Commit Graph

1427 Commits

Author SHA1 Message Date
Bruce Evans
b1037dcd53 #include <machine/limits.h> explicitly in the few places that it is required. 1997-08-21 20:33:42 +00:00
Steve Passe
fbca51f50a Added a half dozen casts to eliminate annoying warnings. 1997-08-21 06:39:41 +00:00
Philippe Charnier
40d5099441 Revert my previous commit about using CS_SECURE macro.
Requested by:	Bruce.
1997-08-21 06:33:04 +00:00
Steve Passe
4a73d99f7e Made PEND_INTS default.
Made NEW_STRATEGY default.
Removed misc. old cruft.

Centralized simple locks into mp_machdep.c
Centralized simple lock macros into param.h

More cleanup in the direction of making splxx()/cpl MP-safe.
1997-08-21 05:08:25 +00:00
John Dyson
745b842305 Some corrections to the anonymous page managment.
Submitted by:	Peter Chen <pmchen@eecs.umich.edu>
1997-08-21 01:35:37 +00:00
Steve Passe
7b185ef809 Preperation for moving cpl into critical region access.
Several new fine-grained locks.
New FAST_INTR() methods:
 - separate simplelock for FAST_INTR, no more giant lock.
 - FAST_INTR()s no longer checks ipending on way out of ISR.
sio made MP-safe (I hope).
1997-08-20 05:25:48 +00:00
Steve Passe
77625cfe0b Moved splq() to isa/ipl_funcs.c for SMP only.
This is in preperation for moving all cpl accesses behind a critical region lock.
1997-08-20 05:19:49 +00:00
Peter Wemm
1a5018a043 Implement XPG/SYSV-style getpgid()/getsid() syscalls. getpgid() uses the
same syscall number as NetBSD/OpenBSD.  The getpgid() came from NetBSD
(I think) originally, but it's basically cut/paste/edit from the other
simple get*() syscalls.
1997-08-19 06:00:27 +00:00
Peter Wemm
217cb20cdc Regenerate 1997-08-19 05:57:04 +00:00
Peter Wemm
6871cc6262 SVR4/XPG-style getpgid()/getsid() syscalls. 1997-08-19 05:53:48 +00:00
John Dyson
891e0f24c4 Allow lockmgr to work without a current process. Disallowing that
was a mistake in the lockmgr rewrite.
1997-08-19 00:27:07 +00:00
Philippe Charnier
15f3549108 Use CS_SECURE macro.
Reviewed by:	John Dyson
1997-08-18 06:58:59 +00:00
Steve Passe
7cbfd031b6 Added includes of smp.h for SMP.
This eliminates a bazillion warnings about implicit s_lock & friends.
1997-08-18 03:29:21 +00:00
John Dyson
03e9c6c101 Fix kern_lock so that it will work. Additionally, clean-up some of the
VM systems usage of the kernel lock (lockmgr) code.  This is a first
pass implementation, and is expected to evolve as needed.  The API
for the lock manager code has not changed, but the underlying implementation
has changed significantly.  This change should not materially affect
our current SMP or UP code without non-standard parameters being used.
1997-08-18 02:06:35 +00:00
Julian Elischer
ff36905c57 Take verbal beating by wollman into account and fix DIAGNOSTIC test.
This version.
1/ avoids garret's introduced  potential page fault. (I got one)
2/ removes compiler warnings

Also fix the tunable scheduling quantum to return a better error code when
fed a bad argument.
1997-08-18 01:34:38 +00:00
Garrett Wollman
fa5cde129b Delete a bit of debugging code that mistakenly crept in, and as a consequence
revert rev. 1.28's header file additions which are no longer needed.
1997-08-17 19:47:28 +00:00
Tor Egge
19c0663e5e Use KERNBASE, not 0xf0000000. 1997-08-17 17:40:11 +00:00
Garrett Wollman
57bf258e3d Fix all areas of the system (or at least all those in LINT) to avoid storing
socket addresses in mbufs.  (Socket buffers are the one exception.)  A number
of kernel APIs needed to get fixed in order to make this happen.  Also,
fix three protocol families which kept PCBs in mbufs to not malloc them
instead.  Delete some old compatibility cruft while we're at it, and add
some new routines in the in_cksum family.
1997-08-16 19:16:27 +00:00
Garrett Wollman
62f74f2f72 Dejulianize DIAGNOSTIC panic code. The types are wrong; probably there's
a missing dereference.
1997-08-16 19:07:20 +00:00
Steve Passe
3905c09afb The promised "better fix" for "Trap 9 When Boot SMP" problem.
We now tsleep() in kthread_init() between start_init()
and prepare_usermode() while waiting for ALL the idle_loop()
processes to come online.

