ask NDINIT to return a locked vnode instead of letting it drop the
lock and return a referenced vnode and then relock the vnode a few
lines down. This matches the behavior of other filesystem mount routines.
- An "at" hint now reserves a device name.
- A new BUS_HINT_DEVICE_UNIT method is added to the bus interface. When
determining the unit number of a device, this method is invoked to
let the bus driver specify the unit of a device given a specific
devclass. This is the only way a device can be given a name reserved
via an "at" hint.
- Implement BUS_HINT_DEVICE_UNIT() for the acpi(4) and isa(4) bus drivers.
Both of these busses implement this by comparing the resources for a
given hint device with the resources enumerated by ACPI/PnPBIOS and
wire a unit if the hint resources are a subset of the "real" resources.
- Use bus_hinted_children() for adding hinted devices on isa(4) busses
now instead of doing it by hand.
- Remove the unit kludging from sio(4) as it is no longer necessary.
Prodding from: peter, imp
OK'd by: marcel
MFC after: 1 month
This bring huge amount of changes, I'll enumerate only user-visible changes:
- Delegated Administration
Allows regular users to perform ZFS operations, like file system
creation, snapshot creation, etc.
- L2ARC
Level 2 cache for ZFS - allows to use additional disks for cache.
Huge performance improvements mostly for random read of mostly
static content.
- slog
Allow to use additional disks for ZFS Intent Log to speed up
operations like fsync(2).
- vfs.zfs.super_owner
Allows regular users to perform privileged operations on files stored
on ZFS file systems owned by him. Very careful with this one.
- chflags(2)
Not all the flags are supported. This still needs work.
- ZFSBoot
Support to boot off of ZFS pool. Not finished, AFAIK.
Submitted by: dfr
- Snapshot properties
- New failure modes
Before if write requested failed, system paniced. Now one
can select from one of three failure modes:
- panic - panic on write error
- wait - wait for disk to reappear
- continue - serve read requests if possible, block write requests
- Refquota, refreservation properties
Just quota and reservation properties, but don't count space consumed
by children file systems, clones and snapshots.
- Sparse volumes
ZVOLs that don't reserve space in the pool.
- External attributes
Compatible with extattr(2).
- NFSv4-ACLs
Not sure about the status, might not be complete yet.
Submitted by: trasz
- Creation-time properties
- Regression tests for zpool(8) command.
Obtained from: OpenSolaris
read before we configure the card, so we can implement
/dev/cardbus*.cis. Also, do this on a per-child basis, so we now have
a different name than before. I think i'll have to fix that for some
legacy tools to keep working.
I can now do a dumpcis on my running atheros card and have it still work!
kern_unlinkat(), that expects that vn_start_write() actually fills the mp
even when the call failed.
As Tor noted, that pattern relies on the the type stability of the mount
points, as well as that suspended mount points are never freed and
V_XSLEEP is always passed to vn_start_write() when called on a freed
mount point.
Reported by: stass
Reviewed by: tegge
PR: 123768
rerun of the streaming cache for silicon bug workarounds.
- Announce the presence of a streaming cache on attach for
informational purposes.
- For performance reasons don't do unnecessary flushes of the
streaming cache when coherent mappings are synced.
- Fix some minor style issues.
class CPUs. In theory one could also use versions additionally
taking advantage of the prefetch cache with cheetah-class CPUs,
in my worldstone runs these either didn't provide extra speedup
(USIII+) in comparison to the existing spitfire versions or were
even slightly slower (USIIIi) though, so they aren't committed
for now.
The basic problem leading to the VIS-based copy/zero functions
being initially disabled for cheetah-class CPUs was solved by
letting cheetah_init() clear DCR_IFPOE.
redundant malloc/free. Add comments about how this should really be
done. Fix an overly verbose comment about under 1MB mapping: go ahead
and set the bits, but we ignore them.
- If the flag is set and auto-select fails, assume disk is not present.
- Set disk empty flag only when the floppy controller reset is needed.
It fixes regression introduced in r1.311, which prevented it from ignoring
errors. Now fdformat(1) and dd(1) with conv=noerror option can continue
when read/write errors occur as they should.
- Do not retry disk probing as it is extremely slow and pointless.
- Move the disk probing code into a separate function.
- Do not reset disk empty flag if write-protect check fails somehow.
PR: kern/116538[1]
I have fixed the reported problems - if you still have trouble with it, please
contact me with as much detail as possible so that I can track down any other
issues as quickly as possible.
In my commit that moved uname(), setdomainname() and getdomainname() to
COMPAT_FREEBSD4, I also removed PRIV_SETDOMAINNAME, because it was
already protected by userland_sysctl(). We'd better keep the number 20
reserved, to prevent it from being used again.
