John Baldwin [Thu, 6 Jan 2011 22:24:00 +0000 (22:24 +0000)]
- Move sched_fork() later in fork() after the various sections of the new
thread and proc have been copied and zeroed from the old thread and
proc. Otherwise attempts to modify thread or process data in sched_fork()
could be undone.
- Don't copy td_{base,}_user_pri from the old thread to the new thread in
sched_fork_thread() in ULE. This is already done courtesy the bcopy()
of the thread copy region.
- Always initialize the real priority (td_priority) of new threads to the
new thread's base priority (td_base_pri) to avoid bogusly inheriting a
borrowed priority from the parent thread.
John Baldwin [Thu, 6 Jan 2011 22:19:15 +0000 (22:19 +0000)]
Only change the priority of timeshare threads to PRI_MAX_TIMESHARE
when yield() is called. Specifically, leave the priority of real time
and idle threads unchanged.
John Baldwin [Thu, 6 Jan 2011 22:17:07 +0000 (22:17 +0000)]
- Restore dropping the priority of syncer down to PPAUSE when it is idle.
This was lost when it was converted to using a condition variable instead
of lbolt.
- Drop the priority of flowtable down to PPAUSE when it is idle as well
since it is a similar background task.
John Baldwin [Thu, 6 Jan 2011 21:08:06 +0000 (21:08 +0000)]
Remove bogus usage of INTR_FAST. "Fast" interrupts are now indicated by
registering a filter handler rather than a threaded handler. Also remove
a bogus use of INTR_MPSAFE for a filter.
Warner Losh [Thu, 6 Jan 2011 21:07:51 +0000 (21:07 +0000)]
Make this work on big endian MIPS, while not breaking it for small
endian mips. This will also make it work automatically on all future
big endian platforms.
Rick Macklem [Thu, 6 Jan 2011 20:31:33 +0000 (20:31 +0000)]
Delete the NFS_STARTWRITE() and NFS_ENDWRITE() macros that
obscured vn_start_write() and vn_finished_write() for the
old OpenBSD port, since most uses have been replaced by the
correct calls.
tests: sort & fix includes, remove -include from CFLAGS of acct tests
- Sort the includes of pack.c, moving sys/*.h files near the top.
- Add a couple of missing #include lines, and remove the need for
custom -include options in the CFLAGS of the test Makefile.
- Remove the ad-hoc 'all' target, but keep its 'regress' bits for
testing.
- Convert the ad-hoc 'clean' target to proper CLEANFILES stuff,
so that the normal bsd.prog.mk machinery can clean up.
- Use `make -V .OBJDIR' to detect the place where 'pack' lives,
so that regress.t works both with and without 'make obj'.
Rick Macklem [Thu, 6 Jan 2011 19:50:11 +0000 (19:50 +0000)]
Since the VFS_LOCK_GIANT() code in the experimental NFS
server is broken and the major file systems are now all
mpsafe, modify the server so that it will only export
mpsafe file systems. This was discussed on freebsd-fs@
and removes a fair bit of crufty code.
Get rid of bad advice regarding /* NOTREACHED */. Compilers don't
really need it (one can use __dead2 instead), and style(9) was not
even consistent with itself in this regard.
Import support for the Sony Playstation 3 using the OtherOS feature
available on firmwares 3.15 and earlier.
Caveats: Support for the internal SATA controller is currently missing,
as is support for framebuffer resolutions other than 720x480. These
deficiencies will be remedied soon.
Special thanks to Peter Grehan for providing the hardware that made this
port possible, and thanks to Geoff Levand of Sony Computer Entertainment
for advice on the LV1 hypervisor.
Warner Losh [Wed, 5 Jan 2011 22:15:57 +0000 (22:15 +0000)]
Remove ancient simulation code. Skyeye simulation never really worked
quite right and hasn't been used in ages and is likely broken. QEMU
with GUMSTIX is a more promising road to FreeBSD/arm in emulation
anyway.
