fanf [Thu, 26 Nov 2009 00:38:13 +0000 (00:38 +0000)]
Fix a performance bug in factor(6).
Check if large factor is prime before applying Pollard's algorithm;
fixes "factor 2147483647111311". Increase base if p-1 algorithm
reaches 1; fixes "factor 99999999999991".
Testcases from David A Bagley <bagleyd@tux.org>.
Fixes from Joseph Myers <jsm@NetBSD.org>.
Problem rediscovered by an attempt to factor my phone number.
A few other incidental fixes: correct a couple of factually incorrect
comments; use ident string macros; move from 4-clause to 3-clause
BSD licence (University of California copyright).
thompsa [Wed, 25 Nov 2009 20:50:43 +0000 (20:50 +0000)]
Disable interrupts after doing early takeover of the usb controller in case usb
isnt actually compiled in (or kldloaded) as the controller could cause spurious
interrupts.
fanf [Wed, 25 Nov 2009 20:23:18 +0000 (20:23 +0000)]
Update unifdef to my upstream version 1.188
Main highlights:
(A) The new -B option compresses blank lines around a deleted section
so that blank lines around "paragraphs" of code don't get doubled.
(B) Lenient evaluation of && and || so that #if expressions can be
evaluated even when some of their sub-expressions cannot be.
(C) The evaluator can now handle macros with arguments.
(D) Portability fixes, especially for unifdefall.
Contributions from:
Ben Hutchings at Solarflare Communications (A and B)
Anders H Kaseorg <andersk@mit.edu> (A and C)
Jonathan Nieder <jrnieder@gmail.com> (D)
attilio [Wed, 25 Nov 2009 15:23:14 +0000 (15:23 +0000)]
Change gcore in order to get rid of the procfs accesses and use FreeBSD's
specific sysctls and ptrace interfaces.
This change switches a bit gcore POLA that is summarized here:
- now gcore can recognize threads within the process and handle dumps
on thread-scope
- the process to be analyzed will be stopped during its gcore run
- gcore may not work with processes which are actively being analyzed
by gdb or truss
- the ptrace interface may cause syscalls to return EINTR, thus
interferring with signals handling within the process
Side note: <janitor task> the interface can be further lifted in order to
get rid of the very last procfs interfaces remnants and made more
suitable for copying with sysctl/ptrace interface </janitor task>.
attilio [Wed, 25 Nov 2009 15:12:24 +0000 (15:12 +0000)]
Avoid sshd, cron, syslogd and inetd to be killed under high-pressure swap
environments.
Please note that this can't be done while such processes run in jails.
Note: in future it would be interesting to find a way to do that
selectively for any desired proccess (choosen by user himself), probabilly
via a ptrace interface or whatever.
wollman [Wed, 25 Nov 2009 04:35:54 +0000 (04:35 +0000)]
Make all three if conditions look similar by always initializing nsec
and moving the default initialization of prec into the else clause.
The clang static analyzer erroneously thought that nsec can be used
uninitialized here; it was not actually possible, but better to make
the code clearer. (Clang can't know that sprintf() won't modify *pi
behind the scenes.)
wollman [Wed, 25 Nov 2009 04:27:55 +0000 (04:27 +0000)]
In __mbsconv(), if prec was zero, nconv could have been used
uninitialized. Initialize it to a safe value so that there's no
chance of returning an error if stack garbage happens to be equal to
(size_t)-1 or (size_t)-2.
ivoras [Tue, 24 Nov 2009 19:57:41 +0000 (19:57 +0000)]
Make ULE process usage (%CPU) accounting usable again by keeping track
of the last tick we incremented on.
Submitted by: matthew.fleming/at/isilon.com, is/at/rambler-co.ru
Reviewed by: jeff (who thinks there should be a better way in the future)
Approved by: gnn (mentor)
MFC after: 3 weeks
fabient [Tue, 24 Nov 2009 19:26:53 +0000 (19:26 +0000)]
- fix a LOR between process lock and pmc thread mutex
- fix a system deadlock on process exit when the sample buffer
is full (pmclog_loop blocked in fo_write) and pmcstat exit.
jhb [Tue, 24 Nov 2009 16:57:35 +0000 (16:57 +0000)]
- For 350 chips, don't set various INTR bits in TX control word; turning INTR
bits on seems to confuse hardware TX engine.
- For 350 chips, set TX desc's buffer physical address before turning on the
TX desc valid bit.
mav [Tue, 24 Nov 2009 14:06:15 +0000 (14:06 +0000)]
Use only lower byte of sectors_intr IDENTIFY word as sector count.
