from being reclaimed before it was wired. Use pmap_extract_and_hold()
instead of pmap_extract() and retain the hold on the page until it has been
wired.
clock are supported. I have plan to merge XSI timer ITIMER_REAL and other
two CPU timers into the new code, current three slots are available for
the XSI timers.
The SIGEV_THREAD notification type is not supported yet because our
sigevent struct lacks of two member fields:
sigev_notify_function
sigev_notify_attributes
I have found the sigevent is used in AIO, so I won't add the two members
unless the AIO code is adjusted.
2. Introduce flags KSI_EXT and KSI_INS. The flag KSI_EXT allows a ksiginfo
to be managed by outside code, the KSI_INS indicates sigqueue_add should
directly insert passed ksiginfo into queue other than copy it.
OR the flags bits with the driver managed status flags. This fixes an
issue where RUNNING flags would not be reported to processes, which
conflicts with the flags information provided by ifconfig(8).
support the CM-battery interface. Smart batteries can eventually be
supported without ACPI via a separate SMBus interface. The ACPI interface
uses the embedded controller for reading/writing to the SMBus, and normal
ASL definitions for locating the battery controller (since SMBus can't be
enumerated.) Also import definitions for the smart battery interface.
This was written by Hans Petter Selasky with minor cleanups from myself.
Submitted by: Hans Petter Selasky <hselasky / c2i.net>
* Use ACPI_BATT_UNKNOWN instead of constants
* Use maxunit instead of a count of devices since we may have sparse
battery devices in the future. Only userland should be using unit
numbers anyway, so provide a translation function. (Kernel use of
batteries should be restricted to looking up a device_t and calling
methods directly.
* Don't check acpi_BatteryIsPresent() in acpi_battery. Leave it up to
the hardware-specific driver (i.e. cmbat) since smart batteries seem
to not report the "battery present" flag.
* Convert mA to mW if the battery uses those units. CM-batteries only
used mW so this deficiency went unnoticed.
* Clean strings reported in the battery info from any control chars.
* Only dereference the unit from ioctl_arg if the full struct is present.
Unit wouldn't have been used later if it wasn't present but this is
cleaner. Translate the unit if it's not ACPI_BATTERY_ALL_UNITS.
* bzero structs before returning them to usermode for future compat.
Most of this work was submitted by Hans Petter Selasky and then majorly
reworked by myself.
Submitted by: Hans Petter Selasky <hselasky / c2i.net>
vm_object_backing_scan() was not written to handle. Specifically, a wired
page within a backing object that is shadowed by a page within the shadow
object. Handle this state by removing the wired page from the backing
object. The wired page will be freed by socow_iodone().
Stop masking errors: If a page is being freed by vm_object_backing_scan(),
assert that it is no longer mapped rather than quietly destroying any
mappings.
Tested by: Harald Schmalzbauer
too. This fixes problem when connected prefixes overlap.
Obtained from: OpenBSD (rev. 1.40 by claudio);
[ I came to this fix myself, and then found out that
OpenBSD had already fixed it the same way.]
attach routine. Go ahead and ask for it in the probe routine and be
just as wrong as all the other cards that ask for it there...
# this gets the RTL8019 on a SBC at work fully functional. 6.0 still treats
# the 8019 as a generic NE-2000, so these changes aren't relevant there.
This avoids the need for sched_bind() in the default case so that you
can start up the NDIS subsystem at boot time when only CPU 0 is running.
There are potentially ways to fix it so that the DPC threads aren't
started until after the other CPUs are launched, but doing it correctly
is tricky. You need to defer the startup of the ntoskrnl subsystem
(ntoskrnl_libinit()), not just defer ndis_attach().
For now, I don't think it will make much difference having just the
single DPC thread (I started out with just one anyway). Note that this
turns the KeSetTargetProcessorDpc() routine into a no-op, since the
CPU number in struct kdpc is now ignored.
ed_probe_rtl80x9. In the pci case we call ed_probe_rtl80x9 first. In
the PCI case we were using the correct nic_offset by accident because
softc is initialized to zero. In the isa case we were using the wrong
value by accident, since ed_probe_WD80x3 sets the offset value to
0x10. This lead to the identification routines failing. Fix this
problem by always initalizing the nic_offset and asic_offset before
making ed_{asic,nic}_{in,out}* calls.
get a new pv under high system load where the available pv entries
have been exhausted before the pagedaemon has a chance to wake up
to reclaim some.
Prior to this, the NULL pointer dereference ended up causing
secondary panics with rather less than useful resulting tracebacks.
