POSIX 2008 says this about clock_settime(2):
If the value of the CLOCK_REALTIME clock is set via clock_settime(),
the new value of the clock shall be used to determine the time
of expiration for absolute time services based upon the
CLOCK_REALTIME clock. This applies to the time at which armed
absolute timers expire. If the absolute time requested at the
invocation of such a time service is before the new value of
the clock, the time service shall expire immediately as if the
clock had reached the requested time normally.
Setting the value of the CLOCK_REALTIME clock via clock_settime()
shall have no effect on threads that are blocked waiting for
a relative time service based upon this clock, including the
nanosleep() function; nor on the expiration of relative timers
based upon this clock. Consequently, these time services shall
expire when the requested relative interval elapses, independently
of the new or old value of the clock.
When the real-time clock is adjusted, such as by clock_settime(3),
wake any threads sleeping until an absolute real-clock time.
Such a sleep is indicated by a non-zero td_rtcgen. The sleep functions
will set that field to zero and return zero to tell the caller
to reevaluate its sleep duration based on the new value of the clock.
At present, this affects the following functions:
pthread_cond_timedwait(3)
pthread_mutex_timedlock(3)
pthread_rwlock_timedrdlock(3)
pthread_rwlock_timedwrlock(3)
sem_timedwait(3)
sem_clockwait_np(3)
I'm working on adding clock_nanosleep(2), which will also be affected.
Reported by: Sebastian Huber <sebastian.huber@embedded-brains.de>
Reviewed by: jhb, kib
MFC after: 2 weeks
Relnotes: yes
Sponsored by: Dell EMC
Differential Revision: https://reviews.freebsd.org/D9791
When I made the changes in r313821, I fell victim to one of the
classic blunders, the most famous of which is: never get involved
in a land war in Asia. But only slightly less well known is this:
Keep your brain turned on and engaged when making a tedious, sweeping,
mechanical change. KTR can correctly log the immediate integral values
passed to it, as well as constant strings, but not non-constant strings,
since they might change by the time ktrdump retrieves them.
Reported by: glebius
MFC after: 3 days
Sponsored by: Dell EMC
It was implemented to reduce context switches when uploading firmware to
card's RAM. But this mechanism is not used last 10 years since all mbox
operations are now polled, and it was never used for cards produced in
last 15 years. Newer cards can use DMA to upload firmware.
MFC after: 2 weeks
INHERIT_ZERO is an OpenBSD feature.
When a page is marked as such, it would be zeroed
upon fork().
This would be used in new arc4random(3) functions.
PR: 182610
Reviewed by: kib (earlier version)
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D427
With the following in /etc/fstab:
/dev/gpt/swap.eli none swap sw,late 0 0
swap will not be enabled, with `swapon -aL' complaining:
swapon: Invalid option: late
This happens because swap_on_geli_args() which parses geli arguments
out of all mount options does not expect late or noauto among them.
Fix this by explicitly allowing these arguments.
Reviewed by: jilles
Approved by: jilles
MFC after: 2 weeks
Differential Revision: D9835
Some other hypervisors like Xen can pretend to be Hyper-V but obviously
they can't implement all Hyper-V features. Let's make sure we're genuine
Hyper-V here.
Also fix some minor coding style issues.
PR: 211746
MFC after: 2 weeks
Sponsored by: Microsoft
This change fixes DMA resource leak on driver unload. Also it removes
DMA resources allocation for hardcoded number of requests before fetching
the real number from firmware. Also it prepares ground for more flexible
IRQs allocation according to firmware capabilities.
MFC after: 2 weeks
The path was elided with the existing geli tests under
/usr/tests/sys/geom/class/eli/... in r315230.
MFC after: 2 weeks (if r315230, etc isn't MFCed at once)
Sponsored by: Dell EMC Isilon
This change moves the tests added in r313962 to an existing directory
structure used by the geli TAP tests. It also, renames the test from
pbkdf2 to pbkdf2_test .
The changes to ObsoleteFiles.inc are being committed separately as they
aren't needed for the MFC to ^/stable/11, etc, if the MFC for the tests
is done all in one commit.
MFC after: 2 weeks
X-MFC with: r313962, r313972-r313973
Reviewed by: allanjude
Sponsored by: Dell EMC Isilon
Differential Revision: D9985
that they still work. These utilities have become out of sync with the
code in the kernel and need work to bring them back into shape.
Most people test on real systems or VMs on real networks.
Suggested by: glebius
that they still work. These utilities have become out of sync with the
code in the kernel and need work to bring them back into shape.
Most people test on real systems or VMs on real networks.
Sugested by: glebius
- unconditionally enable BUS_DMA on non-x86 architectures
- speed up rxd zeroing via customized function
- support out of order updates to rxd's
- add prefetching to hardware descriptor rings
- only prefetch on 10G or faster hardware
- add seperate tx queue intr function
- preliminary rework of NETMAP interfaces, WIP
Submitted by: Matt Macy <mmacy@nextbsd.org>
Sponsored by: Limelight Networks
This was introduced on accident in r165243, when return sites were unified
to add a lock around LibAliasProxyRule().
PR: 217749
Submitted by: Svyatoslav <razmyslov at viva64.com>
Sponsored by: Viva64 (PVS-Studio)
out of order addresses
Move `port->transport` initialization before the TAILQ_FOREACH(..) loop
to ensure that the value is properly initialized before it's inserted
into the TAILQ.
MFC after: 1 week
PR: 217760
Submitted by: eugen
Sponsored by: Dell EMC Isilon
This ensures the storage isn't leaked when non-NULL and the function
returns early, prior to the `free(vendor)` later on in the function.
MFC after: 1 week
Reported by: Coverity
CID: 1007111-1007113
Reviewed by: cem
Sponsored by: Dell EMC Isilon
Differential Revision: D9993
- Add comma before and after 'e.g.'; remove surrounding parentheses
that were unnecessary after this change [1].
- Add .Mt when referencing ken and Peter Dufault's email addresses
[2].
- Sprinkle around .An use where proper [2].
Bump .Dd for the change
MFC after: 1 week
Reported by: igor [1], manlint [2]
Reviewed by: imp
Sponsored by: Dell EMC Isilon
Differential Revision: D9968
The memory stored by `lease` would have previously been leaked if an
unterminated lease declaration was found in an early-return code path.
MFC after: 1 week
Reported by: clang static analyzer, Coverity
CID: 1007114
Submitted by: Tom Rix <trix@juniper.net>
Sponsored by: Dell EMC Isilon; Juniper, Inc
Differential Revision: D9992
As part of (eventual) p2p/tdls/multi-STA support, a lot of global configuration
parameters (WME, ERP (slot, preamble), channel width, HT protmode, etc are the
biggest offenders) should be per-VAP.
For multi-BSS VAP operation they may be linked, but for p2p/TDLS
operation that can be off-channel they can definitely be different
(think: 2GHz STA, 5GHz p2p.)
The global configuration view of these is mostly a "configure the current
non-smart-firmware NIC" view. This should be split up into per-VAP state,
then a global non-smart-firmware-NIC management layer to handle channel
changes and such in software.
This is step one in a loooong road for this. It should be a big non-functional
change for everyone.
* create a per-VAP WME update call.
* call it if its set, and call the global callback if it isn't
This still uses global WME state - it's just preparation for a future change
which will make the WME state per-VAP and fall through to a shared WME
configuration for hostap operation.
Note: this requires a full kernel recompile; the internal net80211 ABI has changed.
Reviewed by: avos
Differential Revision: https://reviews.freebsd.org/D9986