Debugged & tested by:	"Thomas D. Dean" <tomdean@ix.netcom.com>

Reviewed by:	David Greenman <dg@root.com>
1997-08-15 02:33:30 +00:00
Andrey A. Chernov
cd9f713d45 setitimer: if it_value == 0 clear it_interval now
non-zero it_interval values have no sense if it_value == 0 but
checked by itimerfix which may cause EINVAL return
1997-08-14 08:15:12 +00:00
Steve Passe
22e5e9b058 Cheap TEMPORARY fix for "Trap 9 When Boot SMP" problem.
This is on the top of my list for a correct fix.

Submitted by:	"Thomas D. Dean" <tomdean@ix.netcom.com>
1997-08-13 23:05:33 +00:00
Julian Elischer
3d0a7bc3b8 add a diagnostic to catch some common cases of tsleep being
called from the wrong place.
1997-08-13 19:29:33 +00:00
Andrey A. Chernov
76aab1da0f Bypass itimerfix 100000000 limit in nanosleep1 using loop through timeouts 1997-08-13 17:55:11 +00:00
John Dyson
0b6e0f74f9 Back out a part of the disk scheduling "improvements" :-(. Let me know
how the system works now!!!
1997-08-12 19:07:42 +00:00
Steve Passe
cb02d4da35 Cheap fix for kern/4255.
If the problem is seen this fix suggests a compile-time work-around then panics.
1997-08-10 19:32:38 +00:00
Steve Passe
7acc960834 Some fixes towards making "default configs" work again.
Still not fixed, no idea why.

Debug help from: "Thomas D. Dean" <tomdean@ix.netcom.com>
1997-08-09 23:01:03 +00:00
John Dyson
c0ecffb96b Modify the scheduling policy to take into account disk I/O waits
as chargeable CPU usage.  This should mitigate the problem of processes
doing disk I/O hogging the CPU.  Various users have reported the
problem, and test code shows that the problem should now be gone.
1997-08-09 10:13:32 +00:00
Julian Elischer
63fe995cb4 Teach both disk drivers how to cope with a hardware watchdog
while dumping core.. I'm tired of getting 1/2 of a core-dump

conditional on -DHW_WDOG for now
this will migrate to 2.2 as that's where I need it.
1997-08-09 01:44:25 +00:00
Julian Elischer
5230cfd2f4 Use up 4 precious bytes to give the kernel a hook to
support hardware watchdogs. The actual functions would be supplied in an LKM
or a linked file, but they need to hang off something.
1997-08-09 01:25:54 +00:00
John Dyson
48a09cf276 VM86 kernel support.
Work done by BSDI, Jonathan Lemon <jlemon@americantv.com>,
	Mike Smith <msmith@gsoft.com.au>, Sean Eric Fagan <sef@kithrup.com>,
	and probably alot of others.
Submitted by:	Jnathan Lemon <jlemon@americantv.com>
1997-08-09 00:04:06 +00:00
Julian Elischer
90405c80e1 Make the scheduler quantum a tunable parameter
Reviewd by: John Dyson  dyson@freebsd.org
1997-08-08 22:48:57 +00:00
Julian Elischer
a39a7bceee Make a function static to quieten gcc 1997-08-08 20:29:47 +00:00
Julian Elischer
e142af9aba Clean up the console muting functionality.
this has been in production now for a long time with no known effects.
1997-08-08 20:09:50 +00:00
Steve Passe
6b556c4b4c Fixes kern/3835: SMP kernel crash on enable "dumps on wd0"
- SMP: set value of curproc in main(), before the SYSINIT stuff runs.