Reviewed by: alc, jhb
MFC after: 1 week
in reiserfs_lookup() that was used to fix an actual race in
ufs_lookup.c:1.78. This is not currently a hazard, but the
bug would be activated by marking reiserfs as MPSAFE.
Reviewed by: mux (mentor)
MFC after: 2 weeks
is KeRaiseIrql(newirql, &oldirql), not oldirql = KeRaiseIrql(newirql).
(The macro ultimately translates to KfRaiseIrql() which does use
the latter API, so this has no effect on generated code.)
Also, wait for thread termination the right way: kthread_exit()
will ultimately do a wakeup(td->td_proc). This is the event we
should wait on. Eliminate the previous synchronization machinery
for this since it was never guaranteed to work correctly.
to (max block - 1) * bsize. For DEV_BSIZE, this doubles the limit from
0.5 TB to 1 TB. For the old 4.4 FFS case, decrease the limit from 0.5 TB
to 2 GB - 1. Older systems had a 32 bit off_t so they couldn't access the
larger files anyway.
Collaboration with: bde
processor, to insure DPC thread 0 runs on CPU0, DPC thread 1 runs on
CPU1, and so on.
Elevate the priority of the workitem threads, though don't use as
high a priority as the DPC threads.
available kernel malloc types. Quite useful for post-mortem debugging of
memory leaks without a dump device configured on a panicked box.
MFC after: 2 weeks
- Destroy mutex in case of attach failure. [1]
- Lock properly em_watchdog(). [1]
- Lock properly em_sysctl_int_delay(). [1]
- Remove unused global adapter linked list.
- Remove unused dma_size field from struct em_dma_alloc.
- Do not touch interface statistics, that must be edited
only by upper layers. [1]
Submitted by: yongari [1]
o Do not mask the RX overrun interrupt.
o Rewrite em_intr():
- Axe EM_MAX_INTR.
- Cycle acknowledging interrupts and processing
packets until zero interrupt cause register is
read.
- If RX overrun comes in log this fact. [ NetBSD also
resets adapter in this case, but my tests showed that
this is not needed and only pessimizes behavior under
heavy load. ]
- Since almost all functions is rewritten, style the
remaining lines.
This fixes em(4) interfaces wedging under high load.
In collaboration with: wpaul, cognet
Obtained from: NetBSD
to unload the usb.ko module after boot if it was originally preloaded
from "/boot/loader.conf". When processing preloaded modules, the
linker erroneously added self-dependencies the each module's reference
count. That prevented usb.ko's reference count from ever going to 0,
so it could not be unloaded.
Sponsored by Isilon Systems.
Reviewed by: pjd, peter
MFC after: 1 week
- disable IPv6 operation if DAD fails for some EUI-64 link-local addresses.
- export get_hw_ifid() (and rename it) as a subroutine for this process.
Obtained from: KAME
Reviewd by: ume, gnn
MFC after: 2 week
Fix a debugging printf to printf after a variable is first assigned,
not before.
These are purely build fixes, and need inspection to make sure they
were what the original author of the previous changes intended.
flag. This fixes panic, when 'ifconfig em0 down' was called and it calls
em_stop() while the em_process_receive_interrupts() has temporarily
dropped the lock.
- fixed typos
- improved some comment descriptions
- use NULL, instead of 0, to denote a NULL pointer
- avoid embedding a magic number in the code
- use nd6log() instead of log() to record NDP-specific logs
- nuked an unnecessay white space
Obtained from: KAME
MFC after: 1 day
sampling rate:
- Improve vchan chn_setspeed() strategy. Try to avoid FEEDER_RATE
on parent channel if the requested value is not supported
by the hardware.
- Fix vchan default speed calculation. In any case, vchan should
rely on parent bufsoft speed instead of bufhard since it is
possible that the entire feeder chain might involve FEEDER_RATE.
This is possible under extreme, rare condition if the above
chn_setspeed() strategy failed.
Approved by: netchild (mentor)
- Change ndis_return() from a DPC to a workitem so that it doesn't
run at DISPATCH_LEVEL (with the dispatcher lock held).
- In if_ndis.c, submit packets to the stack via (*ifp->if_input)() in
a workitem instead of doing it directly in ndis_rxeof(), because
ndis_rxeof() runs in a DPC, and hence at DISPATCH_LEVEL. This
implies that the 'dispatch level' mutex for the current CPU is
being held, and we don't want to call if_input while holding
any locks.
