attilio [Thu, 21 Feb 2013 21:54:53 +0000 (21:54 +0000)]
Hide the details for the assertion for VM_OBJECT_LOCK operations.
Rename current VM_OBJECT_LOCK_ASSERT(foo, RA_WLOCKED) into
VM_OBJECT_ASSERT_WLOCKED(foo)
imp [Thu, 21 Feb 2013 07:16:40 +0000 (07:16 +0000)]
Locking for todr got pushed down into inittodr and the client
libraries it calls (although some might not be doing it right). We are
serialized right now by giant as well. This means the splsoftclock are
now an anachronism that has no benefit, even marking where locking
needs to happen. Remove them.
adrian [Thu, 21 Feb 2013 06:18:40 +0000 (06:18 +0000)]
Add a new option to limit the maximum size of aggregates.
The default is to limit them to what the hardware is capable of.
Add sysctl twiddles for both the non-RTS and RTS protected aggregate
generation.
Whilst here, add some comments about stuff that I've discovered during
my exploration of the TX aggregate / delimiter setup path from the
reference driver.
imp [Thu, 21 Feb 2013 02:34:04 +0000 (02:34 +0000)]
The other giant locked storage drivers have removed splbio(), for the
most part, so remove it here too. Anybody locking this driver will need
far more than locks where splbio() were, so remove these nops.
imp [Thu, 21 Feb 2013 00:27:51 +0000 (00:27 +0000)]
Replace splhigh() with critical_enter()/leave() to ensure we write the
config mode unlock sequence quickly enough. This likely isn't too critical,
since splhigh() has been a noop for a decade...
jfv [Thu, 21 Feb 2013 00:25:45 +0000 (00:25 +0000)]
Refresh on the shared code for the E1000 drivers.
- bear with me, there are lots of white space changes, I would not
do them, but I am a mere consumer of this stuff and if these drivers
are to stay in shape they need to be taken.
em driver changes: support for the new i217/i218 interfaces
igb driver changes:
- TX mq start has a quick turnaround to the stack
- Link/media handling improvement
- When link status changes happen the current flow control state
will now be displayed.
- A few white space/style changes.
lem driver changes:
- the shared code uncovered a bogus write to the RLPML register
(which does not exist in this hardware) in the vlan code,this
is removed.
keramida [Wed, 20 Feb 2013 18:31:55 +0000 (18:31 +0000)]
Various improvements to the qsort(3) usage example:
- Remove unused #include.
- Do not cast away const.
- Use the canonical idiom to compare two numbers.
- Use proper type for sizes, i.e. size_t instead of int.
- Correct indentation.
- Simplify printf("\n") to puts("").
- Use return instead of exit() in main().
Submitted by: Christoph Mallon, christoph.mallon at gmx.de
Approved by: gjb (mentor)
Reviewed by: stefanf
MFC after: 1 week
gibbs [Wed, 20 Feb 2013 17:55:17 +0000 (17:55 +0000)]
Avoid panic when tearing down the DTrace pid provider for a
process that has crashed.
sys/cddl/contrib/opensolaris/uts/common/dtrace/fasttrap.c:
In fasttrap_pid_disable(), we cannot PHOLD the proc
structure for a process that no longer exists, but
we still have other, fasttrap specific, state that
must be cleaned up for probes that existed in the
dead process. Instead of returning early if the
process related to our probes isn't found,
conditionalize the locking and carry on with a NULL
proc pointer. The rest of the fasttrap code already
understands that a NULL proc is possible and does
the right things in this case.
gibbs [Wed, 20 Feb 2013 17:46:38 +0000 (17:46 +0000)]
Orphaned processes that are being traced are killed by the
kernel. Properly restore, continue, and detach from processes
being DTraced when DTrace exits with an error so the program
being inspected is not terminated.
cddl/contrib/opensolaris/cmd/dtrace/dtrace.c:
In fatal(), the generic error handler, close the DTrace
handle as is done in the "probe/script" error handler
dfatal(). fatal() can be invoked after DTrace attaches
to processes (e.g. a script specified by command line
argument can't be found) and closing the handle will
release them.
kib [Wed, 20 Feb 2013 17:39:52 +0000 (17:39 +0000)]
Convert machine/elf.h, machine/frame.h, machine/sigframe.h,
machine/signal.h and machine/ucontext.h into common x86 includes,
copying from amd64 and merging with i386.
Kernel-only compat definitions are kept in the i386/include/sigframe.h
and i386/include/signal.h, to reduce amd64 kernel namespace pollution.
The amd64 compat uses its own definitions so far.
The _MACHINE_ELF_WANT_32BIT definition is to allow the
sys/boot/userboot/userboot/elf32_freebsd.c to use i386 ELF definitions
on the amd64 compile host. The same hack could be usefully abused by
other code too.
pluknet [Wed, 20 Feb 2013 15:44:40 +0000 (15:44 +0000)]
ip_savecontrol() style fixes. No functional changes.