This fixes SET_MULTI error during boot on devices supporting less then
16 sectors per interrupt.
mav [Tue, 24 Nov 2009 12:47:58 +0000 (12:47 +0000)]
MFp4:
- Extend XPT-SIM transfer settings control API. Now it allows to report to
SATA SIM number of tags supported by each device, implement ATA mode and
SATA revision negotiation for both SATA and PATA SIMs.
- Make ahci(4) and siis(4) to use submitted maximum tag number, when
scheduling requests. It allows to support NCQ on devices with lower tags
count then controller supports.
- Make PMP driver to report attached devices connection speeds.
- Implement ATA mode negotiation between user settings, device and
controller capabilities.
marcel [Mon, 23 Nov 2009 23:23:05 +0000 (23:23 +0000)]
Don't make MJUMPAGESIZE equal to PAGE_SIZE unconditionally.
When PAGE_SIZE is 16K, MJUMPAGESIZE equals MJUM16BYTES and
causes build breakages.
For PAGE_SIZE < 2K, define MJUMPAGESIZE as MCLBYTES.
For PAGE_SIZE > 8K, define MJUMPAGESIZE as 8K.
Everywhere inbetween, define MJUMPAGESIZE as PAGE_SIZE.
jkim [Mon, 23 Nov 2009 22:23:19 +0000 (22:23 +0000)]
- Add more aggressive BPF JIT optimization. This is in more favor of i386
while the previous commit was more amd64-centric.
- Use calloc(3) instead of malloc(3)/memset(3) in user land[1].
marcel [Mon, 23 Nov 2009 21:09:23 +0000 (21:09 +0000)]
Revert previous commit. The problem was not related to overrunning
the kernel stack at all. The new USB stack simply caused a change
in timing that triggered a firmware bug more often. The addition
of PRINTF_BUFR_SIZE apparently triggered the same firmware bug
even more reliably.
But even with KSTACK_PAGES=5, one instance of the firmware bug
remained: booting with a CD inserted. This problem was run into
by accident after installing Debian and having to boot FreeBSD
to fixup the GPT partitioning (Thanks... not). After bumping
KSTACK_PAGES to 5, it was pretty unbelievable that the stack was
still being too small.
After updating the firmware we could boot with a CD inserted and
KSTACK_PAGES could be lowered back to 4 pages without problems.
Note: It is believed to be a timing related firmware bug, because
the machine check information showed access to the serial console
on one CPU and access to the EHCI HCD on the other CPU. Since
both are devices on the management unit and thus virtualized in
some way, any execution trace that does not include concurrent
access to the BMC from both CPUs is fine.
Note also that it's not understood exactly how increasing the
kernel stack avoided hitting the firmware bug. A change in page
faults does change timing, but it's not known if that's what's
happening here.
In any case: the problem is being monitored. Reverting back to
4 pages for the kernel stack is preferred, because it makes it
easier to switch to 16K pages (double the page size) without
wasting too much memory by not being able to half the number of
pages...
mav [Mon, 23 Nov 2009 18:07:28 +0000 (18:07 +0000)]
Do not attach JMicrons with single PCI function. They are not working as
AHCI for some reason, even when declaring so. Let atajmicron configure
them for us and provide PATA support.
rmacklem [Mon, 23 Nov 2009 16:08:15 +0000 (16:08 +0000)]
Modify the experimental nfs server so that it falls back to
using VOP_LOOKUP() when VFS_VGET() returns EOPNOTSUPP in the
ReaddirPlus RPC. This patch is based upon one by pjd@ for the
regular nfs server which has not yet been committed. It is needed
when a ZFS volume is exported and ReaddirPlus (which almost
always happens for NFSv4) is performed by a client. The patch
also simplifies vnode lock handling somewhat.
rnoland [Mon, 23 Nov 2009 16:00:16 +0000 (16:00 +0000)]
Create a seperate ZFS enabled loader.
This adds zfsloader which will be called by zfsboot/gptzfsboot code rather
than the tradional loader. This eliminates the need to set the
LOADER_ZFS_SUPPORT variable in order to get a ZFS enabled loader.
Note however, that you must reinstall your bootcode (zfsboot/gptzfsboot)
in order for the boot process to use the new loader.