Requested by: rwatson
pointer in a local thread. While this is unlikely to significantly
improve performance given modern compiler behavior, it makes the code
more readable and reduces diffs to the Mac OS X version of the same
code (which stores things in creds in the same way, but where the
cred for a thread is reached quite differently).
Discussed with: sson
MFC after: 1 month
Sponsored by: Apple Inc.
Obtained from: TrustedBSD Project
the softc is reset a few times during probing.
Print 'changing to modem mode' messages if booting verbose to show the
reason for the time delay. Note: Some devices (Huawei for one) take 20
seconds to appear on the USB bus).
up space. If the buffer cache fills up then the disk systems can
grind to a halt. Better tuning can be figured out later.
Tested by: Tim, others and work
Reviewed by: Kostik Belousov
PR: 128832
the nfsd problems that some people have with the new code.
Add support for the vfs.nfsrv.nfs_privport sysctl which denies access unless
the client is using a port number less than 1024. Not really sure if this is
particularly useful since it doesn't add any real security.
fix the problems a few people have noticed with the new code. People who want
to continue testing the new code or who need RPCSEC_GSS support should use
the new option NFS_NEWRPC to select it.
can be controlled by ifconfig(8). Note, VLAN hardware tagging
controls still lacks required handler but it requires more driver
cleanups so I didn't touch that part.
PR: kern/128766
queue length variables as well, avoiding storing the limit in a larger
type than the length.
Submitted by: sson
Sponsored by: Apple Inc.
MFC after: 1 week
- Fix to ioctl path in which the length could be 0 which means
no data in/out from LSI.
- Fix to ioctl path in which the data in the sense data space
of the ioctl packet is a really a pointer to some location in
user-space. From LSI re-worked a bit by me.
- Add HW support for next gen cards from LSI.
Thanks to LSI for their support!
Submitted by: jhb, LSI
MFC after: 3 days
-Improvement: panic() on INVARIANTS kernels if memory allocation
fails for a tagblock in sctp_add_vtag_to_timewait().
-Bugfix: Protect code in sctp_is_in_timewait() by
SCTP_INP_INFO_WLOCK/SCTP_INP_INFO_WUNLOCK.
-Cleanup: Get rid of unused variable now in sctp_init_asoc().
-Bugfix: Reuse the correct vtag in sctp_add_vtag_to_timewait().
-Cleanup: Get rid of unused constant SCTP_TIME_WAIT_SHORT
in sctp_constants.h.
-Improvement: Use all hash buckets of the vtag hash table.
-Cleanup: Get rid of then unused constant SCTP_STACK_VTAG_HASH_SIZE_A.
-Bugfix: Handle SHUTDOWN;SACK packet correctly.
-Bugfix: Last TSN in a gap ack block was not being "ack'd"
in the internal scoreboard.
Obtained from: (with help from Michael Tuexen)
The same (vendor, product) tuple is used for aue(4) adapters,
but I am not sure if the quirk is correct. I'm using the USB
device 'release' info to skip aue(4) detection right now, but
if there's a better way to differentiate between USB-LAN and
USB Bluetooth we should update the quirk.
Reviewed by: imp, rink
MFC after: 2 weeks
controller. The controller is also known as L1E(AR8121) and
L2E(AR8113/AR8114). Unlike its predecessor Attansic L1,
AR8121/AR8113/AR8114 uses completely different Rx logic such that
it requires separate driver. Datasheet for AR81xx is not available
to open source driver writers but it shares large part of Tx and
PHY logic of L1. I still don't understand some part of register
meaning and some MAC statistics counters but the driver seems to
have no critical issues for performance and stability.
The AR81xx requires copy operation to pass received frames to upper
stack such that ale(4) consumes a lot of CPU cycles than that of
other controller. A couple of silicon bugs also adds more CPU
cycles to address the known hardware bug. However, if you have fast
CPU you can still saturate the link.
Currently ale(4) supports the following hardware features.
- MSI.
- TCP Segmentation offload.
- Hardware VLAN tag insertion/stripping with checksum offload.
- Tx TCP/UDP checksum offload and Rx IP/TCP/UDP checksum offload.
- Tx/Rx interrupt moderation.
- Hardware statistics counters.
- Jumbo frame.
- WOL.
AR81xx PCIe ethernet controllers are mainly found on ASUS EeePC or
P5Q series of ASUS motherboards. Special thanks to Jeremy Chadwick
who sent the hardware to me. Without his donation writing a driver
for AR81xx would never have been possible. Big thanks to all people
who reported feedback or tested patches.
