Commit Graph

334 Commits

Author SHA1 Message Date
Jonathan Lemon
2459336973 Allow debugging output to be controlled on a per-syscall granularity.
Also clean up debugging output in a slightly more uniform fashion.

The default behavior remains the same (all debugging output is turned on)
2001-02-16 16:40:43 +00:00
Jonathan Lemon
705deb78a3 Add mount syscall to linux emulation. Also improve emulation of reboot. 2001-02-16 14:42:11 +00:00
Bosko Milekic
9ed346bab0 Change and clean the mutex lock interface.
mtx_enter(lock, type) becomes:

mtx_lock(lock) for sleep locks (MTX_DEF-initialized locks)
mtx_lock_spin(lock) for spin locks (MTX_SPIN-initialized)

similarily, for releasing a lock, we now have:

mtx_unlock(lock) for MTX_DEF and mtx_unlock_spin(lock) for MTX_SPIN.
We change the caller interface for the two different types of locks
because the semantics are entirely different for each case, and this
makes it explicitly clear and, at the same time, it rids us of the
extra `type' argument.

The enter->lock and exit->unlock change has been made with the idea
that we're "locking data" and not "entering locked code" in mind.

Further, remove all additional "flags" previously passed to the
lock acquire/release routines with the exception of two:

MTX_QUIET and MTX_NOSWITCH

The functionality of these flags is preserved and they can be passed
to the lock/unlock routines by calling the corresponding wrappers:

mtx_{lock, unlock}_flags(lock, flag(s)) and
mtx_{lock, unlock}_spin_flags(lock, flag(s)) for MTX_DEF and MTX_SPIN
locks, respectively.

Re-inline some lock acq/rel code; in the sleep lock case, we only
inline the _obtain_lock()s in order to ensure that the inlined code
fits into a cache line. In the spin lock case, we inline recursion and
actually only perform a function call if we need to spin. This change
has been made with the idea that we generally tend to avoid spin locks
and that also the spin locks that we do have and are heavily used
(i.e. sched_lock) do recurse, and therefore in an effort to reduce
function call overhead for some architectures (such as alpha), we
inline recursion for this case.

Create a new malloc type for the witness code and retire from using
the M_DEV type. The new type is called M_WITNESS and is only declared
if WITNESS is enabled.

Begin cleaning up some machdep/mutex.h code - specifically updated the
"optimized" inlined code in alpha/mutex.h and wrote MTX_LOCK_SPIN
and MTX_UNLOCK_SPIN asm macros for the i386/mutex.h as we presently
need those.

Finally, caught up to the interface changes in all sys code.

Contributors: jake, jhb, jasone (in no particular order)
2001-02-09 06:11:45 +00:00
Jeroen Ruigrok van der Werven
1a6e52d0e9 Fix typo: seperate -> separate.
Seperate does not exist in the english language.
2001-02-06 11:21:58 +00:00
Jeroen Ruigrok van der Werven
f09deb6962 Fix typo: wierd -> weird.
There is no such thing as wierd in the english language.
2001-02-06 09:25:10 +00:00
John Baldwin
ba88dfc733 Back out proc locking to protect p_ucred for obtaining additional
references along with the actual obtaining of additional references.
2001-01-27 00:01:31 +00:00
John Baldwin
f0ae4fa2db - Back out over-aggressive locking of p->p_cred.
- Back out locking ucred's and bumping refcounts for vnode operations.
2001-01-26 23:54:40 +00:00
John Baldwin
401cee34d4 Use queue macros. 2001-01-24 00:01:42 +00:00
John Baldwin
ec447af191 - Proc locking.
- Use queue macros.
- Use NULL instead of 0 for pointers.