- Reimplement IoConnectInterrupt()/IoDisconnectInterrupt(). The original
approach I used to track down the interrupt resource (by scanning
the device tree starting at the nexus) is prone to problems when
two devices share an interrupt. (E.g removing ndis1 might disable
interrupts for ndis0.) The new approach is to multiplex all the
NDIS interrupts through a common internal dispatcher (ntoskrnl_intr())
and allow IoConnectInterrupt()/IoDisconnectInterrupt() to add or
remove interrupts from the dispatch list.
- Implement KeAcquireInterruptSpinLock() and KeReleaseInterruptSpinLock().
- Change the DPC and workitem threads to use the KeXXXSpinLock
API instead of mtx_lock_spin()/mtx_unlock_spin().
- Simplify the NdisXXXPacket routines by creating an actual
packet pool structure and using the InterlockedSList routines
to manage the packet queue.
- Only honor the value returned by OID_GEN_MAXIMUM_SEND_PACKETS
for serialized drivers. For deserialized drivers, we now create
a packet array of 64 entries. (The Microsoft DDK documentation
says that for deserialized miniports, OID_GEN_MAXIMUM_SEND_PACKETS
is ignored, and the driver for the Marvell 8335 chip, which is
a deserialized miniport, returns 1 when queried.)
- Clean up timer handling in subr_ntoskrnl.
- Add the following conditional debugging code:
NTOSKRNL_DEBUG_TIMERS - add debugging and stats for timers
NDIS_DEBUG_PACKETS - add extra sanity checking for NdisXXXPacket API
NTOSKRNL_DEBUG_SPINLOCKS - add test for spinning too long
- In kern_ndis.c, always start the HAL first and shut it down last,
since Windows spinlocks depend on it. Ntoskrnl should similarly be
started second and shut down next to last.
called during early init before cninit().
Tested on: i386, alpha, sparc64
Reviewed by: phk, imp
Reported by: Divacky Roman xdivac02 at stud dot fit dot vutbr dot cz
MFC after: 1 week
the descriptors set.
- In em_process_receive_interrupts(), call bus_dmamap_sync() for the
descriptors set each time we modify one descriptor, instead of doing it only
at the function exit, to make sure the adapters know he can re-use the
descriptor.
This helps on arm with write-back data cache (and possibly on other arches
with bounce pages, I don't know) under heavy network load. Without this,
if we attempt to process more than num_rx_desc descriptors, the adapter
would just stop processing rx interrupts.
While here, support up to four sections because it was trivial to do
and cheap. (One pointer per section).
For amd64 with "-fpic -shared" format .ko files, using a single PT_LOAD
section is important to avoid wasting about 1MB of KVM and physical ram
for the 'gap' between the two PT_LOAD sections. amd64 normally uses
.o format kld files and isn't affected normally. But -fpic -shared modules
are actually possible to produce and load... (And with a bugfix to
binutils, we can build and use plain -shared .ko files without -fpic)
i386 only wastes 4K per .ko file, so that isn't such a big deal there.
and fs.base. We always update pcb.pcb_gsbase and pcb.pcb_fsbase
when user wants to set them, in context switch routine, we only need to
write them into registers, we never have to read them out from registers
when thread is switched away. Since rdmsr is a serialization instruction,
micro benchmark shows it is worthy to do.
Reviewed by: peter, jhb
the former is the ISA part, not the latter.
MFC After 6.0 is unfrozen (this bug doesn't exist in 6.0 because I didn't
MFC the rtl80x9 changes for ISA due to an error on my part)
cache_lookup() has returned a ref'ed and locked vnode since
vfs_cache.c:1.96, dated Tue Mar 29 12:59:06 2005 UTC. This change
is similar to the change made to smbfs_lookup() in smbfs_vnops.c:1.58.
Tested by: "Antony Mawer" ant AT mawer.org
MFC after: 2 weeks
I benchmarked this by simultaneously extracting 4 large tarballs (basically
world images) on a 4-processor AMD64 system, in a malloc-backed md.
With this patch, system time was reduced by 43%, and wall clock time by 33%.
Submitted by: jeff
MFC after: 1 week
cd9660_lookup() that was used to fix an actual race in ufs_lookup.c:1.78.
This is not currently a hazard, but the bug would be activated by
marking cd9660 as MPSAFE.
Requested by: bde
ext2_lookup() that was used to fix an actual race in ufs_lookup.c:1.78.
This is not currently a hazard, but the bug would be activated by
marking ext2fs as MPSAFE.
Requested by: bde
MFC after: 2 weeks