HW donated by: koitsu
Tested by: bsam, Joao Barros <joao.barros <> gmail DOT com >
Jan Henrik Sylvester <me <> janh DOT de >
Ivan Brawley < ivan <> brawley DOT id DOT au >,
CURRENT ML
Peter Holm just discovered this funny bug inside the TTY code: if
uiomove() in ttydisc_write() returns an error, we forget to relock the
TTY before jumping out of ttydisc_write(). Fix it by placing
tty_unlock() and tty_lock() around uiomove().
Submitted by: pho
regular header tokens. The extended header tokens contain an IP
or IPv6 address which makes it possible to identify which host an
audit record came from when audit records are centralized.
If the host information has not been specified, the system will
default to the old style headers. Otherwise, audit records that
are created as a result of system calls will contain host information.
This implemented has been designed to be consistent with the Solaris
implementation. Host information is set/retrieved using the A_GETKAUDIT
and A_SETKAUDIT auditon(2) commands. These commands require that a
pointer to a auditinfo_addr_t object is passed. Currently only IP and
IPv6 address families are supported.
The users pace bits associated with this change will follow in an
openbsm import.
Reviewed by: rwatson, (sson, wsalamon (older version))
MFC after: 1 month
- Use `fildes[2]' instead of `*fildes' to make more clear that pipe(2)
fills an array with two descriptors.
- Remove EFAULT from the manual page. Because of the current calling
convention, pipe(2) raises a segmentation fault when an invalid
address is passed.
- Introduce kern_pipe() to make it easier for binary emulations to
implement pipe(2).
- Make Linux binary emulation use kern_pipe(), which means we don't have
to recover td_retval after calling the FreeBSD system call.
Approved by: rdivacky
Discussed on: arch
This prevents a panic which occurs when a driver attempts to load
firmware at boot via firmware_get() when the firmware module has not
been preloaded. firmware_get() will enqueue a task using a struct
taskqueue allocated on the stack, and the machine will crash much
later in the firmware taskq thread when taskqs are started and the
struct taskqueue is garbage.
Not objected to by: sam
- Do not let individual KLD module unregister firmware image loaded by ispfw
or vice versa.
- Make 'kldunload ispfw' actually unregister all firmware images loaded by
ispfw, not just 'isp_1040'.
- Print which KLD module actually loaded the firmware image.
- Remove unused return value from do_load_fw() and do_unload_fw() and remove
duplicate sys/param.h while I am here.
dependencies. A 'struct pmc_classdep' structure describes operations
on PMCs; 'struct pmc_mdep' contains one or more 'struct pmc_classdep'
structures depending on the CPU in question.
Inside PMC class dependent code, row indices are relative to the
PMCs supported by the PMC class; MI code in "hwpmc_mod.c" translates
global row indices before invoking class dependent operations.
- Augment the OP_GETCPUINFO request with the number of PMCs present
in a PMC class.
- Move code common to Intel CPUs to file "hwpmc_intel.c".
- Move TSC handling to file "hwpmc_tsc.c".
Looking at our source code history, it seems the uname(),
getdomainname() and setdomainname() system calls got deprecated
somewhere after FreeBSD 1.1, but they have never been phased out
properly. Because we don't have a COMPAT_FREEBSD1, just use
COMPAT_FREEBSD4.
Also fix the Linuxolator to build without the setdomainname() routine by
just making it call userland_sysctl on kern.domainname. Also replace the
setdomainname()'s implementation to use this approach, because we're
duplicating code with sysctl_domainname().
I wasn't able to keep these three routines working in our
COMPAT_FREEBSD32, because that would require yet another keyword for
syscalls.master (COMPAT4+NOPROTO). Because this routine is probably
unused already, this won't be a problem in practice. If it turns out to
be a problem, we'll just restore this functionality.
Reviewed by: rdivacky, kib
On RELENG_6 (and probably RELENG_7) we see our syscons windows and
pseudo-terminals have the following buffer sizes:
| LINE RAW CAN OUT IHIWT ILOWT OHWT LWT COL STATE SESS PGID DISC
| ttyv0 0 0 0 7680 6720 2052 256 7 OCcl 1146 1146 term
| ttyp0 0 0 0 7680 6720 1296 256 0 OCc 82033 82033 term
These buffer sizes make no sense, because we often have much more output
than input, but I guess having higher input buffer sizes improves
guarantees of the system.
On MPSAFE TTY I just sent both the input and output buffer sizes to 7
KB, which is pretty big on a standard FreeBSD install with 8 syscons
windows and some PTY's. Reduce the baud rate to 9600 baud, which means
we now have the following buffer sizes:
| LINE INQ CAN LIN LOW OUTQ USE LOW COL SESS PGID STATE
| ttyv0 1920 0 0 192 1984 0 199 7 2401 2401 Oil
| pts/0 1920 0 0 192 1984 0 199 5631 1305 2526 Oi
This is a lot smaller, but for pseudo-devices this should be good
enough. You need to do a lot of punching to fill up a 7.5 KB input
buffer. If it turns out things don't work out this way, we'll just
switch to 19200 baud.
from one parent directory to another, in addition to the usual access checks
one also needs write access to the subdirectory being moved.
