Commit Graph

48872 Commits

Author SHA1 Message Date
David E. O'Brien
186b870df3 Fix the 'DEBUG' argument code to unbreak the amd64 LINT build. 2004-08-16 10:54:25 +00:00
David E. O'Brien
3a2e3a4aa7 Fix the 'DEBUG' argument code to unbreak the LINT build. 2004-08-16 10:36:12 +00:00
David E. O'Brien
fa6a78376f Minor style.9 cleanup. 2004-08-16 10:33:35 +00:00
David Malone
da126abaf1 When looking for some extra data to include in the hash, use the
address of the dirhash, rather than the first sizeof(struct dirhash
*) bytes of the structure (which, thankfully, seem to be constant).

Submitted by:	Ted Unangst <tedu@zeitbombe.org>
MFC after:	2 weeks
2004-08-16 10:00:44 +00:00
Søren Schmidt
5f7a48ef1e Improve (hopefully) on the workaround code for devices that doesn't
interrupt when command is done, ie some ATAPI CD drives with no
media loaded.
2004-08-16 09:32:35 +00:00
Søren Schmidt
fe76f7b6c8 Fix Promise sx4/sx4000 support that broke on the latest race fixes. 2004-08-16 09:29:46 +00:00
David E. O'Brien
9c737de401 Increase the scaling of VM_KMEM_SIZE_MAX.
Submitted by:	alc
2004-08-16 08:35:22 +00:00
David E. O'Brien
78c37b0de8 s/MAX_SAFE_MAXVNODES/MAXVNODES_MAX/g 2004-08-16 08:33:37 +00:00
Pawel Jakub Dawidek
809a9dc601 Decrease debug level to 0. 2004-08-16 08:33:04 +00:00
Pawel Jakub Dawidek
5e6db16cd6 Fix warning. 2004-08-16 08:21:31 +00:00
Tim J. Robbins
84880f87d0 Add support for 32-bit Linux binary emulation on amd64:
- include <machine/../linux32/linux.h> instead of <machine/../linux/linux.h>
  if building with the COMPAT_LINUX32 option.
- make minimal changes to the i386 linprocfs_docpuinfo() function to support
  amd64. We return a fake CPU family of 6 for now.
2004-08-16 08:19:18 +00:00
Tim J. Robbins
6766a2386d Regen. 2004-08-16 08:07:06 +00:00
Tim J. Robbins
ea0fabbc4f Add preliminary support for running 32-bit Linux binaries on amd64, enabled
with the COMPAT_LINUX32 option. This is largely based on the i386 MD Linux
emulations bits, but also builds on the 32-bit FreeBSD and generic IA-32
binary emulation work.

Some of this is still a little rough around the edges, and will need to be
revisited before 32-bit and 64-bit Linux emulation support can coexist in
the same kernel.
2004-08-16 07:55:06 +00:00
Tim J. Robbins
4af2762336 Changes to MI Linux emulation code necessary to run 32-bit Linux binaries
on AMD64, and the general case where the emulated platform has different
size pointers than we use natively:
- declare certain structure members as l_uintptr_t and use the new PTRIN
  and PTROUT macros to convert to and from native pointers.
- declare some structures __packed on amd64 when the layout would differ
  from that used on i386.
- include <machine/../linux32/linux.h> instead of <machine/../linux/linux.h>
  if compiling with COMPAT_LINUX32. This will need to be revisited before
  32-bit and 64-bit Linux emulation support can coexist in the same kernel.
- other small scattered changes.

This should be a no-op on i386 and Alpha.
2004-08-16 07:28:16 +00:00
Tim J. Robbins
0e73a96209 Add a new type, l_uintptr_t, which is an unsigned integer type with the
same width as a pointer under Linux. Add two new macros, PTRIN and PTROUT,
which convert between l_uintptr_t and native pointers.
2004-08-16 07:05:44 +00:00
Pawel Jakub Dawidek
e81856c34c Connect RAID3 GEOM class to the build. 2004-08-16 06:36:21 +00:00
Warner Losh
b67471f34a Don't need to declare cbb module. don't know why I never saw
duplicate messages..
2004-08-16 06:33:58 +00:00
Peter Grehan
dbc13869ee Advertise that color is supported so that syscons doesn't come up
in monochrome mode when run as init.
2004-08-16 06:26:15 +00:00
Pawel Jakub Dawidek
2d1661a5b6 Introduce GEOM RAID3 class, i.e. kernel module, which implements RAID3
transformation and graid3(8) userland utility, which can be used for
configuration. No manual page yet, sorry.

