delist_dev() function. In addition to this change:
- add a proper description of this function
- add a proper witness assert inside this function
- switch a nearby line to use the "cdp" pointer instead of cdev2priv()
MFC after: 3 days
The magic number MSDOSFS_ARGSMAGIC, which used to distinguish
"old" vs "new" msdosfs mount arguments, has not been used since
2005; it should just go away now.
Likewise, the local-to-Unicode table that changed at the same
time is unused.
Leave the space reserved in the old style mount arguments, though,
since we still support the old mount call (via the cmount entry
point).
Submitted by: Chris Torek <chris.torek@gmail.com>
MFC after: 2 weeks
This is based on the AP135 design - QCA9558 SoC, 3x3 2GHz wifi, but no
5GHz (11n or 11ac) chip is available.
It however still has 128MiB of RAM, 16MiB of NOR flash and the AR8327N
gigabit switch - so it's quite a beefy router device.
Tested:
* Well, a unit, naturally
Obtained from: Completely messing up an amazon.com order and getting this instead, and asking "hey, wonder if I could.."
* add ipfw
* delete ath / ath_ahb for now, until I can have Warner beat me
with the clue stick about putting in conditional build things into
the ath Makefile so the module builds can just have the HAL bits
that are relevant for a particular target.
path.
* For now there's no exposed control over classic / LNA antenna diversity,
so just stub them out. Adding this will take quite a bit of time.
* Add a function to fetch the CTS timeout.
PR: kern/198558
This allows us to get rid of bzero which was added specifically to make
mtx_init on p_mtx reliable.
This also fixes a potential problem where mtx_init on other mutexes
could trip over on unitialized memory and fire an assertion.
Reviewed by: kib
proc_set_cred_init can be used to set first credentials of a new
process.
Update proc_set_cred assertions so that it only expects already used
processes.
This fixes panics where p_ucred of a new process happens to be non-NULL.
Reviewed by: kib
Prior to this change the kernel would take p1's credentials and assign
them tempororarily to p2. But p1 could change credentials at that time
and in effect give us a use-after-free.
No objections from: kib
(this has to be passed as a combination of two flags). Should fix the
case where the clang version is before 3.5.0.
Submitted by: Pedro Arthur <bygrandao@gmail.com>
X-MFC-With: r279018, r279378
named objects to zero before the virtual address is selected. Previously,
the color setting was delayed until after the virtual address was
selected. In rtld, this delay effectively prevented the mapping of a
shared library's code section using superpages. Now, for example, we see
the first 1 MB of libc's code on armv6 mapped by a superpage after we've
gotten through the initial cold misses that bring the first 1 MB of code
into memory. (With the page clustering that we perform on read faults,
this happens quickly.)
Differential Revision: https://reviews.freebsd.org/D2013
Reviewed by: jhb, kib
Tested by: Svatopluk Kraus (armv6)
MFC after: 6 weeks
we're not looking at it.
Fix this by increasing l2->l2_occupancy before we try to alloc (and decrease
it if the allocation failed, or if another thread did a similar allocation).
Submitted by: Kohji Okuno <okuno.kohji@jp.panasonic.com>
MFC after: 1 week
- Use real locking, replace Giant with global sx protecting the
subsystem. Since the subsystem' lock is no longer dropped during
the sleepsk, remove not needed SHMSEG_WANTED segment flag, and
revert r278963.
- To do proper code simplification possible after the change of the
lock, restructure several functions into _locked body and
originally-named wrapper which calls into _locked variant. This
allows to eliminate the 'goto done2' spread over the code.
- Merge shm_find_segment_by_shmid() and shm_find_segment_by_shmidx().
- Consistently change all function prototypes to ANSI C.
Reviewed by: mjg (who has earlier version of the similar patch to
introduce real locking)
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
appears to be too inaccurate that it can be used to synchronize the
playback data stream. If there is a recording endpoint associated with
the playback endpoint, use that instead. That means if the isochronous
OUT endpoint is asynchronus the USB audio driver will automatically
start recording, if possible, to get exact information about the
needed sample rate adjustments. In no recording endpoint is present,
no rate adaption will be done.
While at it fix an issue where the hardware buffer pointers don't get
reset at the first device PCM trigger.