Approved by: rwatson (mentor), pjd
still valid. We were checking the state of the header and
not the table.
PR: 119868
Based on a patch from: Jaakko Heinonen <jh@saunalahti.fi>
MFC after: 1 week
tcp_mss() and tcp_mss_update() so that tcp_mtudisc() could
re-use the same code.
Move the TSO logic back to tcp_mss() and out of tcp_mss_update().
We tried to avoid that initially but if were are called from
tcp_output() with EMSGSIZE, we cleared the TSO flag on the tcpcb
there, called into tcp_mtudisc() and tcp_mss_update() which
then would reenable TSO on the tcpcb based on TSO capabilities
of the interface as learnt in tcp_maxmtu/6().
So if TSO was enabled on the (possibly new) outgoing interface
it was turned back on, which lead to an endless loop between
tcp_output() and tcp_mtudisc() until we overflew the stack.
Reported by: kmacy
MFC after: 2 months (along with r182851)
tcp_mss() and tcp_mss_update() so that tcp_mtudisc() could
re-use the same code.
In case we return early and got a metricptr to pass the hostcache
info back to the caller we need to initialize the data to a defined
state (zero it) as tcp_hc_get() would do if there was no hit.
Without that the caller would check on random stack garbage which
could lead to undefined results.
This only affected tcp_mss() if there was no routing entry for the peer,
tcp_mtudisc() was not affected.
MFC after: 2 months (along with r182851)
NATM needs 'struct in_addr' to compile, which is a problem on its own
but include in.h for now if we have NATM but neither INET or INET6.
MFC after: 2 months
the sc does not have 'an_have_rssimap' variable.
Add an ANCACHE check to poperly hide the case and make an(4)
compile without INET.
MFC after: 2 months
Because the TTY hooks interface was not finished when I imported the
MPSAFE TTY layer, I had to disconnect the snp(4) driver. This snp(4)
implementation has been sitting in my P4 branch for some time now.
Unfortunately it still doesn't use the same error handling as snp(4)
(returning codes through FIONREAD), but it should already be usable.
I'm committing this to SVN, hoping someone else could polish off its
rough edges. It's always better than having a broken driver sitting in
the tree.
To prevent it from compiling without INET and INET6 we should put
an explicit #error in there like we have in other files,
but not rely on an unused variable.
MFC after: 2 months
Note that these changes will not make the driver work on powerpc, but it should fix at least the i386/amd64 cases.
Obtained from: //depot/projects/usb/src/sys/dev/usb2/wlan/if_zyd2.c#20
Noticed by: jeli, ed
vnode in question does not need to be held. All the data structures used
during the name lookup are protected by the global name cache lock.
Instead, the caller merely needs to ensure a reference is held on the
vnode (such as vhold()) to keep it from being freed.
In the case of procfs' <pid>/file entry, grab the process lock while we
gain a new reference (via vhold()) on p_textvp to fully close races with
execve(2).
For the kern.proc.vmmap sysctl handler, use a shared vnode lock around
the call to VOP_GETATTR() rather than an exclusive lock.
MFC after: 1 month
flag. Specifically, if two threads race to create a dirhash for a
directory, then one might already have created a private dirhash
structure (and locked it) when it realizes the directory now has a
structure and tries to lock that one.
that includes significant features and SMP safety.
This commit includes a more or less complete rewrite of the *BSD USB
stack, including Host Controller and Device Controller drivers and
updating all existing USB drivers to use the new USB API:
1) A brief feature list:
- A new and mutex enabled USB API.
- Many USB drivers are now running Giant free.
- Linux USB kernel compatibility layer.
- New UGEN backend and libusb library, finally solves the "driver
unloading" problem. The new BSD licensed libusb20 library is fully
compatible with libusb-0.1.12 from sourceforge.
- New "usbconfig" utility, for easy configuration of USB.
- Full support for Split transactions, which means you can use your
full speed USB audio device on a high speed USB HUB.
- Full support for HS ISOC transactions, which makes writing drivers
for various HS webcams possible, for example.
- Full support for USB on embedded platforms, mostly cache flushing
and buffer invalidating stuff.
- Safer parsing of USB descriptors.
- Autodetect of annoying USB install disks.
- Support for USB device side mode, also called USB gadget mode,
using the same API like the USB host side. In other words the new
USB stack is symmetric with regard to host and device side.
- Support for USB transfers like I/O vectors, means more throughput
and less interrupts.
- ... see the FreeBSD quarterly status reports under "USB project"
2) To enable the driver in the default kernel build:
2.a) Remove all existing USB device options from your kernel config
file.