New installations will no longer be required to build a ZFS enabled
loader for a working ZFS boot system. Installing zfsboot/gptzfsboot is
sufficient for acknowledging the use of CDDL code and therefore the ZFS
enabled loader.
yongari [Sun, 22 Nov 2009 21:45:55 +0000 (21:45 +0000)]
Reduce status block size DMAed by controller. bge(4) uses single
Tx/Rx/Rx return ring such that large part of status block was not
used at all. All bge(4) controllers except BCM5700 AX/BX has a
feature to control the size of status block. So use minimum status
block size allowed in controller. This reduces number of DMAed
status block size to 32 bytes from 80 bytes.
thompsa [Sun, 22 Nov 2009 21:16:43 +0000 (21:16 +0000)]
Improve High Speed slot allocation mechanism by moving the computation to the
endpoint rather than per xfer and provide functions around get/free of resources.
yongari [Sun, 22 Nov 2009 21:16:30 +0000 (21:16 +0000)]
Implement TSO for BCM5755 or newer controllers. Some controllers
seem to require a special firmware to use TSO. But the firmware is
not available to FreeBSD and Linux claims that the TSO performed by
the firmware is slower than hardware based TSO. Moreover the
firmware based TSO has one known bug which can't handle TSO if
ethernet header + IP/TCP header is greater than 80 bytes. The
workaround for the TSO bug exist but it seems it's too expensive
than not using TSO at all. Some hardwares also have the TSO bug so
limit the TSO to the controllers that are not affected TSO issues
(e.g. 5755 or higher).
While I'm here set VLAN tag bit to all descriptors that belengs to
a frame instead of the first descriptor of a frame. The datasheet
is not clear how to handle VLAN tag bit but it worked either way in
my testing. This makes it simplify TSO configuration a little bit.
Big thanks to davidch@ who sent me detailed TSO information.
Without this I was not able to implement it.
yongari [Sun, 22 Nov 2009 20:50:27 +0000 (20:50 +0000)]
Fix two long standing bugs on bge(4). Most pre BCM5755 controllers
have a DMA bug when buffer address crosses a multiple of the 4GB
boundary(e.g. 4GB, 8GB, 12GB etc). Limit DMA address to be within
4GB address for these controllers. The second DMA bug limits DMA
address to be within 40bit address space. This bug applies to
BCM5714 and BCM5715 and 5708(bce(4) controller). This is not
actually a MAC controller bug but an issue with the embedded PCIe
to PCI-X bridge in the device. So for BCM5714/BCM5715 controllers
also limit the DMA address to be within 40bit address space.
Special thanks to davidch@ who gave me detailed errata information.
I think this change will fix long standing bge(4) instability
issues on systems with more than 4GB memory.
yongari [Sun, 22 Nov 2009 20:31:40 +0000 (20:31 +0000)]
For MSI case, interrupt is not shared and we don't need to force
PCI flush to get correct status block update. Add an optimized
interrupt handler that is activated for MSI case. Actual interrupt
handling is done by taskqueue such that the handler does not
require driver lock for Rx path. The MSI capable bge(4) controllers
automatically disables further interrupt once it enters interrupt
state so we don't need PIO access to disable interrupt in interrupt
handler.
yongari [Sun, 22 Nov 2009 20:02:13 +0000 (20:02 +0000)]
Cache Rx producer/Tx consumer index as soon as we know status block
update and then clear status block. Previously it used to access
these index without synchronization which may cause problems when
bounce buffers are used. Also add missing bus_dmamap_sync(9) in
polling handler. Since we now update status block in driver, adjust
bus_dmamap_sync(9) for status block.
yongari [Sun, 22 Nov 2009 19:44:11 +0000 (19:44 +0000)]
Rearrange bge_start_locked to see we can send more frames by
checking IFF_DRV_RUNNING and IFF_DRV_OACTIVE flags. Also if we
have less than 16 free send BDs set IFF_DRV_OACTIVE and try it
later. Previously bge(4) used to reserve 16 free send BDs after
loading dma maps but hardware just need one reserved send BD. If
prouder index has the same value of consumer index it means the Tx
queue is empty.
While I'm here check IFQ_DRV_IS_EMPTY first to save one lock
operation.
yongari [Sun, 22 Nov 2009 19:11:34 +0000 (19:11 +0000)]
Use capability pointer to access PCIe registers rather than
directly access them at fixed address. While I'm here don't touch
other bits of PCIe device control register except max payload size.
yongari [Sun, 22 Nov 2009 18:47:56 +0000 (18:47 +0000)]
Due to newly added PCIe capabilities fallback code for finding the
PCIe capability did not work right on recent controllers. Remove
FreeBSD 6.x support code.
jilles [Sun, 22 Nov 2009 18:23:30 +0000 (18:23 +0000)]
Fix various things about SIGINT handling:
* exception handlers are now run with interrupts disabled, which avoids
many race conditions
* fix some cases where SIGINT only aborts one command and continues the
script, in particular if a SIGINT causes an EINTR error which trumped the
interrupt.
