Don't call malloc() and free() while in the debugger and unwinding
to get a stacktrace. This does not work even with M_NOWAIT when we
have WITNESS and is generally a bad idea (pointed out by bde@). We
allocate an 8K heap for use by the unwinder when ddb is active. A
stack trace roughly takes up half of that in any case, so we have
some room for complex unwind situations. We don't want to waste too
much space though. Due to the nature of unwinding, we don't worry
too much about fragmentation or performance of unwinding while in
the debugger. For now we have our own heap management, but we may
be able to leverage from existing code at some later time.
While here:
o Make sure we actually free the unwind environment after unwinding.
This fixes a memory leak.
o Replace Doug's license with mine in unwind.c and unwind.h. Both
files don't have much, if any, of Doug's code left since the EPC
syscall overhaul and the import of the unwinder.
o Remove dead code.
o Replace M_NOWAIT with M_WAITOK for all remaining malloc() calls.
Fix two incorrect uses of sizeof: we need to divide the size of the buffer
by sizeof(wchar_t) to get the number of wide characters it contains.
Remove the !hardway micro-optimisation from the CT_INT case to avoid
having to fix it for wide characters.
Fix a signedness problem in zstty_cncheckc(): when no character is ready,
-1 should be returned, but it was assigned to an uint8_t (which is
extended to an int to form the return value), causing 255 to be returned
instead.
I was so happy I found the semi-colon from hell that I didn't
notice another typo in the same line. This typo makes libthr unuseable,
but it's effects where counter-balanced by the extra semicolon, which
made libthr remarkably useable for the past several months.
luigi [Fri, 4 Jul 2003 21:42:32 +0000 (21:42 +0000)]
Implement the 'ipsec' option to match packets coming out of an ipsec tunnel.
Should work with both regular and fast ipsec (mutually exclusive).
See manpage for more details.
Submitted by: Ari Suutari (ari.suutari@syncrontech.com)
Revised by: sam
MFC after: 1 week
jeff [Fri, 4 Jul 2003 19:59:00 +0000 (19:59 +0000)]
- Parse the cpu topology map in sched_setup().
- Associate logical CPUs on the same physical core with the same kseq.
- Adjust code that assumed there would only be one running thread in any
kseq.
- Wrap the HTT code with a ULE_HTT_EXPERIMENTAL ifdef. This is a start
towards HyperThreading support but it isn't quite there yet.
Make jexec duplicate the actions of the shell searching for an
executable file even if the specified action/filename does not
contain a '/' character; convert execv() to execvp().
Submitted by: Christian S.J. Peron <maneo@bsdpro.com>
PR: bin/54109
Don't hardcore PATH into BINMAKE; the latter should only be
comprised of the path to a make(1) binary (possibly the one
built by the "make" target in this Makefile), and a path to
a fresh share/mk. The idea is to allow "make release" pick
up the right "make" binary, if one exists.
This fixes release.5 I broke with the last commit here; the
second PATH here was overriding the right one from WMAKEENV
while rebuilding the "build-tools" for crunched binaries.
- Ensure that the busdma API won't do deferred loads by using the
BUS_DMA_NOWAIT flag, since the code can't handle this.
- Use NULL, NULL for the lockfunc and lockfuncarg parameters of
bus_dma_tag_create() since deferred loads can't happen now.
The em(4) driver has been converted to busdma and doesn't use
vtophys() anymore, so remove the alpha hack which defines
vtophys() to alpha_XXX_dmamap().
In setpgrp(), don't assume a pgrp won't exist if the provided pgid is the same
as the target process' pid, it may exist if the process forked before leaving
the pgrp.
Thix fixes a panic that happens when calling setpgid to make a process
re-enter the pgrp with the same pgid as its pid if the pgrp still exists.
Avoid using the global offset table to get the address of _DYNAMIC in
rtld. When _DYNAMIC is referenced normally from C the global offset
table is used implicitly, but newer versions of binutils don't initialize
it statically in the binary, so this doesn't work until rtld is relocated,
which _DYNAMIC is needed for... So, as on other systems with the same
problem, we disassemble a call instruction to _DYNAMIC in order to get
its address.
Due to extreme bogusness in the pci bus layer, these drivers were
forced to do slightly bogus power state manipulation. However, this
is one of those features that is preventing further progress, so mark
them as BURN_BIRDGES like I did for the drivers in sys/dev/...
This, like the other change, are a no-op unless you have BURN_BRIDGES
in your kernel.
Background: pmap_object_init_pt() premaps the pages of a object in
order to avoid the overhead of later page faults. In general, it
implements two cases: one for vnode-backed objects and one for
device-backed objects. Only the device-backed case is really
machine-dependent, belonging in the pmap.
