Commit Graph

33347 Commits

Author SHA1 Message Date
Don Lewis
bb1dd7a45a Lock inp while we're accessing it. 2002-07-12 08:05:22 +00:00
Peter Wemm
f1b665c8fe Revive backed out pmap related changes from Feb 2002. The highlights are:
- It actually works this time, honest!
- Fine grained TLB shootdowns for SMP on i386.  IPI's are very expensive,
  so try and optimize things where possible.
- Introduce ranged shootdowns that can be done as a single IPI.
- PG_G support for i386
- Specific-cpu targeted shootdowns.  For example, there is no sense in
  globally purging the TLB cache for where we are stealing a page from
  the local unshared process on the local cpu.  Use pm_active to track
  this.
- Add some instrumentation for the tlb shootdown code.
- Rip out SMP code from <machine/cpufunc.h>
- Try and fix some very bogus PG_G and PG_PS interactions that were bad
  enough to cause vm86 bios calls to break.  vm86 depended on our existing
  bugs and this was the cause of the VESA panics last time.
- Fix the silly one-line error that caused the 'panic: bad pte' last time.
- Fix a couple of other silly one-line errors that should have caused more
  pain than they did.

Some more work is needed:
- pmap_{zero,copy}_page[_idle].  These can be done without IPI's if we
  have a hook in cpu_switch.
- The IPI handlers need some cleanup.  I have a bogus %ds load that can
  be avoided.
- APTD handling is rather bogus and appears to be a large source of
  global TLB IPI shootdowns for no really good reason.

I see speedups of between 1.5% and ~4% on buildworlds in a while 1 loop.
I expect to see a bigger difference when there is significant pageout
activity or the system otherwise has memory shortages.

I have backed out a few optimizations that I had been using over the last
few days in order to be a little more conservative.  I'll revisit these
again over the next few days as the dust settles.

New option:  DISABLE_PG_G - In case I missed something.
2002-07-12 07:56:11 +00:00
Alfred Perlstein
d11a56617d regen for freebsd4_sendfile(2) compat. 2002-07-12 06:52:44 +00:00
Alfred Perlstein
9c34129662 Create a bug-for-bug FreeBSD4 compatible version of sendfile and move the
fixed sendfile over.  This is needed to preserve binary compatibility from
4.x to 5.x.
2002-07-12 06:51:57 +00:00
Alfred Perlstein
074453c230 Introduce syscall.master option 'COMPAT4' which allows one to wrap
syscalls for FreeBSD 4 compatibility.
Add kernel option COMPAT_FREEBSD4 to enable these syscalls.
2002-07-12 06:38:34 +00:00
Peter Wemm
4a0226c633 Unexpand a couple of 8-space indents that I added in rev 1.285. 2002-07-12 04:58:51 +00:00
Peter Wemm
a7e9138e37 Avoid a vm_page_lookup() - that uses a spinlock protected hash. We can
just use the object's memq for our nefarious purposes.
2002-07-12 04:38:51 +00:00
Alan Cox
7538e5500d o Lock some (unfortunately, not yet all) accesses to the page queues. 2002-07-12 03:17:22 +00:00
Alan Cox
60e15726af o Lock accesses to the page queues. 2002-07-12 02:55:55 +00:00
Kenneth D. Merry
a720097d24 Fix compilation with ENABLE_VFS_IOOPT turned on and ZERO_COPY_SOCKETS
turned off.

Clean up #ifdefs, and remove a bunch of unnecessary includes.

Reviewed by:	bde
Tested by:	netchild
2002-07-12 02:23:55 +00:00
Don Lewis
0e1eebb846 Defer calling SYSCTL_OUT() until after the locks have been released. 2002-07-11 23:18:43 +00:00
Don Lewis
142b2bd644 Reduce the nesting level of a code block that doesn't need to be in
an else clause.
2002-07-11 23:13:31 +00:00
Julian Elischer
5e3da64ee9 Remove debugging code that I originally only wanted to be there for a couple of days after merge.
Reminded with pointy stick by: jhb
2002-07-11 22:47:58 +00:00
John Baldwin
78dee2638a thread_exit() requires PROC_LOCK to be held, so lock it. 2002-07-11 22:13:33 +00:00
John Baldwin
eb80408cff Add a missing newline during panic printf's for SMP systems that don't
have APICS.  (Like all the !i386 archs).
2002-07-11 21:56:37 +00:00
Bruce Evans
b147fcf936 Fixed misspelling of "hint." as "hints." in the description of the "hint."
keyword and in the description of rp's hints.

