Call callout_init() on nd6_slowtimo_ch before setting it going; otherwise,
the flags field will be improperly initialized resulting in inconsistent
operation (sometimes with Giant, sometimes without, et al).
Expand the scope of the socket buffer locks in sopoll() to include the
state test as well as set, or we risk a race between a socket wakeup
and registering for select() or poll() on the socket. This does
increase the cost of the poll operation, but can probably be optimized
some in the future.
This appears to correct poll() "wedges" experienced with X11 on SMP
systems with highly interactive applications, and might affect a plethora
of other select() driven applications.
RELENG_5 candidate.
Problem reported by: Maxim Maximov <mcsi at mcsi dot pp dot ru>
Debugged with help of: dwhite
Temporarily back out revision 1.77. This changed cd9660_getattr() and
cd9660_readdir() to return the address of the file's first data block as
the inode number instead of the address of the directory entry, but
neglected to update cd9660_vget_internal() for the new inode numbering
scheme.
Since the NFS server calls VFS_VGET (cd9660_vget()) with inode numbers
returned through VOP_READDIR (cd9660_readdir()) when servicing a READDIRPLUS
request, these two interfaces must agree on the numbering scheme; failure to
do so caused panics and/or bogus information about the entries to be returned
to clients using READDIRPLUS (Solaris, FreeBSD w/ mount -o rdirplus).
des [Sun, 5 Sep 2004 09:43:47 +0000 (09:43 +0000)]
Device driver for the Cypress CY7C637xx and CY7C640/1xx families of USB
to RS232 bridges, such as the one found in the DeLorme Earthmate USB GPS
receiver (which is the only device currently supported by this driver).
While other USB to serial drivers in the tree rely heavily on ucom, this
one is self-contained. The reason for that is that ucom assumes that
the bridge uses bulk pipes for I/O, while the Cypress parts actually
register as human interface devices and use HID reports for configuration
and I/O.
The driver is not entirely complete: there is no support yet for flow
control, and output doesn't seem to work, though I don't know if that is
because of a bug in the code, or simply because the Earthmate is a read-
only device.
Update release notes:
- Various markup, typo, and wording fixes.
- Use &man.*;.
- Move sound(4) related changes to the multimedia support section.
- Add net.inet.tcp.rfc3042 and net.inet.tcp.rfc3390.
- Unify items which relates to multibyte support of userland
utilities.
Fix two problems with REG_ICASE that were introduced with the addition of
multibyte character support:
- In CHadd(), avoid writing past the end of the character set bitmap when
the opposite-case counterpart of wide characters with values less than
NC have values greater than or equal to NC.
- In CHaddtype(), fix a braino that caused alphabetic characters to be
added to all character classes! (but only with REG_ICASE)
Abstract the handling of dirty stacked registers in ia64_read_reg() and
ia64_write_reg() and call these whenever we read or write registers from
and to memory. This way we correctly read registers from addresses in
the register cache and thus fixes backtraces when the saved registers
(such as rp and ar.pfs) are in dirty stacked registers.
Fix Quad handling on 64-bit architectures. On 64-bit machines, a Quad
also occupies a single slot. There's no need for any special handling
of Quads. While here, remove the silly make_quad() function. We have
the 2 longs on 32-bit machines already lined up in the argument array,
so we can fetch the Quad with a simple cast.
Refactor a bunch of scheduler code to give basically the same behaviour
but with slightly cleaned up interfaces.
The KSE structure has become the same as the "per thread scheduler
private data" structure. In order to not make the diffs too great
one is #defined as the other at this time.
The KSE (or td_sched) structure is now allocated per thread and has no
allocation code of its own.
Concurrency for a KSEGRP is now kept track of via a simple pair of counters
rather than using KSE structures as tokens.
Since the KSE structure is different in each scheduler, kern_switch.c
is now included at the end of each scheduler. Nothing outside the
scheduler knows the contents of the KSE (aka td_sched) structure.
The fields in the ksegrp structure that are to do with the scheduler's
queueing mechanisms are now moved to the kg_sched structure.
(per ksegrp scheduler private data structure). In other words how the
scheduler queues and keeps track of threads is no-one's business except
the scheduler's. This should allow people to write experimental
schedulers with completely different internal structuring.
A scheduler call sched_set_concurrency(kg, N) has been added that
notifies teh scheduler that no more than N threads from that ksegrp
should be allowed to be on concurrently scheduled. This is also
used to enforce 'fainess' at this time so that a ksegrp with
10000 threads can not swamp a the run queue and force out a process
with 1 thread, since the current code will not set the concurrency above
NCPU, and both schedulers will not allow more than that many
onto the system run queue at a time. Each scheduler should eventualy develop
their own methods to do this now that they are effectively separated.
Rejig libthr's kernel interface to follow the same code paths as
linkse for scope system threads. This has slightly hurt libthr's performance
but I will work to recover as much of it as I can.
