Commit Graph

57455 Commits

Author SHA1 Message Date
Gleb Smirnoff
61fb9bd80c - In pipe() return the error returned by pipe_create(), rather then
hardcoded ENFILES, which is incorrect. pipe_create() can fail due
  to ENOMEM.
- Update manual page, describing ENOMEM return code.

Reviewed by:	arch
2006-01-30 08:25:04 +00:00
Jeff Roberson
3b77d80cdd - Remove a stale comment. This function was rewritten to be SMP safe some
time ago.

Sponsored by:	Isilon Systems, Inc.
2006-01-30 08:24:14 +00:00
Jeff Roberson
d6791f7615 - vn_lock with LK_RETRY can not return an error. The code that handled this
case was not necessary.

Sponsored by:	Isilon Systems, Inc.
2006-01-30 08:22:56 +00:00
Jeff Roberson
608c95d341 - Add a comment warning about an anomalous condition where we VOP_UNLOCK
and then vrele rather than vput because we would like to VOP_UNLOCK with
   a specific thread.
2006-01-30 08:21:23 +00:00
Jeff Roberson
033eb86e52 - Lock access to vrele() with VFS_LOCK_GIANT() rather than mtx_lock(&Giant).
Sponsored by:	Isilon Systems, Inc.
2006-01-30 08:19:01 +00:00
Philip Paeps
f50bf4010f Add support for Asus A4D laptops. Currently without display switching
support.  Which reminds me that I'm not even sure if this works on _any_
laptop at all. :-o

PR:		kern/90607
Submitted by:	"Wojciech A. Koszek" <dunstan -at- freebsd.czest.pl>
MFC after:	3 days
2006-01-29 23:59:43 +00:00
Philip Paeps
e691fe45a2 Add support for Asus A6VM laptops.
Submitted by:	Sashi Asokarajan <mail -at- sashi.de>
MFC after:	3 days
2006-01-29 23:54:32 +00:00
Philip Paeps
b9abb62d05 Allow non-P laptops to make use of this module.
Other major changes (from the author):

 o Individual method probing
 o Finally figured out what the RBLL, RVOL, GHKS, GSIF are:
   - RBLL - lcd_brightness radix
   - RVOL - volume radix
   - GHKS - Currently activated hotkey (internal)
   - GSIF - Hotkey mask (internal)

Submitted by:	Anish Mistry <mistry.7 -at- osu.edu>
MFC after:	3 days
2006-01-29 23:52:02 +00:00
Andrew Thompson
74948aa6f3 Back out of r1.148, it causes two arp replies to be sent with different mac
addresses. One for the bridged interface with the IP address assigned but then
another with the mac for the bridge itself.
2006-01-29 23:21:01 +00:00
Roman Kurakin
dfd1ff19b4 Add makefile for ce(4) module. 2006-01-29 22:10:54 +00:00
Roman Kurakin
439635c43e Fix module from panic.
Pointy hat:	brooks
MFC after:	3 days
2006-01-29 22:06:51 +00:00
Scott Long
8ad6b7ab7c Take a stab at making this compile when WITNESS is not defined. gcc can't
figure out the order of operations at line 519, and neither can I, but this
is my best guess.  Also correct a number of typos and syntax errors.
2006-01-29 20:48:25 +00:00
Alexander Leidinger
c8c4c87d6a Fix some potential NULL pointer dereferences.
This is supposed to fix some Coverity Prevent errors (Ariff didn't
looked at the CID's (ENOTIME), I just told him that there are some problems
in function dsp_ioctl()).

