and update the rx code to handle multiple frames in a single usb
transfer. AX772 parts (at least) exhibit many input errors when
operated with a 2K rx buffer and no errors w/ a 4K rx buffer (it's
unclear what the cause of the errors is for 2K so this may just be
covering up the real issue). Larger rx buffer sizes show no
significant performance improvement for AX772. Bypassing the common
buffer management routines also eliminates an extra context switch
on every packet which noticeably improves performance (TCP netperf
rx goes from 45 Mb/s to 85 MB/s).
Submitted by: "J.R. Oldroyd" <fbsd@opal.com>
Reviewed by: imp
Obtained from: openbsd (partly)
MFC after: 3 weeks
* Correct spelling and grammar
* Re-structure sentences in BUGS section for legibility
* Break long lines appropriately
* Break lines at full stops
* Add mdoc(9) commands where applicable
* Remove superfluous .Ft in the SYNOPSIS section
* Various other mdoc(9) fixes
The reliability of it's multi DAC / playback channels is
not that good. Enabling vchans make the bug more visible
since playback allocation will look for possible free
hardware channels first (i.e: the next DAC, the very first
has been consumed by vchan mixer) which in this case has
been proven faulty.
Reported / Tested by: Sascha Klauder
MFC after: 3 days
to be specified together with either -u or -t to have an effect,
and exit status of 2 is not possible after a Perl->C conversion.
- While here, fix markup.
This includes:
o mtree (for legal/intel_wpi)
o manpage for i386/amd64 archs
o module for i386/amd64 archs
o NOTES for i386/amd64 archs
Approved by: mlaier (comentor)
proc_rwmen.
Otherwise copy on write may create an anonymous page that is
not marked as dirty. Since writing data to these pages
in this function also does not dirty these pages they may be
later discarded by the pagedaemon.
- Use unit2minor() and minor2unit() to generate minor numbers to support
unit numbers higher than 255.
- Use simple string operations on the 'names' array rather than hard-coded
constants and switch statements so that more ptys can be added by simply
expanding the 'names' array.
MFC after: 1 week
lock optimized for almost exclusive reader access. (see also rmlock.9)
TODO:
Convert to per cpu variables linkerset as soon as it is available.
Optimize UP (single processor) case.
