clocks. Each routine can output an upper bound on the absolute time or time
interval requested. Different flavours of absolute time can be requested, for
example with or without leap seconds, monotonic or not, etc.
Committed on behalf of Julien Ridoux and Darryl Veitch from the University of
Melbourne, Australia, as part of the FreeBSD Foundation funded "Feed-Forward
Clock Synchronization Algorithms" project.
For more information, see http://www.synclab.org/radclock/
Submitted by: Julien Ridoux (jridoux at unimelb edu au)
head nfsc_defunctlockowner. This patch simply removes the code that
loops through this always empty list, since the code no longer does
anything useful. It should not have any effect on the client's
behaviour.
MFC after: 2 weeks
mode configuration registers. This is apparently required for correct
behaviour, but also requires the chip to actually officially support it.
Sponsored by: Hobnob, Inc.
"correct" handling of frames in the RX pending queue during interface
transitions.
* ath_stoprecv() doesn't blank out the descriptor list - that's what
ath_startrecv() does. So, change a comment to reflect that.
* ath_stoprecv() does include a large (3ms) delay to let pending DMA
complete. However, I'm under the impression that the stopdma hal
method does check for a bit in the PCU to indicate DMA has stopped.
So, to help with fast abort and restart, modify ath_stoprecv() to take
a flag which indicates whether this is needed.
* Modify the uses of ath_stoprecv() to pass in a flag to support the
existing behaviour (ie, do the delay.)
* Remove some duplicate PCU teardown code (which wasn't shutting down DMA,
so it wasn't entirely correct..) and replace it with a call to
ath_stoprecv(sc, 0) - which disables the DELAY call.
The upshoot of this is now channel change doesn't simply drop completed
frames on the floor, but instead it cleanly handles those frames.
It still discards pending TX frames in the software and hardware queues
as there's no (current) logic which forcibly recalculates the rate control
information (or whether they're appropriate to be on the TX queue after
a channel change), that'll come later.
This still doesn't stop all the sources of queue stalls but it does
tidy up some of the code duplication.
To be complete, queue stalls now occur during normal behaviour -
they only occur after some kind of broken behaviour causes an interface
or node flush, upsetting the TX/RX BAW. Subsequent commits will
incrementally fix these and other related issues.
Sponsored by: Hobnob, Inc.
Fix the signature of the getcontext builtin, eliminating incorrect
warnings about its prototype.
This also adds a -W(no-)builtin-requires-header option, which can be
used to enable or disable warnings of this kind.
MFC after: 1 week
Mark the overloaded atomic builtins as having custom type checking,
which they do. This avoids all of the default argument promotions that
we (1) don't want, and (2) undo during that custom type checking, and
makes sure that we don't run into trouble during template
instantiation. Fixes llvm/clang PR11320.
MFC after: 1 week
mco_icache_sync_range was earlier set to mipsNN_icache_sync_range_index_32
which is not necessary, revert this.
Also, the data cache is coherent so write back is not really needed. This
change is experimental.
Implement ffcounter, a monotonically increasing cumulative counter on top of the
active timecounter. Provide low-level functions to read the ffcounter and
convert it to absolute time or a time interval in seconds using the current
ffclock estimates, which track the drift of the oscillator. Add a ring of
fftimehands to track passing of time on each kernel tick and pick up updates of
ffclock estimates.
Committed on behalf of Julien Ridoux and Darryl Veitch from the University of
Melbourne, Australia, as part of the FreeBSD Foundation funded "Feed-Forward
Clock Synchronization Algorithms" project.
For more information, see http://www.synclab.org/radclock/
Submitted by: Julien Ridoux (jridoux at unimelb edu au)
to the kernel's pause() function. The pause() function can now be used
when cold != 0. Also assert that the timeout in system ticks must be
positive.
Suggested by: Bruce Evans
MFC after: 1 week
to kern/subr_bus.c. Simplify this function so that it no longer
depends on malloc() to execute. Identify a few other places where
it makes sense to use device_delete_all_children().
MFC after: 1 week
It's not currently used; it didn't build on 32-bit and the previous build fix
is incorrect. If we really implement self-tests we can do this again
properly.
