Commit Graph

209 Commits

Author SHA1 Message Date
jdolecek e0cc03a09b merge kqueue branch into -current
kqueue provides a stateful and efficient event notification framework
currently supported events include socket, file, directory, fifo,
pipe, tty and device changes, and monitoring of processes and signals

kqueue is supported by all writable filesystems in NetBSD tree
(with exception of Coda) and all device drivers supporting poll(2)

based on work done by Jonathan Lemon for FreeBSD
initial NetBSD port done by Luke Mewburn and Jason Thorpe
2002-10-23 09:10:23 +00:00
thorpej 2b99f7cc34 Add a generic config finalization hook, to be called once all real
devices have been discovered.  All finalizer routines are iteratively
invoked until all of them report that they have done no work.

Use this hook to fix a latent bug in RAIDframe autoconfiguration of
RAID sets exposed by the rework of SCSI device discovery.
2002-10-01 18:11:57 +00:00
thorpej 71404bb533 Don't include <sys/map.h>. 2002-09-25 22:21:01 +00:00
matt 48bbf5f234 Use the queue macros from <sys/queue.h> instead of referring to the queue
members directly.  Use *_FOREACH whenever possible.
2002-09-04 01:32:31 +00:00
sommerfeld 782a77d899 Initialize proc0.p_raslock to avoid a lock assertion on the first fork(). 2002-08-31 20:02:09 +00:00
thorpej d4a2567abe Fix a signed/unsigned comparison warning from GCC 3.3. 2002-08-25 19:13:08 +00:00
lukem 141ac20efe only print "init: trying /some/init" if RB_ASKNAME or if it's not the first
path we're trying.  (the intent but not the behaviour of the previous rev.)
2002-08-24 00:47:17 +00:00
lukem 76f5313c64 in start_init(), if RB_ASKNAME is set in boothowto, ask for the path
name to start up as init (rather than just cycling thru initpaths[]
and panicing when out of options).  if RB_ASKNAME isn't set, the old
behaviour remains.  inspired by changes in der Mouse's patchtree.
resolves [kern/18027] from me.
2002-08-23 06:17:08 +00:00
christos acf2d4083d Niels Provos systrace work, ported to NetBSD by kittenz and reworked... 2002-06-17 16:22:50 +00:00
itojun ae5a9e211d re-scan all ifnet after domaininit() for if_afdata initialization. 2002-05-27 13:46:45 +00:00
simonb 8ecad242b9 Use <sys/disk.h> for the prototype of disk_init() rather than declaring
our own locally.
2002-03-04 02:30:27 +00:00
jdolecek 5798a9a710 Switch default for pipes to the faster John S. Dyson's implementation.
Old, socketpair-based ones are available with option PIPE_SOCKETPAIR.
2002-02-11 18:11:41 +00:00
perry dc0e791802 Happy New Year! 2002-01-01 09:17:28 +00:00
lukem adc783d537 add RCSIDs 2001-11-12 15:25:01 +00:00
chs e9fbc91f95 user maps are always pageable. 2001-08-16 01:37:50 +00:00
matt 7fa8aeac6c When we auto size the vnode cache, make sure we do it *before* we
init vfs so it can the size into account when creating its hash lists.
This means that for a 2GB system, it'll have a default of 65536 buckets
instead of 2048 and when you have 200,000+ vnodes that makes a significant
difference.
2001-07-18 00:51:54 +00:00
jdolecek 55aebfe98e Remove initial newline from copyright[], which was mistakely added in rev.1.191.
Fixes kern/13470 by Tetsuya Isaki.
2001-07-15 14:36:06 +00:00
jdolecek ee882e3a09 Add port of high performance pipe implementation written by John S. Dyson
for FreeBSD project. Besides huge speed boost compared with socketpair-based
pipes, this implementation also uses pagable kernel memory instead of mbufs.

Significant differences to FreeBSD version:
* uses uvm_loan() facility for direct write
* async/SIGIO handling correct also for sync writer, async reader
* limits settable via sysctl, amountpipekva and nbigpipes available via sysctl
* pipes are unidirectional - this is enforced on file descriptor level
	for now only, the code would be updated to take advantage of it
	eventually
* uses lockmgr(9)-based locks instead of home brew variant
* scatter-gather write is handled correctly for direct write case, data
  is transferred by PIPE_DIRECT_CHUNK bytes maximum, to avoid running out of kva

All FreeBSD/NetBSD specific code is within appropriate #ifdef, in preparation
to feed changes back to FreeBSD tree.