Reviewed by:	des
2001-01-23 22:13:07 +00:00
John Baldwin
97eba215ac Argh, atomic_store_rel -> atomic_store_rel_int. 2001-01-23 21:40:07 +00:00
John Baldwin
505eb4d591 Woops, add in missing headers. 2001-01-23 21:39:15 +00:00
John Baldwin
1fed5f0326 Proc locking. 2001-01-23 21:33:55 +00:00
John Baldwin
c41e968cbd Use queue macros. 2001-01-23 21:32:02 +00:00
John Baldwin
bc4afa1f45 - Add proc locking.
- Fix several bugs in the wait syscall, including freeing the actual
  proc start, freeing the args, freeing the prison, and other minor
  nits.
- Use appropriate queue(3) macros.
- Use zpfind() instead of walking zombproc ourselves.
2001-01-23 21:30:25 +00:00
John Baldwin
48f8ca448a - Use proper atomic operations to make the run time initialization
controlled by svr_str_initialized be MP safe.
2001-01-23 21:07:16 +00:00
John Baldwin
37bf0fc1f8 FreeBSD doesn't have p_emuldata, and our stackgap_init() doesn't take an
argument.
2001-01-23 21:02:44 +00:00
John Baldwin
07a1f31cd0 Use proc lock to safely obtain references to p_ucred before vnode
operations.
2001-01-23 20:52:50 +00:00
John Baldwin
fb29c3e083 Protect calcru() with sched_lock. 2001-01-23 20:50:40 +00:00
Takanori Watanabe
fd8433ab80 Map BSS section in PECOFF executable.
Submitted by:	 KUROSAWA Takahiro <fwkg7679@mb.infoweb.ne.jp>
2001-01-23 16:19:37 +00:00
Garrett Wollman
074a4a2c84 Finish deprecating <sys/select.h> in favor of <sys/selinfo.h> in kernel code. 2001-01-20 02:24:07 +00:00
Josef Karthauser
4c3a3ec075 Instead of hard coding the major numbers for IDE and SCSI disks
look in the device's cdevsw for the D_DISK flag.
2001-01-14 23:33:50 +00:00
Jake Burkholder
549f00c753 Protect proc.p_pptr with the proctree lock. 2001-01-10 15:41:26 +00:00
Brian Feldman
3a83f9ac64 Take 10 seconds to actually fix the chgproccnt rather than just make it
explicitly error.  If the module is horribly broken, it should be
temporarily removed from src/sys/modules.
2001-01-09 04:55:37 +00:00
Garrett Wollman
5ae1c3979c With some trepidation, add a `#error' directive to this module. It was
broken and not fixed by whoever changed the interface of chgproccnt();
in the state it is in it could not possibly work (dereferencing an integer).
2001-01-09 04:27:09 +00:00
Paul Richards
7842f151ba Map FreeBSD character device hard disks to Linux block device hard disks.
This fixes the problem with VMWARE not being able to use raw disks.
2000-12-29 00:44:42 +00:00
Jake Burkholder
98f03f9030 Protect proc.p_pptr and proc.p_children/p_sibling with the
proctree_lock.

linprocfs not locked pending response from informal maintainer.

Reviewed by:	jhb, -smp@
2000-12-23 19:43:10 +00:00
Takanori Watanabe
bffb191efe Add PECOFF (WIN32 Execution file format) support.
To use it, some dll is needed. And currently, the dll is only for NetBSD.
So one more kernel module is needed.
For more infomation,
http://chiharu.haun.org/peace/ .

Reviewed by:	bp
2000-12-20 12:51:08 +00:00
Assar Westerlund
40dbba5754 translate the flags in recvfrom and recvmsg from linux to bsd ones
Approved by:	marcel
2000-12-19 00:24:25 +00:00
John Baldwin
216af8221e Lock access to proc members.
Glanced over by:	marcel
2000-12-15 19:41:27 +00:00
Dag-Erling Smørgrav
6e66bfacfa Use kinfo_proc instead of eproc (which Kirk deep-sixed earlier this week)
Generate a version string that looks just like a real Linux one - almost :)

Use sbufs everywhere instead of sprintf(). Note that this is still imperfect,
as the code does not check whether the sbuf overflowed - but it'll still
work better than before, since if the sbuf overflows, the code now simply
copies out 0 bytes instead of causing a trap (or worse, corrupting kernel
structures)
2000-12-13 20:22:24 +00:00
Dag-Erling Smørgrav
315ab977dc Add dependency on linux, which is needed for proc/version. 2000-12-13 20:19:06 +00:00
Jake Burkholder
1756a185cf Lock the allproc list.
Approved by:	DES
2000-12-13 09:05:45 +00:00
Jake Burkholder
c0c2557090 - Change the allproc_lock to use a macro, ALLPROC_LOCK(how), instead
of explicit calls to lockmgr.  Also provides macros for the flags
  pased to specify shared, exclusive or release which map to the
  lockmgr flags.  This is so that the use of lockmgr can be easily
  replaced with optimized reader-writer locks.
- Add some locking that I missed the first time.
2000-12-13 00:17:05 +00:00
Dag-Erling Smørgrav
96e37d17e6 Point #includes at compat/linprocfs instead of i386/linux/linprocfs. 2000-12-12 22:06:05 +00:00
Dag-Erling Smørgrav
b51a26edb2 Add proc/<pid>/cmdline. 2000-12-09 16:20:48 +00:00
Dag-Erling Smørgrav
8b5a844af9 Add a dependency on procfs. 2000-12-09 16:20:35 +00:00
Dag-Erling Smørgrav
f786d43aac A bunch of fixes that have been rotting in my tree for a month or two
waiting for procfs to get fixed:

  - Use fill_eproc() to obtain correct VM stats. Attempt to compute VmLib.

