Commit Graph

6290 Commits

Author SHA1 Message Date
Peter Wemm
cb1f265c60 AMD64 uses the new-style cpu_switch()/cpu_throw() calling conventions. 2003-04-30 21:45:03 +00:00
John Baldwin
a14e118939 Forgot to remove Giant around call to kern_sigaction() in
freebsd4_sigaction() in revision 1.232.
2003-04-30 19:45:13 +00:00
John Baldwin
428eb576a5 Axe a stale comment. 2003-04-30 19:41:04 +00:00
Mark Murray
51da11a27a Fix some easy, global, lint warnings. In most cases, this means
making some local variables static. In a couple of cases, this means
removing an unused variable.
2003-04-30 12:57:40 +00:00
David Xu
5c29a450ae Increase some default values. 2003-04-30 01:18:29 +00:00
Alexander Kabaev
104a9b7e3e Deprecate machine/limits.h in favor of new sys/limits.h.
Change all in-tree consumers to include <sys/limits.h>

Discussed on:	standards@
Partially submitted by: Craig Rodrigues <rodrigc@attbi.com>
2003-04-29 13:36:06 +00:00
Mike Barcroft
9ddb795450 style(9) 2003-04-28 18:32:19 +00:00
Alan Cox
01dfc1deae Finish the vm_object locking for this file, including holding the vm_object
lock when accessing the vm_object's flags or calling vm_page_lookup().
2003-04-28 05:40:45 +00:00
David Xu
5073e68fa3 unlock sched_lock at right time. 2003-04-27 04:32:40 +00:00
Alan Cox
ecde4b3218 Various changes to vm_object_page_remove():
- Eliminate an odd, special-case feature:
   if start == end == 0 then all pages are removed.  Only one caller
   used this feature and that caller can trivially pass the object's
   size.
 - Assert that the vm_object is locked on entry; don't bother testing
   for a NULL vm_object.
 - Style: Fix lines that are longer than 80 characters.
2003-04-26 23:41:30 +00:00
Alan Cox
c829b9d0fc - Lock the vm_object on entry to vm_object_terminate(). 2003-04-26 19:36:19 +00:00
Alan Cox
1ca5895341 - Convert vm_object_pip_wait() from using tsleep() to msleep().
- Make vm_object_pip_sleep() static.
 - Lock the vm_object when performing vm_object_pip_wait().
2003-04-26 18:33:18 +00:00
Alan Cox
af3e0bb202 - Lock the vm_object when performing vm_page_alloc() in allocbuf(). 2003-04-26 07:42:24 +00:00
Poul-Henning Kamp
3f6ee876c1 Update the "last malloc failure timestamp" also for simulated
malloc errors.
2003-04-25 21:49:24 +00:00
John Baldwin
a70a2b741b Remove Giant from getpgid() and getsid() and tweak the logic to more
closely match that of 4.x.
2003-04-25 20:09:31 +00:00
John Baldwin
17b8a8a77a Push down Giant around calls to proc_rwmem() in kern_ptrace. kern_ptrace()
should now be MP safe.
2003-04-25 20:02:16 +00:00
John Baldwin
25d6dc0606 Push Giant down into kern_sigaction() instead of locking it around calls
to kern_sigaction() in the various callers of the function.
2003-04-25 20:01:19 +00:00
John Baldwin
64cc6a13e7 - Push down Giant around vnode operations in ktrace().
- Mark the ktrace() and utrace() syscalls as being MP safe.
- Validate the facs argument to ktrace() prior to doing any vnode
  operations or acquiring any locks.
- Share lock the proctree lock over the entire section that calls
  ktrsetchildren() and ktrops().  We already did this for process groups.
  Doing it for the process case closes a small race where a process might
  go away after we look it up.  As a result of this, ktrstchildren() now
  just asserts that the proctree lock is locked rather than acquiring the
  lock itself.
- Add some missing comments to #else and #endif.
2003-04-25 19:59:35 +00:00
Daniel Eischen
1328e1c4be Add an argument to get_mcontext() which specified whether the
syscall return values should be cleared.  The system calls
getcontext() and swapcontext() want to return 0 on success
but these contexts can be switched to at a later time so
the return values need to be cleared in the saved register
sets.  Other callers of get_mcontext() would normally want
the context without clearing the return values.

