gnn [Mon, 3 Feb 2014 03:35:43 +0000 (03:35 +0000)]
MFC: 260791
Add a command line argument to turn off blocking waiting for the user
to press Ctrl-C (-b). This allows tests with tight loops of mcgrabs
that can stress the multicast tables.
pfg [Fri, 31 Jan 2014 03:59:28 +0000 (03:59 +0000)]
MFC r260988, r261034, r261120, r261235:
ext2fs: Properly the EXT4_EXTENTS and EXT4_INDEX to the inode flags.
In order to support Ext4 extents we need to pass the Ext4 inode flags
without interfering with the chflags. This is better done by using the
i_flag field in the inode and doing proper translation to the linux
ext4 equivalents.
Solve a potential corruption issue in the dirindex code. The dirindex
code can now be renabled as the problems related to it have been
solved.
ae [Thu, 30 Jan 2014 10:54:11 +0000 (10:54 +0000)]
MFC r261084:
malloc() with M_WAITOK doesn't return NULL.
MFC r261085:
Fix typo in r261084.
Add to the gctl_error() an ability to specify error description even
if numeric error code is already specified. Also by default set
error code to EINVAL.
PR: 185852
MFC r261086:
In gctl_copyin() remove unused error variable.
geom_alloc_copyin() can't return ENOMEM, so describe its fail as bad
control request. Add check for NULL pointer in gctl_dump(), since it
can be NULL when geom_alloc_copyin() failed.
MFC r261089:
Remove another unneeded NULL check from geom_alloc_copyin().
Do copyout in case of gctl version mismatch and fix sbuf leak in
g_ctl_ioctl_ctl().
mav [Wed, 29 Jan 2014 02:39:44 +0000 (02:39 +0000)]
MFC r260267 (by smh), r261042:
Correct short delete issue in SCSI UNMAP support
Correct missing \n's in xpt_print's
Correct incorrect count being passed to short delete xpt_print
jhb [Tue, 28 Jan 2014 21:56:18 +0000 (21:56 +0000)]
MFC 260910:
- Allow PCI devices that are attached to a driver to be identified by their
device name instead of just the selector.
- Accept an optional device argument to -l to restrict the output to only
listing details about a single device. This is mostly useful in
conjunction with other flags like -e or -c to allow a user to query
details about a single device.
dim [Tue, 28 Jan 2014 08:07:19 +0000 (08:07 +0000)]
MFC r261162:
Pull in r195679 from upstream llvm trunk:
Don't use nopl in cpus that don't support it.
Patch by Mikulas Patocka. I added the test. I checked that for cpu names that
gas knows about, it also doesn't generate nopl.
The modified cpus:
i686 - there are i686-class CPUs that don't have nopl: Via c3, Transmeta
Crusoe, Microsoft VirtualBox - see
https://bbs.archlinux.org/viewtopic.php?pid=775414
k6, k6-2, k6-3, winchip-c6, winchip2 - these are 586-class CPUs
via c3 c3-2 - see https://bugs.archlinux.org/task/19733 as a proof that
Via c3 and c3-Nehemiah don't have nopl
hselasky [Fri, 24 Jan 2014 08:08:28 +0000 (08:08 +0000)]
MFC r260808 and r260814:
- Close a minor deadlock.
- Fix a possible memory use after free and leak situation associated
with USB device detach when using character device handles. This also
includes LibUSB. It turns out that "usb_close()" cannot always get a
reference to clean up its USB transfers and such, if called during the
kernel USB device detach.
hselasky [Fri, 24 Jan 2014 07:57:21 +0000 (07:57 +0000)]
MFC r260588 and r260589:
- Separate I/O errors from reception of STALL PID.
- Implement better error recovery for Transaction Translators, TTs,
found in High Speed USB HUBs which translate from High Speed USB into
FULL or LOW speed USB. In some rare cases SPLIT transactions might get
lost, which might leave the TT in an unknown state. Whenever we detect
such an error try to issue either a clear TT buffer request, or if
that is not possible reset the whole TT.
