Commit Graph

91957 Commits

Author SHA1 Message Date
Oleksandr Tymoshenko
57677a3a4a Various timing-related fixes:
- Replace divisor numbers with more descirptive names
- Properly calculate minimum frequency for SDHCI 3.0
- Properly calculate frequency for SDHCI 3.0 in mmcbr_set_clock
- Add min_freq method to sdhci_if.m and provide default
  implementation.  By re-implementing this method hardware
  drivers can control frequency controller operates when
  executing initialization sequence
2013-02-16 23:12:06 +00:00
Marcel Moolenaar
cb35030ab3 Return EFAULT when the address is not a kernel virtual address. 2013-02-16 21:46:27 +00:00
Ian Lepore
7a4accc1f0 In _bus_dmamap_addseg(), the return value must be zero for error, or the size
actually added to the segment (possibly smaller than the requested size if
boundary crossings had to be avoided).
2013-02-16 20:43:16 +00:00
Adrian Chadd
1844ff169f * Reduce the PCU lock overhead a little by only re-acquiring it if we
actually do have to reinitialise the RX side of things after an RX
  descriptor EOL error.

* Revert a change of mine from quite a while ago - don't shortcut the
  RX initialisation path.  There's a RX FIFO bug in the earlier chips
  (I'm not sure when it was fixed in this series, but it's fixed
  with the AR9380 and later) which causes the same RX descriptor to
  be written to over and over.  This causes the descriptor to be
  marked as "done", and this ends up causing the whole RX path to
  go very strange.  This should fixed the "kickpcu; handled X packets"
  message spam where "X" is consistently small.
2013-02-16 19:11:57 +00:00
Kirk McKusick
7839b23f00 The UFS2 filesystem allocates new blocks of inodes as they are needed.
When a cylinder group runs short of inodes, a new block for inodes is
allocated, zero'ed, and written to the disk. The zero'ed inodes must
be on the disk before the cylinder group can be updated to claim them.
If the cylinder group claiming the new inodes were written before the
zero'ed block of inodes, the system could crash with the filesystem in
an unrecoverable state.

Rather than adding a soft updates dependency to ensure that the new
inode block is written before it is claimed by the cylinder group
map, we just do a barrier write of the zero'ed inode block to ensure
that it will get written before the updated cylinder group map can
be written. This change should only slow down bulk loading of newly
created filesystems since that is the primary time that new inode
blocks need to be created.

Reported by: Robert Watson
Reviewed by: kib
Tested by:   Peter Holm
2013-02-16 15:11:40 +00:00
Kirk McKusick
2bc1a1fe5c Add barrier write capability to the VFS buffer interface. A barrier
write is a disk write request that tells the disk that the buffer
being written must be committed to the media along with any writes
that preceeded it before any future blocks may be written to the drive.

Barrier writes are provided by adding the functions bbarrierwrite
(bwrite with barrier) and babarrierwrite (bawrite with barrier).

Following a bbarrierwrite the client knows that the requested buffer
is on the media. It does not ensure that buffers written before that
buffer are on the media. It only ensure that buffers written before
that buffer will get to the media before any buffers written after
that buffer. A flush command must be sent to the disk to ensure that
all earlier written buffers are on the media.

Reviewed by: kib
Tested by:   Peter Holm
2013-02-16 14:51:30 +00:00
Adrian Chadd
8c67042b72 Fix an incorrect sizeof()
Spotted by:	clang

Submitted by:	dim
2013-02-16 00:12:21 +00:00
Ian Lepore
3cbc324925 Set map->pmap before _bus_dmamap_count_pages() tries to use it.
Obtained from:	Thomas Skibo <ThomasSkibo@sbcglobal.net>
2013-02-15 23:41:47 +00:00
Jung-uk Kim
00a54dfb1c Consistently use round_page(x) rather than roundup(x, PAGE_SIZE). There is
no functional change.
2013-02-15 22:43:08 +00:00
Oleksandr Tymoshenko
aaa54dd138 Enable USB1 (which is EHCI0) for Allwinner A10
Tested by: ganbold@
2013-02-15 21:29:03 +00:00
Oleksandr Tymoshenko
e589740522 Fix copy-paste error in bus_space_unmap argument
While I'm at it - fix some style(9) issues

Submitted by:	Mikael Urankar
2013-02-15 21:24:21 +00:00
Jung-uk Kim
9c48c75ed6 Merge ACPICA 20130214. 2013-02-15 20:36:28 +00:00
Ian Lepore
a1137de941 Add PPS_CANWAIT support for time_pps_fetch(). This adds support for all three
blocking modes described in section 3.4.3 of RFC 2783, allowing the caller
to retrieve the most recent values without blocking, to block for a specified
time, or to block forever.

