rick@snowhite.cis.uoguelph.ca:
1. Clear B_NEEDCOMMIT in nfs_write to make sure that dirty data is
correctly send to the server. If a buffer was dirtied when it was in
the B_DELWRI+B_NEEDCOMMIT state, the state of the buffer was left
unchanged and when the buffer was later cleaned, just a commit rpc was
made to the server to complete the previous write. Clearing
B_NEEDCOMMIT ensures that another write is made to the server.
2. If a server returned a server (for whatever reason) returned an
answer to a write RPC that implied that fewer bytes than requested
were written, bad things would happen.
3. The setattr operation passed on the atime in stead of the mtime to
the server. The fix is trivial.
4. XIDs always started at 0, but this caused some servers (older DEC
OSF/1 3.0 so I've been told) who had very long-lasting XID caches to
get confused if, after a reboot of a BSD client, RPCs came in with a
XID that had in the past been used before from that client. Patch is
to use the current time in seconds as a starting point for XIDs. The
patch below is not perfect, because it requires the root fs to be
mounted first. This is because of the check BSD systems do, comparing
FS time to system time.
Reviewed by: Bruce Evans, Terry Lambert.
Obtained from: frank@fwi.uva.nl (Frank van der Linden) via rick@snowhite.cis.uoguelph.ca
(author's explaination):
Bit 15 is the flag to request a transmit complete interrupt. The
driver was apparently written to minimize interrupts, and if not for a
3-COM design quirk, everything would be just ducky.
Prior to loading the outbound packet into the FIFO, the driver checks
to see if there's enough space to contain the packet. If not, the
driver requests a transmit-available interrupt when there is
sufficient room. Unfortunately, the card is continuing to process the
prior FIFO, and by the time the driver sets the threshold for a
transmit available interrupt, the space is already available. When
this occurs, the 3COM card ignores the interrupt request, and the
driver is hung waiting for an interrupt that will never occur.
There's probably a more elegant solution, but requesting the transmit
complete interrupt was the easiest to implement. An alternative fix
might be to check free FIFO space again, after requesting the transmit
available interrupt, but I haven't bothered pursuing this. Since the
patch, my 3C590 (PCI, same FIFO interface as 3C509) has been rock
solid.
Submitted by: mevans@candle.com (Mike Evans)
pulled up already. This bug can cause the first packet from a source
to a group to be corrupted when it is delivered to a process listening
on the mrouter.
2.1.5-RELEASE). This will obviously be set "for real" closer to the time.
(some ports use this to differentiate the two branches /dev/kmem kernel
architectures. This exact same procedure happened in November last year
for the 2.1 RELEASE as well.)
Fixed initialization of pipe_pgid - don't default to pid 0 (swapper) for
SIGIO.
Added comments about other implicit initializations, mostly for struct
stat.
Fixed initialization of st_mode. S_IFSOCK was for when pipes were sockets.
It is probably safe to fix the bogus S_ISFIFO() now that pipes can be
distinguished from sockets in all cases.
Don't return ENOSYS for inappropriate ioctls.
for big positive adjustments. The existence of big adjustments may
be a bug (it's not documented...) but there was no good reason for
the asymmetric behaviour.
Reviewed by: wollman
is only appropriate to use in the special environment of start.S (real
mode plus some conventions about not saving registers), and asm.h is
supposed to be for generic macros.
Removed some unnecessary parentheses.
Finished the constant poisoning that was begun in rev.1.14. Consts
aren't very poisonous (or useful) unless -Wcast-qual is in CFLAGS,
and it isn't in the default CFLAGS.
pr_usrreq mechanism which was poorly designed and error-prone. This
commit renames pr_usrreq to pr_ousrreq so that old code which depended on it
would break in an obvious manner. This commit also implements the new
interface for TCP, although the old function is left as an example
(#ifdef'ed out). This commit ALSO fixes a longstanding bug in the
TCP timer processing (introduced by davidg on 1995/04/12) which caused
timer processing on a TCB to always stop after a single timer had
expired (because it misinterpreted the return value from tcp_usrreq()
to indicate that the TCB had been deleted). Finally, some code
related to polling has been deleted from if.c because it is not
relevant t -current and doesn't look at all like my current code.
This stuff should not be too destructive if the IPDIVERT is not compiled in..
be aware that this changes the size of the ip_fw struct
so ipfw needs to be recompiled to use it.. more changes coming to clean this up.
apm_setup.s was storing apm_cs16_base and apm_cs32_base addresses in
each others slots, and apm.c was reversing the result so the bugs
cancelled out, but the code looked wrong.
No functional differences unfortunately.
Submitted by: dave edmondson <davided@sco.com>
purpose, other than to get in the way of the ARP table and cause
"can't allocate llinfo" errors.
This change may cause gated or routed to start complaining when adding
such routes. If so, these programs will need to be fixed to not try
to add these routes.
Reviewed by: wollman
- State when we've reached the limit on a particular rule in the kernel logfile
- State when a rule or all rules have been zero'd.
This gives a log of all actions that occur w/regard to the firewall
occurances, and can explain why a particular break-in attempt might not
get logged due to the limit being reached.
