This is done in kern_ntptime, perhaps not the best place.
This is done using resettodr().
Some features:
- make save period configurable via tunable and sysctl
- period of zero disables saving, setting a non-zero period re-enables
it or reschedules it
- do saving only if system clock is ntp-synchronized
- save on shutdown
Discussed with: des, Peter Jeremy <peterjeremy@acm.org>
X-Maybe: save time near seconds boundary for better precision
MFC after: 2 weeks
emulated by BIOS using SMI interrupt. On those chipsets reading
from the status port may be thousand times slower than usually.
Sometimes this emilation is not working properly resulting in
commands timing out and since we assume that inb() operation
takes very little time to complete we need to adjust number of
retries to keep waiting time within a designed limits (100ms).
Measure time it takes to make read_status() call and adjust
number of retries accordingly.
To keep it simple, use TSC to measure inb() performance and
keep it to amd64-only, since TSC may not available on older
CPUs.
Also enable detection of the AT controller absence on amd64.
Reviewed by: jhb
MFC after: 1 month
buffers before closing the NFSv4 opens, as the comment states.
This patch deletes the call to nfscl_mustflush() which would
return 0 for the case where a delegation still exists, which
was incorrect and could cause crashes during recovery from
an expired lease.
MFC after: 1 week
back in rxeof (I could see little point in taking it out),
and now release it before the stack entry.
Also, make it so the 82574 does not configure for multiqueue
when its not used in the stack.
On top of that, LLVM+Clang mis-compiles this code because of its register
allocator bug.
Analyzed by: Andrew Reilly (areilly at bigpond dot net dot au)
Reviewed by: ariff, rdivacky
MFC after: 3 days
In the end, it does help fixing /dev/io usage from multithreaded
processes.
- On i386 and amd64 the old behaviour is kept but multithreaded
processes must use the new interface in order to work well.
- Support for the other architectures is greatly improved, where
necessary, by the necessity to define very small things now.
Manpage update will happen shortly.
Sponsored by: Sandvine Incorporated
PR: threads/116181
Reviewed by: emaste, marcel
MFC after: 3 weeks
ratectl_node_init() functions and since ni_rtctls was already
malloc'ed() we will panic. Fix this by using the already malloc'ed
pointer.
Found by: bschmidt
Reviewed by: bschmidt
a revert call. In this case don't attempt to remove something that
has not yet been added. Otherwise this jaddref must hang around
to prevent the bitmap write as normal.
the page table entry's accessed bit is either preset by the immediately
preceding call to pmap_enter() or by hardware (or software) upon return
from vm_fault() when the faulting access is restarted.
or unmanaged before acquiring the page queues lock. Neither of these
tests require that lock. Moreover, a better way of testing if the page
is unmanaged is to test the type of vm object. This avoids a pointless
vm_page_lookup().
MFC after: 3 weeks
Open Firmware device tree in order to match what the PROM built-in
driver uses. This is especially important when netbooting Fujitsu
Siemens PRIMEPOWER250 as in that case the built-in driver isn't used
and the port facts PortSCSIID defaults to 0, conflicting with the
disk at the same address.
Add missing CURVNET_RESTORE() calls for multiple code paths, to stop
leaking the currently cached vnet into callers and to the process.
Sponsored by: The FreeBSD Foundation
Sponsored by: CK Software GmbH
MFC after: 4 days
that we allow all possible jail IPs as source address rather than
forcing the "primary". While IPv6 naturally has source address
selection, for legacy IP we do not go through the pain in case
IP_HDRINCL was not set. People should bind(2) for that.
This will, for example, allow ping(|6) -S to work correctly for
non-primary addresses.
Reported by: (ten 211.ru)
Tested by: (ten 211.ru)
MFC after: 4 days
addresses while walking the IPv6 address list if in the jail case
something is connecting to ::1.
Reported by: Pieter de Boer (pieter thedarkside.nl)
Tested by: Pieter de Boer (pieter thedarkside.nl)
MFC after: 4 days
by mrinfo and mtrace, was dropped by the IGMP TTL check. IGMP control
traffic must always have a TTL of 1.
Submitted by: Matthew Luckie
MFC after: 3 days
Clearing a page table entry's accessed bit (PG_A) and setting the
page's PG_REFERENCED flag in pmap_protect() can't really be justified,
so don't do it.
first descriptor in TSO case. Otherwise controller can generate bad
frames during TSO. To address it, make sure to pull up ethernet +
IP + TCP header with options in first buffer. Also ensure the
buffer length of the first descriptor for TSO covers entire ethernet
+ IP + TCP with options and setup additional Tx descriptor if the
first buffer includes TCP payload.
Tested by: Amar Takhar <verm <> darkbeer dot org >
MFC after: 1 week
prevents the firmware of Fujitsu Siemens PRIMEPOWER250, which both causes
stray interrupts and erroneously enables interrupts at least when calling
SUNW,set-trap-table, in the foot.
things allows variable length messages to be easily supported.
- Extend KPI with alq_writen() and alq_getn() to support variable length
messages, which is enabled at ALQ creation time depending on the
arguments passed to alq_open(). Also add variants of alq_open() and
alq_post() that accept a flags argument. The KPI is still fully
backwards compatible and shouldn't require any change in ALQ consumers
unless they wish to utilise the new features.
- Introduce the ALQ_NOACTIVATE and ALQ_ORDERED flags to allow ALQ consumers
to have more control over IO scheduling and resource acquisition
respectively.
- Strengthen invariants checking.
- Document ALQ changes in ALQ(9) man page.
Sponsored by: FreeBSD Foundation
Reviewed by: gnn, jeff, rpaulo, rwatson
MFC after: 1 month
- replace modification of pmap resident_count with pmap_resident_count_{inc,dec}
- the pv list is protected by the pmap lock, but in several cases we are relying
on the vm page queue mutex, move pv_va read under the pmap lock