Hardware provided by:	Daniel Seuffert
2004-08-16 06:23:14 +00:00
Alan Cox
c1fbc251cd - Introduce and use a new tunable "debug.mpsafevm". At present, setting
"debug.mpsafevm" results in (almost) Giant-free execution of zero-fill
   page faults.  (Giant is held only briefly, just long enough to determine
   if there is a vnode backing the faulting address.)

   Also, condition the acquisition and release of Giant around calls to
   pmap_remove() on "debug.mpsafevm".

   The effect on performance is significant.  On my dual Opteron, I see a
   3.6% reduction in "buildworld" time.

 - Use atomic operations to update several counters in vm_fault().
2004-08-16 06:16:12 +00:00
Robert Watson
40f2ac28a0 Always acquire the UNIX domain socket subsystem lock (UNP lock)
before dereferencing sotounpcb() and checking its value, as so_pcb
is protected by protocol locking, not subsystem locking.  This
prevents races during close() by one thread and use of ths socket
in another.

unp_bind() now assert the UNP lock, and uipc_bind() now acquires
the lock around calls to unp_bind().
2004-08-16 04:41:03 +00:00
Brian Feldman
7c938963a4 Rather than bringing back all of the changes to make VM map deletion
wait for system wires to disappear, do so (much more trivially) by
instead only checking for system wires of user maps and not kernel maps.

Alternative by:	tor
Reviewed by:	alc
2004-08-16 03:11:09 +00:00
Brian Feldman
8912c44d9f Add the missing knote_fdclose(). 2004-08-16 03:09:01 +00:00
Brian Feldman
1c0f9af5b5 Allocate the marker, when scanning a kqueue, from the "heap" instead of the
stack.  When swapped out, a process's kernel stack would be unavailable,
and we could get a page fault when scanning the same kqueue.

PR:	kern/61849
2004-08-16 03:08:38 +00:00
Warner Losh
9fea47c8e6 Didn't intend to commit debugging code enabled 2004-08-16 01:57:06 +00:00
Robert Watson
ce5f32de11 Annotate the current UNIX domain socket locking strategies, order,
strengths, and weaknesses in a comment.  Assert a copyright over the
changes made as part of the locking work.
2004-08-16 01:52:04 +00:00
Mike Silbersack
5173e8f567 Major enhancements to pipe memory usage:
- pipespace is now able to resize non-empty pipes; this allows
  for many more resizing opportunities

- Backing is no longer pre-allocated for the reverse direction
  of pipes.  This direction is rarely (if ever) used, so this cuts the
  amount of map space allocated to a pipe in half.

- Pipe growth is now much more dynamic; a pipe will now grow when
  the total amount of data it contains and the size of the write are
  larger than the size of pipe.  Previously, only individual writes greater
  than the size of the pipe would cause growth.

- In low memory situations, pipes will now shrink during both read
  and write operations, where possible.  Once the memory shortage
  ends, the growth code will cause these pipes to grow back to an appropriate
  size.

- If the full PIPE_SIZE allocation fails when a new pipe is created, the
  allocation will be retried with SMALL_PIPE_SIZE.  This helps to deal
  with the situation of a fragmented map after a low memory period has
  ended.

- Minor documentation + code changes to support the above.

In total, these changes increase the total number of pipes that
can be allocated simultaneously, drastically reducing the chances that
pipe allocation will fail.

Performance appears unchanged due to dynamic resizing.
2004-08-16 01:27:24 +00:00
Warner Losh
1ff2328528 Tweak the compatibility macros a little so that the device printing is
moved into them.
2004-08-15 23:39:18 +00:00
Warner Losh
cc81f0c35e Other part of the cbb isa/pci split. This likely is causing problems
wrt cbb module.
2004-08-15 23:17:54 +00:00
Marius Strobl
9c0c82c161 Add a kludge for building SBus-only kernels, i.e. kernels without support
for EBus, ISA and PCI, by compiling ofw_isa.c and ofw_pci_if.m unconditio-
nally. The correct way is to rewrite OF_decode_addr() in ofw_machdep.c in
a bus-neutral way. That's certainly possible but we unfortunately didn't
make it for FreeBSD 5.3.