2.b) Add the following USB device options to your kernel configuration
file:
# USB core support
device usb2_core
# USB controller support
device usb2_controller
device usb2_controller_ehci
device usb2_controller_ohci
device usb2_controller_uhci
# USB mass storage support
device usb2_storage
device usb2_storage_mass
# USB ethernet support, requires miibus
device usb2_ethernet
device usb2_ethernet_aue
device usb2_ethernet_axe
device usb2_ethernet_cdce
device usb2_ethernet_cue
device usb2_ethernet_kue
device usb2_ethernet_rue
device usb2_ethernet_dav
# USB wireless LAN support
device usb2_wlan
device usb2_wlan_rum
device usb2_wlan_ral
device usb2_wlan_zyd
# USB serial device support
device usb2_serial
device usb2_serial_ark
device usb2_serial_bsa
device usb2_serial_bser
device usb2_serial_chcom
device usb2_serial_cycom
device usb2_serial_foma
device usb2_serial_ftdi
device usb2_serial_gensa
device usb2_serial_ipaq
device usb2_serial_lpt
device usb2_serial_mct
device usb2_serial_modem
device usb2_serial_moscom
device usb2_serial_plcom
device usb2_serial_visor
device usb2_serial_vscom
# USB bluetooth support
device usb2_bluetooth
device usb2_bluetooth_ng
# USB input device support
device usb2_input
device usb2_input_hid
device usb2_input_kbd
device usb2_input_ms
# USB sound and MIDI device support
device usb2_sound
2) To enable the driver at runtime:
2.a) Unload all existing USB modules. If USB is compiled into the
kernel then you might have to build a new kernel.
2.b) Load the "usb2_xxx.ko" modules under /boot/kernel having the same
base name like the kernel device option.
Submitted by: Hans Petter Selasky hselasky at c2i dot net
Reviewed by: imp, alfred
Also: Change the initialisation of the command string to a static
initialiser. Verify it against the output of umass.c when being sent a
command using 'camcontrol eject da0' to a Bulk-Only device.
This should make those devices work that need a SCSI eject command to
switch to modem mode (Novatel 950D and others).
chdir(), chroot(), eaccess(), fpathconf(), fstat(), fstatfs(), lseek()
(when figuring out the current size of the file in the SEEK_END case),
pathconf(), readlink(), and statfs() system calls.
Submitted by: ups (mostly)
Tested by: pho
MFC after: 1 month
Really, the concept of holdcnt in the struct mount is rappresented by
the mnt_ref (which prevents the type-stable structure from being
"recycled) handled through vfs_ref() and vfs_rel().
On this optic, switch the holdcnt acquisition into an emulated vfs_ref()
(and subsequent release into vfs_rel()).
Discussed with: kib
Tested by: pho
The smb library in userspace already knows how to deal with this type of
cloning.
This also corrects a leak in which the netsmb kernel module could not be
unloaded if device nodes had been stat'd but not open'd.
Discussed with: kib
and server. This replaces the RPC implementation of the NFS client and
server with the newer RPC implementation originally developed
(actually ported from the userland sunrpc code) to support the NFS
Lock Manager. I have tested this code extensively and I believe it is
stable and that performance is at least equal to the legacy RPC
implementation.
The NFS code currently contains support for both the new RPC
implementation and the older legacy implementation inherited from the
original NFS codebase. The default is to use the new implementation -
add the NFS_LEGACYRPC option to fall back to the old code. When I
merge this support back to RELENG_7, I will probably change this so
that users have to 'opt in' to get the new code.
To use RPCSEC_GSS on either client or server, you must build a kernel
which includes the KGSSAPI option and the crypto device. On the
userland side, you must build at least a new libc, mountd, mount_nfs
and gssd. You must install new versions of /etc/rc.d/gssd and
/etc/rc.d/nfsd and add 'gssd_enable=YES' to /etc/rc.conf.
As long as gssd is running, you should be able to mount an NFS
filesystem from a server that requires RPCSEC_GSS authentication. The
mount itself can happen without any kerberos credentials but all
access to the filesystem will be denied unless the accessing user has
a valid ticket file in the standard place (/tmp/krb5cc_<uid>). There
is currently no support for situations where the ticket file is in a
different place, such as when the user logged in via SSH and has
delegated credentials from that login. This restriction is also
present in Solaris and Linux. In theory, we could improve this in
future, possibly using Brooks Davis' implementation of variant
symlinks.
Supporting RPCSEC_GSS on a server is nearly as simple. You must create
service creds for the server in the form 'nfs/<fqdn>@<REALM>' and
install them in /etc/krb5.keytab. The standard heimdal utility ktutil
makes this fairly easy. After the service creds have been created, you
can add a '-sec=krb5' option to /etc/exports and restart both mountd
and nfsd.