Reviewed by:	Bruce Evans <bde@zeta.org.au>
1997-08-07 21:22:29 +00:00
John Dyson
0d65e566b9 Another attempt at cleaning up the new memory allocator. 1997-08-05 22:24:31 +00:00
John Dyson
e258d33a51 Fix up come cruft that I left on a previous commit. 1997-08-05 00:05:00 +00:00
John Dyson
3075778b63 Get rid of the ad-hoc memory allocator for vm_map_entries, in lieu of
a simple, clean zone type allocator.  This new allocator will also be
used for machine dependent pmap PV entries.
1997-08-05 00:02:08 +00:00
Steve Passe
248fcb669b pushed down "volatility" of simplelock to actual int inside the struct.
Submitted by:	 bde@zeta.org.au, smp@csn.net
1997-08-04 19:11:26 +00:00
John Dyson
23be6be853 Fix a problem with the vfs vnode caching that it doesn't grow quickly
enough and can cause some strange performance problems.  Specifically, at
or near startup time is when the problem is worst.  To reproduce
the problem, run "lat_syscall stat" from the alpha lmbench code right
after bootup.  A positive side effect of this mod is that the name
cache can be set to grow again by sysctl.  A noticable positive
performance impact is realized due to a larger namecache being available
as needed (or tuned.)
1997-08-04 07:43:28 +00:00
Poul-Henning Kamp
2401f27c25 remove unused MAXVNODEUSE macro. 1997-08-04 07:31:36 +00:00
David Greenman
a78e8d2a83 Fixed security hole with sharing the file descriptor table (via rfork)
when execing a setuid/setgid binary. Code submitted by Sean Eric Fagan
(sef@freebsd.org).
Also consolidated the setuid/setgid checks into one place.
Reviewed by:	dyson,sef
1997-08-04 05:39:24 +00:00
Bruce Evans
3fc9295da7 Fixed syscall arg checking in clock_settime(). Stack garbage was
checked to be >= 0.  This bug was introduced in rev.1.26.

Reported by:	John Hay <jhay@mikom.csir.co.za>
1997-08-03 07:26:50 +00:00
Bruce Evans
1fd0b0588f Removed unused #includes. 1997-08-02 14:33:27 +00:00
Steve Passe
da9f018228 Converted the TEST_LOPRIO code to default.
Created mplock functions that save/restore NO registers.
Minor cleanup.
1997-07-31 05:43:05 +00:00
John-Mark Gurney
5e2022633a fix a few problems with pty. warn about how if you only have 1 pty
defined, your really getting 32.  Also warn about how you can't have
more than 256 pty's when your using DEVFS (non DEVFS can use more, just
the makedev script doesn't know how to make >256).  it also doesn't
allocate more memory than needed in this case.

Make sure that the signal passed in TIOCSIG isn't 0 as it might cause
a panic.  I personally haven't seen this happen, but after a similar
bug in syscons crashed my machine, I'm acutely aware of this one. :)
1997-07-30 10:05:18 +00:00
Steve Passe
412f3e4d71 Modified the PEND_INTS algorithm to fix the ISA INT loss problem.
Noticed by:	dave adkins <adkin003@gold.tc.umn.edu> and others.
1997-07-28 03:59:54 +00:00
Steve Passe
f9e8dbb8c3 mpapic.c & mp_machdep:
- removed TEST_ALTTIMER.
 - removed APIC_PIN0_TIMER.
 - removed TIMER_ALL.

mplock.s:
 - minor update of try_mplock for new algorithm where a CPU uses try_mplock
	instead of get_mplock in the ISRs.
1997-07-26 01:55:19 +00:00
Steve Passe
812e4da7a8 New simple_lock code in asm:
- s_lock_init()
 - s_lock()
 - s_lock_try()
 - s_unlock()

Created lock for IO APIC and apic_imen  (SMP version of imen)
 - imen_lock

Code to use imen_lock for access from apic_ipl.s and apic_vector.s.
Moved this code *outside* of mp_lock.