Reviewed by:	discussion on hackers@
2013-02-15 18:30:32 +00:00
Sergey Kandaurov
d7ffa24831 vn_io_faults_cnt:
- use u_long consistently
- use SYSCTL_ULONG to match the type of variable

Reviewed by:	kib
MFC after:	1 week
2013-02-15 14:22:05 +00:00
Sergey Kandaurov
ab15d8039e Add support of passing SCM_BINTIME ancillary data object for PF_LOCAL
sockets.

PR:		kern/175883
Submitted by:	Andrey Simonenko <simon@comsys.ntu-kpi.kiev.ua>
Discussed with:	glebius, phk
MFC after:	2 weeks
2013-02-15 13:00:20 +00:00
Gleb Smirnoff
e2a55a0021 Finish the r244185. This fixes ever growing counter of pfsync bad
length packets, which was actually harmless.

Note that peers with different version of head/ may grow this
counter, but it is harmless - all pfsync data is processed.

Reported & tested by:	Anton Yuzhaninov <citrin citrin.ru>
Sponsored by:		Nginx, Inc
2013-02-15 09:03:56 +00:00
Gleb Smirnoff
dc9b4fcacb Fix compilation warning.
Sponsored by:	Nginx, Inc
2013-02-15 07:58:51 +00:00
Xin LI
e469d5a70f Eliminate real_LZ4_uncompress. It's unused and does not perform sufficient
check against input stream (i.e. it could read beyond specified input
buffer).
2013-02-14 21:02:18 +00:00
Monthadar Al Jaberi
0cc7a79be6 Mesh: QoS Control field bit flags fix.
* The following bit flags where incroccetly defined:
    o Mesh Control Present
    o Mesh Power Save Level
    o RSPI
  This is now corrected according to Table 8.4 as per IEEE 802.11 2012;

Approved by:	adrian (mentor)
2013-02-14 20:00:38 +00:00
John Baldwin
174b5f3850 Make VM_NDOMAIN a kernel option so that it can be enabled from a kernel
config file.

Requested by:	phk (ages ago)
MFC after:	1 month
2013-02-14 19:38:04 +00:00
Konstantin Belousov
bf94adb3e1 Print slightly more useful information on the 'bad pte' panic.
No objections from:	alc
MFC after:	1 week
2013-02-14 19:22:15 +00:00
Konstantin Belousov
252b1f6e22 Assert that user address is never qremoved.
No objections from:	alc
MFC after:	1 week
2013-02-14 19:21:20 +00:00
Josh Paetzel
beb0f7e7d4 Resolve issue that caused WITNESS to report LORs.
PR:	kern/171838
Submitted by:	Venkat Duvvuru <venkatduvvuru.ml@gmail.com>
MFC after:	2 weeks
2013-02-14 17:34:17 +00:00
Baptiste Daroussin
3c4223a65a Revert r246791 as it needs a security review first
Reported by:	gavin, rwatson
2013-02-14 15:17:53 +00:00
Baptiste Daroussin
f4365abd91 Allow fdescfs to be mounted from inside a jail
MFC after:	1 week
2013-02-14 13:03:15 +00:00
Hans Petter Selasky
aafcb73207 Add USB API to read power draw on USB devices.
Update usbconfig to print power draw on USB devices.

MFC after:	2 weeks
Submitted by:	Matt Burke @ icritical.com
2013-02-14 12:22:40 +00:00
Neel Natu
25448de222 Requests for invalid CPUID leaves should map to the highest known leaf instead.
Reviewed by:	grehan
Obtained from:	NetApp
2013-02-13 23:22:17 +00:00
Martin Matuska
7c695febc9 Change vfs.zfs.write_to_degraded from CTLFLAG_RW to CTLFLAG_RWTUN
Suggested by:	pjd
2013-02-13 23:11:25 +00:00
Xin LI
314caba11c Restore De Bruijn algorithm for sparc64 where the compiler rely on a
library function for __builtin_c?z.

