Don't waste a page of KVA for the boot-time memory test on x86. For amd64,
reuse the first page of the crashdumpmap as CMAP1/CADDR1. For i386,
remove CMAP1/CADDR1 entirely and reuse CMAP3/CADDR3 for the memory test.
Fix issues in config parser relating to lun serial numbers.
Without this fix some serial numbers needed to be quoted
to avoid the config parser bailing out.
Submitted by: delphij
Sponsored by: iXsystems
If e_shnum or e_shstrndx are at least SHN_LORESERVE (0xff00) then an
escape value is used to indicate that the actual value is found in one
of section 0's fields.
Don't dump core when the ELF file has no section headers. The ELF
core files created by gcore are among those.
Assert that the new entry is inserted into the right location in the
map entries list, and that it does not overlap with the previous and
next entries.
Handle single-byte reads from the bvmcons port (0x220) by returning
0xff. Some guests may attempt to read from this port to identify
psuedo-PNP ISA devices. (The ie(4) driver in FreeBSD/i386 is one
example.)
Fix a bug in bsdgrep(1) where patterns are not correctly
detected.
Certain criteria must be met for this bug to show up:
* the -w flag is specified, and
* neither -o or --color are specified, and
* the pattern is part of another word in the line, and
* the other word that contains the pattern occurs first
PR: 181973
Sponsored by: The FreeBSD Foundation
Retooling addrconfig() to exclude addresses on loopback interfaces
when looking for configured addresses.
This change is based upon the code from the submitter, and made
following changes:
- Exclude addresses assigned on interfaces which are down, like NetBSD
does.
- Exclude addresses assigned on interfaces which are ifdisabled.
Use SOCK_CLOEXEC.
PR: 190824
Submitted by: Justin McOmie
Pull in r211435 from upstream llvm trunk (by Benjamin Kramer):
Legalizer: Add support for splitting insert_subvectors.
We handle this by spilling the whole thing to the stack and doing the
insertion as a store.
PR19492. This happens in real code because the vectorizer creates
v2i128 when AVX is enabled.
This fixes a "fatal error: error in backend: Do not know how to split
the result of this operator!" message encountered during compilation of
the net-p2p/libtorrent-rasterbar port.
Reported by: Evgeniy <iron@mail.ua>
MFC r267705:
Add the llvm patch for r267704.
Don't denounce peripherals on system shutdown. Together with r267321
(MFCed to stable/10 in r267775), we're now back to the pre-r228483
level of default verbosity. This in turn again typically allows for
reading information that userland might have printed on the screen
before initiating a halt, but still permits to debug potential device
shutdown problems on system shutdown via CAM_DEBUG etc.
Reviewed by: mav
Sponsored by: Bally Wulff Games & Entertainment GmbH
Avoid the USB device disconnected and controller shutdown clutter on system
shutdown by putting the former under !rebooting and turning the latter into
debug messages.
Reviewed by: hps
Sponsored by: Bally Wulff Games & Entertainment GmbH
Honor jails for unbound SCTP sockets when selecting source addresses,
reporting IP-addresses to the peer during the handshake, adding
addresses to the host, reporting the addresses via the sysctl
interface (used by netstat, for example) and reporting the
addresses to the application via socket options.
This issue was reported by Bernd Walter.
Consider the total number of descriptors available (and not just those
that are ready to be reclaimed) when deciding whether to resume tx after
a stall.
Allocating new bucket for bucket zone, never take it from the zone itself,
since it will almost certanly fail. Take next bigger zone instead.
This situation should not happen with original bucket zones configuration:
"32 Bucket" zone uses "64 Bucket" and vice versa. But if "64 Bucket" zone
lock is congested, zone may grow its bucket size and start biting itself.
Implement simple direct-mapped cache for popular filesystem identifiers to
avoid congestion on global mountlist_mtx mutex in vfs_busyfs(), while
traversing through the list of mount points.
This change significantly improves NFS server scalability, since it had
to do this translation for every request, and the global lock becomes quite
congested.
This code is more optimized for relatively small number of mount points.
On systems with hundreds of active mount points this simple cache may have
many collisions. But the original traversal code in that case should also
behave much worse, so we are not loosing much.
patch: add dry-run alias for compatibility with other implementations.
Other implementations of patch(1), including GNU patch and "svn patch"
have a --dry-run option which does the same as our -C or --check
option.
Add a new alias to make our implementation more compatible.
patch: unsign the line length to avoid overflows.
Patch(1) uses a short int for the line length, which is usually
sufficient for regular diffs, but makes no effort to signal
when there is an overflow.
Change the line length to an unsigned short int to better use
the fact that a length is never negative. The change is loosely
inspired on a related change in DragonFly, but we avoid spending
more memory than necessary.
While here adjust the messages to be clearer on what is happening.
Use atomics to modify numvnodes variable.
This allows to mostly avoid lock usage in getnewvnode_[drop_]reserve(),
that reduces number of global vnode_free_list_mtx mutex acquisitions
from 4 to 2 per NFS request on ZFS, improving SMP scalability.
Split RPC pool threads into number of smaller semi-isolated groups.
Old design with unified thread pool was good from the point of thread
utilization. But single pool-wide mutex became huge congestion point
for systems with many CPUs. To reduce the congestion create several
thread groups within a pool (one group for every 6 CPUs and 12 threads),
each group with own mutex. Each connection during its registration is
assigned to one of the groups in round-robin fashion. File affinify
code may still move requests between the groups, but otherwise groups
are self-contained.
Introduce new per-thread lock to protect the list of requests.
This allows to slightly simplify svc_run_internal() code: if we processed
all the requests in a queue, then we know that new one will not appear.
