7a41bc2f41 In tmpfs_alloc_file(), code after the 'out' label does only 'return
error;'.  Replace goto's with the return.

Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
2014-07-14 09:02:40 +00:00
Konstantin Belousov
d2ca06cdd2 Add convenience macro to assert tmpfs node lock.
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
2014-07-14 08:59:25 +00:00
Konstantin Belousov
55781cb922 Add some assertions for the code handling vm_object for tmpfs vnode.
In particular, vnode must be exclusively locked when the tmpfs vnode
and object are divorced.  When the vnode is opened, the object must be
still alive, since only live vnode can be opened, and the tmpfs node
owns a reference on the object.

Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
2014-07-14 08:55:02 +00:00
Konstantin Belousov
706f80801d The tmpfs_link() must not dereference the filesystem-specific data for
a vnode until it is verified that the vnode indeed belongs to tmpfs
mount.  Otherwise, it might access random memory, at least in the
debug kernel.

Reported and tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
2014-07-14 08:45:29 +00:00
Konstantin Belousov
57ef02ff0f In kern_linkat(), avoid passing doomed vnode to the VOP.
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
2014-07-14 08:41:13 +00:00
Konstantin Belousov
a69452162a Generalize vn_get_ino() to allow filesystems to use custom vnode
producer, instead of hard-coding VFS_VGET().  New function, which
takes callback, is called vn_get_ino_gen(), standard callback for
vn_get_ino() is provided.

Convert inline copies of vn_get_ino() in msdosfs and cd9660 into the
uses of vn_get_ino_gen().

Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
2014-07-14 08:34:54 +00:00
Konstantin Belousov
fca015d301 Remove code separator lines which do not conform to style(9).
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
2014-07-14 08:17:11 +00:00
Kevin Lo
cb7df69b7e Make bind(2) and connect(2) return EAFNOSUPPORT for AF_UNIX on wrong
address family.

See https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=191586 for the
original discussion.

Reviewed by:	terry
2014-07-14 06:00:01 +00:00
Mark Johnston
291624fdf6 Invoke the DTrace trap handler before calling trap() on amd64. This matches
the upstream implementation and helps ensure that a trap induced by tracing
fbt::trap:entry is handled without recursively generating another trap.

This makes it possible to run most (but not all) of the DTrace tests under
common/safety/ without triggering a kernel panic.

Submitted by:	Anton Rang <anton.rang@isilon.com> (original version)
Phabric:	D95
2014-07-14 04:38:17 +00:00
Julio Merino
1dd381bf67 Explicitly disable the build of tests when building bmake.
During "make buildworld", building bmake is (one of) the very first steps
and we should not be building any of its tests.  Conceptually, this is the
right thing to do 1) for build simplicity reasons and 2) because there is
no need to build any tests this early on.

In practice, this fixes tinderbox builds of CURRENT from 9.x when MK_TESTS
is enabled.  This is because bsd.test.mk needs some modern bmake features
not present in 9.x (:tW) and tinderbox is forcing the build to use the
CURRENT share/mk files from the very beginning (see r266617).  By skipping
the build of the tests when still using the host make, we omit the problem.
Arguably, what tinderbox is doing is wrong and needs to be addressed, but
that is a separate issue.
2014-07-13 23:53:41 +00:00
Steve Kargl
d781108453 * Update the comments to agree with commit r226595.
* While here, fix a nearby typo in a comment.
2014-07-13 23:10:39 +00:00
Alan Cox
f26bcf99e0 Eliminate an unused variable. Refresh two comments. 2014-07-13 17:52:07 +00:00
Steve Kargl
3b5e0d0f96 * Makefile:
. Add s_erfl.c to building libm.
  . Add MLINKS for erfl.3 and erfcl.3.

* Symbol.map:
  . Move erfl and erfcl to their proper location.

* ld128/s_erfl.c:
  . Implementations of erfl and erfcl in the IEEE 754 128-bit format.