Reviewed by: alex
the high kernel calls into a protocol stack to perform requests on the
user's behalf. We replace the pr_usrreq() entry in struct protosw with a
pointer to a structure containing pointers to functions which implement
the various reuqests; each function is declared with the correct type and
number of arguments. (This is unlike the current scheme in which a quarter
of the requests take arguments of type other than (struct mbuf *) and the
difference is papered over with casts.) There are a few benefits to this
new scheme:
1) Arguments are passed with their correct types, and null-pointer dummies
are no longer necessary.
2) There should be slightly better caching effects from eliminating
the prximity to extraneous code and th switch in pr_usrreq().
3) It becomes much easier to change the types of the arguments to something
other than `struct mbuf *' (e.g.,pushing the work of sosend() into
the protocol as advocated by Van Jacobson).
There is one principal drawback: existing protocol stacks need to
be modified. This is alleviated by compatibility code in
uipc_socket2.c and uipc_domain.c which emulates the new interface
in terms of the old and vice versa.
This idea is not original to me. I read about what Jacobson did
in one of his papers and have tried to implement the first steps
towards something like that here. Much work remains to be done.
type identification code out of machdep.c and into a new file of its
own. Hopefully other grot can be moved out of machdep.c as well
(by other people) into more descriptively-named files.
performance to LRU or worse when RSS limiting takes effect. Also,
make an end condition in the active queue scan more efficient in the
case where pages are removed from the active queue as a side effect
of a pmap operation.
Add code to the boot blocks to allow the user to place default boot strings
on block 1 of the disk (2nd block), should the correct magic numbers be present.
If the correct options are used it will 'delete' the name used from block1,
thereby assuring that if the boot fails it won't be stuck in an infinite loop.
the boot strings are set by the utility "nextboot"
(not yet checked in, but being tested.)
By default these changes should have no effect on existing installations
and if compiled without the NAMEBLOCK option should be essentially identical
to the old ones.
based on the HD64570 chip. Both the 1 and 2 port cards is supported.
Line speeds of up to 2Mbps is possible. At this speed about 95% of the
bandwidth is usable with 486DX processors.
The standard FreeBSD sppp code is used for the link level layer. The
default protocol used is PPP. The Cisco HDLC protocol can be used by
adding "link2" to the ifconfig line in /etc/sysconfig or where ever
ifconfig is run.
At the moment only the X.21 interface is tested. The others may need
tweaks to the clock selection code.
to information from a single process causes hangs. Specifically, this
fixes problems (hangs) with concurrent ps commands, when the system is under
heavy memory load.
Reviewed by: davidg
but not there. The extent of the object lock is expanded to be over the
range that it is needed. Additionally, clean up the code so that it conforms
to better coding style.
Testing with the high frequency of 20000 Hz (to find problems) only found
the problem that this frequency is too high for slow i386's.
Disable interrupts while setting the timer frequency. This was unnecessary
before rev.1.57 and forgotten in rev.1.57. The critical (i8254) interrupts
are disabled in another way at boot time but not in the sysctl to change
the frequency.
sleeps before being swapped out. The time is increased from 4 secs to
10 secs. Originally I had decreased it from 20 to 4, but that is a bit
severe. 20 is too long though.
The i386 pmap module uses a special area of kernel virtual memory for mapping
of page tables pages when it needs to modify another process's virtual
address space. It's called the 'alternate page table map'. There is only one
of them and it's expected that only one process will be using it at once and
that the operation is atomic.
When the merged VM/buffer cache was implemented over a year ago, it became
necessary to rundown VM pages at I/O completion. The unfortunate and
unforeseen side effect of this is that pmap functions are now called at bio
interrupt time. If there happend to be a process using the alternate page
table map when this I/O completion occurred, it was possible for a different
process's address space to be switched into the alternate page table map -
leaving the current pmap process with the wrong address space mapped when
the interrupt completed. This resulted in BAD things happening like pages
being mapped or removed from the wrong address space, etc.. Since a very
common case of a process modifying another process's address space is during
fork when the kernel stack is inserted, one of the most common manifestations
of this bug was the kernel stack not being mapped properly, resulting in a
silent hang or reboot. This made it VERY difficult to troubleshoot this bug
(I've been trying to figure out the cause of this for >6 months). Fortunately,
the set of conditions that must be true before this problem occurs is
sufficiently rare enough that most people never saw the bug occur. As I/O
rates increase, however, so does the frequency of the crashes. This problem
used to kill wcarchive about every 10 days, but in more recent times when
the traffic exceeded >100GB/day, the machine could barely manage 6 hours of
uptime.
The fix is to make certain that no process has the pages mapped that are
involved in the I/O, before the I/O is started. The pages are made busy, so
no process will be able to map them, either, until the I/O has finished.
This side-steps the issue by still allowing the pmap functions to be called
at interrupt time, but also assuring that the alternate page table map won't
be switched.
Unfortunately, this appears to not be the only cause of this problem. :-(
Reviewed by: dyson
was due to non-aligned 64K transfers taking 17 pages. We currently
do not support >16 page transfers. The transfer is unfortunately truncated,
but since buffers are usually malloced, this is a problem only once in
a while. Savecore is a culprit, but tar/cpio usually aren't. This
is NOT the final fix (which is likely a bouncing scheme), but will at
least keep the system from crashing.