The only other difference an administrator should notice is that nfsd
doesn't fork to create service threads any more. In normal operation,
there will be two nfsd processes, one in userland waiting for TCP
connections and one in the kernel handling requests. The latter
process will create as many kthreads as required - these should be
visible via 'top -H'. The code has some support for varying the number
of service threads according to load but initially at least, nfsd uses
a fixed number of threads according to the value supplied to its '-n'
option.
Sponsored by: Isilon Systems
MFC after: 1 month
allocating resources to read the CIS. I'm not sure when this changed,
but it is totally wrong. Also, add a minor improvement to the
debugging.
This should help everybody trying to run dumpcis on atheros wireless
card as well.
MFC after: 2 days
right... Good thing the size was ignored...
Where this macro is used, there's no reason to do it anyway. There
seems to have been some old-time confusion between the CIS pointer
definition, and the BAR definitions at the base of this bug.
compiled into the main AMR driver. It's code that is nice to have but not
required for normal operation, and it is reported to cause problems for some
people.
usable for newer CPUs. The new value allows 2 x quad core configuration
dumps to fit within the initial buffer without reallocations.
Approved by: gnn (mentor) (older version)
Pointed out by: rdivacky
dropping the connection when the requested service isn't available, or
we may try to release a lock that isn't locked.
This prevents an assertion failure when trying to mount a non-present
share using smbfs with INVARIANTS; a lock order reversal warning that
immediately follows is not yet fixed.
Reported by: attilio
MFC after: 3 days
For an unknown reason the touch pad of my PowerBook generates button 5
events when you operate it. This causes the adb_mouse code to convert
them to button 2 events, which is not what we want.
Add a new flag, AMS_TOUCHPAD, which is used to distinguish the touch
pad. When set, don't convert button events of unknown buttons to the
last button.
There are still three problems left with respect to user input:
- The mouse button events are not properly processed when the touch pad
isn't touched.
- The arrow keys on the keyboard don't work inside X11.
- The power button isn't handled by the kernel, similar to the ACPI
power button on i386/amd64.
Approved by: nwhitehorn
Make the ISA bus keep track of more PNP details. Plus a minor style
fix while I'm here. More could be done here, but except for some SBCs
that don't have ACPI, there's limited value to anybody in doing so.
use process ID as ACPI thread ID. Concurrent requests with equal thread
IDs broke ACPI mutexes operation causing unpredictable errors including
AE_AML_MUTEX_NOT_ACQUIRED that I have seen.
Use kernel thread ID instead of process ID for ACPI thread.
- Implement real draining for vfs consumers by not relying on the
mnt_lock and using instead a refcount in order to keep track of lock
requesters.
- Due to the change above, remove the mnt_lock lockmgr because it is now
useless.
- Due to the change above, vfs_busy() is no more linked to a lockmgr.
Change so its KPI by removing the interlock argument and defining 2 new
flags for it: MBF_NOWAIT which basically replaces the LK_NOWAIT of the
old version (which was unlinked from the lockmgr alredy) and
MBF_MNTLSTLOCK which provides the ability to drop the mountlist_mtx
once the mnt interlock is held (ability still desired by most consumers).
- The stub used into vfs_mount_destroy(), that allows to override the
mnt_ref if running for more than 3 seconds, make it totally useless.
Remove it as it was thought to work into older versions.
If a problem of "refcount held never going away" should appear, we will
need to fix properly instead than trust on such hackish solution.
- Fix a bug where returning (with an error) from dounmount() was still
leaving the MNTK_MWAIT flag on even if it the waiters were actually
woken up. Just a place in vfs_mount_destroy() is left because it is
going to recycle the structure in any case, so it doesn't matter.
- Remove the markercnt refcount as it is useless.
This patch modifies VFS ABI and breaks KPI for vfs_busy() so manpages and
__FreeBSD_version will be modified accordingly.
Discussed with: kib
Tested by: pho
a little refinement, but is good enough to commit as is.
# Should look to see if I should move swab(3) into the kernel or just
# provide the unoptimized routine here.
Reviewed by: marcel@
whatever template was used to create this driver. It is not
necessary, and wouldn't work anyway since (a) this device will never
be in a cardbus tin-can and (b) the driver isn't even PCI, but instead
a built-in NIC on the IDT RC32434 on its internal bus.
record queue, so move the offset field from the per-record
audit_pipe_entry structure to the audit_pipe structure.
Now that we support reading more than one record at a time, add a
new summary field to audit_pipe, ap_qbyteslen, which tracks the
total number of bytes present in a pipe, and return that (minus
the current offset) via FIONREAD and kqueue's data variable for
the pending byte count rather than the number of bytes remaining
in only the first record.