Example:
sh -c 'echo < /some/fifo; echo This should not be printed'
The fifo should not have writers. When pressing ctrl+c to abort the open,
the shell used to continue with the next command.
Example:
sh -c '/bin/echo < /some/fifo; echo This should not be printed'
Similar. Note, however, that this particular case did not and does not work
in interactive mode with job control enabled.
ume [Sun, 22 Nov 2009 16:51:44 +0000 (16:51 +0000)]
When -n is specified, attempt to turn hostnames found in utmp into IP
addresses, again. However, change a hostname into an IP address, only
when a host has just one A/AAAA RR.
jilles [Sun, 22 Nov 2009 14:04:20 +0000 (14:04 +0000)]
sh: Ensure the same command input file is on top after executing a builtin.
This avoids weirdness when 'fc -e vi' or the like is done and there is a
syntax error in the file. Formerly an interactive shell tried to execute
stuff after the syntax error and exited.
This should also avoid similar issues with 'command eval' and 'command .'
when 'command' is implemented properly as in NetBSD sh.
Special builtins did not have this problem since errors in them cause the
shell to exit or to reset various state such as the current command input
file.
mav [Sun, 22 Nov 2009 11:17:31 +0000 (11:17 +0000)]
Fix Intel PATA UDMA timings setting, affecting write performance.
Binary divider value 10 specified in datasheet is not a hex 0x10.
UDMA2 should be 33/2 instead of 66/4, which is documented as reverved,
UDMA4 should be 66/2 instead of 66/4, which is definitely wrong.
jilles [Sat, 21 Nov 2009 14:28:32 +0000 (14:28 +0000)]
sh: Some changes to stderr flushing:
* increase buffer size from 100 to 256 bytes
* remove implied flush from out2str(), in particular this avoids unnecessary
flushing in the middle of a -x tracing line
* rename dprintf() to out2fmt_flush(), make it flush out2 and use this
function in various places where flushing is desired after an error
message
rmacklem [Fri, 20 Nov 2009 21:21:13 +0000 (21:21 +0000)]
Patch the experimental NFS server is a manner analagous to
r197525, so that the creation verifier is handled correctly
in va_atime for 64bit architectures. There were two problems.
One was that the code incorrectly assumed that
sizeof (struct timespec) == 8 and the other was that the tv_sec
field needs to be assigned from a signed 32bit integer, so that
sign extension occurs on 64bit architectures. This is required
for correct operation when exporting ZFS volumes.
jhb [Fri, 20 Nov 2009 20:43:34 +0000 (20:43 +0000)]
Revert the previous change to pthread_once() stub in libc. It is actually
a feature that libstdc++ depends on to simulate the behavior of libc's
internal '__isthreaded' variable. One benefit of this is that _libc_once()
is now private to _once_stub.c.
yongari [Fri, 20 Nov 2009 20:33:59 +0000 (20:33 +0000)]
Add IPv4/TCP/UDP Tx checksum offloading support. It seems the
controller also has support for IP/TCP checksum offloading for Rx
path. But I failed to find to way to enable Rx MAC to compute the
checksum of received frames.
yongari [Fri, 20 Nov 2009 20:25:21 +0000 (20:25 +0000)]
Because we know received bytes including CRC there is no reason to
call m_adj(9). The controller also seems to have a capability to
strip CRC bytes but I failed to activate this feature except for
loopback traffic.
yongari [Fri, 20 Nov 2009 20:18:53 +0000 (20:18 +0000)]
Add initial endianness support. It seems the controller supports
both big-endian and little-endian format in descriptors for Rx path
but I couldn't find equivalent feature in Tx path. So just stick to
little-endian for now.
jhb [Fri, 20 Nov 2009 19:19:51 +0000 (19:19 +0000)]
Add an internal _once() method. This works identical to pthread_once(3)
with the additional property that it is safe for routines in libc to use
in both single-threaded and multi-threaded processes. Multi-threaded
processes use the pthread_once() implementation from the threading library
while single-threaded processes use a simplified "stub" version internal
to libc. The libc stub-version of pthread_once() now also uses the
simplified "stub" version as well instead of being a nop.
jkim [Fri, 20 Nov 2009 18:49:20 +0000 (18:49 +0000)]
- Allocate scratch memory on stack instead of pre-allocating it with
the filter as we do from bpf_filter()[1].
- Revert experimental use of contigmalloc(9)/contigfree(9). It has no
performance benefit over malloc(9)/free(9)[2].
Requested by: rwatson[1]
Pointed out by: rwatson, jhb, alc[2]