* ld80/s_erfl.c:
  . Implementations of erfl and erfcl in the Intel 80-bit format.

* man/erf.3:
  . Document the new functions.
  . While here, remove an incomplete sentence.

* src/imprecise.c:
  . Remove the stupidity of mapping erfl and erfcl to erf and erfc.

* src/math.h:
  . Move the declarations of erfl and erfcl to their proper place.

* src/s_erf.c:
  . For architectures where double and long double are the same
    floating point format, use weak references to map erfl to
    erf and ercl to erfc.

Reviewed by:	bde (many earlier versions)
2014-07-13 17:05:03 +00:00
Alan Cox
a844c68fc2 Implement pmap_unwire(). See r268327 for the motivation behind this change. 2014-07-13 16:27:57 +00:00
Steve Kargl
7e1c60ae94 * Use 9 digits instead of 11 digits in efx and efx8.
* Update the domain and range of comments for the polynomial
  approximations, including using the the correct variable names
  (e.g., pp(x) instead of p(x)).

* Use hex values of the form 0x3e0375d4 instead of 0x1.06eba8p-3,
  which was obtained from printf("%.6a").

* In the domain [0.84375, 1.25], qa(x) can be reduced from a 4th
  order polynomial to 3rd order.

* In the domain [1.25,1/0.35], sa(x) can be reduced from a 4th
  order polynomial to 3rd order.

* In the domain [1/0.35, 11], the 4th order polynomials rb(x) and
  sb(x) can be reduced to 2nd and 3rd order, respectively.
2014-07-13 16:24:16 +00:00
Steve Kargl
c9cb48ff4d * Update the comments that refer to erf[c](nan) and erf[c](+-inf)
to use erf[c]f.
2014-07-13 16:05:33 +00:00
Steve Kargl
019ffb5df8 * Use the volatile qualifier for 'tiny' to prevent compilers
from erronously constant folding expressions of the form
  '1 - tiny'.  This allows erf[f](x) to raise INEXACT.

* Use 0.5, 1, and 2, which are exactly representable in radix-2
  floating point formats.  This reduces diffs between s_erf[fl].c.

* While here, add a comment about efx and efx8.
2014-07-13 15:45:45 +00:00
Steve Kargl
f2c0cd942c Whitespace. 2014-07-13 15:15:51 +00:00
Sergey Kandaurov
2ddbae33f1 Unbreak with gcc.
I'm tired to see tinderbox spamming.  Feel free to fix it your way.
2014-07-13 10:38:01 +00:00
Mark Johnston
05929f8bd0 Add a headphone redirection quirk for the Lenovo G580.
MFC after:	1 week
2014-07-13 10:31:29 +00:00
Hans Petter Selasky
817a8cac2e Turn off blinking device leds at attach.
MFC after:	3 days
PR:		183735
2014-07-13 09:34:59 +00:00
Hans Petter Selasky
948d799e27 Fix performance problems with AXGE network adapter in RX direction:
- Remove 4 extra bytes from the ethernet payload.
- The maximum RX buffer was incorrectly set. Increase it to 64K for
now, until the exact limit is understood.
- Enable hardware checksumming again.
- Make hardware data structure packed.

MFC after:	3 days
2014-07-13 07:39:28 +00:00
Alexander Motin
4d877c4148 Merge several equal serialization indexes. 2014-07-13 06:01:23 +00:00
Jilles Tjoelker
7b9104c0a9 sh: Correctly handle positional parameters beyond INT_MAX on 64-bit systems.
Currently, there can be no more than INT_MAX positional parameters. Make
sure to treat all higher ones as unset to avoid incorrect results and
crashes.

On 64-bit systems, our atoi() takes the low 32 bits of the strtol() and
sign-extends them.