Make some variables 32-bit to avoid problems with multithreading.
MFC after: 3 days
PR: 198444
ENTRY_ATTRIBUTE (eg cn) after the VALUE_ATTRIBUTE (eg automountInformation),
instead of before.
PR: 198557
MFC after: 1 month
Sponsored by: The FreeBSD Foundation
These are actually almost the same units; except one is 3x3 5GHz, and
one is 2x2 5GHz.
Tested:
* TP-Link TL-WDR3600
TODO:
* The ath0/ath1 MAC addresses are ye garbage (00:02:03:04:05:06); fixing
that will take a little more time. It works fine with the ath0/ath1
MAC addresses set manually.
* Go through and yank the AR9344 on-board switch config (arswitch1);
it's not required here for this AP.
The AR934x (and maybe others in this family) have a more complicated
GPIO mux. The AR71xx just has a single function register for a handful
of "GPIO or X" options, however the AR934x allows for one of roughly
100 behaviours for each GPIO pin.
So, this adds a quick hints based mechanism to configure the output
functions, which is required for some of the more interesting board
configurations. Specifically, some use external LNAs to improve
RX, and without the MUX/output configured right, the 2GHz RX side
will be plain terrible.
It doesn't yet configure the "input" side yet; I'll add that if
it's required.
Tested:
* TP-Link TL-WDR3600, testing 2GHz STA/AP modes, checking some
basic RX sensitivity things (ie, "can I see the AP on the other
side of the apartment that intentionally has poor signal reception
from where I am right now.")
Whilst here, fix a silly bug in the maxpin routine; I was missing
a break.
Previously format string traversal could happen while the string itself was
being modified.
Use allproc_lock as coredumping is a rare operation and as such we don't
have to create a dedicated lock.
Submitted by: Tiwei Bie <btw mail.ustc.edu.cn>
Reviewed by: kib
X-Additional: JuniorJobs project
Currently we update timestamps unconditionally when doing read or
write operations. This may slow things down on hardware where
reading timestamps is expensive (e.g. HPET, because of the default
vfs.timestamp_precision setting is nanosecond now) with limited
benefit.
A new sysctl variable, vfs.devfs.dotimes is added, which can be
set to non-zero value when the old behavior is desirable.
Differential Revision: https://reviews.freebsd.org/D2104
Reported by: Mike Tancsa <mike sentex net>
Reviewed by: kib
Relnotes: yes
Sponsored by: iXsystems, Inc.
MFC after: 2 weeks
- Use ifunit() instead of going through the interface list ourselves.
- Remove unused parameter.
- Move the most important comment above the function.
Sponsored by: Nginx, Inc.
Many thanks to ian who gently provided me the DS1307 breakout board.
Tested on: Raspberry pi
Differential Revision: https://reviews.freebsd.org/D2022
Reviewed by: rpaulo
a new filesystem before packaging it into a disk image. This prevents
"remnants" of deleted files from showing up in the VM images, and reduces
their compressed size (by about 10% for the cloudware images) as a result.
Looks good to: gjb
to get the default frequency of the sdhci device.
While here use a u_int to hold the frequency as it may be too large to fit
in a 32-bit signed integer. This is the case when we have a 250MHz clock.
and create a "hidden" API that can be used in other system headers without
adding namespace pollution.
- If the POPCNT instruction is enabled at compile time, use
__builtin_popcount*() to implement __bitcount*(), otherwise fall back
to software implementations.
- Use the existing bitcount16() and bitcount32() from <sys/systm.h> to
implement the non-POPCNT __bitcount16() and __bitcount32() in
<sys/types.h>.
- For the non-POPCNT __bitcount64(), use a similar SWAR method on 64-bit
systems. For 32-bit systems, use two __bitcount32() operations on the
two halves.
- Use __bitcount32() to provide a __bitcount() that operates on plain ints.
- Use either __bitcount32() or __bitcount64() to provide a
__bitcountl() that operates on longs.
- Add public bitcount*() wrappers for __bitcount*() for use in the kernel
in <sys/libkern.h>.
- Use __builtinl() instead of __builtin_popcountl() in BIT_COUNT().
Discussed with: bde
