* Move the node sleep/wake state under the TX lock rather than the
node lock. Let's leave the node lock protecting rate control only
for now.
* When reassociating, various state needs to be cleared. For example,
the aggregate session needs to be torn down, including any pending
aggregation negotiation and BAR TX waiting.
* .. and we need to do a "cleanup" pass since frames in the hardware
TX queue need to be transmitted.
Modify ath_tx_tid_cleanup() to be called with the TX lock held and push
frames into a completion list. This allows for the cleanup to be
done atomically for all TIDs in a node rather than grabbing and
releasing the TX lock each time.
freelist.
o Split the pool of free pages queues really by domain and not rely on
definition of VM_RAW_NFREELIST.
o For MAXMEMDOM > 1, wrap the RR allocation logic into a specific
function that is called when calculating the allocation domain.
The RR counter is kept, currently, per-thread.
In the future it is expected that such function evolves in a real
policy decision referee, based on specific informations retrieved by
per-thread and per-vm_object attributes.
o Add the concept of "probed domains" under the form of vm_ndomains.
It is responsibility for every architecture willing to support multiple
memory domains to correctly probe vm_ndomains along with mem_affinity
segments attributes. Those two values are supposed to remain always
consistent.
Please also note that vm_ndomains and td_dom_rr_idx are both int
because segments already store domains as int. Ideally u_int would
have much more sense. Probabilly this should be cleaned up in the
future.
o Apply RR domain selection also to vm_phys_zero_pages_idle().
Sponsored by: EMC / Isilon storage division
Partly obtained from: jeff
Reviewed by: alc
Tested by: jeff
bit available for a flag in the pointer. However, it felt more correct
to enforce natural alignment of the key pointer. Unfortunately on
32bit architectures 64bit integers are not always naturally aligned.
Change the assert to enforce only 32bit alignment of the 64bit key for
now to fix the build. A more correct fix would be to properly sort
the struct buf fields which definitely suffer from bloat due to padding.
vm_page_insert() so that (1) vm_radix_lookup_le() is never called while the
free page queues lock is held and (2) vm_radix_lookup_le() is called at most
once. This change reduces the average time that the free page queues lock
is held by vm_page_alloc() as well as vm_page_alloc()'s average overall
running time.
Sponsored by: EMC / Isilon Storage Division
users to guarantee that the output of DTrace scripts will be time-ordered.
This option is enabled by adding the line
#pragma D option temporal
to the beginning of a script, or by adding '-x temporal' to the arguments of
dtrace(1).
This change fixes a bug in the original port of the temporal option. This
bug was causing some assertions to fail, so they had been disabled; in this
revision the assertions are working properly and are enabled.
The DTrace version number has been bumped from 1.9.0 to 1.9.1 to reflect
the language change that's being introduced.
This change corresponds to part of illumos-gate commit e5803b76927480:
3021 option for time-ordered output from dtrace(1M)
Reviewed by: pfg
Obtained from: illumos
MFC after: 1 month
with any structure containing a uint64_t index. The tree code
auto-generates type safe wrappers.
- Eliminate the buf splay and replace it with pctrie. This is not only
significantly faster with large files but also allows for the possibility
of shared locking.
Reviewed by: alc, attilio
Sponsored by: EMC / Isilon Storage Division
EABI ARM kernels or clang-compiled ARM kernels.
This fixes a crash seen in clang-compiled ARM
kernels that include WITNESS.
This code could be easily modified to walk the stack
for current clang-generated code (including EABI)
but Andrew Turner has raised concerns that the
stack frame currently emitted by clang isn't actually
required by EABI so such a change might cause problems
down the road.
In case anyone wants to experiment, the change
to support current clang-compiled kernels
involves simply setting FR_RFP=0 and FR_SCP=1.
functions, reverse the numbering scheme for the levels. The highest
numbered level in the tree now appears near the root instead of the leaves.
Sponsored by: EMC / Isilon Storage Division
With "cached read" HDD testing and multiple ports busy on a SATA
host controller, 3726/3826 PMP will very rarely drop a deferred
R_OK that was intended for the host. Symptom will be all 5 drives
under test will timeout, get reset, and recover.
Submitted by: Rich Futyma <rich.futyma@sanmina.com>
MFC after: 2 weeks
null_hashget() obtains the reference on the nullfs vnode, which must
be dropped.
- Fix a wart which existed from the introduction of the nullfs
caching, do not unlock lower vnode in the nullfs_reclaim_lowervp().
