kientzle [Thu, 17 May 2012 04:04:48 +0000 (04:04 +0000)]
Access the device tree blob via copyin/copyout.
The code previously assumed that copyin/copyout did no
address translation and that the device tree blob could
be manipulated in-place (with only a few adjustments for
the ELF loader offset). This isn't possible on all platforms,
so the revised code uses copyout() to copy the device tree
blob into a heap-allocated buffer and then updates the
device tree with copyout(). This isn't ideal, since it
bloats the loader memory usage, but seems the only feasible
approach (short of rewriting all of the fdt manipulation
routines).
pfg [Wed, 16 May 2012 15:53:38 +0000 (15:53 +0000)]
Fix a couple of issues that appear to be inherited from the old
8.x code:
- If the lock cannot be acquired immediately unlocks 'bar' vnode
and then locks both vnodes in order.
- wrong vnode type panics from cache_enter_time after calls by
ext2_lookup.
adrian [Tue, 15 May 2012 23:39:37 +0000 (23:39 +0000)]
Migrate ath_debug and sc_debug from an int to a uint64_t / QUAD;
add some more BAR debugging logic.
* Change the definition of ath_debug and ath_softc.sc_debug from
int to uint64_t;
* Change the relevant sysctls;
* Add a new BAR TX debugging field;
* Use this in if_ath_tx.
This has been tested by using the sysctl program, which happily allows
for fields > 32 bits to be configured.
marius [Tue, 15 May 2012 22:47:34 +0000 (22:47 +0000)]
Switch sparc64 to using libcompiler_rt; since r230021 we have a workaround
in place allowing it to be used there and since r235388 (see also r235486)
we also have usable div/mod optimizations like libgcc has.
marius [Tue, 15 May 2012 22:44:55 +0000 (22:44 +0000)]
Forced commit to denote that the claim in r235388, that libcompiler_rt when
used as a replacement for libgcc on sparc64 would cause a 60% decrease in
performance is wrong. Actually, the performance loss is only marginal and
the huge difference seen was caused by a pilot error comparing libgcc builds
using MALLOC_PRODUCTION with libcompiler_rt builds that did not.
adrian [Tue, 15 May 2012 04:55:15 +0000 (04:55 +0000)]
Handle non-xretry errors the same as xretry errors for now.
Although I _should_ handle the other errors in various ways (specifically
errors like FILT), treating them as having transmitted successfully
is completely wrong. Here, they'd be counted as successful and the BAW
would be advanced.. but the RX side wouldn't have received them.
The specific errors I've been seeing here are HAL_TXERR_FILT.
This patch does fix the issue - I've tested it using -i 0.001 pings
(enough to start aggregation) and now the behaviour is correct:
* The RX side never sees a "moved window" error, and
* The TX side sends BARs as needed, with the RX side correctly handling
them.
rstone [Tue, 15 May 2012 01:30:25 +0000 (01:30 +0000)]
Implement the DTrace sched provider. This implementation aims to be
compatible with the sched provider implemented by Solaris and its open-
source derivatives. Full documentation of the sched provider can be found
on Oracle's DTrace wiki pages.
Note that for compatibility with scripts originally written for Solaris,
serveral probes are defined that will never fire. These probes are defined
to fire when Solaris-specific features perform certain actions. As these
features are not present in FreeBSD, the probes can never fire.
Also, I have added a two probes that are not defined in Solaris, lend-pri
and load-change. These probes have been added to make it possible to
collect schedgraph data with DTrace.
Finally, a few probes are defined in Solaris to take a cpuinfo_t *
argument. As it was not immediately clear to me how to translate that to
FreeBSD, currently those probes are passed NULL in place of a cpuinfo_t *.
hselasky [Mon, 14 May 2012 17:00:32 +0000 (17:00 +0000)]
Move reset of USB mouse parameters from the USB mouse attach to
the USB mouse device open. Protect against multi character
device open. Some other nits.
joel [Mon, 14 May 2012 16:25:17 +0000 (16:25 +0000)]
mdoc: Avoid playing tricks with Ns: If Nm is present in the SYNOPSIS section,
it will be output on its own line. Ns cancels this effect however. This change
is also consistent with the rest of our manual pages.
marius [Sun, 13 May 2012 05:08:13 +0000 (05:08 +0000)]
- Get rid of debugging support in order to get rid of the V8-specific C
compiler frame size used there so this whole thing is V8/V9-agnostic.
