Though the license of the original ac(8) source code provides many
liberties, we are already somewhat violating it. The license requires us
to clearly comment any modifications to the source code, as the original
authors of course do not want to get bug reports for modified versions
of ac(8). This is something we have not done consistently.
The need for such a license clause has become less over time. It is very
unlikely that end users will contact the original authors, as the
copyright is from 1994. I contacted both the copyright holders. They
responded in a timely fashion and were more than willing to relicense it
to a 2-clause BSD license. To address any concerns about bug reports
going to the original authors instead of me, add my own name and email
address to the copyright statements as well.
MFC after: 1 month
Special thanks to: Christopher Demetriou and Simon Gerraty
symbolic link to a directory for the target as a symbolic link instead of
a directory. This makes it possible to atomically update a symbolic
link using rename().
Reviewed by: gj
MFC after: 2 weeks
this case, allocate a plain mbuf and copy the frame into it, then send the
copy up the stack, leaving the original mbuf+cluster in place in the
receive ring for immediate re-use. This saves a trip through 2 of the
3 zones of the compound mbuf allocator, a trip through busdma, and a trip
through the 1 of the 3 mbuf destructors. For our load at Netflix, this can
lower CPU consumption by as much as 20%. The copy algorithm is based on
investigative work from Luigi Rizzo earlier in the year.
Reviewed by: jfv
Obtained from: Netflix
handler and not more statically.
Unfortunately, it seems that this is not ideal for new platform bringup
and boot low level development (which needs ktr_cpumask to be effective
before tunables can be setup).
Because of this, add a way to statically initialize cpusets, by passing
an list of initializers, divided by commas. Also, provide a way to enforce
an all-set mask, for above mentioned initializers.
This imposes some differences on how KTR_CPUMASK is setup now as a
kernel option, and in particular this makes the words specifications
backward wrt. what is currently in -CURRENT. In order to avoid mismatches
between KTR_CPUMASK definition and other way to setup the mask
(tunable, sysctl) and to print it, change the ordering how
cpusetobj_print() and cpusetobj_scan() acquire the words belonging
to the set.
Please give a look to sys/conf/NOTES in order to understand how the
new format is supposed to work.
Also, ktr manpages will be updated shortly by gjb which volountereed
for this.
This patch won't be merged because it changes a POLA (at least
from the theoretical standpoint) and this is however a patch that
proves to be effective only in development environments.
Requested by: rpaulo
Reviewed by: jeff, rpaulo
the interface is brought up. Without this, the boot time interrupt
round-robin assignment does not think the allocated interrupt resources
are active and leaves them assigned to CPU 0.
While here, add descriptive tags to each interrupt handler when MSI-X
is used.
Reviewed by: np
MFC after: 1 week
- Use queue(3) -- not some homegrown implementation of linked lists.
- Rename structures to _entry, as they are entries in the linked list --
not the lists themselves.
- Don't store entire copies of struct utmpx in utmpx_entry, but only the
members we're interested in. Large fields such as hostnames are not
needed during the execution of the program.
- Give structure members useful names, instead of `name'.
- While there, use struct timevals instead of time_t's internally. This
is not strictly useful, but while we're at it...
- Mark stuff static.
- Add missing const keywords.
- Remove unneeded prototypes.
- Remove workaround for sparc64-specific utmp problems. These don't
apply to utmpx.
- Don't discard entries when timestamps are not monotone. This shouldn't
ever happen with utmpx, but discarding them is a bit too harsh.
- Remove debug code. We nowadays have `getent utmpx', which can be used
to analyze logfiles in depth.
- Use proper uppercasing/periods in comments.
- Print output of `ac -p' sorted alphabetically, instead of first
occurrence.
- Properly check against pts/* instead of tty[PQRSpqrs]* to determine
whether a TTY is a pseudo-terminal.
MFC after: 1 month
- In the !wildcard case, return ENOSPC instead of confusing EEXIST
in case if ifc->ifc_maxunit reached.
- Fix unit leak, that I've introduced in previous revision.
Submitted by: Daan Vreeken <Daan vitsch.nl>
some HAL definitions rather than local definitions.
The original source (ath9k) pulled this stuff from the QCA driver and
removed the HAL_* prefix. I'm just restoring the correct order of things.
Obtained from: Qualcomm Atheros
This routine is intended only for commands such as INQUIRY where
the controller may fill out a smaller amount of data than allocated
by the host.
The end result of this bug was that isci(4) would report non-zero
resid for successful SCSI_UNMAP commands.
Sponsored by: Intel
MFC after: 3 days
* add cam as a module to build - but build in scbus/da for now, as
"cam" as a module includes all cam devices. Hardly space saving.
* Don't build FFS snapshot support.
Specifying no argument is undocumented in the gas manual, and clang's
integrated assembler refuses to parse it. Also, removing it causes no
change at all in the resulting object file.
MFC after: 1 week
In fact, bus_dmamem_alloc() happily NULLs the dmat pointer passed in,
before replacing it with its own.
This fixes a MIPS crash when kldload'ing if_ath/if_ath_pci -
bus_dmamap_destroy() was passed in a NULL dmat pointer and was doing
all kinds of very bad things.
Reviewed by: scottl
other CPUs doesn't require locking so get rid of it. As the latter is used
for the timecounter on certain machine models, using a spin lock in this
case can lead to a deadlock with the upcoming callout(9) rework.
- Merge r134227/r167250 from x86:
Avoid cross-IPI SMP deadlock by using the smp_ipi_mtx spin lock not only
for smp_rendezvous_cpus() but also for the MD cache invalidation and TLB
demapping IPIs.
- Mark some unused function arguments as such.
MFC after: 1 week
There are two consumers of vslock(9): sysctl code and drm driver. These
consumers are using locked memory as transient memory, it doesn't belong
to a process's memory.
Suggested by: avg
Reviewed by: alc
Approved by: kib (mentor)
MFC after: 2 weeks
o Disable multi-block operations: they sometimes fail.
o Don't use the PROOF bits yet: they hang the system hard.
o Disable the the multi-block operations for !rm9200, but it
still doesn't help.
o Fix writing < 12 bytes errata to actually work.
o Enable, for the moment, reporting extra bytes soaked up.