This commit moves the vnode-backed case into the (relatively) new
function vm_map_pmap_enter(). On amd64 and i386, this commit only
amounts to code rearrangement. On alpha and ia64, the new machine
independent (MI) implementation of the vnode case is smaller and more
efficient than their pmap-based implementations. (The MI
implementation takes advantage of the fact that objects in -CURRENT
are ordered collections of pages.) On sparc64, pmap_object_init_pt()
hadn't (yet) been implemented.
Signals sent specifically to a particular thread must
be delivered to that thread, regardless of whether it
has it masked or not.
Previously, if the targeted thread had the signal masked,
it would be put on the processes' siglist. If
another thread has the signal umasked or unmasks it before
the target, then the thread it was intended for would never
receive it.
This patch attempts to solve the problem by requiring callers
of tdsignal() to say whether the signal is for the thread or
for the process. If it is for the process, then normal processing
occurs and any thread that has it unmasked can receive it.
But if it is destined for a specific thread, it is put on
that thread's pending list regardless of whether it is currently
masked or not.
The new behaviour still needs more work, though. If the signal
is reposted for some reason it is always posted back to the
thread that handled it because the information regarding the
target of the signal has been lost by then.
Update mdoc(7) to the current version. From ChangeLog:
2003-07-01 Ruslan Ermilov <ru@FreeBSD.org>
* tmac/doc.tmac (doc-do-func, doc-do-func-args): Don't print a comma
after `/*' and `*/'.
Fix spacing.
(Fn, Fo): Reduce indentation in synopsis.
* tmac/doc-common (doc-check-depth): New macro.
(doc-end-macro, Sh, Ss): Use it.
(Cd): Fix behaviour in synopsis.
(In): Make it parsed and callable.
If not in the synopsis, represent the C header file enclosed in
angle brackets.
(doc-str-Rv-std-suffix, doc-str-Rv-stds-suffix, doc-str-Rv-std0):
Use minus, not hyphen.
All current uses of pci_set_powerstate are bogus, at least in theory.
However, they are presently necessary due to bigger bogusness in the
pci bus layer not doing the right thing on suspend/resume or on
initial device probe. This is exactly the sort of thing that the
BURN_BRIDGES option was invented for. Mark all of them as
BURN_BRIDGES. As soon as I have the powerstate stuff properly
integrated into the pci bus code, I intend to remove all these
workarounds.
Use make(1) instead of a shell script to implement the checkdpadd target.
This is simpler, and is easy to do now that make(1) supports substituting
regexps. Fixed missing '$' anchor in the regexp. Use less cryptic names
for temporary variables.
o style(9) fixes
- Reordered #includes
- Only include <sys/types.h>, not it and <sys/cdefs.h>
o style.Makefile(5) fixes
- No SRCS= line when only one src file with same name as program
o Use warn()/errx() instead of fprintf()
- Integrated patch from Philippe Charnier <charnier@xp11.frmug.org>
gordon [Wed, 2 Jul 2003 16:16:49 +0000 (16:16 +0000)]
Move mount_portalfs, mount_smbfs, and mount_nwfs from sbin to usr.sbin.
They don't have alot of reason to be in sbin and contribute to library
bloat in the dynamic case. If you are using any of these filesystem
type to hold your /usr, please seek professional help.
- Add comments about the maintenance of the per-thread list of contested
locks held by each thread.
- Fix a bug in the original BSD/OS code where a contested lock was not
properly handed off from the old thread to the new thread when a
contested lock with more than one blocked thread was transferred from
one thread to another.
- Don't use an atomic operation to write the MTX_CONTESTED value to
mtx_lock in the aforementioned special case. The memory barriers and
exclusion provided by sched_lock are sufficient.
- Use the new resource_disabled() helper function to see if devices are
disabled.
- Change the apm driver to match the acpi driver's behavior by checking to
see if the device is disabled in the identify routine instead of in the
probe routine. This way if the device is disabled it is never created.
Note that a few places (ips(4), Alpha SMP) used "disable" instead of
"disabled" for their hint names, and these hints must be changed to
"disabled". If this is a big problem, resource_disabled() can always be
changed to honor both names.
Add a resource_disabled() helper function that returns true (non-zero) if
a specified resource has been disabled via a non-zero 'disabled' hint and
false otherwise.
harti [Wed, 2 Jul 2003 13:53:41 +0000 (13:53 +0000)]
Make the bus_dma_tag_create use NULL for the lock arguments. We are
careful to call all map_load calls with BUS_DMA_NOWAIT because we
really don't want some PDUs to wait while others go out - ATM guarantees
the ordering of cells and also of PDUs (within one VC, that is). With
BUS_DMA_NOWAIT bus_dmamap_load should never return EINPROGRESS.
Make the tag used for transmission buffers one larger than the maximum
AAL5 PDU (65535). This is needed, because all PDU sizes need to be round
up to multiple of four for the card and PDUs that are just below the
maximum size will be rounded up to 65536
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