It seems to work!!!
1997-07-23 20:47:19 +00:00
Steve Passe
f2aeb7eaac Cleaned up the FPU init. 1997-07-22 16:49:54 +00:00
Steve Passe
b9f415331e SMP code initializes the FPU of APs.
Suggested by:     Bruce Evans <bde@FreeBSD.ORG>
1997-07-21 17:03:22 +00:00
Steve Passe
35b3c4a0e5 Developed a new strategy for handling the 8254/8259/APIC issue. 1997-07-20 19:41:38 +00:00
Steve Passe
3577278519 Minor cleanup.
Pass string arg to apic_dump.
Moved bootverbose printing of SMP enabled INTs from clock.c to autoconf.c
1997-07-20 18:05:20 +00:00
Bruce Evans
e31521c3dd Removed unused #includes. 1997-07-20 08:37:24 +00:00
Bill Fenner
548af2789b Remove sonewconn() macro kludge, introduced in 4.3-Reno to catch argument
mismatches.  Prototypes do a much better job these days.

Noticed by:	bde
1997-07-19 20:15:43 +00:00
Steve Passe
1dec61e7c0 Added code to support #define APIC_PIN0_TIMER.
This code ALWAYS runs the 8254 timer thru the 8259 ICU.
It depricates the usage of "options SMP_TIMER_NC" in the config file.
1997-07-19 04:00:35 +00:00
Steve Passe
d2ecb616f2 Split TEST_CPUSTOP code into CPUSTOP_ON_DDBBREAK and mainline code. 1997-07-18 21:27:53 +00:00
Steve Passe
75c179003e printf cleanup. 1997-07-18 03:58:14 +00:00
John Dyson
78342719d6 Hopefully fix a few problems that could cause hangs in SMP mode.
1)	Make sure that the region mapped by a 4MB page is
	properly aligned.
2)	Don't turn on the PG_G flag in locore for SMP.  I plan
	to do that later in startup anyway.
3)	Make sure the 2nd processor has PSE enabled, so that 4MB
	pages don't hose it.

We don't use PG_G yet on SMP -- there is work to be done to make that
work correctly.  It isn't that important anyway...
1997-07-17 19:45:01 +00:00
Doug Rabson
f6b4c28555 Merge WebNFS support from NetBSD
Obtained from:	NetBSD
1997-07-17 07:17:33 +00:00
John Dyson
5aaef07c50 Clean up some lint associated with the AIO code. 1997-07-17 04:49:43 +00:00
Steve Passe
6c8a949030 Minor cleanup. 1997-07-15 02:46:37 +00:00
Bruce Evans
7e88aafca7 Use the correct size for a sector in the search for a label in
readdisklabel().  Sectors may be larger than DEV_BSIZE.
1997-07-13 15:53:20 +00:00
Steve Passe
7503ccc1c8 new code to control other CPUs: stop_cpus()/restart_cpus()/_Xstopcpu
this code is controlled by smptests.h: TEST_CPUSTOP, OFF by default

new code for handling mixed-mode 8259/APIC programming without 'ExtInt'
this code is controlled by smptests.h: TEST_ALTTIMER, ON by default
1997-07-13 01:22:48 +00:00
Steve Passe
409ba536dc Cleanup old stop_cpus/restart_cpus() cruft.
Leave TEST_TEST1 for now.
1997-07-13 01:07:57 +00:00
David Nugent
f4e39ee7af Adds sysctl int for shutdown timeout.
Reviewed by:	Poul-Henning Kamp <phk@dk.tfs.com>
1997-07-10 11:44:42 +00:00
Andrey A. Chernov
c6d372f6f3 Back out changes for 'conflicts' with IRQ, remove intr_registered() 1997-07-09 18:06:25 +00:00
Steve Passe
17ebd4d085 General cleanup of APIC code.
stop_cpus()/restart_cpus() STILL not working!
1997-07-08 23:46:00 +00:00
Steve Passe
a8988a70ce Reordered call to apic_initialize and setting invltlb_ok. 1997-07-08 23:25:40 +00:00
Steve Passe
9746742be0 stop_cpus(), currently BROKEN! (turned off in smptests.h by default).
restart_cpus(), currently BROKEN! (turned off in smptests.h by default).
1997-07-07 00:06:51 +00:00
John Dyson
2244ea07dc This is an upgrade so that the kernel supports the AIO calls from
POSIX.4.  Additionally, there is some initial code that supports LIO.
This code supports AIO/LIO for all types of file descriptors, with
few if any restrictions.  There will be a followup very soon that
will support significantly more efficient operation for VCHR type
files (raw.)  This code is also dependent on some kernel features
that don't work under SMP yet.  After I commit the changes to the
kernel to support proper address space sharing on SMP, this code
will also work under SMP.
1997-07-06 02:40:43 +00:00
Bruce Evans
43a6378726 Removed extra definition of constty. It is defined in subr_prf.c. 1997-07-01 00:52:37 +00:00
Bruce Evans
e747e4bcc1 Updated generated files (makesyscalls.sh changed). Only sysproto.h
really changed.
1997-06-29 17:47:32 +00:00
Bruce Evans
7a7bc7628c Don't generate unused nested #include of <sys/aio.h>. 1997-06-29 17:39:57 +00:00
Steve Passe
31d3baa2e0 Initialize private variable other_cpus during AP boot. 1997-06-27 23:38:32 +00:00
Steve Passe
b7f7f066f6 Added POST code output to various points of the startup code.
General cleanup.