Re-enables the RSS limiting, and the routine is now tail-recursive,
making it much more safe (eliminates the possiblity of kernel stack
overflow.) Also, the RSS limiting is a little more intelligent about
finding the likely objects that are pushing the process over the limit.
Added some sysctls that help with VM system tuning.
New sysctl features:
1) Enable/disable lru pageout algorithm.
vm.pageout_algorithm = 0, default algorithm that works
well, especially using X windows and heavy
memory loading. Can have adverse effects,
sometimes slowing down program loading.
vm.pageout_algorithm = 1, close to true LRU. Works much
better than clock, etc. Does not work as well as
the default algorithm in general. Certain memory
"malloc" type benchmarks work a little better with
this setting.
Please give me feedback on the performance results
associated with these.
2) Enable/disable swapping.
vm.swapping_enabled = 1, default.
vm.swapping_enabled = 0, useful for cases where swapping
degrades performance.
The config option "NO_SWAPPING" is still operative, and
takes precedence over the sysctl. If "NO_SWAPPING" is
specified, the sysctl still exists, but "vm.swapping_enabled"
is hard-wired to "0".
Each of these can be changed "on the fly."
too late to be used in all cases. It should probably be created (early)
in bsd.kmod.mk for all LKMs.
Use cc instead of cpp | as for the same reasons as in the kernel makefile.
CFLAGS isn't split up as well as in the kernel makefile, but cc doesn't
pass compiler warning flags to cpp, so there is no need to split it.
Fixed profiling of system times. It was pre-4.4Lite and didn't support
statclocks. System times were too small by a factor of 8.
Handle deferred profiling ticks the 4.4Lite way: use addupc_task() instead
of addupc(). Call addupc_task() directly instead of using the ADDUPC()
macro.
Removed vestigial support for PROFTIMER.
switch.s:
Removed addupc().
resourcevar.h:
Removed ADDUPC() and declarations of addupc().
cpu.h:
Updated a comment. i386's never were tahoe's, and the deferred profiling
tick became (possibly) multiple ticks in 4.4Lite.
Obtained from: mostly from NetBSD
multiplication in addupc() overflowed for addresses >= 256K, assuming
the usual profil(2) scale parameter of 0x8000. addupc() will go away
soon.
Submitted by: John Polstra <jdp@polstra.com>
via an ioctl (MOUSE_ACTION).
Fixed a couple of bugs (destructive cursor, uncut, jitter).
Now applications can use the mouse via the MOUSE_MODE ioctl, its
possible to have a signal sent on mouseevents, makeing an event loop
in the application take over mouseevents.
Reviewed by: phk
Reject the addition of rules that will never match (for example,
1.2.3.4:255.255.255.0). User level utilities specify the policy by either
masking the IP address for the user (as ipfw(8) does) or rejecting the
entry with an error. In either case, the kernel should not modify chain
entries to make them work.
media in all cases.
Remove SCSI_2_MAX_DENSITY_CODE definition and rely on the device to tell
us if we attempt an invalid setting.
Closes PR 1245.
Submitted by: fredriks@mcs.com a few changes by me.
LKM'ness. ACTUALLY_LKM_NOT_KERNEL is supposed to be so ugly that it
only gets used until <machine/conf.h> goes away. bsd.kmod.mk should
define a better-named general macro for this. Some places use
PSEUDO_LKM. This is another bad name.
Makefile:
Added IPFIREWALL_VERBOSE_LIMIT option (commented out).
broadcast and multicast routes, otherwise they will be expired by
arptimeout after a few minutes, reverting to " (incomplete)". This makes
the work done by rev 1.27 stay around until the route itself is deleted.
This is mainly cosmetic for 'arp' and 'netstat -r'.
things tend to work better if you write the settings to the correct
register.. (*blush*). This subtle bug has been haunting me for ages, and
will solve a few problems that have been reported to me.
Also, take a shot at fixing the serial BREAK processing, what was there
before never really worked. (There is a PR on this I think)
Real support for a Textmode mousecursor, works by reprogramming the
charset. Together with this support for cut&paste in text mode.
To use it a userland daemon is needed (moused), which provides
the interface to the various mice protokols.
Bug fixes here and there, all known PR's closed by this update.
for ARP requests.
The NetBSD version of this patch (see NetBSD PR kern/2381) has this change
already. This should close our PR kern/1140 .
Although it's not quite what he submitted, I got the idea from him so
Submitted by: Jin Guojun <jin@george.lbl.gov>
/kernel: in_rtqtimo: adjusted rtq_reallyold to 1066
/kernel: in_rtqtimo: adjusted rtq_reallyold to 710
inside of #ifdef DIAGNOSTIC to avoid the support questions from folks
asking what this means.
gary went a little overboard on commenting out unused variables.