CID:		215-218
Found with:	Coverity Prevent(tm)
Submitted by:	ariff
MFC after:	5 days
2006-01-29 16:48:41 +00:00
Damien Bergamini
7563bf8d6a Adjust tx power based on user preferences. 2006-01-29 12:47:07 +00:00
Damien Bergamini
0cfa855f81 o Fix short preamble support
o Fix contention window
o Feed rx rate to radiotap
o Clean ral_setup_txdesc (sync w/ ural)
o s/ic_ibss_chan/ic_curchan/
2006-01-29 12:35:26 +00:00
Damien Bergamini
84f55b29e9 o Re-enable scatter/gather
o Change MEM_READ_1/MEM_READ_4 into macros (move them to if_iwireg.h)
o Add support for association LED
o Silently discard f/w notifications that are unknown (fixes spurious
  "unknown notification 15" in logs with latest firmware)
o Fix scanning of 5GHz channels
2006-01-29 12:03:03 +00:00
Scott Long
a5cbb43e43 The change a few years ago of having contigmalloc start its scan at the top
of physical RAM instead of the bottom was a sound idea, but the implementation
left a lot to be desired.  Scans would spend considerable time looking at
pages that are above of the address range given by the caller, and multiple
calls (like what happens in busdma) would spend more time on top of that
rescanning the same pages over and over.

Solve this, at least for now, with two simple optimizations.  The first is
to not bother scanning high ordered pages that are outside of the provided
address range.  Second is to cache the page index from the last successful
operation so that subsequent scans don't have to restart from the top.  This
is conditional on the numpages argument being the same or greater between
calls.

MFC After: 2 weeks
2006-01-29 08:24:54 +00:00
Yoshihiro Takahashi
b9d43dd384 Set MACHINE to i386(pc98). This fixes cross-building. 2006-01-29 03:32:19 +00:00
Max Laier
6aec1278dc firmware(9) is a subsystem to load binary data into the kernel via a
specially crafted module.  There are several handrolled sollutions to this
problem in the tree already which will be replaced with this.  They include
iwi(4), ipw(4), ispfw(4) and digi(4).

No objection from:	arch
MFC after:		2 weeks
X-MFC after:		some drivers have been converted
2006-01-29 02:52:42 +00:00
Max Laier
69e99c5d4c Unbreak on archs where %d doesn't print uintptr_t arithmetic. 2006-01-29 02:35:22 +00:00
Ariff Abdullah
4a193ac907 Tune format scoring so (non)stereo format will get better chance
to be selected.
2006-01-29 01:32:37 +00:00
Robert Watson
5276d7471f Rename use_old_pty variable to use_pts, as this more accurately reflects
the sense of the variable.

Suggested by:	dwhite
2006-01-28 23:31:19 +00:00
Suleiman Souhlal
c270875f7c Don't try to load KLDs if we're mounting the root. We'd otherwise panic.
Tested by:	kris
MFC after:	3 days
2006-01-28 22:58:39 +00:00
Christian S.J. Peron
7a3e891951 Manage the ucred for the NFS server using the crget/crfree API defined in
kern_prot.c. This API handles reference counting among many other things.
Notably, if MAC is compiled into the kernel, it will properly initialize the
MAC labels when the ucred is allocated.

This work is in preparation for a new MAC entry point which will be responsible
for properly initializing policy specific labels for the NFS server credential.
Utilization of the crfree/crget APIs reduce the complexity associated with
this label's management.

Submitted by:	green (with changes) [1]
Obtained from:	TrustedBSD Project
Discussed with:	rwatson, alfred

[1] I moved the ucred allocation outside the scope of the NFS server lock to
    prevent M_WAIKOK allocations from occurring with non-sleep-able locks held.
    Additionally, to reduce complexity, the ucred persist as long as the NFS
    server descriptor.
2006-01-28 19:24:40 +00:00
Marcel Moolenaar
05157fa0a1 s/DT_IA64_PLT_RESERVE/DT_IA_64_PLT_RESERVE/ 2006-01-28 17:58:22 +00:00
Scott Long
834a3e2222 Add _rwlock.h, apparently missed from the rwlock.h commit. 2006-01-28 17:51:20 +00:00
Scott Long
db161bd596 Squash another invalid use of BUS_DMA_ALLOCNOW.
MFC After: 3 days
2006-01-28 15:50:19 +00:00
Kris Kennaway
d5e5528afe Back out r1.653; it turns out that the race (or at least the printf) is
actually not hard to trigger, and it can cause a lot of console spam.