Dimitry Andric [Wed, 5 Jan 2011 21:46:08 +0000 (21:46 +0000)]
Remove superfluous -mno-(mmx|3dnow|sse|sse2|sse3) flags in Makefiles
under sys/boot/{i386,pc98}, since these are already added via
sys/boot/{i386,pc98}/Makefile.inc.
Andreas Tobler [Wed, 5 Jan 2011 21:38:02 +0000 (21:38 +0000)]
Fix null string handling in ofw_real_nextprop function. Pass the right
length to ofw_real_map in case of a null string.
This makes ofwdump(8) work correctly when trying to print all properties
with ofwdump -p.
Rick Macklem [Wed, 5 Jan 2011 19:35:35 +0000 (19:35 +0000)]
Modify the experimental NFS server so that it calls
vn_start_write() with a non-NULL vp. That way it will
find the correct mount point mp and use that mp for the
subsequent vn_finished_write() call. Also, it should fail
without crashing if the mount point is being forced dismounted
because vn_start_write() will set the mp NULL via VOP_GETWRITEMOUNT().
Rick Macklem [Wed, 5 Jan 2011 18:46:05 +0000 (18:46 +0000)]
Fix the experimental NFS server to use vfs_busyfs() instead
of vfs_getvfs() so that the mount point is busied for the
VFS_FHTOVP() call. This is analagous to r185432 for the
regular NFS server.
Marius Strobl [Wed, 5 Jan 2011 15:28:30 +0000 (15:28 +0000)]
Teach ifconfig(8) the handy shared option shortcut aliases the NetBSD
counterpart also takes, i.e. "fdx" for "full-duplex", "flow" for
"flowcontrol", "hdx" for "half-duplex" as well as "loop" and "loopback"
for "hw-loopback".
Add a man page for the Object Specific Data (OSD) KPI.
Although not directly related the FreeBSD Foundation funded "Five New TCP
Congestion Control Algorithms for FreeBSD" project, the understanding and
inspiration required to write this documentation was significantly bolstered
by the Foundation's support.
Fix page fault that occurred when trying to initialize preloaded kernel module,
the dependency of which was preloaded, but failed to initialize. Previously,
kernel dereferenced NULL pointer returned by modlist_lookup2(); now, when this
happens, we unload the dependent module. Since the depended_files list is
sorted in dependency order, this properly propagates, unloading modules that
depend on failed ones.
From the user point of view, this prevents the kernel from panicing when
trying to boot kernel compiled without KDTRACE_HOOKS with dtraceall_load="YES"
in /boot/loader.conf.
Gavin Atkinson [Tue, 4 Jan 2011 22:56:18 +0000 (22:56 +0000)]
Update committers-doc.dot, noving doc committer alumni into the alumni
section and recording the date these commit bits were returned. Also, sort
the remaining entries, and add a node for mheinen, who is already referenced
within the mentor relationships.
Other doc committers are encouraged to add themselves, and any mentor/mentee
relationships. The current rendered output is available at
http://people.freebsd.org/~gavin/comm-doc.png
Dimitry Andric [Tue, 4 Jan 2011 20:51:28 +0000 (20:51 +0000)]
On amd64 and i386, tell the compiler to refrain from generating SSE,
3DNow, MMX and floating point instructions in rtld-elf.
Otherwise, _rtld_bind() (and whatever it calls) could possibly clobber
function arguments that are passed in SSE/3DNow/MMX/FP registers,
usually floating point values. This can happen, for example, when clang
generates SSE code for memset() or memcpy() calls.
One symptom of this is sshd dying early on amd64 with "PRNG not seeded",
which is ultimately caused by libcrypto.so.6 calling RAND_add() with a
double parameter. That parameter is passed via %xmm0, which gets wiped
out by an SSE memset() in _rtld_bind().