Approved by:	tmm
2004-08-15 22:59:34 +00:00
Dag-Erling Smørgrav
c9b9a82654 Release the vnode cache mutex when calling vgone(), since vgone() may
sleep.  This makes pfs_exit() even less efficient than before, but on
the bright side, the vnode cache mutex no longer needs to be recursive.
2004-08-15 21:58:02 +00:00
Marius Strobl
775f3c3c28 Correct some uses of the wrong members of the *min()/*max()-familiy, e.g.
min() on unsigned long. None of these are believed to have been fatal though.

Reviewed by:	tmm
2004-08-15 21:37:52 +00:00
Alan Cox
87b9823ede - Make pmap_emulate_reference() MP and preemption safe. Previously, it
contained "sanity" checks that could be violated if another CPU modified
   the pmap between the emulation trap and locking the pmap in
   pmap_emulate_reference().  As a result, the pte could be inconsistent
   with the access that caused the emulation trap.  In such cases,
   pmap_emulate_reference() now flushes the current CPU's TLB entry and
   returns.
 - Make pmap_changebit() an inline function, reducing object code size.
2004-08-15 20:54:25 +00:00
Robert Watson
273ad9acbc Preemptive anti-footshooting: cause a #error if MP_WATCHDOG is compiled
with SCHED_ULE.
2004-08-15 20:32:40 +00:00
Robert Watson
932431328b Spell MP_WATCHDIG right: I fixed the build without MP_WATCHDOG after
testing MP_WATCHDOG, and used an incorrect ifdef.
2004-08-15 19:57:14 +00:00
Don Lewis
b6915bdbe5 Yet another tweak to the shutdown messages in boot():
Don't count busy buffers before the initial call to sync() and
  don't skip the initial sync() if no busy buffers were called.
  Always call sync() at least once if syncing is requested.  This
  defers the "Syncing disks, buffers remaining..." message until
  after the initial sync() call and the first count of busy
  buffers.  This backs out changes in kern_shutdown 1.162.

  Print a different message when there are no busy buffers after the
  initial sync(), which is now the expected situation.

  Print an additional message when syncing has completed successfully
  in the unusual situation where the work of syncing was done by
  boot().

  Uppercase one message to make it consistent with all of the other
  kernel shutdown messages.

Discussed with:	bde (in a much earlier form, prior to 1.162)
Reviewed by:	njl (in an earlier form)
2004-08-15 19:17:23 +00:00
Robert Watson
a632deec30 Add an "options MP_WATCHDOG" to i386. This option allows one of the
logical CPUs on a system to be used as a dedicated watchdog to cause a
drop to the debugger and/or generate an NMI to the boot processor if
the kernel ceases to respond.  A sysctl enables the watchdog running
out of the processor's idle thread; a callout is launched to reset a
timer in the watchdog.  If the callout fails to reset the timer for ten
seconds, the watchdog will fire.  The sysctl allows you to select which
CPU will run the watchdog.

A sample "debug.leak_schedlock" is included, which causes a sysctl to
spin holding sched_lock in order to trigger the watchdog.  On my Xeons,
the watchdog is able to detect this failure mode and break into the
debugger, which cannot otherwise be done without an NMI button.

This option does not currently work with sched_ule due to ule's push
notion of scheduling, similar to machdep.hlt_logical_cpus failing to
work with that scheduler.