Approved by:	kan
2006-01-28 03:06:35 +00:00
Warner Losh
6229621e2c lock unused when INVARIANTS not defined, so don't declare it then 2006-01-28 00:49:31 +00:00
John Baldwin
3f08bd8bce Add a basic reader/writer lock implementation to the kernel. This
implementation is by no means perfect as far as some of the algorithms
that it uses and the fact that it is missing some functionality (try
locks and upgrades/downgrades are not there yet), however it does seem
to work in my local testing.  There is more detail in the comments in the
code, but the short version follows.

A reader/writer lock is very much like a regular mutex: it cannot be held
across a voluntary sleep; it can be acquired in an interrupt thread; if
the lock is held by a writer then the priority of any threads that block
on the lock will be lent to the owner; the simple case lock operations all
are done in a single atomic op.  It also shares some similiarities
with sx locks: it supports reader/writer semantics (multiple readers,
but single writers); readers are allowed to recurse, but writers are not.

We can extend this implementation further by either improving algorithms
or adding new functionality, but this should at least give us a base to
work with now.

Reviewed by:	arch (in theory)
Tested on:	i386 (4 cpu box with a kernel module that used 4 threads
		that randomly chose between read locks and write locks
		that ran w/o panicing for over a day solid.  It usually
		panic'd within a few seconds when there were bugs during
		testing. :)  The kernel module source is available on
		request.)
2006-01-27 23:13:26 +00:00
John Baldwin
135161049e Whitespace. 2006-01-27 23:06:08 +00:00
John Baldwin
a08f1507f7 Oops, commit missed file from the previous change to enable multiple
queues in turnstiles.  Add a new thread member td_tsqueue which contains
the sub-queue of a turnstile that a thread is on when it is blocked on a
turnstile.
2006-01-27 23:04:43 +00:00
John Baldwin
7aa4f6852a - Add support for having both a shared and exclusive queue of threads in
each turnstile.  Also, allow for the owner thread pointer of a turnstile
  to be NULL.  This is needed for the upcoming reader/writer lock
  implementation.
- Add a new ddb command 'show turnstile' that will look up the turnstile
  associated with the given lock argument and display useful information
  like the list of threads blocked on each queue, etc.  If there isn't an
  active turnstile for a lock at the specified address, then the function
  will see if there is an active turnstile at the specified address and
  display info about it if so.
- Adjust the mutex code to handle the turnstile API changes.

Tested on:	i386 (all), alpha, amd64, sparc64 (1 and 3)
2006-01-27 22:42:12 +00:00
John Baldwin
f126e754e0 Add a new ddb command 'show sleepq'. It takes a wait channel as an
argument and looks for a sleep queue associated with that wait channel.
If it finds one it will display information such as the list of threads
sleeping on that queue.  If it can't find a sleep queue for that wait
channel, then it will see if that address matches any of the active
sleep queues.  If so, it will display information about the sleepq at the
specified address.
2006-01-27 22:24:07 +00:00
John Baldwin
6966c33482 Call WITNESS_CHECK() in the page fault handler and immediately assume it
is a fatal fault if we are holding any non-sleepable locks.  This should
cut down on the number of bogus LORs we currently get when the kernel
panics due to a NULL (or bogus) pointer dereference that goes wandering
off into the VM system which tries to acquire locks and then kicks off
the spurious LORs.  This should probably be ported to all the archs at
some point.

