Commit Graph

1427 Commits

Author SHA1 Message Date
Peter Wemm
6b8e64f55f Change VOP_SELECT to VOP_POLL 1997-09-14 02:35:25 +00:00
Peter Wemm
e25aa68e0c Extend select backend for sockets to work with a poll interface (more
detail is passed back and forwards).  This mostly came from NetBSD, except
that our interfaces have changed a lot and this funciton is in a different
part of the kernel.

Obtained from: NetBSD
1997-09-14 02:34:14 +00:00
Peter Wemm
42d1175732 Implement poll(2). This is mostly taken from the NetBSD implementation
(from some time ago) but with a few tweaks along the way.

Obtained from: NetBSD
1997-09-14 02:30:32 +00:00
Peter Wemm
818661c8f6 Regenerate (added poll etc) 1997-09-14 02:23:46 +00:00
Peter Wemm
8cb0553a7c Activate poll(2) syscall 1997-09-14 02:22:05 +00:00
Joerg Wunsch
245f17d43c Implement SA_NOCLDWAIT.
The implementation is done (unlike what i've originally been
contemplating) by reparenting kids of processes that have the
appropriate bit set to PID 1, and let PID 1 handle the zombie.  This
is far less problematical than what would seem to be ``doing it
right'', for a number of reasons.

Of our currently shipping PID-1-intended programs, 50 % fail the above
assumption. ;-)  (Read this: sysinstall doesn't do it right.  This is
no problem as long as no program called by sysinstall actually uses
SA_NOCLDWAIT.)

ToDo:		. clarify the correct SA_* flag inheritance, compared
		  to other systems,
		. decide whether the compat cruft (osigvec(9)) should
		  deal with new system additions or not,
		. merge OpenBSD's SA_SIGINFO implementation. ;)
Reviewed by:	bde
1997-09-13 19:42:29 +00:00
Peter Wemm
557fe2c5e1 print correct function name in a panic (vop_nolock -> vop_sharedlock) 1997-09-13 15:02:28 +00:00
Poul-Henning Kamp
bf1d104a34 3 lines of code and updates to a number of comments.
Reviewed by:	phk
Submitted by:	 Terry Lambert <tlambert@primenet.com>
1997-09-10 20:11:02 +00:00
Poul-Henning Kamp
c1f95f1378 The patch is needed in order to not throw away unmodified
local filesystem metadata at the first brelse call when the
block device vnode has v_tag set to VT_NFS.

Reviewed by:	phk
Submitted by:	Tor Egge <tegge@idi.ntnu.no>
1997-09-10 20:09:22 +00:00
Steve Passe
20233f27f4 General cleanup of the lock pushdown code. They are grouped and enabled
from machine/smptests.h:

#define PUSHDOWN_LEVEL_1
#define PUSHDOWN_LEVEL_2
#define PUSHDOWN_LEVEL_3
#define PUSHDOWN_LEVEL_4_NOT
1997-09-07 22:04:09 +00:00
Bruce Evans
2d85d0df17 Some staticized variables were still declared to be extern. 1997-09-07 16:56:34 +00:00
Bruce Evans
2931901b1d Removed trailing semicolons from the definitions of the sysctl
declaration macros so that a semicolon can be added when the macros
are invoked without giving a (pedantic) syntax error.  Invocations
need to be followed by a semicolon so that programs like indent and
gtags don't get confused.

Fixed the one invocation that wasn't followed by a trailing semicolon.
1997-09-07 16:53:52 +00:00
Bruce Evans
41fadeeb28 Removed yet more vestiges of config-time swap configuration and/or
cleaned up nearby cruft.
1997-09-07 16:21:11 +00:00
Bruce Evans
a910e75cdc Removed vestiges of config-time "argument processing" configuration. 1997-09-07 13:49:56 +00:00
Bruce Evans
bea0f0be7b Some staticized variables were still declared to be extern. 1997-09-07 05:27:26 +00:00
Peter Wemm
279a69322c Cosmetic adjustment for the trap/double fault/panic cpu id listing.
It now prints the apic id in hex rather than decimal.
1997-09-05 08:54:55 +00:00
Tor Egge
882e68c8a9 sonewconn no longer passes curproc to the protocol attach method
since that might cause in_pcballoc to call MALLOC with M_WAITOK during
a software interrupt.
Reviewed by:	Garrett Wollman <wollman@khavrinen.lcs.mit.edu>
1997-09-04 17:39:16 +00:00
Poul-Henning Kamp
4d1122bdd6 Revert to the previous hashing, double the hashtable size instead. 1997-09-04 08:24:44 +00:00
Poul-Henning Kamp
fd9d9ff13e Hmm, this is hopefully better. 1997-09-03 13:29:41 +00:00
Poul-Henning Kamp
119b6f4cf2 Use 2^N hash sizes rather than primesize, this replaces a division
with an and. (Submitted by davidg)

Preemptively record ".." values.

