implemented with macros. This patch improves code readability. Reasoning
behind kbdd_* is a "keyboard discipline".
List of macros is supposed to be complete--all methods of keyboard_switch
should have their respective macros from now on.
Functionally, this code should be no-op. My intention is to leave current
behaviour of code as is.
Glanced at by: rwatson
Reviewed by: emax, marcel
Approved by: cognet
machine-independent support for superpages. (The earlier part was
the rewrite of the physical memory allocator.) The remainder of the
code required for superpages support is machine-dependent and will
be added to the various pmap implementations at a later date.
Initially, I am only supporting one large page size per architecture.
Moreover, I am only enabling the reservation system on amd64. (In
an emergency, it can be disabled by setting VM_NRESERVLEVELS to 0
in amd64/include/vmparam.h or your kernel configuration file.)
argument. It allows ppp, mpd or any other node consumer to request
connection to specified access concentrator.
Proposed by: Alexander A. Burylov <burylov@mail.ru>
"month names" -> "months names"
typo
"Long months names (alternative)" or "in alternative form" ->
"(without case ending)"
"Long months names" -> "Long months names (as in a date)"
to not confuse developers on what purpose those sections are
Without it, code has two problems:
- behaviour of the old and new [l]stat are different with regard of
the /compat/linux
- directly accessing the userspace data from the kernel asks for
the panics.
Reported and tested by: Peter Holm
Reviewed by: rdivacky
MFC after: 3 days
the inode, do the rollback in case the allocation failed (due to
insufficient free space or quota limits). But, the code does leaves the
buffers corresponding to the inoirect blocks on the vnode bufobj list.
This causes several assertion failures (for instance, "ffs_truncate3"
in ffs_truncate()) to fail, and could result in the indirect block
aliasing problem, like writing the context of such blocks to random
disk location.
Remove the buffers from the bufobj properly.
Reported and tested by: Peter Holm
Reviewed by: tegge
MFC after: 3 weeks
sys/types.h polution that FreeBSD has in one of its include files.
Since this is a bootstrap tool, include more than is strictly
necessary for FreeBSD.
we would leak a saved screen for every other package we tried to install
that listed perl as one of its dependencies. When installing things
like gnome and kde that wound up being a LOT of leaked memory.
Insta-MFC request coming so this can be tested as part of 6.3-RC2...
Testing help from: kris
paragraph clarifying that portsnap does not behave the same way as
cvs and cvsup where local modifications are concerned.
Submitted by: peter
Feet shot: peter, kris, obrien, + many others
order to support re-use of multi-chunk unused regions within the DSS for
huge allocations. This generalization is important to correct function
when mmap-based allocation is disabled.
Avoid zeroing re-used memory in the DSS unless it really needs to be
zeroed.
too small for today's standards. While loading packages sysinstall
blows past this by a LOT but I think (hope...) that's caused by other
bugs. I'll look more into why sysinstall's memory use has gotten so
out of control as it loads packages but independent of that there really
is no reason to leave the limits on datasize and stacksize in place. And
they can cause problems for some of the things "modern packages" might
be doing via pkg_add which gets run by sysinstall and would inherit the
limits.
Another insta-MFC probably coming, this is holding up 6.3-RC2. Sysinstall's
memory use is so out of control it blows past the current limit before it
finishes loading either of the meta-packages kde or gnome...
so that the results end up in the DDB output stream rather than the
console output stream.
This should likely also be done for the vprint() function it calls.
MFC after: 3 months
This option just adds complexity and the new implementation no longer
will support it, so axing it now that it is unused is probabilly the
better idea.
FreeBSD version is bumped in order to reflect the KPI breakage introduced
by this patch.
In the ports tree, kris found that only old OSKit code uses it, but as
it is thought to work only on 2.x kernels serie, version bumping will
solve any problem.
memory is acquired from the system via sbrk(2) and/or mmap(2). By default,
use sbrk(2) only, in order to support traditional use of resource limits.
Additionally, when both options are enabled, prefer the data segment to
anonymous mappings, in order to coexist better with large file mappings
in applications on 32-bit platforms. This change has the potential to
increase memory fragmentation due to the linear nature of the data
segment, but from a performance perspective this is mitigated by the use
of madvise(2). [1]
Add the ability to interpret integer prefixes in MALLOC_OPTIONS
processing. For example, MALLOC_OPTIONS=lllllllll can now be specified as
MALLOC_OPTIONS=9l.
Reported by: [1] rwatson
Design review: [1] alc, peter, rwatson
with the interlock), owner of the lock should be only curthread or at
least, for its limited usage, NULL which identifies LK_KERNPROC.
The thread "extra argument" for the lockmgr interface is going to be
removed in the near future, but for the moment, just let kernel run for
some days with this check on in order to find potential deadlocking
places around the kernel and fix them.
p_candebug() will return EAGAIN which, if the other process never
leaves execve(), will result in the sysctl spinning and never returning
to userspace. Processes should always eventually leave execve(), but
spinning in kernel while we wait is bad for countless reasons, and
particularly harmful if execve() itself is deadlocked.
Possibly we should return another error, or return a marker indicating
the thread is in execve() so it can be reported that way in userspace.