Variables needed for ISO, LLC and NETATALK
were only enabled for ISO & LLC.. so NETATALK bombed.
is only used by the icu support modules and by a few drivers that know
too much about the icu (most only use it to convert `n' to `IRQn'). isa.h
is only used by ioconf.c and by a few drivers that know too much about
isa addresses (a few have to, because config is deficient).
with multiple entries as follows:
start address, end address, resident pages in range, private pages
in range, RW/RO, COW or not, (vnode/device/swap/default).
compiler warnings which occur if you don't have 'options DEVFS' in
your kernel config file:
../../kern/kern_descrip.c: In function `fildesc_drvinit':
../../kern/kern_descrip.c:1103: warning: unused variable `fd'
../../kern/kern_descrip.c: At top level:
../../kern/kern_descrip.c:1095: warning: `devfs_token_stdin' defined but not use
d
../../kern/kern_descrip.c:1096: warning: `devfs_token_stdout' defined but not us
ed
../../kern/kern_descrip.c:1097: warning: `devfs_token_stderr' defined but not us
ed
../../kern/kern_descrip.c:1098: warning: `devfs_token_fildesc' defined but not u
sed
to match (pc98/random_machdep.c probably requires a similar change). This
is a problem area for the PC98 merge - all PC98 ifdefs in <machine/*.h> are
kludges to work around incorrect layering.
disklabel(8) to the kernel (dsopen()). Drivers should initialize the
hardware values (rpm, interleave, skews). Drivers currently don't do
this, but it usually doesn't matter since rotational position stuff is
normally disabled.
Original version by John Hay.
Simplified timestamp code by reading the time exactly when necessary.
This may slow down the interrupt handler with extra calls to microtime(),
but only in bad configurations - the input fifo should normally be
disabled if timestamps on input are being used, since otherwise the
timestamp won't be precisely associated with any particular input event.
The interrupt handler remains slowed down by one test and branch for
each input (and now DCD change) event - avoiding this is not practical
yet.
The simplifications also fixed:
- timestamps for input sometimes being clobbered by output and modem
status interrupts.
- valid timestamps not being available unless the port is configured with
vector siointrts. siointrts no longer exists.
- compiler warnings about siointr* in some configurations.
Simplified timestamp and probe code by depending on recent changes in
microtime() and DELAY() to preserve the interrupt enable flag.
enable flag instead of enable_intr() to restore it to its usual state.
getit() is only called from DELAY() so there is no point in optimising
its speed (this wasn't so clear when it was extern), and using
enable_intr() made it inconvenient to call DELAY() from probes that need
to run with interrupts disabled.
instead of sti to it restore to its usual state. pushfl/popfl is
actually faster in protected mode on Pentiums (4+3 cycles instead of 9),
and using sti made it extremely inconvenient to call microtime() from
fast interrupt handlers. pushfl/popfl is a couple of cycles slower than
sti on 486's and a couple more cycles slower on 386's, but the relative
cost of using it is not large since microtime() has to use slow i/o
instructions on the old cpus.
1) Make it much less likely to miss a wakeup in vm_page_free_wakeup
2) Create a new entry point into pmap: pmap_ts_referenced, eliminates
the need to scan the pv lists twice in many cases. Perhaps there
is alot more to do here to work on minimizing pv list manipulation
3) Minor improvements to vm_pageout including the use of pmap_ts_ref.
4) Major changes and code improvement to pmap. This code has had
several serious bugs in page table page manipulation. In order
to simplify the problem, and hopefully solve it for once and all,
page table pages are no longer "managed" with the pv list stuff.
Page table pages are only (mapped and held/wired) or
(free and unused) now. Page table pages are never inactive,
active or cached. These changes have probably fixed the
hold count problems, but if they haven't, then the code is
simpler anyway for future bugfixing.
5) The pmap code has been sorely in need of re-organization, and I
have taken a first (of probably many) steps. Please tell me
if you have any ideas.
1) Remove potential race conditions on waking up in vm_page_free_wakeup
by making sure that it is at splvm().
2) Fix another bug in vm_map_simplify_entry.
3) Be more complete about converting from default to swap pager
when an object grows to be large enough that there can be
a problem with data structure allocation under low memory
conditions.
4) Make some madvise code more efficient.
5) Added some comments.
. use new-style options
. introduce an option OD_AUTO_TURNOFF
. try to use the native geometry as reported by the drive instead of
a faked on -- MOs do have a ``classical'' geometry
. make the scsi_start_unit() actually working
. some cosmetic fixes
Submitted by: akiyama@kme.mei.co.jp (Shunsuke Akiyama)
exit and cleanup. the 'ps' command assumes that there are always 'nproc'
processes on the lists and will walk off the end without checking if not,
causing ddb to trap during the 'ps' command.
parameters to printf() using the "D" format. (Why this even worked on
my box during testing I don't know, but as soon as I powered it on/off
it quite working.)
using the existing files using the existing PCCARD support. Now that
this is in place I would like to fixup the PCCARD hooks and remove the
if_zp driver. At this point, we support everything we used to support
*AND MORE* with the PCCARD code.
Submitted by: Naoki Hamada <nao@sbl.cl.nec.co.jp> (via the Nomad release)
[ This works on both my 3C589B and 3C589C ]
My 3C509B-COMBO works fine with the following patch. Switching between
UTP and BNC is quite easy. (Just type 'ifconfig ep0 link1 -link2' or 'ifconifg
ep0 link2 -link1'.)