Didn't fix rp's hints being mostly in comments so that they are harder to
use (they don't get linted either way because makeLINT.sh strips them and
there is no compile-time syntax checking of hints anyway).
2002-07-11 20:43:37 +00:00
Alan Cox
97646f567d o Lock accesses to the page queues. 2002-07-11 18:48:05 +00:00
Matthew Dillon
3d8f797ac1 Convert old style (type foo *)0 casts to NULLs
PR:		kern/40360
Requested by:	Hiten PAndya via direct email
2002-07-11 17:54:58 +00:00
Ruslan Ermilov
6dc6a04be5 Do not override the standard `distribute' target that is currently
available from bsd.obj.mk.

The native version was identical (and pretty much unused except in
the -DMODULES_WITH_WORLD case, which it is not for "make release")
except that the "bin" -> "base" change of the default DISTRIBUTION
name did not propagate here.
2002-07-11 14:13:37 +00:00
Peter Wemm
da035a22eb Bah, move the invltlb counter to C code and hook a debug sysctl onto it. 2002-07-11 08:31:10 +00:00
Peter Wemm
dedf64505a s/NCPU/MAXCPU/ to try and get this to compile. 2002-07-11 08:24:33 +00:00
Kenneth D. Merry
2c8f5a28bb Move the MSIZE and MCLSHIFT options out of the undocumented section in
NOTES.  Add some comments about the potential problems associated with NIC
driver modules and changing these options.

Fix sorting problems in sys/conf/options with the MSIZE and MCLSHIFT
options.

Reviewed by:	bde
2002-07-11 04:15:53 +00:00
Matt Jacob
dbf6d71cba Remove a couple of debugging lines. 2002-07-11 03:27:30 +00:00
Matt Jacob
e05ec8935c Enable ISP SBus support. 2002-07-11 03:26:39 +00:00
Matt Jacob
73030e03ce 'Support' for ISP SBus cards.
This code does not imply that SBus cards work yet. They hang for me.
But I can't netboot the latest snapshot on my ultra1e, and things
hang at bus_setup_intr time.

Since I'm offline for a while, I thought I'd toss this in in case somebody
else who has a bit better luck wants to fart around with it. Please try
and wait until I get back to check things in.
2002-07-11 03:25:04 +00:00
Matthew Dillon
7fb2cdd9ee Disable format checking for NULL-passing prototypes (really only err*(),
warn*(), and setproctitle() functions) to buildworld work again.  This
can be cleaned up later if/when a new GCC supports the feature (but personally
I think it's a waste of time to keep mod'ing imported GCC sources for this
since only three procedures are involved).

Suggested by: peter
2002-07-11 02:51:02 +00:00
Alan Cox
9688f93163 o Add a "needs wakeup" flag to the vm_map for use by kmem_alloc_wait()
and kmem_free_wakeup().  Previously, kmem_free_wakeup() always
   called wakeup().  In general, no one was sleeping.
 o Export vm_map_unlock_and_wait() and vm_map_wakeup() from vm_map.c
   for use in vm_kern.c.
2002-07-11 02:39:24 +00:00
Jonathan Mini
aaa1c7715b Revert removal of cred_free_thread(): It is used to ensure that a thread's
credentials are not improperly borrowed when the thread is not current in
the kernel.

Requested by:	jhb, alfred
2002-07-11 02:18:33 +00:00
Matt Jacob
74496412c4 Add SBus firmware (compiled in only for sparc systems). 2002-07-11 01:55:15 +00:00
Julian Elischer
83587634ec fix a comment and note a problem with XXXSMP 2002-07-10 21:17:23 +00:00
Julian Elischer
d50fe601d4 This file has been included en-mass into i386/i386/exception.s 2002-07-10 21:07:47 +00:00
Matthew Dillon
50b6a55512 Remove the critmode sysctl - the new method for critical_enter/exit (already
the default) is now the only method for i386.

Remove the paraphanalia that supported critmode.  Remove td_critnest, clean
up the assembly, and clean up (mostly remove) the old junk from
cpu_critical_enter() and cpu_critical_exit().
2002-07-10 20:15:58 +00:00
David E. O'Brien
b8e7c5a8e1 Consistently line-up /**/ comments so they don't cause line wrappage. 2002-07-10 19:36:04 +00:00
Johan Karlsson
92da2e7671 Open accounting file for appending, not general writing.
This allows accton(1) to be used with an append-only file.

PR:		7169
Reported by:	Joao Carlos Mendes Luis <jonny@jonny.eng.br>
Reviewed by:	bde
Approved by:	sheldonh (mentor)
MFC after:	2 weeks
2002-07-10 17:31:58 +00:00
Maxim Sobolev
8c6d67ef99 Add PCI ID and configuration hint for Netmos Nm9845 PCI 6-ports serial
card.

