future further optimizations where the vm_object lock will be held
in read mode most of the time the page cache resident pool of pages
are accessed for reading purposes.
The change is mostly mechanical but few notes are reported:
* The KPI changes as follow:
- VM_OBJECT_LOCK() -> VM_OBJECT_WLOCK()
- VM_OBJECT_TRYLOCK() -> VM_OBJECT_TRYWLOCK()
- VM_OBJECT_UNLOCK() -> VM_OBJECT_WUNLOCK()
- VM_OBJECT_LOCK_ASSERT(MA_OWNED) -> VM_OBJECT_ASSERT_WLOCKED()
(in order to avoid visibility of implementation details)
- The read-mode operations are added:
VM_OBJECT_RLOCK(), VM_OBJECT_TRYRLOCK(), VM_OBJECT_RUNLOCK(),
VM_OBJECT_ASSERT_RLOCKED(), VM_OBJECT_ASSERT_LOCKED()
* The vm/vm_pager.h namespace pollution avoidance (forcing requiring
sys/mutex.h in consumers directly to cater its inlining functions
using VM_OBJECT_LOCK()) imposes that all the vm/vm_pager.h
consumers now must include also sys/rwlock.h.
* zfs requires a quite convoluted fix to include FreeBSD rwlocks into
the compat layer because the name clash between FreeBSD and solaris
versions must be avoided.
At this purpose zfs redefines the vm_object locking functions
directly, isolating the FreeBSD components in specific compat stubs.
The KPI results heavilly broken by this commit. Thirdy part ports must
be updated accordingly (I can think off-hand of VirtualBox, for example).
Sponsored by: EMC / Isilon storage division
Reviewed by: jeff
Reviewed by: pjd (ZFS specific review)
Discussed with: alc
Tested by: pho
elements to the USB audio softc structure. This fixes a double CPU
fault when attaching USB audio devices in 10-current for i386 at
least.
MFC after: 1 week
detailed information under the sound debug. To make it easier accessible,
export that information through the set of sysctls like dev.hdaa.X.nidY.
Also tune some output to make it both more compact and informative.
from HDMI/DisplayPort devices in form of general connection status and
sound(4)-style channel matrix. Now that information is only reported in
readable form to verbose logs, but potentially could be used by sound(4)
to correctly choose default devices and configure vchans.
Fix rear and side channels swap on analog 7.1 outputs. As soon as there is
a huge mess in industry about naming and using of these channels, duplicate
rear channels of 4 and 5.1 streams to both read and side speakers.
Add software mixer table for FastTrack Ultra.
Only set volume controls which are valid at startup for standard
USB audio devices, so that settings like treble and bass use
the reset defaults.
MFC after: 1 week
PCM API doesn't support showing all the knobs. Make sure all the USB audio
mixer nodes are freed at detach. Before this patch USB audio would leak
some memory at detach. Print out buffer sizes in number of samples at attach.
Fix setting of volume controls when the number of channels is greater than two.
MFC after: 1 week
if unused in that configuration mixer at NID 15 is muted. Probably CODEC
incorrectly reports its internal connections. Hide that muter from the
driver to avoid muting and make built-in speaker work.
There are several different CODECs sharing this ID and I have not enough
information about them and the bug to implement more universal solution.
Tested by: Big Yuuta <init.py@gmail.com>
MFC after: 2 weeks
with the real value in regular way if sensing is supported. This fixes
minor inconsistency when playback redirection appeared in undefined state
on boot if headphones were not connected.
audio devices. This endpoint gives clues to the USB host about the
actual data rate on asynchronous endpoints and makes the more
expensive USB audio devices usable under FreeBSD.
The Linux USB audio driver was used as reference for the
automagic shift of the received value.
MFC after: 1 week
appear on which interface. This fixes detection of some USB audio adapters.
Also increase the channel limit for FULL speed devices to 4 channels.
Tested by: gavin
MFC after: 1 week
device drivers that used to provide this feature.
This is a subset of 241856 (which was reverted)
Reviewed by: des
Approved by: cperciva (implicit)
MFC after: 1 week
make analog input loopback and dual-stream playback work by enabling
signal mixing by nid 22, as it should be according to info returned by
the CODEC. Otherwise pin nid 28 receives only signal from DAC nid 16.
PR: kern/169124
MFC after: 1 week
at r230551.
Also while there, make sense polling use reported for each node separately
instead of reporting accumulated total status.
Submitted by: Barbara <barbara.freebsd@gmail.com> (1)
MFC after: 3 days