[ I tested this with the additional PC-CARD patches and it works on both
connectors on my 3C589B and 3C589C ]
Reviewed by: nate
Submitted by: Naoki Hamada <nao@sbl.cl.nec.co.jp>
to PF_ROUTE) from NRL's IPv6 distribution, heavily modified by me for
better source layout, formatting, and textual conventions. I am told
that this code is no longer under active development, but it's a useful
hack for those interested in doing work on network security, key management,
etc. This code has only been tested twice, so it should be considered
highly experimental.
Obtained from: ftp.ripe.net
Poul mentioned that he thought this was some kind of timing problem, and
that started me thinking. After a little poking around, I found that
nfs_timer() was completely disabled when NFS_NOSERVER was #defined.
But after looking at nfs_timer(), it seemed like it was something
required by both the client and server code, and disabling it outright
just didn't seem to make any sense. Parts of it relate only to the
NFS server side code, so I disabled those, but I re-enabled the rest
of the function and made sure that it would be called from nfs_init()
(in nfs_subs.c).
With nfs_timer() re-enabled, everything seems to work again. The only
other changes I made were to #ifdef away some variable declarations
in the NFS_NOSERVER case so that gcc would stop complaining about
unused variables.
Reviewed by: phk
Submitted by: Bill Paul <wpaul@skynet.ctr.columbia.edu>
All new code is "#ifdef PC98"ed so this should make no difference to
PC/AT (and its clones) users.
Ok'd by: core
Submitted by: FreeBSD(98) development team
It is called from copyin and copyout.
The new routine is conditioned on I586_CPU and I586_FAST_BCOPY, so you
need
options "I586_FAST_BCOPY"
(quotes essenstial) in your kernel config file.
Also, if you have other kernel types configured in your kernel, an
additional check to make sure it is running on a Pentium is inserted.
(It is not clear why it doesn't help on P6s, it may be just that the
Orion chipset doesn't prefetch as efficiently as Tritons and friends.)
Bruce can now hack this away. :)
process won't possibly block before filling in the fsnode pointer (v_data)
which might be dereferenced during a sync since the vnode is put on the
mnt_vnodelist by getnewvnode.
Pointed out by Matt Day <mday@artisoft.com>
process won't possibly block before filling in the fsnode pointer (v_data)
which might be dereferenced during a sync since the vnode is put on the
mnt_vnodelist by getnewvnode.
it assumes all of the data exists in the kernel. Also, fix
sysctl_new-kernel (unused until now) which had reversed operands to
bcopy().
Reviewed by: phk
Poul writes:
... actually the lock/sleep/wakeup cruft shouldn't be needed in the
kernel version I think, but just leave it there for now.
Smart Capture Card is a kind of video capture card, PCMCIA type II,
and made by IBM Japan co.. Unfortunately, it is sold in Japan now.
The device driver is working on the latest pccard-test package by
Tatsumi HOSOKAWA and bsd-nomads. Some applications are also working.
For example, xscc is a video moniter client on X-window, vic-2.7b2 is
a video conference tool.
We have a contract with IBM Japan. From the contract, we cannot release
the source code exept the permit of IBM Japan. But I think they will
permit us in few weeks.
Reviewed by: phk
Requested by: ohashi@mickey.ai.kyutech.ac.jp (Takeshi OHASHI)
code improvements include significant simplification of the reservation
of the swap pager control blocks for reads. Add a panic for an inconsistent
swap pager control block count.
reserving "cached" pages before waking up the pageout daemon. This will reserve
the faulted page, and keep the system from thrashing itself to death given
this condition.
- Log ICMP type during verbose output.
- Added IPFIREWALL_VERBOSE_LIMIT option to prevent denial of service
attacks via syslog flooding.
- Filter based on ICMP type.
- Timestamp chain entries when they are matched.
- Interfaces can now be matched with a wildcard specification (i.e.
will match any interface unit for a given name).
- Prevent the firewall chain from being manipulated when securelevel
is greater than 2.
- Fixed bug that allowed the default policy to be deleted.
- Ability to zero individual accounting entries.
- Remove definitions of old_chk_ptr and old_ctl_ptr when compiling
ipfw as a lkm.
- Remove some redundant code shared between ip_fw_init and ipfw_load.
Closes PRs: 1192, 1219, and 1267.
mode when this occurs and allow the target to complete the transaction.
Force a retry on overruns since they are usually caused by termination or
cable problems.
sometimes already been released at the time pcaclose() is called, but
this is now prevented from deadlocking by checking for a running timer
at the start of pca_wait().
At least, i can now play xboing again with pcaudio, this used to hang
the entire system previously within a few seconds.
is conditionalized by the INCLUDE_CONFIG_FILE option in your kernel config
file and is not turned on by default.
Submitted-By: Bill Pechter <pechter@shell.monmouth.com>
when compiled with -DDIAGNOSTIC. Almost all significant SCO binaries
I've run call an unsupported function and run correctly. Given that
they aren't needed, the messages only clutter up the logfiles and
console.
released until the file system was unmounted. This bug also affected
kern/vfs_syscalls.c but was fixed in rev.1.18 and rev.1.20 there.