New functions to stop/start CPUs via IPIs:

 - int stop_cpus( u_int map );
 - int restart_cpus( u_int map );

Turned off by default, enabled via smptests.h:TEST_CPUSTOP.
Current version has a BUG, perhaps a deadlock?
1997-06-27 23:33:17 +00:00
Steve Passe
4ef5e4e12c Program lint1 to handle NMIs.
Till now NMIs would be ignored.  Now an NMI is caught by the BSP.
APs still ignore NMI, am working on code to allow a CPU to stop other CPUs
via an IPI.
1997-06-27 22:27:18 +00:00
Tor Egge
b747f8bce4 Fill in some extra fields in the eproc structure. gdb uses this information
to determine where the data segment in core dumps should be mapped.
Reviewed by:	Peter Wemm <peter@spinner.dialix.com.au>
1997-06-27 15:42:05 +00:00
Peter Wemm
006ad618b8 Don't accept insane values for SO_(SND|RCV)BUF, and the low water marks.
Specifically, don't allow a value < 1 for any of them (it doesn't make
sense), and don't let the low water mark be greater than the corresponding
high water mark.

Pre-Approved by: wollman
Obtained from: NetBSD
1997-06-27 15:28:54 +00:00
Steve Passe
8b16756603 Merged/renamed functions:
- get_isa_apic_mask() -> isa_apic_mask()
 - get_isa_apic_irq() && get_eisa_apic_irq() -> isa_apic_pin()
 - get_pci_apic_irq() -> pci_apic_pin()
1997-06-25 21:01:52 +00:00
Joerg Wunsch
e16ed08126 Don't ever allow lowering the securelevel at all. Allowing it does
nothing good except of opening a can of (potential or real) security
holes.  People maintaining a machine with higher security requirements
need to be on the console anyway, so there's no point in not forcing
them to reboot before starting maintenance.

Agreed by:	hackers, guido
1997-06-25 07:31:47 +00:00
John Hay
5faa3121a9 Add tickadj to struct clockinfo, like NetBSD and OpenBSD.
NOTE: libc, time, kgmon and rpc.rstatd will have to be recompiled.
1997-06-24 18:21:09 +00:00
Tor Egge
3b5d3246bf Ensure that the boot CPU honours write protection in kernel mode.
This fixes one of the problems noted in PR kern/3688.
1997-06-24 17:26:07 +00:00
David Greenman
358311fe63 Killed bogus kernacc() call in malloc() DIAGNOSTIC code. kernacc() by
it's nature, locks the kernal_map, and this is deadly if kernal_map had
been locked previous to a (net) interrupt.
1997-06-24 09:41:00 +00:00
Steve Passe
ee889b3ba0 Fix calculation of initial mplock value.
We now use LOGICAL, not PHYSICAL, IDs to calculate the mplock.
1997-06-24 07:48:02 +00:00
Steve Passe
afbe6f7b6e Fixed breakage for "default" configurations in mptable_pass1(). 1997-06-24 06:55:30 +00:00
Peter Wemm
b3196e4b9f Preliminary support for per-cpu data pages.
This eliminates a lot of #ifdef SMP type code.  Things like _curproc reside
in a data page that is unique on each cpu, eliminating the expensive macros
like:    #define curproc (SMPcurproc[cpunumber()])

There are some unresolved bootstrap and address space sharing issues at
present, but Steve is waiting on this for other work.  There is still some
strictly temporary code present that isn't exactly pretty.