On face value, this might seem somewhat inefficient, but there are a
lot of dual-processor Xeons with HTT around, so using one as a watchdog
for testing is not as inefficient as one might fear.
2004-08-15 18:02:09 +00:00
John-Mark Gurney
aafa519a46 move the declaration of struct kqlist into the non-KERNEL visable section
to fix userland.
2004-08-15 15:36:18 +00:00
Pawel Jakub Dawidek
f62d59df32 Avoid code duplication by introducing g_mirror_write_metadata() function,
which is used now by g_mirror_clear_metadata() function and
g_mirror_update_metadata() function.
2004-08-15 13:58:29 +00:00
Tim J. Robbins
ae8e14a6ac Replace linux_getitimer() and linux_setitimer() with implementations
based on those in freebsd32_misc.c, removing the assumption that Linux
uses the same layout for struct itimerval as we use natively.
2004-08-15 12:34:15 +00:00
Tim J. Robbins
d1d6dbf120 Avoid assuming that l_timeval is the same as the native struct timeval
in linux_select().
2004-08-15 12:24:05 +00:00
Tim J. Robbins
6fa534bad8 Use sv_psstrings from the current process's sysentvec structure instead
of PS_STRINGS. This is a no-op at present, but it will be needed when
running 32-bit Linux binaries on amd64 to ensure PS_STRINGS is in
addressable memory.
2004-08-15 11:52:45 +00:00
Ian Dowse
4ba861fa77 Use the USBD_FORCE_SHORT_XFER flag when setting up transmit transfers.
Without this, the device cannot detect the end of ethernet packets
whose size is a multiple of the USB packat size.

PR:		kern/70474
Submitted by:	Andrew Thompson <andy@fud.org.nz>
MFC after:	1 week
2004-08-15 10:51:21 +00:00
John-Mark Gurney
ad3b9257c2 Add locking to the kqueue subsystem. This also makes the kqueue subsystem
a more complete subsystem, and removes the knowlege of how things are
implemented from the drivers.  Include locking around filter ops, so a
module like aio will know when not to be unloaded if there are outstanding
knotes using it's filter ops.

Currently, it uses the MTX_DUPOK even though it is not always safe to
aquire duplicate locks.  Witness currently doesn't support the ability
to discover if a dup lock is ok (in some cases).

Reviewed by:	green, rwatson (both earlier versions)
2004-08-15 06:24:42 +00:00
Marius Strobl
115e9ac656 Fix a style(9) bug (variable definitions inside a nested scope) a patch
of mine introduced in revision 1.10.

Approved by:	marcel
Prodded by:	marcel
2004-08-15 02:17:20 +00:00
Robert Watson
d8939d82cb Add a new sysctl, debug.kdb.stop_cpus, which controls whether or not we
attempt to IPI other cpus when entering the debugger in order to stop
them while in the debugger.  The default remains to issue the stop;
however, that can result in a hang if another cpu has interrupts disabled
and is spinning, since the IPI won't be received and the KDB will wait
indefinitely.  We probably need to add a timeout, but this is a useful
stopgap in the mean time.

Reviewed by:	marcel
2004-08-15 02:06:27 +00:00
Marius Strobl
adb03c6788 sio(4), which never really worked on sparc64, was removed in favour of
uart(4) in sparc64/conf/GENERIC revision 1.63 about 9 months ago. Remove
its source files here, too.
2004-08-15 00:10:59 +00:00
Marius Strobl
efa79eb77e - Introduce an uart_cpu_identify() which is implemented in uart_cpu_<arch>.c
and that can be used as an identify function for all kinds of busses on a
  certain platform. Expect for sparc64 these are only stubs right now. [1]
- For sparc64, add code to its uart_cpu_identify() for registering the on-
  board ISA UARTs and their resources based on information obtained from
  Open Firmware.
  It would be better if this would be done in the OFW ISA code. However, due
  to the common FreeBSD ISA code and PNP-IDs not always being present in the
  properties of the ISA nodes there seems to be no good way to implement that.
  Therefore special casing UARTs as the sole really relevant ISA devices on
  sparc64 seemed reasonable. [2]

Approved by:	marcel
Discussed with:	marcel [1], tmm [2]
Tested by:	make universe
2004-08-14 23:54:27 +00:00
Marius Strobl
d25ed517a4 Add sparc64/pci/ofw_pci_if.m to the list of MFILES so modules can use
sparc64/pci/ofw_pci.h. This is a bit messy right now but (hopefully) will
get better once the MI OFW PCI code has moved from sparc64/pci to dev/ofw.
2004-08-14 23:53:04 +00:00
Marius Strobl
ac341582da Now that hme(4) is MI build its module on all platforms.
Tested by:	`make universe` and powerpc cross-build on i386
2004-08-14 22:40:16 +00:00