Thread exit code has been cleaned up greatly.
exit and exec code now transitions a process back to
'standard non-threaded mode' before taking the next step.
Reviewed by: scottl, peter
MFC after: 1 week
Some old tar archives rely on "regular-file-plus-trailing-slash" to
denote a directory. Unfortunately, in the presence of GNU or POSIX
extensions, this code was checking the truncated filename stored in the
regular header rather than the full filename stored in the extended
attribute. As a result, long filenames with '/' in just the right
position would trigger this check and be erroneously marked as
directories. Move the check so it only considers the full filename.
Note: the check can't simply be disabled for archives that contain
these extensions because there are some very broken archivers out
there.
Expand the 4.x -> current updating section. Update to show how to use
make kernel. Update the compatibility slice section. Note about
updating devices in the kernel config file. MAKEOBJDIRPREFIX changes
and mention the port alternative to COMPAT4X=yes. Fix copyright.
Reset the seek pointer to 0 when a file is successfully opened,
since otherwise the initial seek offset will contain the directory
offset of the filesystem block that contained its directory entry.
This bug was mostly harmless because typically the directory is
less than one filesystem block in size so the offset would be zero.
It did however generally break loading a kernel from the (large)
kernel compile directory.
Also reset the seek pointer when a new inode is opened in read_inode(),
though this is not actually necessary now because all callers set
it afterwards.
New release notes (changes in August 2004):
agp(4) AMD64 GART support,
hw.pci.allow_unsupported_io_range removed,
debug.kdb.stop_cpus sysctl,
COMPAT_LINUX32 kernel option on amd64,
mac_bsdextended_firstmatch_enabled sysctl,
mac_bsdextended_logging sysctl,
MP_WATCHDOG kernel option and debug.leak_schedlock sysctl,
NET_WITH_GIANT kernel option and debug.mpsafenet loader tunable,
debug.mpsafevm loader tunable,
vm_map_findspace(9) now uses an O(log n) algorithm,
new ipfw(4) rule "jail",
IPFIREWALL_FORWARD kernel option,
PFIL_HOOKS is now always complied into the kernel,
autofs filesystem and libautofs(3) added,
GEOM_RAID3 geom class and graid3(8) added,
GEOM_UZIP geom class added,
acpidump(8) SSDT tables support,
dd(1) fillchar option,
jail(8) -l option,
OpenSSL VIA C3 PadLock ACE support imported, and
FreeBSD's default X Window System is Xorg now.
Update release notes:
ADAPTIVE_GIANT enabled on i386 by default,
hme(4) now MI,
static linker TLS support,
LIBPTHREAD_PROCESS_SCOPE,
GNU sort updated to a coreutils snapshot as of 2004/08/12,
ISC DHCP client updated to 3.0.1,
lukemftpd updated to a snapshot as of 2004/08/09, and
pf from OpenBSD 3.5-stable.
Enable debug.mpsafevm by default on amd64 and i386. This enables copy-on-
write and zero-fill faults to run without holding Giant. It is still
possible to disable Giant-free operation by setting debug.mpsafevm to 0 in
loader.conf.
Unbreak memcpy(). memcpy() is defined to return the dst argument.
By using r8 instead of r14 to do the swap, we put the dst argument
in the return register. Since bcopy() doesn't clobber r8, we don't
have to do anything else. This fixes ports/textproc/aspell.
Add a workaround to recognise I/_Complex_I as complex arguments. Although
the GCC manual claims that the expression 1.0fi has type float _Complex,
__builtin_types_compatible_p(float _Complex, __typeof__(1.0fi))) yields 0.
merge in if_rl locking because if_re was originally based upon if_rl.
This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c.
This now marks the interrupt MPSAFE along with making the mutex non-recursive.
- move list of supported adapters into a HARDWARE section
- list the Digital EtherWORKS adapter as supported [1]
- properly capitalize (Fast|Gigabit) Ethernet
- bump document date
sos [Fri, 3 Sep 2004 12:10:44 +0000 (12:10 +0000)]
Introduce ata_udelay() that uses tsleep instead of DELAY if possible.
In places where we have long delays that doesn't depend on too accurate
timing, use ata_udelay() instead of DELAY() so we dont uselessly spin
the CPU if not nessesary;
Panic if given a CAM_DATA_PHYS pointer from CAM instead of trying to handle it.
It makes no sense in a PAE environment and is impossible to handle correctly.
This case is also never used right now. This should make the iir(4) driver
ready for PAE.
If the argument to the -r flag starts with a ':' or a '|', don't try to
make sure it is a device. GDB special cases these prefixes and treats
:#### as a tcp port on localhost and executes what ever follows '|'.
Add a BUGS section and copy the wording from mmap(2)'s MAP_NOSYNC,
documenting the obsoleteness of the msync(2) syscall and its single
remaining purpose.
Push Giant deep into vm_forkproc(), acquiring it only if the process has
mapped System V shared memory segments (see shmfork_myhook()) or requires
the allocation of an ldt (see vm_fault_wire()).
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