Remove the i386-specific context saving from the KSE code.
get_mcontext() is not i386-specific any more.

Fix a bad pointer in the alpha get_mcontext() code.  The
context was being bcopy()'d from &td->tf_frame, but tf_frame
is itself a pointer, so the thread was being copied instead.
Spotted by jake.

Glanced at by:  jake
Reviewed by:    bde (months ago)
2003-04-25 01:50:30 +00:00
Tim J. Robbins
913fc94d2b Include altkstack pages in the RSS regardless of whether the process
is swapped out. Pointed out by jhb.
2003-04-25 00:20:40 +00:00
Dag-Erling Smørgrav
013466aa50 It seems that 1 was not a magic value as I thought, but a coincidence.
Instead of applying the adjustment to processes with a start time of 1,
apply it to all processes with a start time of less than 3600.

None of this would be necessary if the start times were recorded in ticks
instead of seconds and microseconds.
2003-04-24 12:12:06 +00:00
Tim J. Robbins
ceff7f2a48 Do a better job of calculating the RSS for swapped-out processes:
don't include the kernel stacks of swapped-out threads in the page count,
but do include the alternate kernel stack. jhb provided some helpful
comments on this.

PR:		49102
2003-04-24 11:03:04 +00:00
Tim J. Robbins
38dd7dee8a Free mount credentials (mnt_cred) when freeing the mount struct
in failure cases to avoid leaking struct ucreds, and ultimately
leaking struct uidinfo references.
2003-04-24 08:16:06 +00:00
Alan Cox
b6e48e0372 - Acquire the vm_object's lock when performing vm_object_page_clean().
- Add a parameter to vm_pageout_flush() that tells vm_pageout_flush()
   whether its caller has locked the vm_object.  (This is a temporary
   measure to bootstrap vm_object locking.)
2003-04-24 04:31:25 +00:00
Dag-Erling Smørgrav
1f7440d9f6 When filling out a kinfo_proc structure, if we come across a process
whose p_stats->p_start has the magic value 1, replace it with boottime.
Some users were apparently confused by the fact that ps(1) reported a
start time in early 1970 for system processes.
2003-04-24 03:37:59 +00:00
John Baldwin
cf60731b01 Remove Giant from osigblock(), osigsetmask(), and kern_sigaltstack(). 2003-04-23 19:49:18 +00:00
John Baldwin
5eac9e2dcb The signotify() sanity check in userret() doesn't need Giant anymore. 2003-04-23 18:51:55 +00:00
John Baldwin
2056d0a168 Add lock assertions for various proc/thread/kse/ksegroup fields to the
scheduler functions.
2003-04-23 18:51:05 +00:00
John Baldwin
5afe0c9947 - Reorganize osigstack() to do the copyin first, grab the proc lock once,
do all the various sigstack dances, unlock the proc lock, and finally do
  the copyout.  This more closely resembles the behavior of
  kern_sigaltstack() and closes a small race.
- Remove Giant from osigstack as it is no longer needed.
2003-04-23 18:50:25 +00:00
John Baldwin
4d923fe3f5 Remove Giant from [gs]etpriority(). 2003-04-23 18:48:55 +00:00
John Baldwin
112afcb232 - Protect p_numthreads with the sched_lock.
- Protect p_singlethread with both the sched_lock and the proc lock.
- Protect p_suspcount with the proc lock.
2003-04-23 18:46:51 +00:00
David E. O'Brien
2603007ace Add /dev to the Alpha manual mount root example. 2003-04-23 05:02:40 +00:00
John Baldwin
9752f794c7 - Move PS_PROFIL and its new cousin PS_STOPPROF back over to p_flag and
rename them appropriately.  Protect both flags with both the proc lock
  and the sched_lock.
- Protect p_profthreads with the proc lock.
- Remove Giant from profil(2).
2003-04-22 20:54:04 +00:00
John Baldwin
0b5318c81a - Assert that the proc lock and sched_lock are held in sched_nice().
- For the 4BSD scheduler, this means that all callers of the static
  function resetpriority() now always hold sched_lock, so don't lock
  sched_lock explicitly in that function.
2003-04-22 20:50:38 +00:00
John Baldwin
a15cc35909 Lock both the proc lock and sched_lock when calling sched_nice since
kg_nice is now protected by both.  Being protected by both means that
other places in the kernel that want to read kg_nice only need one of the
two locks.
2003-04-22 20:45:38 +00:00
John Baldwin
eeec6bab2e Prefer the proc lock to sched_lock when testing PS_INMEM now that it is
safe to do so.
2003-04-22 20:01:56 +00:00
John Baldwin
828e7683bf Protect p_swtime with the sched_lock. 2003-04-22 19:48:25 +00:00
John Baldwin
a6f37ac9d6 - Mark the kse_purge_group() and kse_purge() definitions static to match
their prototypes.
- Remove sched_lock locking from kse_purge() as all callers already lock
  the sched_lock before calling it.
- Hold the proc lock slightly longer to protect P_SHOULDSTOP().
2003-04-22 19:47:55 +00:00
Warner Losh
01a9b4348f Create a new function, device_is_attached(), that is like
device_is_alive() that tells us if the device has successfully
attached.  device_is_alive just tells us that the device has
successfully probed.
2003-04-21 18:19:08 +00:00
David Xu
11b20c685b Fix lock order reversal problem. 2003-04-21 14:42:04 +00:00
David Xu
1ecb38a365 Introduce two flags to control upcall behaviour:
o KMF_NOUPCALL
	Ask kse_release to not return to userland upcall entry, but instead
	direct returns to userland by using current thread's stack and return
	address on stack. This flags is intended to be used by UTS in critical
	region to wait another UTS thread to leave critical region, by using
	kse_release with this flag to avoid spinnng and burning CPU. Also this
	flags can be used by UTS to poll completed context when there is nothing
	to do in userland and needn't restart from its entry like normal upcall.