- Introduce additional hash to group requests by hash of sockref. This
allows to process TCP acknowledgements without looping though all the cache,
and as result allows to do it every time.
- Indroduce additional callbacks to notify application layer about sockets
disconnection. Without this last few requests processed just before socket
disconnection never processed their ACKs and stuck in cache for many hours.
- Implement transport-specific method for tracking reply acknowledgements.
New implementation does not cross multiple stack layers to get the data and
does not have race conditions that previously made some requests stuck
in cache. This could be done more efficiently at sockbuf layer, but that
would broke some KBIs, while I don't know other consumers for it aside NFS.
- Instead of traversing all DRC twice per request, run cleaning only once
per request, and except in some conditions traverse only single hash slot
at a time.
Together this limits NFS DRC growth only to situations of real connectivity
problems. If network is working well, and so all replies are acknowledged,
cache remains almost empty even after hours of heavy load. Without this
change on the same test cache was growing to many thousand requests even
with perfectly working local network.
As another result this reduces CPU time spent on the DRC handling during
SPEC NFS benchmark from about 10% to 0.5%.
mav [Thu, 23 Jan 2014 00:44:45 +0000 (00:44 +0000)]
MFC r260036:
Introduce xprt_inactive_self() -- variant for use when sure that port
is assigned to thread. For example, withing receive handlers. In that
case the function reduces to single assignment and can avoid locking.
mav [Thu, 23 Jan 2014 00:44:14 +0000 (00:44 +0000)]
MFC r260031:
In addition to r259632 completely block receive upcalls if we have more
data than we need. This reduces lock pressure from xprt_active() side.
mav [Thu, 23 Jan 2014 00:43:33 +0000 (00:43 +0000)]
MFC r259877:
Slightly simplify expiration logic introduced in r254337.
- Do not update the histogram for items we are any way deleting from cache.
- Do not update the histogram if nfsrc_tcphighwater is not set.
- Remove some extra math operations.
mav [Thu, 23 Jan 2014 00:42:08 +0000 (00:42 +0000)]
MFC r259765:
Fix RPC server threads file handle affinity to work better with ZFS.
Instead of taking 8 specific bytes of file handle to identify file during
RPC thread affitinity handling, use trivial hash of the full file handle.
ZFS's struct zfid_short does not have padding field after the length field,
as result, originally picked 8 bytes are loosing lower 16 bits of object ID,
causing many false matches and unneeded requests affinity to same thread.
This fix substantially improves NFS server latency and scalability in SPEC
NFS benchmark by more flexible use of multiple NFS threads.
mav [Thu, 23 Jan 2014 00:41:23 +0000 (00:41 +0000)]
MFC r259659, r259662:
Remove several linear list traversals per request from RPC server code.
Do not insert active ports into pool->sp_active list if they are success-
fully assigned to some thread. This makes that list include only ports that
really require attention, and so traversal can be reduced to simple taking
the first one.
Remove idle thread from pool->sp_idlethreads list when assigning some
work (port of requests) to it. That again makes possible to replace list
traversals with simple taking the first element.
mav [Thu, 23 Jan 2014 00:40:28 +0000 (00:40 +0000)]
MFC r259632:
Rework flow control for connection-oriented (TCP) RPC server.
When processing receive buffer, write the amount of data, expected
in present request record, into socket's so_rcv.sb_lowat to make stack
aware about our needs. When processing following upcalls, ignore them
until socket collect enough data to be read and processed in one turn.
This change reduces number of context switches and other operations
in RPC stack during large NFS writes (especially via non-Jumbo networks)
by order of magnitude.
After precessing current packet, take another look into the pending
buffer to find out whether the next packet had been already received.
If not, deactivate this port right there without making RPC code to
push this port to another thread just to find that there is nothing.
If the next packet is received partially, also deactivate the port, but
also update socket's so_rcv.sb_lowat to not be woken up prematurely.