This pipe implementation is optional for now, add 'options NEW_PIPE'
to your kernel config to use it.
2001-06-16 12:00:02 +00:00
mrg 7a84fc0483 use real \n's copyright[]; avoids gcc 3.0-prerelease warnings. 2001-06-08 12:53:30 +00:00
thorpej bf2dcec4f5 Remove the use of splimp() from the NetBSD kernel. splnet()
and only splnet() is allowed for the protection of data structures
used by network devices.
2001-04-13 23:29:55 +00:00
chs ac3bc537bd eliminate the KERN_* error codes in favor of the traditional E* codes.
the mapping is:

KERN_SUCCESS			0
KERN_INVALID_ADDRESS		EFAULT
KERN_PROTECTION_FAILURE		EACCES
KERN_NO_SPACE			ENOMEM
KERN_INVALID_ARGUMENT		EINVAL
KERN_FAILURE			various, mostly turn into KASSERTs
KERN_RESOURCE_SHORTAGE		ENOMEM
KERN_NOT_RECEIVER		<unused>
KERN_NO_ACCESS			<unused>
KERN_PAGES_LOCKED		<unused>
2001-03-15 06:10:32 +00:00
thorpej eb80878b1b Happy new year! 2001-01-01 20:18:34 +00:00
mycroft f495cd9dc6 Introduce 2 new flags in types.h:
* __HAVE_SYSCALL_INTERN.  If this is defined, e_syscall is replaced by
  e_syscall_intern, which is called at key places in the kernel.  This can be
  used to set a MD syscall handler pointer.  This obsoletes and replaces the
  *_HAS_SEPARATED_SYSCALL flags.
* __HAVE_MINIMAL_EMUL.  If this is defined, certain (deprecated) elements in
  struct emul are omitted.
2000-12-11 05:28:59 +00:00
jdolecek a65f2129f3 call exec_init() with before letting init(8) exec 2000-12-08 22:07:36 +00:00
chs aeda8d3b77 Initial integration of the Unified Buffer Cache project. 2000-11-27 08:39:39 +00:00
jdolecek baae0324b9 restructure struct emul and execsw, in preparation to make emulations LKMable:
* move all exec-type specific information from struct emul to execsw[] and
  provide single struct emul per emulation
* elf:
  - kern/exec_elf32.c:probe_funcs[] is gone, execsw[] how has one entry
    per emulation and contains pointer to respective probe function
  - interp is allocated via MALLOC() rather than on stack
  - elf_args structure is allocated via MALLOC() rather than malloc()
* ecoff: the per-emulation hooks moved from alpha and mips specific code
  to OSF1 and Ultrix compat code as appropriate, execsw[] has one entry per
  emulation supporting ecoff with appropriate probe function
* the makecmds/probe functions don't set emulation, pointer to emulation is
  part of appropriate execsw[] entry
* constify couple of structures
2000-11-21 00:37:49 +00:00
jdolecek 78b866e95a change the type of *syscallnames[] array to 'const char * const foo[]' 2000-11-13 21:32:15 +00:00
he a08889417a Use an rlim_t to store "available memory", so we don't needlessly
overflow and/or sign extend.
2000-10-29 18:38:47 +00:00
thorpej 72a24b4eae Add an align argument to uvm_map() and some callers of that
routine.  Works similarly fto pmap_prefer(), but allows callers
to specify a minimum power-of-two alignment of the region.
How we ever got along without this for so long is beyond me.
2000-09-13 15:00:15 +00:00
sommerfeld ec08310fab More MP clock/scheduler changes:
- Periodically invoke roundrobin() from hardclock() on all cpu's rather
than from a timer callout; this allows time-slicing on non-primary cpu's.
 - Make pscnt per-cpu.
 - Notice psdiv changes on each cpu, and adjust pscnt at that point.
Also, invoke setstatclockrate() from the clock interrupt when each cpu
notices the divisor change, rather than when starting/stopping the
profiling clock.
2000-08-26 03:34:36 +00:00
thorpej f759220f40 Define the MI parts of the "big kernel lock" perimeter. From
Bill Sommerfeld.
2000-08-22 17:28:28 +00:00
thorpej f42254818f splhigh() -> splsched() 2000-08-21 02:09:33 +00:00
thorpej a91e7a7c6d Don't bother with a trampoline to start the pagedaemon and
reaper threads.
2000-08-12 22:41:53 +00:00
thorpej 195bf5c09f - Fix the likely cause of the "ps(1) hangs machine" problem. Always
vslock the user pages for the data being copied out to userspace,
  so that we won't sleep while holding a lock in case we need to
  fault the pages in.
- Sprinkle some const and ANSI'ify some things while here.
2000-07-14 07:21:21 +00:00
jdolecek 53385f1dfd adjust maximum number of vnodes in vnode cache according
to machine memory size upon boot if the number has not been specified
explicitly in kernel config - at this moment, 0.5% of system
memory is used for vnodes (but minimum NVNODE vnodes)
2000-07-06 09:51:54 +00:00
mrg 32aa199ccf remove include of <vm/vm.h> 2000-06-27 17:41:07 +00:00
mrg 53be5b215c <vm/vm_pageout.h> is already empty; kill it totally. 2000-06-25 13:49:33 +00:00
soren 14573dc679 defopt SYSCALL_DEBUG. 2000-06-06 18:26:32 +00:00
thorpej 956b3ca3b3 Track which process a CPU is running/has last run on by adding a
p_cpu member to struct proc.  Use this in certain places when
accessing scheduler state, etc.  For the single-processor case,
just initialize p_cpu in fork1() to avoid having to set it in the
low-level context switch code on platforms which will never have
multiprocessing.