  - Fill some more fields in proc/<pid>/stat, and add four (unimplemented)
    fields after studying a recent Linux kernel.

  - Compute CPU frequency only once instead of twice.

  - Fix some comments that were OBE.

  - Fix indentation except where it makes the code less readable.
2000-12-09 13:25:54 +00:00
Marcel Moolenaar
7ec9743293 Remove call to bzero after MALLOC and instead add M_ZERO
to MALLOC.
2000-12-05 06:44:22 +00:00
Marcel Moolenaar
4c9671ee0f Include machine/cpu.h for cpu_getstack().
Spotted by: jake
2000-12-03 01:56:15 +00:00
Marcel Moolenaar
b4c6727a3a Don't auto-generate the syscalls. 2000-12-03 01:30:31 +00:00
John Baldwin
0de7d1da20 Protect access to p_stat with sched_lock. 2000-12-01 06:34:19 +00:00
Marcel Moolenaar
d034d459da Don't use p->p_sigstk.ss_flags to keep state of whether the
process is on the alternate stack or not. For compatibility
with sigstack(2) state is being updated if such is needed.

We now determine whether the process is on the alternate
stack by looking at its stack pointer. This allows a process
to siglongjmp from a signal handler on the alternate stack
to the place of the sigsetjmp on the normal stack. When
maintaining state, this would have invalidated the state
information and causing a subsequent signal to be delivered
on the normal stack instead of the alternate stack.

PR: 22286
2000-11-30 05:23:49 +00:00
Jake Burkholder
4f55983606 Use callout_reset instead of timeout(9). Most callouts are statically
allocated, 2 have been added to struct proc for setitimer and sleep.

Reviewed by:	jhb, jlemon
2000-11-27 22:52:31 +00:00
Dag-Erling Smørgrav
fbbd9aebdd Add bogomips to cpuinfo (set it equal to the CPU frequency, which is bogus
but not more so than Linux' definition).
This should get the IBM JDK 1.3 working again.

Prompted by:	sobomax
2000-11-27 11:10:03 +00:00
Matthew Dillon
e0be78f6dc Forgot to patch this file in file descriptor race fix commit
Submitted-by: "Danny J. Zerkel" <dzerkel@columbus.rr.com>
2000-11-23 11:05:14 +00:00
Andrew Gallatin
930a65fe47 Use the linux_connect() on alpha rather than passing directly through
to our native connect().  This is required to deal with the differences
in the way linux handles connects on non-blocking sockets.

This gets the private beta of the Compaq Linux/alpha JDK working
on FreeBSD/alpha

Approved by: marcel
2000-11-16 01:05:53 +00:00
Marcel Moolenaar
7cf6a3b430 Fix F_SETOWN on pipes. Linux returns EINVAL while we send a SIGIO
signal. There's at least 1 program that is known to break.
Submitted patch has been edited to match current code.

MFC: yes
Submitted by: bde
2000-11-13 04:08:56 +00:00
Marcel Moolenaar
ebea866055 Revert auto-generation. The Alpha port is broken.
Syncing with it is wrong.
2000-11-10 21:30:19 +00:00
Marcel Moolenaar
806d7daafe Make MINSIGSTKSZ machine dependent, and have the sigaltstack
syscall compare against a variable sv_minsigstksz in struct
sysentvec as to properly take the size of the machine- and
ABI dependent struct sigframe into account.

The SVR4 and iBCS2 modules continue to have a minsigstksz of
8192 to preserve behavior. The real values (if different) are
not known at this time. Other ABI modules use the real
values.

The native MINSIGSTKSZ is now defined as follows:

Arch		MINSIGSTKSZ
----		-----------
alpha		    4096
i386		    2048
ia64		   12288

Reviewed by: mjacob
Suggested by: bde
2000-11-09 08:25:48 +00:00
Marcel Moolenaar
2da829a0c8 Sync with Alpha:
Do not use sysent.c, proto.h and syscall.h in source tree;
use auto-generated versions.
2000-11-09 07:27:55 +00:00