Add a number of asserts to confirm that these counts and offsets
following the expected rules.
MFC after: 2 months
Sponsored by: Apple, Inc.
We often run into these very high column numbers when we run curses
applications, because they don't print any newlines. This messes up the
table output of `pstat -t'. If these numbers get really high, they
aren't of any use to the reader anyway. Convert them to `99999' when
they run out of bounds.
One of the pieces of code that I had left alone during the development
of the MPSAFE TTY layer, was tty_cons.c. This file actually has two
different functions:
- It contains low-level console input/output routines (cnputc(), etc).
- It creates /dev/console and wraps all its cdevsw calls to the
appropriate TTY.
This commit reimplements the second set of functions by moving it
directly into the TTY layer. /dev/console is now a character device node
that's basically a regular TTY, but does a lookup of `si_drv1' each time
you open it. d_write has also been changed to call log_console().
d_close() is not present, because we must make sure we don't revoke the
TTY after writing a log message to it.
Even though I'm not convinced this is in line with the future directions
of our console code, it is a good move for now. It removes recursive
locking from the top half of the TTY layer. The previous implementation
called into the TTY layer with Giant held.
I'm renaming tty_cons.c to kern_cons.c now. The code hardly contains any
TTY related bits, so we'd better give it a less misleading name.
Tested by: Andrzej Tobola <ato iem pw edu pl>,
Carlos A.M. dos Santos <unixmania gmail com>,
Eygene Ryabinkin <rea-fbsd codelabs ru>
Right now ams_read() uses cv_wait() to wait for new data to arrive on
the mouse device. This means that when you run `cat /dev/ams0', it
cannot be interrupted directly. After you press ^C, you first need to
move the mouse before cat will quit. Make this function use
cv_wait_sig(), which allows it to be interrupted directly.
Reviewed by: nwhitehorn
cable tuning. This has helped in some installations for hardware
deployed by a former employer. Made optional because the lists aren't
full of complaints about these cards... even when they were wildly
popular.
Reviewed by: attilio@, jhb@, trhodes@ (all an older version of the patch)
read(2), which meant that records longer than the buffer passed to read(2)
were dropped. Instead take the approach of allowing partial reads to be
continued across multiple system calls more in the style of streaming
character device.
This means retaining a record on the per-pipe queue in a partially read
state, so maintain a current offset into the record. Keep the record on
the queue during a read, so add a new lock, ap_sx, to serialize removal
of records from the queue by either read(2) or ioctl(2) requesting a pipe
flush. Modify the kqueue handler to return bytes left in the current
record rather than simply the size of the current record.
It is now possible to use praudit, which used the standard FILE * buffer
sizes, to track much larger record sizes from /dev/auditpipe, such as
very long command lines to execve(2).
MFC after: 2 months
Sponsored by: Apple, Inc.
processes exits at the same time. The linux_emuldata structure is freed
but p->p_emuldata is left as a dangling pointer to the just freed memory.
The check for W_EXIT in the loop scanning the child processes isn't safe
since the state of the child process can change right afterwards. Lock
the process and check the W_EXIT before delivering signal.
Submitted by: tegge
Reviewed by: davidxu
MFC after: 1 week
within an object that a mapping refers to. fileid and fsid are inode/dev
for vnodes. (Linux procfs has these and valgrind is really unhappy
without them.) I believe I didn't change the size of the struct.
on G4 machines. On the assumption that most people using FreeBSD on Apple
hardware are not using serial consoles, set boot1's output to screen. This
should be revisited. While here, reduce verbosity of boot1.
pipe has overflowed, drop the newest, rather than oldest, record. This
makes overflow drop behavior consistent with memory allocation failure
leading to drop, avoids touching the consumer end of the queue from a
producer, and lowers the CPU overhead of dropping a record by dropping
before memory allocation and copying.
Obtained from: Apple, Inc.
MFC after: 2 months
protecting the list of audit pipes, and a per-pipe mutex protecting the
queue.
Likewise, replace the single global condition variable used to signal
delivery of a record to one or more pipes, and add a per-pipe condition
variable to avoid spurious wakeups when event subscriptions differ
across multiple pipes.
This slightly increases the cost of delivering to audit pipes, but should
reduce lock contention in the presence of multiple readers as only the
per-pipe lock is required to read from a pipe, as well as avoid
overheading when different pipes are used in different ways.
MFC after: 2 months
Sponsored by: Apple, Inc.
mutex, as it's rarely changed but frequently accessed read-only from
multiple threads, so a potentially significant source of contention.
MFC after: 1 month
Sponsored by: Apple, Inc.
capabilities reported by the ap. These need to be cross-checked
against the local configuration in the vap. Previously we were
only checking the ap capabilities which meant that if an ap reported
it was ff-capable but we were not setup to use them we'd try to do
ff aggregation and drop the frame.