Reviewed by: davidg
any statclock ticks. Pretend that all the time up to the first
statclock tick is system time. . This makes a difference mainly for
benchmarks that test short-lived processes - the user and system
times for processes that each lived for about 1ms only added up to
about 10% of the real time even when there was very little interrupt
activity.
Break the printing of a quad_t variable correctly.
alias `pcb_cr3' instead. That is still one alias too many, but is convenient
for me since I've replaced the tss in the pcb by a few scalar variables in
the pcb.
altfmt was abused to sometimes screw up the disassembly of the bytes
following unconditional jump instructions. Gas doesn't pad to a longword
boundary like the comment said - that is the programmer's responsibility.
wdp_fixedcyl) gives it directly. wdp_removedcyl is "reserved" except
in ancient ATA-1 drafts and shouldn't be added. This fixes PR 1288.
Changed some fields and comments in struct wdparams to match a less-
ancient ATA draft.
Fixed bit number for `rdy' in status string.
gcc only inlines memcpy()'s whose count is constant and didn't inline
these. I want memcpy() in the kernel go away so that it's obvious that
it doesn't need to be optimized. Now it is only used for one struct
copy in si.c.
gcc only inlines memcpy()'s whose count is constant and didn't inline
these. I want memcpy() in the kernel go away so that it's obvious that
it doesn't need to be optimized. Now it is only used for one struct
copy in si.c.
queue in vm_fault.
Move the PG_BUSY in vm_fault to the correct place.
Remove redundant/unnecessary code in pmap.c.
Properly block on rundown of page table pages, if they are busy.
I think that the VM system is in pretty good shape now, and the following
individuals (among others, in no particular order) have helped with this
recent bunch of bugs, thanks! If I left anyone out, I apologize!
Stephen McKay, Stephen Hocking, Eric J. Chet, Dan O'Brien, James Raynard,
Marc Fournier.
name string. This function should be rewritten to deal with more than
10 units of a given type.
Pointed out by: jmf@free-gate.com (Jean-Marc Frailong)
(I fixed it slightly differently)
name (ie; strip off the domain). Given a hostname 'fooey.bar.com', the
previous code returned a system name of 'fooey.ba', instead of the more
correct 'fooey'. SCO uses 'uname' for many things, including some of
it's socket code so this patch is necessary for running certain legacy
SCO apps. :)
A variant of this code has been running on my box for 2 months now.
some problems with the page-table page management code, since it can't
deal with the notion of page-table pages being paged out or in transit.
Also, clean up some stylistic issues per some suggestions from
Stephen McKay.
circumstances, caused perfectly good connections to be dropped. This
happened for connections over a LAN, where the retransmit timer
calculation TCP_REXMTVAL(tp) returned 0. If sending was blocked by flow
control for long enough, the old code dropped the connection, even
though timely replies were being received for all window probes.
Reviewed by: W. Richard Stevens <rstevens@noao.edu>
code without the B_READ flag being set. This is a problem when the
data is not cached, and the result will be a bogus attempted write.
Submitted by: Kato Takenori <kato@eclogite.eps.nagoya-u.ac.jp>
process during pmap_copy. This minimizes unnecessary swapping or creation of
swap space. If there is a hold_count flaw for page-table
pages, clear the page before freeing it to lessen the chance of a system
crash -- this is a robustness thing only, NOT a fix.
operations don't work with FICTITIOUS pages.) Also, close a window
between PG_MANAGED and pmap_enter that can mess up the accounting of
the managed flag. This problem could likely cause a hold_count error
for page table pages.
close some windows that are opened up by page table allocations. The
prefaulting code no longer uses hold counts, but now uses the busy
flag for synchronization.
before clearing the SELTO interrupt. We used to do this in the past, but
this outb got lost.
Turn ATN on ourselves as appropriate during a parity error instead of relying
on ENAUTOATNP.
Don't use a loop in RESTART_SEQUENCER. Its not necessary.
ansi and traditional cpp.
The nesting rules of macros are different, which required some changes.
Use __CONCAT(x,y) instead of /**/.
Redo some comments to use /* */ rather than "# comment" because the ansi
cpp cares about those, and also cares about quote matching.
cc -c -x assembler-with-cpp -o file.o file.s.
This means that any cpp fatal errors will now be detected, as well as
running *.s files through an ansi cpp instead of a traditional cpp.
(fixes to allow *.s to compile under both ansi and traditional to follow)
queue corruption problems, and to apply Gary Palmer's code cleanups.
David Greenman helped with these problems also. There is still
a hang problem using X in small memory machines.
to be allocated at boot time. This is an expensive option, as they
consume physical ram and are not pageable etc. In certain situations,
this kind of option is quite useful, especially for news servers that
access a large number of directories at random and torture the name cache.
Defining 5000 or 10000 extra vnodes should cut down the amount of vnode
recycling somewhat, which should allow better name and directory caching
etc.
This is a "your mileage may vary" option, with no real indication of
what works best for your machine except trial and error. Too many will
cost you ram that you could otherwise use for disk buffers etc.
