The ulog_login_pseudo(3) and ulog_logout_pseudo(3) interfaces provide a
functionality identical to what libutempter has to offer. Just transform
libutempter's calls into the before mentioned functions.
libutempter doesn't work with utmpx, so instead of fixing I thought the
easiest way would be to integrate this functionality. libutempter is
used by applications like xterm and the KDE libraries, so if I ever
change the underlying file format, these applications will keep working
automatically.
Also increase __FreeBSD_version to indicate the addition (as well as the
import of libulog).
Introduce ATA_CAM kernel option, turning ata(4) controller drivers into
cam(4) interface modules. When enabled, this options deprecates all ata(4)
peripheral drivers (ad, acd, ...) and interfaces and allows cam(4) drivers
(ada, cd, ...) and interfaces to be natively used instead.
As side effect of this, ata(4) mode setting code was completely rewritten
to make controller API more strict and permit above change. While doing
this, SATA revision was separated from PATA mode. It allows DMA-incapable
SATA devices to operate and makes hw.ata.atapi_dma tunable work again.
Also allow ata(4) controller drivers (except some specific or broken ones)
to handle larger data transfers. Previous constraint of 64K was artificial
and is not really required by PCI ATA BM specification or hardware.
Submitted by: nwitehorn (powerpc part)
unless pipe is idle. This should fix follwing issues:
- 'dummynet: OUCH! pipe should have been idle!' log messages.
- exceeding configured pipe bandwidth.
MFC after: 1 week
both to not panic when fsync(2) is called for fifo on zfs
filedescriptor, and to actually fsync fifo inode to permanent storage.
PR: kern/141177
Reviewed by: pjd
MFC after: 1 week
for attaching when there is no metadata yet.
Before r200125 the order of looking for providers was wrong. It was:
1. Find provider by name.
2. Find provider by guid.
3. Find provider by name and guid.
Where it should have been:
1. Find provider by name and guid.
2. Find provider by guid.
3. Find provider by name.
MFC after: 1 week
calling scrub when pool is in a degraded state. It will try to taste ZVOLs,
which will lead to deadlock, as ZVOL will try to acquire the same locks as
replace/scrub is holding already.
We can't simply skip provider based on their GEOM class, because ZVOL can have
providers build on top of it and we need to skip those as well.
We do it by asking for ZFS::iszvol attribute. Any ZVOL-based provider will give
us positive answer and we have to skip those providers.
This way we remove possibility to create ZFS pools on top of ZVOLs, but it is
not very useful anyway.
I believe deadlock is still possible in some very complex situations like when
we have MD provider on top of UFS file on top of ZVOL. When we try to replace
dead component in the pool mentioned ZVOL is based on, there might be a
deadlock when ZFS will try to taste MD provider. There is no easy way to detect
that, but it isn't very common.
MFC after: 1 week
normal in case of media read error and some ATAPI cases, when transfer size
is unknown beforehand. PCI ATA BM specification tells that in case of such
underrun driver should just manually stop DMA engine. DMA engine should
same time guarantie that all bus mastering transfers completed at the moment
of driver reads interrupt flag asserted.
This change should fix interrupt storms and command timeouts in many cases.
PR: kern/103602, sparc64/121539, kern/133122, kern/139654
hooked and the difference in handling the 'enable' variable
for layer2 and layer3. The latter needs fixing once i figure out
how it worked pre-vnet.
MFC after: 7 days
native devices which support the v4l API from processes running within
the linuxulator, e.g. skype or flash can access the multimedia/pwcbsd driver.
Not tested is firmware upload, framebuffer stuff and video tuner stuff
due to lack of hardware.
The clipping part (VIDIOCSWIN) needs a little bit of further work (partly
in progress, but can not be tested due to lack of a suitable device).
The submitter tested this sucessfully with Skype and flash apps on amd64 and
i386 with the multimedia/pwcbsd driver.
Submitted by: J.R. Oldroyd <fbsd@opal.com>
the loop down counter, as well as other things. This was brought to my
attention with a different fix, more for RELENG_7- this one covers the
multiple channel case.