- Use 32-bit function alignment as GCC does when using UltraSPARC I or
higher optimizations.
- Don't waste delay slots when possible.
Unfortunately, this still doesn't make libcompiler_rt a viable replacement
for libgcc on sparc64 though as once installed instead, buildworld times
increase by nearly 60% (which isn't related to these assembler functions).
rmacklem [Sat, 12 May 2012 22:20:55 +0000 (22:20 +0000)]
Fix two cases in the new NFS server where a tsleep() is
used, when the code should actually protect the tested
variable with a mutex. Since the tsleep()s had a 10sec
timeout, the race would have only delayed the allocation
of a new clientid for a client. The sleeps will also
rarely occur, since having a callback in progress when
a client acquires a new clientid, is unlikely.
in practice, since having a callback in progress when
a fresh clientid is being acquired by a client is unlikely.
kib [Sat, 12 May 2012 20:49:58 +0000 (20:49 +0000)]
Add new pager type, OBJT_MGTDEVICE. It provides the device pager
which carries fictitous managed pages. In particular, the consumers of
the new object type can remove all mappings of the device page with
pmap_remove_all().
The range of physical addresses used for fake page allocation shall be
registered with vm_phys_fictitious_reg_range() interface to allow the
PHYS_TO_VM_PAGE() to work in pmap.
Most likely, only i386 and amd64 pmaps can handle fictitious managed
pages right now.
Sponsored by: The FreeBSD Foundation
Reviewed by: alc
MFC after: 1 month
kib [Sat, 12 May 2012 20:42:56 +0000 (20:42 +0000)]
Add a facility to register a range of physical addresses to be used
for allocation of fictitious pages, for which PHYS_TO_VM_PAGE()
returns proper fictitious vm_page_t. The range should be de-registered
after consumer stopped using it.
De-inline the PHYS_TO_VM_PAGE() since it now carries code to iterate
over registered ranges.
A hash container might be developed instead of range registration
interface, and fake pages could be put automatically into the hash,
were PHYS_TO_VM_PAGE() could look them up later. This should be
considered before the MFC of the commit is done.
Sponsored by: The FreeBSD Foundation
Reviewed by: alc
MFC after: 1 month
kib [Sat, 12 May 2012 20:34:22 +0000 (20:34 +0000)]
Split the code from vm_page_getfake() to initialize the fake page struct
vm_page into new interface vm_page_initfake(). Handle the case of fake
page re-initialization with changed memattr.
Sponsored by: The FreeBSD Foundation
Reviewed by: alc
MFC after: 1 month
marius [Sat, 12 May 2012 18:11:26 +0000 (18:11 +0000)]
Add glue/support for the SAM9XE512-based Ethernut 5 boards. Currently,
all integrated and on-board peripherals except the DataFlash (at91_spi(4)
and at45d(4) still need to be unb0rken) and NAND Flash (missing NAND
framework) are working.
AFAICT, this makes FreeBSD the first operating system besides Nut/OS
supporting Ethernut 5 out of tree.
rpaulo [Sat, 12 May 2012 14:37:25 +0000 (14:37 +0000)]
Convert the if_vr(4) driver model to the interrupt filter model and use
a taskqueue.
This gives a 16% performance improvement under high load on slow systems,
especially when vr shares an interrupt with another device, which is
common with the Alix x86 boards.
Contrary to the other devices, I left the interrupt processing for loop
in because there was no significant difference in performance and this
should avoid enqueuing more taskqueues unnecessarily.
We also decided to move the vr_start_locked() call inside the for loop
because we found out that it helps performance since TCP ACKs now have a
chance to go out quicker.
mav [Sat, 12 May 2012 13:55:36 +0000 (13:55 +0000)]
Add two functions xpt_batch_start() and xpt_batch_done() to the CAM SIM KPI
to allow drivers to handle request completion directly without passing
them to the CAM SWI thread removing extra context switch.
Modify all ATA/SATA drivers to use them.
projects / FreeBSD / FreeBSD.git / log