Juli Mallett [Tue, 4 Jan 2011 19:32:03 +0000 (19:32 +0000)]
Correct an 8-year-old typo which reliably leads to typo after typo today:
The macros here for generating coprocessor 0 accessors are named like:
MIPS_RDRW32_COP0
That macro would produce mips_rd_<register>() and mips_wr_<register>()
inlines to access the specified register by name from C. The problem is that
the R and the W were swapped in the macros originally; it was meant to be named
RDWR because it generated mips_rd_* and mips_wr_* functions, but was instead
spelled RDRW, which nobody should be expected to get right by anything other
than copy and paste.
It's too many consonants in a row to keep straight anyway, so just prefer e.g.:
Pyun YongHyeon [Tue, 4 Jan 2011 19:10:54 +0000 (19:10 +0000)]
Partially revert change made in r212061. r212061 relied on
bus_dma(9)'s capability which honors boundary restrictions of DMA
tag for dynamic buffers. However it seems this does not work well
and it triggered watchodg timeouts on controller that has the
hardware bug. It's not clear whether there is still another
hardware bug not mentioned in errata. This should be revisited
since this change shall make use of bounce buffers which in turn
reduces performance a lot on systems that have more than 4GB
memory.
Reported by: Michael L. Squires (mikes <> siralan dot org)
Tested by: Michael L. Squires (mikes <> siralan dot org)
MFC after: 3 days
Juli Mallett [Tue, 4 Jan 2011 19:09:05 +0000 (19:09 +0000)]
Remove OCTEON1-32. Since moving to the Cavium SDK, we've lost our support for
running an o32 kernel safely, and would have to add interrupt disabling and
reenabling to a bunch of macros in the Simple Executive sources to support it.
The only reason one would run an o32 kernel on Octeon would be to run o32 world,
which is better worked towards by adding o32 binary compatibility to n64 kernels
along with, eventually, supporting multilib systems so o32 binaries can run
alongside n32 and n64 ones.
Marius Strobl [Tue, 4 Jan 2011 16:11:32 +0000 (16:11 +0000)]
Reserve INTR_MD[1-4] similarly to what BUS_DMA_BUS[1-4] are intended for
and switch sparc64 to use the first one for bus error filter handlers of
bridge drivers instead of (ab)using INTR_FAST for that so we eventually
can get rid of the latter.
Colin Percival [Tue, 4 Jan 2011 15:55:15 +0000 (15:55 +0000)]
Add hamfisted locking to the Xen/PV pmap code: Only allow one thread to
be in {pmap_pinit, pmap_copy, pmap_release} at a time.
This reduces the rate of panics when running 'make index' from ~0.6/hour
to ~0.02/hour (p < 10^-30).
At a later date this locking will be removed, and for this reason, it is
wrapped in #ifdef HAMFISTED_LOCKING; this temporary hack is being put in
place with the intention of shipping somewhat-stable Xen bits in FreeBSD
8.2-RELEASE.
Robert Watson [Tue, 4 Jan 2011 14:49:54 +0000 (14:49 +0000)]
Make "options XENHVM" compile for i386, not just amd64 -- a largely
mechanical change. This opens the door for using PV device drivers
under Xen HVM on i386, as well as more general harmonisation of i386
and amd64 Xen support in FreeBSD.
Instead of incrementing freework reference counter in indir_trunc(), do
it at the allocation time for journaled fs and indirect blocks, when
the allocated object is not accessible outside.
Juli Mallett [Tue, 4 Jan 2011 02:33:48 +0000 (02:33 +0000)]
o) Add MIPS_COP_0_EXC_PC accessors to <machine/cpufunc.h>.
o) Make the octeon_wdog driver work on multi-CPU systems and to also print more
information on NMI that may aid debugging. Simplify and clean up internal
API and structure.