On 32-bit systems, the call to atoi() returned INT_MAX for too high values
and there is not enough address space for so many positional parameters, so
there was no issue.
2014-07-12 21:54:11 +00:00
Rui Paulo
3551142804 Add bsd.dtrace.mk to obsolete files.
MFC after:	3 weeks.
2014-07-12 21:24:28 +00:00
Mateusz Guzik
8bedd5d782 Clear nonblock and async on devctl close instaed of open.
This is a purely cosmetic change.
2014-07-12 15:35:04 +00:00
Pedro F. Giffuni
0c02957978 strfmon: reduce unnecessary snprintf.
No need for the snprintf/asprintf dance; use fixed width formats.

Obtained from:	NetBSD (CVS rev. 1.8)
MFC after:	1 week
2014-07-12 15:19:30 +00:00
Jilles Tjoelker
5ddabb8348 sh: Consistently treat ${01} like $1.
Leading zeroes were ignored when checking whether a positional parameter is
set, but not when expanding its value. Ignore leading zeroes in any case.
2014-07-12 10:27:30 +00:00
Jeremie Le Hen
0c7b5530d6 Make the description of the "no_prefer_iface" flag easier to understand.
Reviewed by:	Silence on -net@ and from ume@
2014-07-12 10:18:33 +00:00
David Chisnall
f2b893a0c6 Turn off exceptions and rtti when building the c++ version of users.
Neither is used in the program and this saves us 10KB (around 40%) in binary
size.
2014-07-12 07:47:50 +00:00
Rui Paulo
72a442fa29 Remove bsd.dtrace.mk.
MFC after:	3 weeks
2014-07-12 07:46:18 +00:00
Rui Paulo
efce3748f3 Revert r268543.
We should probably fix sys/gpio.h instead.
2014-07-12 06:23:42 +00:00
Adrian Chadd
c7c0d94874 Add IPv6 flowid, bindmulti and RSS awareness. 2014-07-12 05:46:33 +00:00
Adrian Chadd
a8a2d8003a Add INP_RSS_BUCKET_SET awareness for IPv6 pcbgroup entries.
This ensures that a listen socket with INP_RSS_BUCKET_SET set will use
the pre-determined PCBGROUP rather than what the hashing path chooses.
2014-07-12 05:45:53 +00:00
Adrian Chadd
6e4405cee1 Add the IPv6 versions of the multi-bind, hash/hash type and RSS options. 2014-07-12 05:44:16 +00:00
Adrian Chadd
e989b65f79 Add RSS hashing awareness for IPv6 and TCP IPv6 hash types. 2014-07-12 05:43:43 +00:00
Adrian Chadd
76e63232b6 Add some hash types for UDP RSS for both IPv4 and IPv6.
Nothing is yet using this but I'd like to reserve these values.
2014-07-12 05:42:57 +00:00
Adrian Chadd
d5bb8bd315 Expose in_pcbbind_check_bindmulti() so the upcoming IPv6 RSS changes
can be made to use it.
2014-07-12 05:40:13 +00:00
Rui Paulo
d8b631554e Optimisation: replace ${_D:R} with just ${_D}.
MFC after:	3 weeks
2014-07-12 01:06:29 +00:00
Rui Paulo
bd08cbb81a Move iic.h to sys/ so that it's automatically installed in /usr/include/sys.
This lets us call iic(4) ioctls without needing the kernel source code
and follows the same model of GPIO.

MFC after:	3 weeks
2014-07-12 01:04:10 +00:00
Rui Paulo
0f912c5a5d Remove _DTRACE_VERSION from sdt.h. It will now come from the command line
(bsd.dep.mk).

MFC after:	3 weeks
2014-07-12 00:57:00 +00:00
Rui Paulo
ff0f36e773 Automatically build and link DTrace USDT probes.
This completely replaces bsd.dtrace.mk which never worked reliably.

MFC after:	3 weeks
2014-07-12 00:54:34 +00:00
Nathan Whitehorn
963ae465d5 Allow up to 512K for boot code on GPT with BIOS. As pmbr.s says in a comment,
"545K should be enough for any boot code". This rounds down slightly.

Reported by:	Matthew Fuller
MFC after:	2 weeks
2014-07-11 23:41:56 +00:00