signal is received during the msleep, the msleep is retried
indefinitely as it just keeps returning ERESTART because of
the pending signal.
Instead, just don't PCATCH - the signal can wait.
Sponsored by: Sophos/ActiveState
requiried to keep consistent softc state before/after callback function
invocation and supposed to be sligntly faster than previous one as it
wouldn't incur callback overhead. With this change callback function
was gone.
- Decrease TI_MAXTXSEGS to 32 from 128. It seems that most mbuf chain
length is less than 32 and it would be re-packed with m_defrag(9) if
its chain length is larger than TI_MAXTXSEGS. This would protect ti(4)
against possible kernel stack overflow when txsegs[] is put on stack.
Alternatively, we can embed the txsegs[] into softc. However, that
would waste memory and make Tx/Rx speration hard when we want to
sperate Tx/Rx handlers to optimize locking.
- Fix dma map tracking used in Tx path. Previously it used the dma map
of the last mbuf chain in ti_txeof() which was incorrect as ti(4)
used dma map of the first mbuf chain when it loads a mbuf chain with
bus_dmamap_load_mbuf(9). Correct the bug by introducing queues that
keep track of active/inactive dma maps/mbuf chain.
- Use ti_txcnt to check whether driver need to set watchdog timer instead
of blidnly clearing the timer in ti_txeof().
- Remove the 3rd arg. of ti_encap(). Since ti(4) now caches the last
descriptor index(ti_tx_saved_prodidx) used in Tx there is no need to
pass it as a fuction arg.
- Change data type of producer/consumer index to int from u_int16_t in
order to remove implicit type conversions in Tx/Rx handlers.
- Check interface queue before getting a mbuf chain to reduce locking
overhead.
- Check number of available Tx descriptores to be 16 or higher in
ti_start(). This wouldn't protect Tx descriptor shortage but it would
reduce number of bus_dmamap_unload(9) calls in ti_encap() when we are
about to running out of Tx descriptors.
- Command NIC to send packets ony when the driver really has packets
enqueued. Previously it always set TI_MB_SENDPROD_IDX which would
command NIC to DMA Tx descriptors into NIC local memory regardless
of Tx descriptor changes.
Reviewed by: scottl
allocating a resource that's in the card itself.
Remove more now-redundant resource_list_add, and now-redunant code
that lives in the pci layer.
# This fixes the atheros card that I have which had its CIS in one of
# the BARs. Don't know yet if this fixes the amd64 issues reported.
particular this fixes use of wme in adhoc demo mode, it wasn't possible
to set the txop limit because the aggressive mode logic would override
Reviewed by: apatti
MFC after: 2 weeks
the year bump.
# If we behaved like book publishers, we'd do this in July. I can't find
# a good reference for why they do it then, but it has been explained to
# me that copyrights in the last 1/2 of the year expire as if they were
# published in the following year. I can't confirm this info, but if you
# have a pointer, please send it to me.
- provide an interface (macros) to the page coloring part of the VM system,
this allows to try different coloring algorithms without the need to
touch every file [1]
- make the page queue tuning values readable: sysctl vm.stats.pagequeue
- autotuning of the page coloring values based upon the cache size instead
of options in the kernel config (disabling of the page coloring as a
kernel option is still possible)
MD changes:
- detection of the cache size: only IA32 and AMD64 (untested) contains
cache size detection code, every other arch just comes with a dummy
function (this results in the use of default values like it was the
case without the autotuning of the page coloring)
- print some more info on Intel CPU's (like we do on AMD and Transmeta
CPU's)
Note to AMD owners (IA32 and AMD64): please run "sysctl vm.stats.pagequeue"
and report if the cache* values are zero (= bug in the cache detection code)
or not.
Based upon work by: Chad David <davidc@acns.ab.ca> [1]
Reviewed by: alc, arch (in 2004)
Discussed with: alc, Chad David, arch (in 2004)
security.mac.biba.interfaces_equal
If non-zero, all network interfaces be created with the label:
biba/equal(equal-equal)
This is useful where programs which initialize network interfaces
do not have any labeling support. This includes dhclient and ppp. A
long term solution is to add labeling support into dhclient(8)
and ppp(8), and remove this variable.
It should be noted that this behavior is different then setting the:
security.mac.biba.trust_all_interfaces
sysctl variable, as this will create interfaces with a biba/high label.
Lower integrity processes are not able to write to the interface in this
event. The security.mac.biba.interfaces_equal will override
trust_all_interfaces.
The security.mac.biba.interfaces_equal variable will be set to zero
or disabled by default.
MFC after: 2 weeks
USB HID device that allows to plug two PS2 controllers. This specific
device doesn't work yet but will as soon as we support devices with
multiple report IDs.
MFC after: 3 days
broken report descriptor. While I'm here, make all the other report
descriptors const to match the newly added one.
Obtained from: NetBSD
MFC after: 1 week
lack a report descriptor and don't use the standard interface class.
This patch works around these deficiencies so that the uhid(4) driver
can recognize and use those broken devices.
PR: usb/90141
Submitted by: Ed Schouten <ed@fxq.nl> (with minor mods from me)
MFC after: 1 week
force allocation of unallocated BARs (cardbus uses this to preallocate
everything). Add a prefetchmask to allow for busses that get prefetch
hints to set them. Addjust pci_add_map and pci_ata_maps to take a new
force flag which pci_add_resources will pass in. Implement 'force' in
pci_add_map. Write new value of allocated resource into the bar, if
the allocation succeeded (we should have done this before, but with
the new force the bug was very obvious).
- Provide tunable vm.memguard.desc, so one can specify memory type without
changing the code and recompiling the kernel.
- Allow to use memguard for kernel modules by providing sysctl
vm.memguard.desc, which can be changed to short description of memory
type before module is loaded.
- Move as much memguard code as possible to memguard.c.
- Add sysctl node vm.memguard. and move memguard-specific sysctl there.
- Add malloc_desc2type() function for finding memory type based on its
short description (ks_shortdesc field).
- Memory type can be changed (via vm.memguard.desc sysctl) only if it
doesn't exist (will be loaded later) or when no memory is allocated yet.
If there is allocated memory for the given memory type, return EBUSY.
- Implement two ways of memory types comparsion and make safer/slower the
default.
This should reduce huge playback / recording latency for
applications that try to act smarter and manage their own
buffering (XMMS, Skype, etc.).
Note to Skype + via8xxx users: Remove previous hackish
"hint.pcm.<unit>.via_dxs_disabled" from kernel hint and see
whether this changes cure all those annoying sound issues.