o KMF_NOCOMPLETED
	Ask kernel to not bring completed thread contexts back to userland when
	doing upcall, this flags is intend to be used with above flag when an
	upcall thread is in critical region and can not process completed contexts
	at that time.

Tested by: deischen
2003-04-21 07:27:59 +00:00
Warner Losh
e22b0bf4b8 Fix /dev/devctl's implementation of poll. We should only be setting
the poll bits when there's actually something in the queue.
Otherwise, select always returned '2' when there were no items to be
read, and '3' when there were.  This would preclude being able to read
in a threaded (libc_r) program, as well as checking to see if there
were pending events or not.
2003-04-21 05:58:51 +00:00
Alan Cox
2b7e071e89 - Lock the vm_object when performing vm_object_pip_add(). 2003-04-20 07:29:50 +00:00
Alan Cox
097d4338db Lock the vm_object in vfs_busy_pages(). 2003-04-20 00:17:05 +00:00
Alan Cox
0fa05eae77 - Lock the vm_object when performing vm_object_pip_subtract().
- Assert that the vm_object lock is held in vm_object_pip_subtract().
2003-04-19 22:11:41 +00:00
Alan Cox
0d420ad3e6 - Lock the vm_object when performing vm_object_pip_wakeupn().
- Assert that the vm_object lock is held in vm_object_pip_wakeupn().
 - Add a new macro VM_OBJECT_LOCK_ASSERT().
2003-04-19 21:15:44 +00:00
Alan Cox
ea08145b76 Lock the jumbo_vm_object when performing vm_page_alloc(). 2003-04-19 19:13:25 +00:00
David Xu
95bee4c365 Test next upcall time correctly. 2003-04-19 06:16:04 +00:00
David Xu
06ce69a720 Unbreak sigaltstack syscall. sigonstack is now a function and
want proc lock be held.
2003-04-19 05:04:06 +00:00
David Xu
588257e810 Use correct thread pointer. 2003-04-19 04:39:10 +00:00