- fix indentation
- put the operator at the end of the line for long statements
- remove spaces between the type and the variable in a cast
- remove excessive parentheses
adrian [Wed, 20 Feb 2013 11:22:44 +0000 (11:22 +0000)]
A couple of quick tidyups:
* Delete this debugging print - I used it when debugging the initial
TX descriptor chaining code. It now works, so let's toss it.
It just confuses people if they enable TX descriptor debugging as they
get two slightly different versions of the same descriptor.
attilio [Wed, 20 Feb 2013 10:51:34 +0000 (10:51 +0000)]
There is no need to use VM_OBJECT_LOCKED() as the assertion won't
make the check available in any case if INVARIANTS is switched off.
Remove VM_OBJECT_LOCKED().
attilio [Wed, 20 Feb 2013 10:38:34 +0000 (10:38 +0000)]
Switch vm_object lock to be a rwlock.
* VM_OBJECT_LOCK and VM_OBJECT_UNLOCK are mapped to write operations
* VM_OBJECT_SLEEP() is introduced as a general purpose primitve to
get a sleep operation using a VM_OBJECT_LOCK() as protection
* The approach must bear with vm_pager.h namespace pollution so many
files require including directly rwlock.h
jilles [Tue, 19 Feb 2013 23:46:51 +0000 (23:46 +0000)]
sh: Fix a crash with the stackmark code.
If a stack mark is set while the current stack block is empty, the stack
block may move later on (because of realloc()) and the stack mark needs to
be updated. This updating does not happen after popstackmark() has been
called; therefore, call setstackmark() again if the stack mark is still
being used.
For some reason, this only affects a few users. I cannot reproduce it. The
situation seems quite rare as well because an empty stack block would
usually be freed (by popstackmark()) before execution reaches a
setstackmark() call.
jmg [Tue, 19 Feb 2013 21:35:17 +0000 (21:35 +0000)]
add support for AES and PCLMULQDQ instructions to binutils...
Thanks to Mike Belopuhov for the pointer to the OpenBSD patch, though
OpenBSD's gcc is very different that it only helped w/ where to modify,
not how... Thanks to jhb for some early reviews...
gonzo [Tue, 19 Feb 2013 20:33:55 +0000 (20:33 +0000)]
Roll back change of frequency for initialization sequence since it
seems to cause more problems then previous behavior: it either breaks
initilization sequence in other places or uncovers problems with
high-speed mode timing for SDHCI 3.0
mav [Tue, 19 Feb 2013 19:25:50 +0000 (19:25 +0000)]
MFcalloutng:
Make led(4) fire callouts at 10Hz only when there is at least one LED that
is requested to blink. Do not fire if all LEDs are static (usual case).
mav [Tue, 19 Feb 2013 18:22:25 +0000 (18:22 +0000)]
MFcalloutng:
Make dcons input polling adaptive, reducing poll rate to 1Hz after several
minutes of inactivty to reduce global interrupt rate. Most of users never
used FireWire debugging, so it is not very useful to consume power by it.
dim [Tue, 19 Feb 2013 17:53:32 +0000 (17:53 +0000)]
Pull in r175360 from upstream llvm trunk:
MCParser: Reject .balign with non-pow2 alignments.
GNU as rejects them and there are configure scripts in the wild that
check if the assembler rejects ".align 3" to determine whether the
alignment is in bytes or powers of two.
markj [Tue, 19 Feb 2013 03:23:13 +0000 (03:23 +0000)]
- Make sure to set an error code when trying to obtain a data descriptor for
a section of type SHT_NULL.
- Update the man page to reflect the fact that elf_getdata() and
elf_rawdata() may return with an error of ELF_E_SECTION.
ganbold [Tue, 19 Feb 2013 02:01:35 +0000 (02:01 +0000)]
Define gpio constants rather than using enum.
Fix pull-up and pull-down values of gpio.
According to A10 user manual possible pull register
values are 00 Pull-up/down disable, 01 Pull-up, 10 Pull-down.
kientzle [Mon, 18 Feb 2013 23:13:13 +0000 (23:13 +0000)]
Add mem_load_raw() for loading data from another location in memory.
This will be used by some upcoming changes to loader(8) FDT
handling to allow it to use an FDT provided by an earlier
boot stage the same as an FDT loaded from disk.
markj [Mon, 18 Feb 2013 22:47:16 +0000 (22:47 +0000)]
Mark the coretemp(4) sysctls as MPSAFE, ensuring that Giant won't be held
unnecessarily by a user thread waiting to run on a specific CPU after
calling sched_bind().
alc [Mon, 18 Feb 2013 01:22:20 +0000 (01:22 +0000)]
Place a cap on the size of the kernel's heap, also known as the kmem
submap. Otherwise, after r246204, the auto-scaling logic in kern_malloc.c
tries to create a kmem submap that consumes the entire kernel map on a
Pandaboard with 1 GB of RAM.
alc [Mon, 18 Feb 2013 01:02:48 +0000 (01:02 +0000)]
On arm, like sparc64, the end of the kernel map varies from one type of
machine to another. Therefore, VM_MAX_KERNEL_ADDRESS can't be a constant.
Instead, #define it to be a variable, vm_max_kernel_address, just like we
do on sparc64.