Reviewed by:	phk
1997-09-03 09:20:17 +00:00
Poul-Henning Kamp
7cb22688e9 Revert the v_usecount handling in relation to VOP_INACTIVE. 1997-09-03 09:18:48 +00:00
Bruce Evans
e4ba6a82b0 Removed unused #includes. 1997-09-02 20:06:59 +00:00
Bruce Evans
4d1d4912ae Added used #include - don't depend on <sys/mbuf.h> including
<sys/malloc.h> (unless we only use the bogusly shared M*WAIT flags).
1997-09-02 01:19:47 +00:00
Steve Passe
7245dff0f1 Cleanup. 1997-09-01 07:31:54 +00:00
Bruce Evans
e28b96049b Move closer to supporting VM86 under SMP.
LINT now compiles but doesn't link.  Other link-time breakage for LINT
is now visible (SMP is incompatible with SIMPLELOCK_DEBUG).
Submitted by:	jlemon
1997-09-01 01:54:52 +00:00
Bruce Evans
6d58e6cbc4 Fixed options SHOW_BUSYBUFS and PANIC_REBOOT_WAIT_TIME which were broken
by incomplete cutting and pasting from machdep.c to kern_shutdown.c.

PR:		3953
1997-08-31 23:08:38 +00:00
Poul-Henning Kamp
a051452ae2 Change the 0xdeadb hack to a flag called VDOOMED.
Introduce VFREE which indicates that vnode is on freelist.
Rename vholdrele() to vdrop().
Create vfree() and vbusy() to add/delete vnode from freelist.
Add vfree()/vbusy() to keep (v_holdcnt != 0 || v_usecount != 0)
  vnodes off the freelist.
Generalize vhold()/v_holdcnt to mean "do not recycle".
Fix reassignbuf()s lack of use of vhold().
Use vhold() instead of checking v_cache_src list.
Remove vtouch(), the vnodes are always vget'ed soon enough
  after for it to have any measuable effect.
Add sysctl debug.freevnodes to keep track of things.
Move cache_purge() up in getnewvnodes to avoid race.
Decrement v_usecount after VOP_INACTIVE(), put a vhold() on
  it during VOP_INACTIVE()
Unmacroize vhold()/vdrop()
Print out VDOOMED and VFREE flags (XXX: should use %b)

Reviewed by:		dyson
1997-08-31 07:32:39 +00:00
Steve Passe
2645264a72 Debug version of simple_lock. This will store the CPU id of the
holding CPU along with the lock.  When a CPU fails to get the lock
it compares its own id to the holder id.  If they are the same it
panic()s, as simple locks are binary, and this would cause a deadlock.

Controlled by smptests.h: SL_DEBUG, ON by default.

Some minor cleanup.
1997-08-31 03:17:48 +00:00
Steve Passe
78292efeef Another round of lock pushdown.
Add a simplelock to deal with disable_intr()/enable_intr() as used in UP kernel.
UP kernel expects that this is enough to guarantee exclusive access to
regions of code bracketed by these 2 functions.
Add a simplelock to bracket clock accesses in clock.c: clock_lock.

Help from:	Bruce Evans <bde@zeta.org.au>
1997-08-30 08:08:10 +00:00
KATO Takenori
662f9a6987 Move MACHINE_ARCH definition from <machine/param.h> to <machine/cpu.h>.
Submitted by:	Bruce Evans <bde@zeta.org.au>
1997-08-30 02:52:04 +00:00
KATO Takenori
664f85174a Added a sysctl arg, hw.machine_arch. The hw.machine_arch is "ibm-pc"
on IBM-PC box and is "pc-98" on NEC PC-98 box.  Userland program can
distinguish architecture on which the program runs.
1997-08-29 09:03:40 +00:00
Jonathan Lemon
5f07393373 Remove the vm86 support as an LKM, and link it directly into the kernel
if 'options "VM86"' is in the config file.  The LKM was really for
development, and has probably outlived its usefulness.
1997-08-28 14:36:56 +00:00
Peter Wemm
90bcb528a8 Correct some things I forgot about until it was too late with smp_active.
smp_active = 1 used to indicate that the system had frozen previously
started AP's, while smp_active = 0 was "AP's not yet started".  I have split
this into smp_started (which is set when the AP's come online), and
smp_active is left for turning on/off AP scheduling.
1997-08-26 18:36:15 +00:00
Peter Wemm
9a3b3e8bce Clean up the SMP AP bootstrap and eliminate the wretched idle procs.
- We now have enough per-cpu idle context, the real idle loop has been
revived (cpu's halt now with nothing to do).
- Some preliminary support for running some operations outside the
global lock (eg: zeroing "free but not yet zeroed pages") is present
but appears to cause problems.  Off by default.
- the smp_active sysctl now behaves differently. It's merely a 'true/false'
option.  Setting smp_active to zero causes the AP's to halt in the idle
loop and stop scheduling processes.
- bootstrap is a lot safer.  Instead of sharing a statically compiled in
stack a number of times (which has caused lots of problems) and then
abandoning it, we use the idle context to boot the AP's directly.  This
should help >2 cpu support since the bootlock stuff was in doubt.
- print physical apic id in traps.. helps identify private pages getting
out of sync.  (You don't want to know how much hair I tore out with this!)