This is based on something John Dyson mentioned to me a while ago.
on the baud rate, dont get upset if it's been hung up by setting B0.
Instead, sleep for a short time, as the host controller takes a while
to go through the state changes.
seeing SPIORDY and checking for PHASEMIS. My last change turned out to
be less cosmetic then I thought.
Pointed out by: Satoshi Asami <asami@cs.berkeley.edu>,
Faried Nawaz <fn@pain.csrv.uidaho.edu
NetBSD/OpenBSD support Submitted by:Noriyuki Soda <soda@sra.co.jp>,
Pete Bentley <pete@demon.net>,
Charles M. Hannum <mycroft@mit.edu>,
Theo de Raadt <deraadt@theos.com>
Add a panic for attempts to page in a non paged out SCB.
Re-order some of the interrupt routine for better performance.
NetBSD/OpenBSD support Submitted by:Noriyuki Soda <soda@sra.co.jp>,
Pete Bentley <pete@demon.net>,
Charles M. Hannum <mycroft@mit.edu>,
Theo de Raadt <deraadt@theos.com>
Cosmetic change to p_mesgout code so that it "looks" the same as what
is done in the inb* routines.
NetBSD/OpenBSD support Submitted by:Noriyuki Soda <soda@sra.co.jp>,
Pete Bentley <pete@demon.net>,
Charles M. Hannum <mycroft@mit.edu>,
Theo de Raadt <deraadt@theos.com>
case where blocking can occur, thereby giving other process's a chance
to modify the queue where a page resides. This could cause numerous
process and system failures.
that the datastructures needed to support the swap pager can take
enough space to fully deplete system memory, and cause a deadlock.
This change keeps large objects from being filled with dirty pages
without the appropriate swap pager datastructures. Right now,
default objects greater than 1/4 the size of available system memory
are converted to swap objects, thereby eliminating the risk of deadlock.
phasemiss to sneak by without detection. This should fix the
Wide/Narrow boot problems that have been reported since this bug
caused the driver ignore a narrow target rejecting wide negotiation.
a condition when blocking can occur, and the daemon did not check properly
for a page remaining on the expected queue. Additionally, the inactive
target was being set much too large for small memory machines. It is now
being calculated based upon the amount of user memory available on every
pageout daemon run. Another problem was that if memory was very low, the
pageout daemon could fail repeatedly to traverse the inactive queue.
problem. BY MISTAKE, the vm_page_unqueue (or equiv) was removed from the
vm_fault code. Really bad things appear to happen if a page is on a queue
while it is being faulted.
(returns EPERM always, the errno is specified by POSIX).
If you really have a desperate need to link or unlink a directory, you
can use fsdb. :-)
This should stop any chance of ftpd, rdist, "rm -rf", etc from
bugging out and damaging the filesystem structure or loosing races
with malicious users.
Reviewed by: davidg, bde
Kernel Appletalk protocol support
both CAP and netatalk can make use of this..
still needs some owrk but it seemd the right tiime to commit it
so other can experiment.
guru out there can find a way to take advantage of little-endianness to
make this computation more efficient. (I am certain that it can be done,
but haven't managed to make it work myself.)
unconventionally:
If COMPAT_IPFW is not defined, or if it is defined to 1, enable;
otherwise, disable.
This means that these changes actually have no effect on anyone at the
moment. (It just makes it easier for me to keep my code in sync.)
In the future, the `not defined' part of the hack should be eliminated,
but doing this now would require everyone to change their config files.
The same conditionals need to be made in ip_input.c as well for this to
ave any useful effect, but I'm not ready to do that right now.
call of ahc_scsirate. Otherwise, the proper setting may not get set until
the next reconnection/selection.
The saved_queue used to re-order the QINFIFO during error recovery or
certain SCB paging operations should be an array of u_chars not ints.
saved_queue type error pointed out by: Noriyuki Soda <soda@sra.co.jp>
comparing the PTD pointers, they needed to be masked by PG_FRAME, and
they weren't. Also, the "improved" non-386 code wasn't really an
improvement, so I simplified and fixed the code. This might have
caused some of the panics caused by the VM megacommit.
I spent the better part of a day trying to figure out why my
experiment didn't work the way I expected, only to find out that
the router was dropping huge numbers of packets because of PCI bus
priblems. This does not fix the bug that errors are counted as
input packets because my patch doesn't apply cleanly.
to use the full range of settings from 3.6-20MHz on any target.
Remove all Ultra settings except for the top three that are documented
to work. This fixes some problem reports with the last revision of the
driver since at least the 5.7MHz entry doesn't work in Ultra mode.
With this fix from Stephen, we are getting the target fork performance
that I have been trying to attain: P5-166, before the mega-commit: 700-800usecs,
after: 600usecs, with Stephen's fix: 500usecs!!! Also, this could be the
solution of some strange panic problems...
Reviewed by: dyson@freebsd.org
Submitted by: Stephen McKay <syssgm@devetir.qld.gov.au>
snuck in accidentally from the DARTNet kernel. SIOC*RTINFO were an
extended interface to the stock routing table and SIOCGETVIFINF was
an interface for rsvpd to ask the kernel for the list of multicast vif's.