There are a number of problems to be fixed here but applying this
fix immediately as the problem causes all traffic to stop (and has
not workaround).
Reported by: Ashish Shukla
access control checks in mac_bsdextended are not in the same
namespace as the MBI_ flags used in ugidfw policies, so add an
explicit conversion routine to get from one to the other.
Obtained from: TrustedBSD Project
sdhci supports up to 65535 blocks transfers, at91_mci - one block.
Enable multiblock operations disabled before to follow at91_mci driver
limitations.
Reviewed by: imp@
dump of detected ULE CPU topology. This dump can be used to check the
topology detection and for general system information.
An example of CPU topology dump is:
kern.sched.topology_spec: <groups>
<group level="1" cache-level="0">
<cpu count="8" mask="0xff">0, 1, 2, 3, 4, 5, 6, 7</cpu>
<flags></flags>
<children>
<group level="2" cache-level="0">
<cpu count="4" mask="0xf">0, 1, 2, 3</cpu>
<flags></flags>
</group>
<group level="2" cache-level="0">
<cpu count="4" mask="0xf0">4, 5, 6, 7</cpu>
<flags></flags>
</group>
</children>
</group>
</groups>
Reviewed by: jeff
Approved by: gnn (mentor)
while doing the block store workaround so we restore the correct
floating-point registers state in case of nested floating-point
operations resulting from nested interrupts. This allows the
VIS-based block copy/zero functions to be used on machines
requiring this workaround. Alternatively, we could take care of
saving the floating-point registers here, which would be more
inefficiently though and also involves turning off interrupts.
- It turns out that the SCZ_PCI_DMA_SYNC register doesn't work
like the TOMXMS_PCI_DMA_SYNC_PEND one (but more like the
corresponding register in of Hummingbird and Sabre bridges)
and writing the INO of the respective device to it causes a
Safari bus error. However, due to the Schizo errata I-23,
SCZ_PCI_DMA_SYNC can't be used as intended either, so remove
consistent DMA syncing for Schzio bridges for now, which means
that add-on cards with non-"sun4u compliant" (whatever that
means exactly) PCI-PCI-bridges should be avoided until the
proper workaround is implemented. [1]
Reported by: Michael Moll [1]
This should fix q_time overflow, which happens after 2^32/(86400*hz) days of
uptime (~50days for hz = 1000).
q_time overflow cause following:
- traffic shaping may not work in 'fast' mode (not enabled by default).
- incorrect average queue length calculation in RED/GRED algorithm.
NB: due to ABI change this change is not applicable to stable.
PR: kern/128401
to add more V* constants, and the variables changed by this patch were often
being assigned to mode_t variables, which is 16 bit.
Approved by: rwatson (mentor)
memory mappings when the MAC label on a process changes, to
mac_proc_vm_revoke(),
It now also acquires its own credential reference directly from the
affected process rather than accepting one passed by the the caller,
simplifying the API and consumer code.
Obtained from: TrustedBSD Project
vpollinfo with vnode interlock. Fully initialize vpollinfo before putting
pointer to it into vp->v_pollinfo.
Discussed with: dwhite
Tested by: pho
MFC after: 1 week
that they operate directly on credentials: mac_proc_create_swapper(),
mac_proc_create_init(), and mac_proc_associate_nfsd(). Update policies.
Obtained from: TrustedBSD Project
be a no-op request, and why this might have to change if we want to allow
leaving a partition someday.
Obtained from: TrustedBSD Project
MFC after: 3 days
"ticks" goes negative. This breaks the signed comparison in softclock.
This causes sleep() to never wake up, tcp to stop, etc etc. This is
bad(TM). Use the SEQ_LT() method from tcp's sequence number comparisons.
driver (rev 1.3), by Joerg Sonnenberger.
Note: This change is untested as I do not own the hardware. Let me know
if things work or do not work for you by sending me the output dmesg (and
usbctl -f /dev/usbX if possible). Thanks.
for the BCM5714 revision A0 when in a multi-port configuration
and unconditionally for the remainder of the class of BCM575X
and beyond chips.
This was prodded by mav and is based on a suggestion and a
patch submitted by jhb.
Reviewed by: jhb
MFC after: 2 months
V9 stack bias so we no longer need to add it in db_backtrace()
and stack_capture() respectively. This also reverts r182018,
which kludged around the resulting unaligned access.
- Sync the sun4v versions of db_trace.c and stack_machdep.c with
the sparc64 ones and fix some style bugs.
MFC after: 3 days
rs400/rs480 should clear the RADEON_BUS_MASTER_DIS bit. This should get
the rs485 IGP chips going again.
Approved by: jhb (mentor)
Obtained from: drm git master