More cleanup to follow, this is more of a checkpoint than a
'finished' thing.
1997-08-26 18:10:38 +00:00
Bruce Evans
d3114049c1 Restored rev.1.92 which was clobbered by the previous commit. 1997-08-26 11:59:20 +00:00
Poul-Henning Kamp
0fa2443f0e Uncut&paste cache_lookup().
This unifies several times in theory indentical 50 lines of code.

The filesystems have a new method: vop_cachedlookup, which is the
meat of the lookup, and use vfs_cache_lookup() for their vop_lookup
method.  vfs_cache_lookup() will check the namecache and pass on
to the vop_cachedlookup method in case of a miss.

It's still the task of the individual filesystems to populate the
namecache with cache_enter().

Filesystems that do not use the namecache will just provide the
vop_lookup method as usual.
1997-08-26 07:32:51 +00:00
John Dyson
a5db4bf475 Back out some incorrect changes that was worse than the original bug. 1997-08-26 04:36:27 +00:00
Bruce Evans
7d7fb492c5 Don't return EINVAL for negative timespecs in the nanosleep functions.
Negative timespecs are perfectly valid.  Just return 0 immediately
for them.  Also, return 0 immediately for zero timespecs.

Fixed some style bugs.
1997-08-26 00:40:04 +00:00
Bruce Evans
8a2d9f5076 Finished staticizing. 1997-08-26 00:31:04 +00:00
Bruce Evans
9a629c9302 Fixed some formatting and style bugs.
Fixed a gratuitous ANSIism.
1997-08-26 00:24:25 +00:00
Bruce Evans
1d9655ae4d Print more info in the "calcru: negative time" message. 1997-08-26 00:20:11 +00:00
Bruce Evans
eb776aea19 Fixed some gratuitous ANSIisms. 1997-08-26 00:15:04 +00:00
Bruce Evans
32545fd108 Removed some stale comments.
Fixed a gratuitous ANSIism.
1997-08-26 00:09:44 +00:00
Bruce Evans
282ec22c77 Removed redundant test against MAXDSIZ (the rlimit test is stronger). 1997-08-26 00:02:24 +00:00
Bruce Evans
2a2968a896 Removed a bogus comment. 1997-08-25 21:28:08 +00:00
Poul-Henning Kamp
c049f06469 Add a new vnode op (cachedlookup) so that filesystems can plug into
a global vfs_cache check.  The rest of this change will come when the
current zero size file problem is resolved.
1997-08-25 20:28:49 +00:00
Steve Passe
8ee0110a44 A clean fix for the spl "deadlock before smp_active" problem.
Added a new variable, 'bsp_apic_ready', which is set as soon as the bootstrap
CPU has initialized its local APIC.  Conditionalize the GENSPLR functions
to call ss_lock ONLY after bsp_apic_ready is TRUE;  This should prevent
any problems with races between the time the 1st AP becomes ready and the
time smp_active is set.
1997-08-24 20:33:32 +00:00
Peter Wemm
e384a9801e Print a warning if an unsupported (under SMP) shared address space fork
is attempted rather than just failing with an errno.
1997-08-22 15:10:00 +00:00
Poul-Henning Kamp
0e61ac7b5d typo in comment. 1997-08-22 07:16:46 +00:00
John Dyson
89721f6f1a This is a trial improvement for the vnode reference count while on the vnode
free list problem.  Also, the vnode age flag is no longer used by the
vnode pager.  (It is actually incorrect to use then.)  Constructive
feedback welcome -- just be kind.
1997-08-22 03:56:37 +00:00