PR: 140438
MFC after: 1 month
single outstanding DMA read operation. Most controllers targeted to
client with PCIe bus interface(e.g. BCM5761) may have this
limitation. All controllers for servers does not have this
limitation.
Collapsing mbuf chains to reduce number of memory reads before
transmitting was most effective way to workaround this. I got about
940Mbps from 850Mbps with mbuf collapsing on BCM5761. However it
takes a lot of CPU cycles to collapse mbuf chains so add tunable to
control the number of allowed TX buffers before collapsing. The
default value is 0 which effectively disables the forced collapsing.
For most cases 2 would yield best performance(about 930Mbps)
without much sacrificing CPU cycles.
Note the collapsing is only activated when the controller is on
PCIe bus and the frame does not need TSO operation. TSO does not
seem to suffer from the hardware limitation because the payload
size is much bigger than normal IP datagram.
Thanks to davidch@ who told me the limitation of client controllers
and actually gave possible workarounds to mitigate the limitation.
Reviewed by: davidch, marius
- Instead of measuring last request execution time for each drive and
choosing one with smallest time, use averaged number of requests, running
on each drive. This information is more accurate and timely. It allows to
distribute load between drives in more even and predictable way.
- For each drive track offset of the last submitted request. If new request
offset matches previous one or close for some drive, prefer that drive.
It allows to significantly speedup simultaneous sequential reads.
PR: kern/113885
Reviewed by: sobomax
Previously the failing operation would allocate an mbuf and construct an
error reply, but because the function did not return 0, the NFS server
assumed it had failed to generate a reply and would leak the reply mbuf as
well as not sending the reply to the NFS client.
PR: kern/140853
Submitted by: Ted Faber faber at isi edu (remove)
Reviewed by: rmacklem (remove)
MFC after: 1 week
- use utility macros for CPU family/model checking
- limit Intel P6 quirk to pre-Nehalem models (taken from OpenSolaris)
- add AMD GartTblWkEn quirk for families 0Fh and 10h; I haven't experienced
any problems without the quirk but both Linux and OpenSolaris do this
- slightly re-arrange quirk code to provide for the future generalization
and separation of vendor-specific quirk functions
Reviewed by: jhb
MFC after: 1 week
table of functions.
This commit (which is heavily based on work done by Marta Carbone
in this year's GSOC project), removes the goto's and explicit
return from the inner switch(), so we will have a easier time when
putting the blocks into individual functions.
MFC after: 3 weeks
Ideally we should attempt attaching only to known supported devices.
But I am not sure that we have all supported PCI IDs already listed,
and I am too young to die, err, I don't want to take the heat from
causing a trouble to someone.
MFC after: 1 week
X-ToDo: drop the default case
Memory accesses are posted in program order by virtue of the
uncacheable memory attribute.
Since GCC, by default, adds acquire and release semantics to
volatile memory loads and stores, we need to use inline assembly
to guarantee it. With inline assembly, we don't need volatile
pointers anymore.
Itanium does not support semaphore instructions to uncacheable
memory.
(gcc 4.x under linux, not sure how real is the complaint).
- rename a macro argument to prevent name clashes.
- add the macro name on a couple of #endif
- add a blank line for readability.
MFC after: 3 days
ndis_scan() is called. However, ndis_scan() is invoked from softclock()
and cannot sleep. Move ndis_scan_results() to the ndis' driver's scan_end
hook instead.
Submitted by: Paul B Mahol onemda of gmail
MFC after: 1 week
using the new option numbers, IP_FW3 and IP_DUMMYNET3.
Right now the modules return an error if called with those arguments
so there is no danger of unwanted behaviour.
MFC after: 3 days
- directly print mca information in case we fail to allocate memory
for a record
- include bank number into mca record
- print raw mca status value for extended information
Reviewed by: jhb
MFC after: 10 days
No functional differences.
- use the div64() macro to wrap 64 bit divisions
(which almost always are 64 / 32 bits) so they are easier
to handle with compilers or OS that do not have native
support for 64bit divisions;
- use a local variable for p_numbytes even if not strictly
necessary on HEAD, as it reduces diffs with FreeBSD7
- in dummynet_send() check that a tag is present before
dereferencing the pointer.
- add a couple of blank lines for readability near the end of a function
MFC after: 3 days