Submitted by: Ben Hutchings <bwh -at- solarflare.com>
MFC after: 3 weeks
This field is supposed to be set to the interface bit rate, but for some
reason I thought it was denominated in kilobits. Multiply the values up
accordingly, taking care to saturate rather than overflow on 32-bit
architectures.
Submitted by: Ben Hutchings <bwh -at- solarflare.com>
MFC after: 3 weeks
nullfs. The problem is that resulting vnode is only required to be
held on return from the successfull call to vop, instead of being
referenced.
Nullfs VOP_INACTIVE() method reclaims the vnode, which in combination
with the VOP_VPTOCNP() interface means that the directory vnode
returned from VOP_VPTOCNP() is reclaimed in advance, causing
vn_fullpath() to error with EBADF or like.
Change the interface for VOP_VPTOCNP(), now the dvp must be
referenced. Convert all in-tree implementations of VOP_VPTOCNP(),
which is trivial, because vhold(9) and vref(9) are similar in the
locking prerequisites. Out-of-tree fs implementation of VOP_VPTOCNP(),
if any, should have no trouble with the fix.
Tested by: pho
Reviewed by: mckusick
MFC after: 3 weeks (subject of re approval)
The current code mixes the use of `flags' and `mode'. This is a bit
confusing, since the faccessat() function as a `flag' parameter to store
the AT_ flag.
Make this less confusing by using the same name as used in the POSIX
specification -- `amode'.
twice if the server bogusly returns an error with the NFSERR_RETERR
bit (bit 31) set. No actual NFS error has this bit set, but it seems
that amd will sometimes do this. This patch makes sure the NFSERR_RETERR
bit is cleared to avoid a crash.
PR: kern/153847
MFC after: 2 weeks
firmware image in the module is registered. Instead, do it when the
other image is itself referenced.
This allows a module with multiple firmware images to be automatically
unloaded when none of the firmware images are in use.
Discussed with: jhb@ (on -hackers)
addresses from being probed and attaching something including ukphy(4)
to it. This is mainly necessarily for PHY switches that create duplicate
or fake PHYs on the bus that can corrupt the PHY state when accessed or
simply cause problems when ukphy(4) isolates the additional instances.
- Change miibus(4) to be a hinted bus, allowing to add child devices via
hints and to set their attach arguments (including for automatically
probed PHYs). This is mainly needed for PHY switches that violate IEEE
802.3 and don't even implement the basic register set so we can't probe
them automatically. However, the ability to alter the attach arguments
for automatically probed PHYs is also useful as for example it allows
to test (or tell a user to test) new variant of a PHY with a specific
driver by letting an existing driver attach to it via manipulating the
IDs without the need to touch the source code or to limit a Gigabit
Ethernet PHY to only announce up to Fast Ethernet in order to save
energy by limiting the capability mask. Generally, a driver has to
be hinted via hint.phydrv.X.at="miibusY" and hint.phydrv.X.phyno="Z"
(which already is sufficient to add phydrvX at miibusY at PHY address
Z). Then optionally the following attach arguments additionally can
be configured:
hint.phydrv.X.id1
hint.phydrv.X.id2
hint.phydrv.X.capmask
- Some minor cleanup.
Reviewed by: adrian, ray
dcphy(4) (CID 9283).
- In dc_detach(), check whether ifp is NULL as dc_attach() may call the
former without ifp being allocated (CID 4288).
Found with: Coverity Prevent(tm)
!DC_IS_ADMTEK in dc_miibus_statchg(). This change broke link
establishment of Intel 21143 with dcphy(4) where it stuck in
"ability detect" state without completing auto-negotiation.
Also nuke dc_if_media as it's not actually used.
Submitted by: marius
Create std.XLP for configuration options, which is included by the
conf files. The files XLP, XLPN32 and XLP64 will have mostly ABI related
options.
Also move uart and pci to mips/nlm/std.xlp since all XLP configurations
needs these devices.
Obtained from: prabhath at netlogicmicro com (intial version)
p->p_boundary_count. Race could cause the execve(2) from the threaded
process to hung since thread boundary counter was incorrect and
single-threading never finished.
Reported by: pluknet, pho
Tested by: pho
MFC after: 1 week