Tested by:	Michael Moll <kvedulv kvedulv de>
2013-02-13 17:30:54 +00:00
Hans Petter Selasky
626d8465fb Remove unused variable.
MFC after:	1 week
2013-02-13 15:43:15 +00:00
Ian Lepore
f72761c669 Add a dependency so that when compiling in a static dtb, the kernel gets
re-linked after changing the .dts source.

Reviewed by:	cognet, arm@
2013-02-13 15:13:47 +00:00
Ian Lepore
74938cbb7f Make the F_READAHEAD option to fcntl(2) work as documented: a value of zero
now disables read-ahead.  It used to effectively restore the system default
readahead hueristic if it had been changed; a negative value now restores
the default.

Reviewed by:	kib
2013-02-13 15:09:16 +00:00
Hans Petter Selasky
a18a7a414a Resolve a LOR after r246616. Protect control requests using the USB device
enumeration lock. Make sure all callers of usbd_enum_lock() check the return
value. Remove the control transfer specific lock. Bump the FreeBSD version
number, hence external USB modules may need to be recompiled due to a USB
device structure change.

MFC after:	1 week
2013-02-13 12:35:17 +00:00
Hans Petter Selasky
b7f9bfb502 Add new USB ID to FTDI driver.
MFC after:	1 week
PR:		kern/175893
Submitted by:	Tomek
2013-02-13 08:28:27 +00:00
Adrian Chadd
1a85141ad4 Pull out the if_transmit() work and revert back to ath_start().
My changed had some rather significant behavioural changes to throughput.
The two issues I noticed:

* With if_start and the ifnet mbuf queue, any temporary latency
  would get eaten up by some mbufs being queued.  With ath_transmit()
  queuing things to ath_buf's, I'd only get 512 TX buffers before I
  couldn't queue any further frames.

* There's also some non-zero latency involved with TX being pushed
  into a taskqueue via direct dispatch.  Any time the scheduler didn't
  immediately schedule the ath TX task would cause extra latency.
  Various 1ge/10ge drivers implement both direct dispatch (if the TX
  lock can be acquired) and deferred task transmission (if the TX lock
  can't be acquired), with frames being pushed into a drbd queue.
  I'll have to do this at some point, but until I figure out how to
  deal with 802.11 fragments, I'll have to wait a while longer.

So what I saw:

* lots of extra latency, specially under load - if the taskqueue
  wasn't immediately scheduled, things went pear shaped;

* any extra latency would result in TX ath_buf's taking their sweet time
  being replenished, so any further calls to ath_transmit() would drop
  mbufs.

* .. yes, there's no explicit backpressure here - things are just dropped.
  Eek.

With this, the general performance has gone up, but those subtle if_start()
related race conditions are back.  For some reason, this is doubly-obvious
with the AR5416 NIC and I don't quite understand why yet.

There's an unrelated issue with AR5416 performance in STA mode (it's
fine in AP mode when bridging frames, weirdly..) that requires a little
further investigation.  Specifically - it works fine on a Lenovo T40
(single core CPU) running a March 2012 9-STABLE kernel, but a Lenovo T60
(dual core) running an early November 2012 kernel behaves very poorly.
The same hardware with an AR9160 or AR9280 behaves perfectly.
2013-02-13 05:32:19 +00:00
Rui Paulo
eaba9848dd Introduce PLATFORMMETHOD_END and use it. 2013-02-13 02:21:45 +00:00
Marcel Moolenaar
f1acb9d36e Eliminate the PC_CURTHREAD symbol and load the current thread's
thread structure pointer atomically from r13 (the pcpu pointer)
for the current CPU/core.
Add a CTASSERT in machdep.c to make sure that pc_curthread is in
fact the first field in struct pcpu.

The only non-atomic operations left were those related to process-
space operations, such as casuword, subyte, suword16, fubyte,
fuword16, copyin, copyout and their variations.