It should be innocent, but now it is also formally safe. Inform the
nullfs_reclaim() about this using the NULLV_NOUNLOCK flag set on
nullfs inode.
- Add a callback to the upper filesystems for the lower vnode
unlinking. When inactivating a nullfs vnode, check if the lower
vnode was unlinked, indicated by nullfs flag NULLV_DROP or VV_NOSYNC
on the lower vnode, and reclaim upper vnode if so. This allows
nullfs to purge cached vnodes for the unlinked lower vnode, avoiding
excessive caching.
Reported by: G??ran L??wkrantz <goran.lowkrantz@ismobile.com>
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
a non-loss reset.
When the drain functions are called, the holding descriptor and link pointers
are NULLed out.
But when the processq function is called during a non-loss reset, this
doesn't occur. So the next time a DMA occurs, it's chained to a descriptor
that no longer exists and the hardware gets angry.
Tested:
* AR5416, STA mode; use sysctl dev.ath.X.forcebstuck=1 to force a non-loss
reset.
TODO:
* Further AR9380 testing just to check that the behaviour for the EDMA
chips is sane.
PR: kern/178477
before using said node.
The "blessed" way here is to take a node reference before referencing
anything inside the node, otherwise the node can be freed between
the time the pointer is copied/dereferenced and the time the node contents
are used.
This mirrors fixes that I've done elsewhere in the net80211/driver
stack.
PR: kern/178470
the beaglebone-specific .dts file.
Add a new .dts for the BeagleBone Black with more memory,
slightly different pinmux initialization, and with mmchs1
configured (though the latter doesn't quite work yet).
options OCTEON_VENDOR_GEFES to enable support for these boards, to
match changes that GE publishes to the Octeon Simple Executive. Since
board types overlap with other boards, it is unlikely that we will
properly boot on other Octeon boards with OCTEON_VENDOR_GEFES enabled.
Tested extensively on the WANIC 6354, but I retained support for all
the other models. Some features need changes in the base kernel, and
those are in progress.
An array-type stat in vmm.ko is defined as follows:
VMM_STAT_ARRAY(IPIS_SENT, VM_MAXCPU, "ipis sent to vcpu");
It is incremented as follows:
vmm_stat_array_incr(vm, vcpuid, IPIS_SENT, array_index, 1);
And output of 'bhyvectl --get-stats' looks like:
ipis sent to vcpu[0] 3114
ipis sent to vcpu[1] 0
Reviewed by: grehan
Obtained from: NetApp
the Linux tree that they always include this chip in their FDT, so
make support for the ds1337 opt-out rather than opt-in. Now my boards
boot with the correct time.
Convert the structures to C99 style initialisation, which makes it
a lot easier to check that all of them are set and to generate a
derived template from them.
Sponsored by: DARPA, AFRL
MFC after: 2 weeks
assigned conflicting ranges to BARs then leaving the BARs alone could
result in one device stealing mmio accesses intended to go to a second
device. Prior to 233677 the PCI bus driver attempted to handle this case
by clearing the BAR to 0 depending on BARs based at 0 not decoding (which
is not guaranteed to be true). Now when a conflicting BAR is detected the
following steps are taken:
1) If hw.pci.realloc_bars (a new tunable) is enabled (default is enabled),
then ignore the current BAR setting from the firmware and attempt to
allocate a fresh resource range for the BAR.
2) If 1) failed (or was disabled), disable decoding for the relevant
BAR type (e.g. disable mem decoding for a memory BAR) and emit a
warning if booting verbose.
Tested by: Alex Keda <admin@lissyara.su>
MFC after: 1 week
to 63 bit positions.
Do not fill the save area and do not set the saved bit in the xstate
bit vector for the state which is not marked as enabled in xsave_mask.
Reported and tested by: Jim Ohlstein <jim@ohlste.in>
MFC after: 3 days
irrespective of the setting of lem_rx_process_limit, while
giving a chance to the taskqueue scheduler to act after
each chunk.
This makes lem_rxeof similar to the one in if_em.c and if_igb.c .
if_lem.c and if_em.c: add a sysctl to manually configure the
'itr' moderation register.
Approved by: Jack Vogel
locks. To support this, VNODE locks are created with the LK_IS_VNODE
flag. This flag is propagated down using the LO_IS_VNODE flag.
Note that WITNESS still records the LOR. Only the printing and the
optional entering into the kernel debugger is bypassed with the
WITNESS_NO_VNODE option.