Pointed-out-by: Brian Reichert <reichert@internet.com>
is enabled by having an "device ed0 at isa? [...]" config line.
The first PCI card will get a unit number one higher than the highest
defined for any ISA card of the ED type, e.g. if ed0 and ed1 are
configured, then the PCI cards will be ed2, ed3, ...
BEWARE: If you have configured your kernel as ed0 with the port address
as assigned by the PCI BIOS, then your card will be found by both the
PCI and ISA probes, and bad things may happen. Make sure to restore
the original port address form the GENERIC kernel for the ed0 device!
Reviewed by: davidg
contributions or ideas from Stephen McKay <syssgm@devetir.qld.gov.au>,
Alan Cox <alc@cs.rice.edu>, David Greenman <davidg@freebsd.org> and me:
More usage of the TAILQ macros. Additional minor fix to queue.h.
Performance enhancements to the pageout daemon.
Addition of a wait in the case that the pageout daemon
has to run immediately.
Slightly modify the pageout algorithm.
Significant revamp of the pmap/fork code:
1) PTE's and UPAGES's are NO LONGER in the process's map.
2) PTE's and UPAGES's reside in their own objects.
3) TOTAL elimination of recursive page table pagefaults.
4) The page directory now resides in the PTE object.
5) Implemented pmap_copy, thereby speeding up fork time.
6) Changed the pv entries so that the head is a pointer
and not an entire entry.
7) Significant cleanup of pmap_protect, and pmap_remove.
8) Removed significant amounts of machine dependent
fork code from vm_glue. Pushed much of that code into
the machine dependent pmap module.
9) Support more completely the reuse of already zeroed
pages (Page table pages and page directories) as being
already zeroed.
Performance and code cleanups in vm_map:
1) Improved and simplified allocation of map entries.
2) Improved vm_map_copy code.
3) Corrected some minor problems in the simplify code.
Implemented splvm (combo of splbio and splimp.) The VM code now
seldom uses splhigh.
Improved the speed of and simplified kmem_malloc.
Minor mod to vm_fault to avoid using pre-zeroed pages in the case
of objects with backing objects along with the already
existant condition of having a vnode. (If there is a backing
object, there will likely be a COW... With a COW, it isn't
necessary to start with a pre-zeroed page.)
Minor reorg of source to perhaps improve locality of ref.
1) A spelling error pointed out by Paco Hope.
2) A bug in the range checking routing pointed out by Jim Bray.
3) Enables the setting of frames per second.
Submitted-By: Jim Lowe <james@miller.cs.uwm.edu>
use sd87a or sd237e even if they start at the beginning of the slice.
You can also use sd85c if you prefer, although you need to change the
type field in the disklabel to "4.2BSD".
unreasonable time. I've got a PCI mainboard that simply doesn't grok
it, so continuing with a warning (and a keyboard that's working
nevertheless :) seems to be better than spin-looping forever.
a BIOS was not installed, this will still be true by the time we probe
the chip. We use this heuristic to determine if we should use the left
over scratch ram target settings for controllers that don't have an
SEEPROM. We also "snapshot" the host adapter SCSI id and whether ultra
is enabled or not and use these values if a BIOS was installed. The card
will act as if a BIOS was installed even if there wasn't one if you warm
reboot, but since the scratch ram area is still valid in this case, its
hardly worth the effort of writing a shutdown routing that clears out
the scratch ram. This should make users of motherboard controllers
happy.
channel B first as approriate.
Only reset the SCSI bus if the RESET_SCSI bit of SCSICONF is set. This
makes the aic7xxx driver honor all of the configuration settings availible
in SCSI-Select or the ECU.
Fix a benign bug in the reset code that caused us to always wait a full
second after the chip reset. This should shave some time off the probe.
Bug found by pedrosal@nce.ufrj.br (Pedro Salenbauch)
It seems that only the top three sync rates are doubled when in ultra mode,
so update the syncrates table as appropriate.
Found by "Dan Willis" <dan@plutotech.com> and his SCSI bus analyzer
channel B first as approriate.
Even if the BIOS is diabled, the ECU will still set the primary channel
bit, SCSI ID, RESET_SCSI bit, and BOFF_TIME, so use them.
Change #ifdef linux to #ifdef __linux__
aic7xxx_reg.h:
Remove unneeded BOFF_60BCLOCKS
define CHIPRSTACK to be the same as CHIPRST
define RESET_SCSI and CHANNEL_B_PRIMARY bits
All of these aer used during the setup of adapters.
(PR #1178).
Define a new SO_TIMESTAMP socket option for datagram sockets to return
packet-arrival timestamps as control information (PR #1179).
Submitted by: Louis Mamakos <loiue@TransSys.com>
boundary, which means that it doesn't mark the start of the data
section (which is then inaccessible to the programmer ??).
Hopefully fixes recent locore reboot problems.
the past, since it returns to the old system of allocating mbufs out of
a private area rather than using the kernel malloc(). While this may seem
like a backwards step to some, the new allocator is some 20% faster than
the old one and has much better caching properties.
Written by: John Wroclawski <jtw@lcs.mit.edu>