Juli Mallett [Tue, 4 Jan 2011 02:11:03 +0000 (02:11 +0000)]
o) Unmask Central Interrupt Unit interrupts on APs, too.
o) There's no good reason to make the low bits of the ebase the core
number. While per-CPU exception bases would be nice, for now we just
need to make ebase the same on all cores.
Colin Percival [Tue, 4 Jan 2011 00:16:38 +0000 (00:16 +0000)]
Adjust the critical section protecting _xen_flush_queue to cover the
entire range where the page mapping request queue needs to be atomically
examined and modified.
Oddly, while this doesn't seem to affect the overall rate of panics
(running 'make index' on EC2 t1.micro instances, there are 0.6 +/- 0.1
panics per hour, both before and after this change), it eliminates
vm_fault from panic backtraces, leaving only backtraces going through
vmspace_fork.
Warner Losh [Mon, 3 Jan 2011 22:48:01 +0000 (22:48 +0000)]
When TARGET_ARCH_${kernel} gets set, it is using the host's config,
not the one we build as part of make world. This means that make
universe will fail if building on a too-old current or any stable
system prior to a few days ago in weird ways (parse errors from
shell). This copes with these old systems in two ways:
(1) Works around the WARNING: issue by filtering all warnings that
sneak onto stdout.
(2) if TARGET_ARCH_${kernel} winds up being empty, then we error out
immediately with a semi-useful error message. This usually comes from
config not groking -m.
Ideally, we'd use a buildworld's config here, but that's tricky, so
I'll leave that detail to others to fix (it has to be done post make
world for the arch rather than at the top level makefile). This
should make 'make universe' usable from recent 8-stable systems
(recent == last few months or so) for building -current. They have
-m, but spewed warnings out stdout. Older systems will now at least
get a firm error early rather than a confusing error late.
expand checkuser() to support the propagation of error codes back to
the caller. Currently, checkuser() does not differentiate between the
failure to open the file and the absence of a user in the file. Check
to see if there was an error opening the file. If there are any errors,
terminate the connection. Currently, the only exception to this rule
is ENOENT, since there is nothing that says the /etc/ftpuser
and /etc/ftpchroot has to exist.
Rick Macklem [Mon, 3 Jan 2011 20:37:31 +0000 (20:37 +0000)]
Fix the nlm so that it no longer depends on the regular
nfs client and, as such, can be loaded for the experimental
nfs client without the regular client.
John Baldwin [Mon, 3 Jan 2011 18:28:30 +0000 (18:28 +0000)]
Add a 'locked' variant of the foo_start() routine and call it directly
from interrupt handlers and watchdog routines instead of queueing a task
to call foo_start().
Rick Macklem [Mon, 3 Jan 2011 00:33:32 +0000 (00:33 +0000)]
Modify the experimental NFSv4 server so that the lookup
ops return a locked vnode. This ensures that the associated mount
point will always be valid for the code that follows the operation.
Also add a couple of additional checks
for non-error to the other functions that create file objects.
Rick Macklem [Sun, 2 Jan 2011 19:58:39 +0000 (19:58 +0000)]
Add checks for VI_DOOMED and vn_lock() failures to the
experimental NFS server, to handle the case where an
exported file system is forced dismounted while an RPC
is in progress. Further commits will fix the cases where
a mount point is used when the associated vnode isn't locked.
Marius Strobl [Sun, 2 Jan 2011 15:01:03 +0000 (15:01 +0000)]
Extend the section in which interrupts are disabled in the TLB demap
functions, otherwise if we get preempted after checking whether a certain
pmap is active on the current CPU but before disabling interrupts we might
operate on an outdated state as the pmap might have been deactivated in
the meantime. As the same issue may arises when the TLB demap function is
interrupted by a TLB demap IPI, just entering a critical section before
the check isn't sufficient so we have to fully disable interrupts instead.
Finishing touches to fork1() - ANSIfy missed function definition, style(9)
fixes, removal of few comments that didn't really make sense and addition
of fork_findpid() locking requirements.