Submitted by:	Oleg Antoshin <oleh@at2000.kiev.ua>
MFC after:	3 days
2002-07-10 17:26:11 +00:00
Matthew Dillon
d331c5d43f Replace the global buffer hash table with per-vnode splay trees using a
methodology similar to the vm_map_entry splay and the VM splay that Alan
Cox is working on.  Extensive testing has appeared to have shown no
increase in overhead.

Disadvantages
    Dirties more cache lines during lookups.

    Not as fast as a hash table lookup (but still N log N and optimal
    when there is locality of reference).

Advantages
    vnode->v_dirtyblkhd is now perfectly sorted, making fsync/sync/filesystem
    syncer operate more efficiently.

    I get to rip out all the old hacks (some of which were mine) that tried
    to keep the v_dirtyblkhd tailq sorted.

    The per-vnode splay tree should be easier to lock / SMPng pushdown on
    vnodes will be easier.

    This commit along with another that Alan is working on for the VM page
    global hash table will allow me to implement ranged fsync(), optimize
    server-side nfs commit rpcs, and implement partial syncs by the
    filesystem syncer (aka filesystem syncer would detect that someone is
    trying to get the vnode lock, remembers its place, and skip to the
    next vnode).

Note that the buffer cache splay is somewhat more complex then other splays
due to special handling of background bitmap writes (multiple buffers with
the same lblkno in the same vnode), and B_INVAL discontinuities between the
old hash table and the existence of the buffer on the v_cleanblkhd list.

Suggested by: alc
2002-07-10 17:02:32 +00:00
Hajimu UMEMOTO
1116a8c98e - fixed the order of searching SA table for packets.
- comment about deletion of SA that has not been used by reaching
  soft lifetime.

Obtained from:	KAME
MFC after:	2 week
2002-07-10 16:39:38 +00:00
Mike Barcroft
f889202ba4 Remove label_t and physadr, which seem to have never been used in
FreeBSD.

Submitted by:	bde
2002-07-10 15:47:59 +00:00
Benno Rice
99bc8c72f7 Add setjmp (needed for DDB). 2002-07-10 12:26:17 +00:00
Benno Rice
45b4eca56d Add DDB support. 2002-07-10 12:21:54 +00:00
Benno Rice
c3e9df1087 - Make sure we don't trample our metadata pointer in our initial bootstrap.
- Load metadata parameters.
2002-07-10 12:16:48 +00:00
Benno Rice
db015117ba Metadata definitions. 2002-07-10 12:14:23 +00:00
Benno Rice
631c19755e Add support for passing metadata. 2002-07-10 12:13:16 +00:00
Benno Rice
336cca9e5f Incorporate changes made to the NetBSD version of this driver.
- Remove some obsolete code (NetBSD gem.c r1.12)
- Clean up how the local MAC address is programmed (NetBSD gem.c r1.13)
- Make the driver work on PowerMacs with gigabit interfaces
  (NetBSD gem.c r1.14 and r1.15, gemreg.h r1.3 and r1.4, gemvar.h r1.6 and 1.7)
- Suppress RX_MAC interrutps regarding the FRAME_COUNT register.
  (NetBSD gem.c r1.16 and r1.17)
- Fix receiver lockups. (NetBSD gem.c r1.18, gemvar.h r1.8)
- Distinguish between Apple and Sun variants (NetBSD if_gem_pci.c r1.9)

Reviewed by:	tmm
Obtained from:	NetBSD
2002-07-10 10:24:23 +00:00
Benno Rice
d030984167 Remove some diagnostic code that snuck in. 2002-07-10 09:48:43 +00:00
Benno Rice
ec3772f3fd Remove some dead code. 2002-07-10 09:46:49 +00:00
Benno Rice
3af09242a8 Remove some unused includes. 2002-07-10 09:46:24 +00:00
Julian Elischer
ad22735e3f Don't slow every syscall and trap by doing locks and stuff if the
'stop' bits are not set. This is a temporary thing.. I think this code probably
needs to be rewritten anyhow.
2002-07-10 06:40:22 +00:00
Don Lewis
832dafad3d Rearrange the code so that it checks whether the file is something
valid to write a core dump to before doing the preparations to actually
write to the file.

Call VOP_GETATTR() before dropping the initial vnode lock.
2002-07-10 06:31:35 +00:00
Bruce Evans
5287ec6ef0 Fixed compiling with -D_POSIX_SOURCE. The previous commit was supposed to
fix this, but actually broke it a little differently by adding 2 invalid
references to struct timespec while fixing 1.
2002-07-10 05:21:14 +00:00