The casuword function has been re-structured more complete than
the others. This way we have an example of a better bundling
without introducing a lot of risk when we get it wrong. The
other functions can be rebundled in separate commits and with
the appropriate testing.
2013-02-12 17:38:35 +00:00
Marcel Moolenaar
22aa5c496b Eliminate padding by moving 'narg' next to 'code'. Both are 32-bit
entities in the syscall_args structure that otherwise has 64-bit
only fields.
2013-02-12 17:24:41 +00:00
Konstantin Belousov
dd0b4fb6d5 Reform the busdma API so that new types may be added without modifying
every architecture's busdma_machdep.c.  It is done by unifying the
bus_dmamap_load_buffer() routines so that they may be called from MI
code.  The MD busdma is then given a chance to do any final processing
in the complete() callback.

The cam changes unify the bus_dmamap_load* handling in cam drivers.

The arm and mips implementations are updated to track virtual
addresses for sync().  Previously this was done in a type specific
way.  Now it is done in a generic way by recording the list of
virtuals in the map.

Submitted by:	jeff (sponsored by EMC/Isilon)
Reviewed by:	kan (previous version), scottl,
	mjacob (isp(4), no objections for target mode changes)
Discussed with:	     ian (arm changes)
Tested by:	marius (sparc64), mips (jmallet), isci(4) on x86 (jharris),
	amd64 (Fabian Keil <freebsd-listen@fabiankeil.de>)
2013-02-12 16:57:20 +00:00
Marcel Moolenaar
44c169253d Now that we actually use more memory descriptors, make sure to dump
them as well.
2013-02-12 16:51:43 +00:00
Gleb Smirnoff
23f4fd6da4 Substitute '#ifdef ALIGNED_POINTER' with '#ifndef __NO_STRICT_ALIGNMENT',
since the former is defined everywhere. This cuts off some code not
necessary on non strict aligment arches.

Reviewed by:	adrian
Sponsored by:	Nginx, Inc.
2013-02-12 11:24:37 +00:00
Oleksandr Tymoshenko
bb2902189e Remove debug output 2013-02-12 07:27:40 +00:00
Pawel Jakub Dawidek
04f5c32651 Style. 2013-02-11 23:14:54 +00:00
Marius Strobl
18716f9f4b Update comments to reflect r246689. 2013-02-11 23:05:10 +00:00
Pawel Jakub Dawidek
9270ed9d38 Style. 2013-02-11 22:54:23 +00:00
Marius Strobl
bdc5f0172e Make SYSCTL_{LONG,QUAD,ULONG,UQUAD}(9) work as advertised and also handle
constant values.

Reviewed by:	kib
MFC after:	3 days
2013-02-11 21:50:00 +00:00
Martin Matuska
6a33bbc041 Merge zfs_ioctl.c code that should have been merged together with ZFS v28.
Fixes several problems if working with read-only pools.

Changed code originaly introduced in onnv-gate 13061:bda0decf867b
Contains changes up to illumos-gate 13700:4bc0783f6064

PR:		kern/175897
Suggested by:	avg

MFC after:	2 weeks
2013-02-11 21:10:55 +00:00
Michael Tuexen
2416af26a0 Send the adaptation layer indication only if set by the user.
MFC after: 3 days
Discussed with: rrs
2013-02-11 21:02:49 +00:00
Neel Natu
485b3300cc Implement guest vcpu pinning using 'pthread_setaffinity_np(3)'.
Prior to this change pinning was implemented via an ioctl (VM_SET_PINNING)
that called 'sched_bind()' on behalf of the user thread.

The ULE implementation of 'sched_bind()' bumps up 'td_pinned' which in turn
runs afoul of the assertion '(td_pinned == 0)' in userret().

Using the cpuset affinity to implement pinning of the vcpu threads works with
both 4BSD and ULE schedulers and has the happy side-effect of getting rid
of a bunch of code in vmm.ko.

Discussed with:	grehan
2013-02-11 20:36:07 +00:00
Martin Matuska
9689178c3f MFV r246633:
Import vendor bugfixes regarding SA rounding, header size and layout.
This was already partially fixed by avg.

Illumos ZFS issues:
  3512 rounding discrepancy in sa_find_sizes()
  3513 mismatch between SA header size and layout

References:
  https://www.illumos.org/issues/3512
  https://www.illumos.org/issues/3513

MFC after:	2 weeks
2013-02-11 14:29:38 +00:00