While I'm here, comment a few places where there are known issues
for the SMP implementation.
2000-05-31 05:02:31 +00:00
jhawk b4c87e6d41 Add proc0 to pidhashtbl so pfind(0) works.
Now trace/t 0 works in ddb, etc.
2000-05-28 18:52:32 +00:00
thorpej e03e9e8086 Rather than starting init and creating kthreads by forking and then
doing a cpu_set_kpc(), just pass the entry point and argument all
the way down the fork path starting with fork1().  In order to
avoid special-casing the normal fork in every cpu_fork(), MI code
passes down child_return() and the child process pointer explicitly.

This fixes a race condition on multiprocessor systems; a CPU could
grab the newly created processes (which has been placed on a run queue)
before cpu_set_kpc() would be performed.
2000-05-28 05:48:59 +00:00
thorpej a7d0570e67 First sweep at scheduler state cleanup. Collect MI scheduler
state into global and per-CPU scheduler state:

	- Global state: sched_qs (run queues), sched_whichqs (bitmap
	  of non-empty run queues), sched_slpque (sleep queues).
	  NOTE: These may collectively move into a struct schedstate
	  at some point in the future.

	- Per-CPU state, struct schedstate_percpu: spc_runtime
	  (time process on this CPU started running), spc_flags
	  (replaces struct proc's p_schedflags), and
	  spc_curpriority (usrpri of processes on this CPU).

	- Every platform must now supply a struct cpu_info and
	  a curcpu() macro.  Simplify existing cpu_info declarations
	  where appropriate.

	- All references to per-CPU scheduler state now made through
	  curcpu().  NOTE: this will likely be adjusted in the future
	  after further changes to struct proc are made.

Tested on i386 and Alpha.  Changes are mostly mechanical, but apologies
in advance if it doesn't compile on a particular platform.
2000-05-26 21:19:19 +00:00
thorpej 8964c35eca Introduce a new process state distinct from SRUN called SONPROC
which indicates that the process is actually running on a
processor.  Test against SONPROC as appropriate rather than
combinations of SRUN and curproc.  Update all context switch code
to properly set SONPROC when the process becomes the current
process on the CPU.
2000-05-26 00:36:42 +00:00
enami f9c7a69ff5 Call the routine to calculate callwheelsize from allocsys() instead of
main() since some port like alpha and mips calls allocsys() before main()
is called.  While I'm here, I renamed some function.
2000-03-24 11:57:14 +00:00
thorpej b667a5a357 New callout mechanism with two major improvements over the old
timeout()/untimeout() API:
- Clients supply callout handle storage, thus eliminating problems of
  resource allocation.
- Insertion and removal of callouts is constant time, important as
  this facility is used quite a lot in the kernel.

The old timeout()/untimeout() API has been removed from the kernel.
2000-03-23 06:30:07 +00:00
enami 01a5f6c995 Create new kernel thread to issue statfs(2) system call to check free
disk space rather than doing it in timeout handler.  This fixes long
standing bug that accounting file can't be put on NFS file system (so,
e.g, we couldn't turn on accounting on diskless system).
2000-03-10 01:13:18 +00:00
thorpej 5aa64075cc Add a `config_pending' semaphore to block mounting of the root file system
until all device driver discovery threads have had a chance to do their
work.  This in turn blocks initproc's exec of init(8) until root is
mounted and process start times and CWD info has been fixed up.

Addresses kern/9247.
2000-01-24 18:03:19 +00:00
thorpej a0397a2573 Move callout initialization to a single location; no need to duplicate
that code all over the place.
2000-01-19 20:05:30 +00:00
mycroft 40d251bc94 Update for y2k. 2000-01-01 05:00:03 +00:00
thorpej 51fcba3845 Explicitly set secondary processors in motion before calling uvm_scheduler(). 1999-12-16 19:59:17 +00:00