markj [Mon, 17 Feb 2014 05:06:43 +0000 (05:06 +0000)]
MFC r249514 (by gnn):
Point args[0] not at the thread that is ending but at the one that
is starting. This is in line with practice in OpenSolaris.
Note that this change is only in ULE and not in the 4BSD scheduler.
Once this change settles in (MFC timeout has expired) we'll try it out
on 4BSD as well.
MFC r260043:
The arguments to sched:::off-cpu are the thread and associated process of
the thread selected to run, not the currently running thread.
hselasky [Fri, 7 Feb 2014 07:34:47 +0000 (07:34 +0000)]
MFC r244535, r245995, r261505 and r258961:
- Use a boundary of zero, hence a PAGE_SIZE boundary
is implied by all memory allocations.
- Fix an external compiler warning about write-only
assigned variable.
hselasky [Tue, 4 Feb 2014 09:03:14 +0000 (09:03 +0000)]
MFC r261228:
When detaching a [USB] keyboard, keys might still be pressed. Ensure
that all pressed keys are released before completing the USB keyboard
detach. This will prevent so-called "ghost-keys" from appearing after
that the USB device generating the key event(s) has been detached.
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.
hselasky [Fri, 24 Jan 2014 08:06:14 +0000 (08:06 +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 08:01:42 +0000 (08:01 +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.
The first two were always GPL2. The last two were
added after the GPL3 transition, but were written
by aaw@google.com and Rafael EspĂndola got permission
to relicense them under the GPL2 for inclusion in
llvm-gcc.
delphij [Tue, 14 Jan 2014 19:27:42 +0000 (19:27 +0000)]
On stable/8 and stable/9, disable hardware random number generators
by default. This is a direct commit to stable/ branches because
HEAD and stable/10 have superior implementation of random device.
jhb [Mon, 13 Jan 2014 21:29:34 +0000 (21:29 +0000)]
MFC 197775,197777-197779,197781,197794,243152,243313,255478:
First cut at implementing SOCK_SEQPACKET support for UNIX (local) domain
sockets. This allows for reliable bi-directional datagram communication
over UNIX domain sockets, in contrast to SOCK_DGRAM (M:N, unreliable) or
SOCK_STERAM (bi-directional bytestream). Largely, this reuses existing
UNIX domain socket code. This allows applications requiring record-
oriented semantics to do so reliably via local IPC.
mav [Mon, 13 Jan 2014 19:14:29 +0000 (19:14 +0000)]
MFC r259197:
Do not DELAY() for P-state transition unless we want to see the result.
Intel manual says: "If a transition is already in progress, transition to
a new value will subsequently take effect. Reads of IA32_PERF_CTL determine
the last targeted operating point." So seems it should be fine to just
trigger wanted transition and go. Linux does the same.
This is a series of commits inspired on Google's gcc-4.2.1 for
Android that were taken from the gcc pre-4.3 under the GPLv2.
gcc: Backport fixes for -W parentheses in C++
This fixes GCC 19564.
gcc: merge rs6000 change from FSF pre-gcc43
Don't set MASK_PPC_GFXOPT for 8540 or 8548.
Merge vrp-tree fix from gcc-4.3
Fix missed conversion from / to >> (GCC PR32521)
Merge in GCCr120505 to include definition of TREE_OVERFLOW_P
gcc: warn about integer overflow in constant expressions in the C++
frontend.
gcc: Add a new option -Wvla to warn variable length array.
libcpp: preprocessor speedup patches from upstream gcc.
gcc: add femit-struct-debug support to reduce Reduce dwarf debug size
gcc: Fix postreload-gcse treatment of call-clobbered registers.
gcc: Record some previous commits in the ChangeLog.gcc43 file.
pfg [Sat, 11 Jan 2014 01:50:45 +0000 (01:50 +0000)]
MFC r260361:
gcc: Fix optimization bug.
GCC-PR rtl-optimization/34628
* combine.c (try_combine): Stop and undo after the first combination
if an autoincrement side-effect on the first insn has effectively
been lost.
dim [Sat, 4 Jan 2014 22:00:07 +0000 (22:00 +0000)]
MFC r260095:
For sys/boot/i386 and sys/boot/pc98, separate flags to be passed
directly to the linker (LD_FLAGS) from flags passed indirectly, via the
compiler driver (LDFLAGS).
This is because several Makefiles under sys/boot/i386 and sys/boot/pc98
use ${LD} directly to link, and the normal LDFLAGS value should not be
used in these cases.
dim [Sat, 4 Jan 2014 18:53:31 +0000 (18:53 +0000)]
MFC r260040:
In sys/dev/mcd/mcd.c, mark the static const COPYRIGHT string as __used,
so it ends up in the object file, and no warnings are emitted about it
being actually unused.
pluknet [Thu, 2 Jan 2014 16:41:10 +0000 (16:41 +0000)]
MFC r259872:
The compile time constant limit on number of swap devices was removed in 5.2.
As such, remove the EINVAL error saying so. Currently the vm.nswapdev sysctl
just represents the number of added swap devices.
Make hastctl list command output current queue sizes.
Reviewed by: pjd
r257582 (pjd):
Correct alignment.
r259191:
For memsync replication, hio_countdown is used not only as an
indication when a request can be moved to done queue, but also for
detecting the current state of memsync request.
This approach has problems, e.g. leaking a request if memsynk ack from
the secondary failed, or racy usage of write_complete, which should be
called only once per write request, but for memsync can be entered by
local_send_thread and ggate_send_thread simultaneously.
So the following approach is implemented instead:
1) Use hio_countdown only for counting components we waiting to
complete, i.e. initially it is always 2 for any replication mode.
2) To distinguish between "memsync ack" and "memsync fin" responses
from the secondary, add and use hio_memsyncacked field.
3) write_complete() in component threads is called only before
releasing hio_countdown (i.e. before the hio may be returned to the
done queue).
4) Add and use hio_writecount refcounter to detect when
write_complete() can be called in memsync case.
Reported by: Pete French petefrench ingresso.co.uk
Tested by: Pete French petefrench ingresso.co.uk
r259192:
Add some macros to make the code more readable (no functional chages).
r259193:
Fix compiler warnings.
r259194:
In remote_send_thread, if sending a request fails don't take the
request back from the receive queue -- it might already be processed
by remote_recv_thread, which lead to crashes like below:
(primary) Unable to receive reply header: Connection reset by peer.
(primary) Unable to send request (Connection reset by peer):
WRITE(954662912, 131072).
(primary) Disconnected from kopusha:7772.
(primary) Increasing localcnt to 1.
(primary) Assertion failed: (old > 0), function refcnt_release,
file refcnt.h, line 62.
Taking the request back was not necessary (it would properly be
processed by the remote_recv_thread) and only complicated things.
r259195:
Send wakeup to threads waiting on empty queue before releasing the
lock to decrease spurious wakeups.
Submitted by: davidxu
r259196:
Check remote protocol version only for the first connection (when it
is actually sent by the remote node).
Otherwise it generated confusing "Negotiated protocol version 1" debug
messages when processing the second connection.