Reported by: kris
rather than the memcmp() which is used for regular dumps: the
textdump string is one character shorter, so we need to stop
comparing at the end of the string.
Use independent version checking logic for architecture-specific
version number vs. textdump version number, as the version sequences
may (someday) differ.
Run into by: rrs
equivalent with this and so operate the switch.
That call is the only one remaining LK_EXCLUPGRADE consumer and removing
it will prepare the ground for LK_EXCLUPGRADE axing and further
lockmgr improvements.
Discussed with: jeff, ups
Recycle the vm object's "pg_color" field to represent the color of the
first virtual page address at which the object is mapped instead of the
color of the object's first physical page. Since an object may not be
mapped, introduce a flag "OBJ_COLORED" that indicates whether "pg_color"
is valid.
mounted FS' problems. These are more along the lines of 'avoiding an
avoidable panic' than a complete solution to removable devices. We
now close the barn door after the horse has gotten lose and has been
hit by a truck, as it were. The barn no longer catches fire in this
case, but the horse is still dead :-).
The vfs_bio.c fix causes us not to put a failed write back into the
dirty pool if the error returned was ENXIO. In that case, the buffer
is treated like any other clean buffer that's being retured. ENXIO
means the device isn't there anymore and will never be there again in
the future, so retrying is futile.
The vfs_mount.c fix treats 'ENXIO' as success for unmounting a file
system. If the device is gone, retrying later won't help and we'll
never be able to unmount the device.
These two are part of a larger patch set submitted by the author. The
other patches will be forth coming. I added comments to these two
patches.
Submitted by: Henrik Gulbrandsen
Reviewed by: phk@
PR: usb/46176 (partial)
Due to a typo, setting NANO_DATASIZE=-1 resulted in the data slice
being the same size as entire image instead of the size of the
remaining space on the image.
- Fix detection of overcommit of the slices.
This fix mainly result in a nicer error than when newfs etc. tries to
write beyond the end of the disk image.
MFC after: 2 weeks
X-MFC after: RELENG_7 is open again
and follow the letter of the POSIX specification.
- Moving a directory to an existing non-empty directory will now fail,
as required.
- Improve consistency and remove some style bugs of earlier versions.
This version passes all tests of tools/regression/bin/mv/regress.sh 1.6
Reviewed by: bde
MFC after: 1 month
functions. It is easily triggered by running routed, and, I expect, by
running any other daemon that uses routing sockets.
Reviewed by: net@
MFC after: 1 week
- Use the correct offsets when copying out the results of PCIOCGETCONF_OLD.
This happened to not affect the 64-bit architectures because there the
addition of pc_domain to struct pcisel didn't change the overall size of
struct pci_conf. [1]
- Always copy the name and unit information to conf_old so it's also part
of the output once this information is cached in dinfo.
- Use the correct type for flags in struct pci_match_conf_old. This
change is more or less cosmetic though.
Reported and tested by: bde [1]
Reviewed by: imp
MFC after: 3 days
Committed from: 24C3
If a mouse has both a wheel and a Z direction we report both.
XXX Due to tradition the wheel is reported as the Z direction (and the Z
direction as W).
Now Apple's Mighty Mouse is fully supported, except the X11 mouse driver
doesn't know what to do with the new coordinate.
MFC after: 3 months
Approved by: njl (mentor), imp
some stock formulas for use.
Update ddb(4) to reference the textdump(4) page, list the textdump
commands, and suggest using them with scripts and output capture.
Update HISTORY section.
Hook up textdump(4) to build.
MFC after: 3 months
dump using mechanically generated/extracted debugging output rather than
a simple memory dump. Current sources of debugging output are:
- DDB output capture buffer, if there is captured output to save
- Kernel message buffer
- Kernel configuration, if included in kernel
- Kernel version string
- Panic message
Textdumps are stored in swap/dump partitions as with regular dumps, but
are laid out as ustar files in order to allow multiple parts to be stored
as a stream of sequentially written blocks. Blocks are written out in
reverse order, as the size of a textdump isn't known a priori. As with
regular dumps, they will be extracted using savecore(8).
One new DDB(4) command is added, "textdump", which accepts "set",
"unset", and "status" arguments. By default, normal kernel dumps are
generated unless "textdump set" is run in order to schedule a textdump.
It can be canceled using "textdump unset" to restore generation of a
normal kernel dump.
Several sysctls exist to configure aspects of textdumps;
debug.ddb.textdump.pending can be set to check whether a textdump is
pending, or set/unset in order to control whether the next kernel dump
will be a textdump from userspace.
While textdumps don't have to be generated as a result of a DDB script
run automatically as part of a kernel panic, this is a particular useful
way to use them, as instead of generating a complete memory dump, a
simple transcript of an automated DDB session can be captured using the
DDB output capture and textdump facilities. This can be used to
generate quite brief kernel bug reports rich in debugging information
but not dependent on kernel symbol tables or precisely synchronized
source code. Most textdumps I generate are less than 100k including
the full message buffer. Using textdumps with an interactive debugging
session is also useful, with capture being enabled/disabled in order to
record some but not all of the DDB session.
MFC after: 3 months