Tested on:	i386
2006-01-27 22:22:10 +00:00
John Baldwin
ffaf2c55a8 Add a new macro wrapper WITNESS_CHECK() around the witness_warn() function.
The difference between WITNESS_CHECK() and WITNESS_WARN() is that
WITNESS_CHECK() should be used in the places that the return value of
witness_warn() is checked, whereas WITNESS_WARN() should be used in places
where the return value is ignored.  Specifically, in a kernel without
WITNESS enabled, WITNESS_WARN() evaluates to an empty string where as
WITNESS_CHECK evaluates to 0.  I also updated the one place that was
checking the return value of WITNESS_WARN() to use WITNESS_CHECK.
2006-01-27 22:20:15 +00:00
John Baldwin
bef4bf1adf Add a new sysctl, debug.ktr.clear. If you write a non-zero value to this
sysctl then it will clear the KTR buffer.  Note that if you have active
KTR traces at the same time as a clear operation the behavior is undefined,
though it shouldn't panic.
2006-01-27 22:17:31 +00:00
Olivier Houchard
100650dee1 Make sure b_vp and b_bufobj are NULL before calling relpbuf(), as it asserts
they are. They should be NULL at this point, except if we're coming from
swapdev_strategy().
It should only affect the case where we're swapping directly on a file over
NFS.
2006-01-27 21:11:50 +00:00
Olivier Houchard
eeac0e83b3 Try harder not to recurse. 2006-01-27 21:07:04 +00:00
Alan Cox
0034fd6fff Style: Add blank line after local variable declarations. 2006-01-27 21:06:37 +00:00
Warner Losh
96ba6a6eb2 Have a function pointer to the routine to call for writing an mbuf
into the card's memory.

# this eliminates a more of the ifdef soup in if_ed and if_edvar

# I've fixed the cbus drivers, but can't test them all easily.

If I've broken anything, please let me know.
2006-01-27 19:10:13 +00:00
Olivier Houchard
23c15e6437 Merge a bunch of changes that where done in tty_pty.c after tty_pts.c was
forked from it, but missed from some reason.
2006-01-27 15:13:40 +00:00
Pawel Jakub Dawidek
b322d85d53 Call NDFREE() only when vn_open() succeeded.
MFC after:	3 days
2006-01-27 11:27:55 +00:00
Pawel Jakub Dawidek
f220f7afa6 Grr. Backout previous change. vn_open_cred() will call NDFREE() on failure. 2006-01-27 11:25:06 +00:00
Pawel Jakub Dawidek
970c7ca2ef Don't forget to call NDFREE(9) in case of vn_open_cred() failure.
MFC after:	3 days
2006-01-27 11:19:53 +00:00
Gleb Smirnoff
1c8aa594a8 o Introduce D-Link compat mode, that is default to off and can be set
by NGM_PPPOE_SETMODE message. When D-Link compat mode is on, we will
  broadcast PADI with empty Service-Name to all listening hooks.
o Rewrite the compatibility options. Before we had two modes - standard
  and non-standard (aka 3Com). Now we have standard mode and two compat
  flags, that can be combined.
o Be consistent and do s/STUPID/3COM/g. I don't say that 3Com mode isn't
  stupid, just want to make code easier to read.
2006-01-27 10:56:22 +00:00
John-Mark Gurney
7ea60cedb5 add an option BKTR_USE_FREEBSD_SMBUS that enables compiling the module
with same option...

MFC after:	3 days
2006-01-27 09:08:32 +00:00
Roman Kurakin
2ee4be8ec6 Initial import of ce(4) driver for Cronyx Tau-PCI/32 adapters.
Not yet connected to the build.
2006-01-27 09:02:09 +00:00
John-Mark Gurney
bb80263411 if we are compiling with smbus support, properly depend upon the iic and
smbus modules, otherwise as a module you can't kldload bktr...

MFC after:	3 days
2006-01-27 08:42:48 +00:00
Alan Cox
82eedee4a4 Use the new macros abstracting the page coloring/queues implementation.
(There are no functional changes.)
2006-01-27 08:35:32 +00:00