This is part of a larger change that has run into some bumps, this part is
standalone so it should be safe.  The temporary code goes away when the
full idle cpu support is finished.

Reviewed by: fsmp, dyson
1997-06-22 16:04:22 +00:00
John Dyson
3c631446d3 Remove a window during running down a file vnode. Also, the OBJ_DEAD
flag wasn't being respected during vref(), et. al.  Note that this
isn't the eventual fix for the locking problem.  Fine grained SMP
in the VM and VFS code will require (lots) more work.
1997-06-22 03:00:24 +00:00
John Dyson
2c1011f7ef Modifications to existing files to support the initial AIO/LIO and
kernel based threading support.
1997-06-16 00:29:36 +00:00
John Dyson
ee877a356c Add initial AIO/LIO kernel thread support files. This is preliminary, and
further features will be added.
1997-06-16 00:27:26 +00:00
John Dyson
6b195d32a1 Fix a problem with the VN device. Specifically, the VN device can
cause a problem of spiraling death due to buffer resource limitations.
The vfs_bio code in general had little ability to handle buffer resource
management, and now it does.  Also, there are a lot more knobs for tuning the
vfs_bio code now.  The knobs came free because of the need that there
always be some immediately available buffers (non-delayed or locked) for
use.  Note that the buffer cache code is much less likely to get bogged
down with lots of delayed writes, even more so than before.
1997-06-15 17:56:53 +00:00
Garrett Wollman
3f7773458e When APM is configured, turn off the power when halting for good. 1997-06-15 02:03:03 +00:00
Bruce Evans
ac5fcb6d4d Removed unused #includes. 1997-06-14 11:38:46 +00:00
Bruce Evans
bad324ca54 Fixed livelock in getnewbuf().
It is possible for multiple process to sleep concurrently waiting
for a buffer.  When the buffer shortage is a shortage of space but
not a shortage of buffer headers, the processes took turns creating
empty buffers and waking each other to advertise the brelse() of
the empties; progress was never made because tsleep() always found
another high-priority process to run and everything was done at
splbio(), so vfs_update never had a chance to flush delayed writes,
not to mention that i/o never had a chance to complete.

The problem seems to be rare in practice, but it can easily be
reproduced by misusing block devices, at least for sufficently slow
devices on machines with a sufficiently small buffer cache.  E.g.,
`tar cvf /dev/fd0 /kernel' on an 8MB system with no disk in fd0
causes the problem quickly; the same command with a disk in fd0
causes the problem not quite as quickly; and people have reported
problems newfs'ing file systems on block devices.

Block devices only cause this problem indirectly.  They are pessimized
for time and space, and the space pessimization causes the shortage
(it manifests as internal fragmentation in buffer_map).

This should be fixed in 2.2.
1997-06-13 08:30:40 +00:00
David Greenman
2e58c0f892 Disabled the kern.vnode sysctl variable. It's causing system crashes on
large systems and needs to be re-thinked or removed wholesale.
1997-06-10 02:48:08 +00:00
Andrey A. Chernov
7f533ff73f Add safety check in case "conflicts" keyword specified more times than
needed
1997-06-08 17:15:31 +00:00
Bruce Evans
7b3c84247b Preserve %fs and %gs across context switches. This has a relatively low
cost since it is only done in cpu_switch(), not for every exception.
The extra state is kept in the pcb, and handled much like the npx state,
with similar deficiencies (the state is not preserved across signal
handlers, and error handling loses state).
1997-06-07 04:36:10 +00:00
Doug Rabson
e90b93a1d0 Don't throw NFS B_DELWRI buffers back to the vm system in brelse.
Make sure that b_validoff..b_validend is at least as big as
b_dirtyoff..b_dirtyend.
1997-06-06 09:04:28 +00:00
Doug Rabson
501338ca4f Fix some performance problems with the NFS mmap fixes. 1997-06-03 09:42:43 +00:00
Doug Rabson
0c514a25a0 The defines INTR_FAST and INTR_EXCL are part of the public interface. The
previous commit made them private which broke things.
1997-06-02 10:46:28 +00:00