This change additionally reduces number of context switches per NFS
request about in half.
mav [Thu, 23 Jan 2014 00:35:41 +0000 (00:35 +0000)]
MFC r244008 (by rmacklem):
Add support for backchannels to the kernel RPC. Backchannels
are used by NFSv4.1 for callbacks. A backchannel is a connection
established by the client, but used for RPCs done by the server
on the client (callbacks). As a result, this patch mixes some
client side calls in the server side and vice versa. Some
definitions in the .c files were extracted out into a file called
krpc.h, so that they could be included in multiple .c files.
This code has been in projects/nfsv4.1-client for some time.
Although no one has given it a formal review, I believe kib@
has taken a look at it.
mav [Thu, 23 Jan 2014 00:26:24 +0000 (00:26 +0000)]
MFC r258132:
Some minor tuning to rpc/svc.c:
- close cosmetic race in svc_exit();
- do not set wait timeout for idle threads if we have no use for wakeups;
- create new requested thread sooner, not only after some another thread
wakeup, that may happen later under constant load.
mav [Tue, 21 Jan 2014 00:31:31 +0000 (00:31 +0000)]
MFC r257054:
Some microoptimizations for da and ada drivers:
- Replace ordered_tag_count counter with single flag;
- From da remove outstanding_cmds counter, duplicating pending_ccbs list;
- From da_softc remove unused links field.
mav [Tue, 21 Jan 2014 00:14:06 +0000 (00:14 +0000)]
MFC r254970 (by ken):
If a drive returns ASC/ASCQ 0x04,0x11 "Logical unit not ready,
notify (enable spinup) required", instead of doing the normal
retries, poll for a change in status.
We will poll every half second for a minute for the status to
change.
Hitachi drives (and likely other SAS drives) return that ASC/ASCQ
when they are waiting to spin up. What it means is that they are
waiting for the SAS expander to send them the SAS
NOTIFY (ENABLE SPINUP) primitive.
That primitive is the mechanism expanders/enclosures use to
sequence drive spinup to avoid overloading power supplies.
The first two were always GPL2. The last two were
added after the GPL3 transition, but were written
by aaw@google.com and Rafael Espíndola got permission
to relicense them under the GPL2 for inclusion in
llvm-gcc.
pfg [Mon, 20 Jan 2014 19:38:16 +0000 (19:38 +0000)]
MFC r260014, r260099:
gcc: Add support for label attributes and "unavailable" attribute.
Apple GCC has extensions to support for both label attributes and
an "unavailable" attribute. These are critical for objc but are
also useful in regular C/C++.
Improve error message shown to the user when trying to load a module that is
already loaded or compiled withing the kernel
Point the user to dmesg(1) to get informations about why loading a module did fail
instead of printing the cryptic "Exec format error"
Update the BUGS section of kld(4) according the recent changes in kldload(8)
gjb [Sun, 19 Jan 2014 19:49:24 +0000 (19:49 +0000)]
MFC r259729:
Bootstrap etcupdate(8) as part of the release build, similar
to what is done for mergemaster(8). This allows etcupdate(8)
to work out-of-box after the first upgrade of a system.
mav [Sat, 18 Jan 2014 22:52:43 +0000 (22:52 +0000)]
MFC r245848 (by jhb):
Always update the hw.uart.console hint anytime a change is made to the
comconsole setup. Previously the hint would be set when if you set a
custom port, but it would not be updated if you later set a custom speed.
Also, leave the hw.uart.console hint mutable so it can be overridden or
unset by the user if needed.
jhb [Tue, 14 Jan 2014 21:20:51 +0000 (21:20 +0000)]
MFC 238423,238426,238428,258063,258063,258066,258097,258185,259134:
The etcupdate utility is a tool for managing updates to files that are
not updated as part of `make installworld' such as files in /etc. It
manages updates by doing a three-way merge of changes made to these files
against the local versions. It is also designed to minimize the amount
of user intervention with the goal of simplifying upgrades for clusters
of machines.
projects / FreeBSD / stable / 9.git / log