Commit Graph

7705 Commits

Author SHA1 Message Date
Julian Elischer
a9b5dc7d6d Always strt out with an initilalised ksegrp structure.
MFC after:	3 days
2004-10-03 20:06:11 +00:00
David Xu
482d099c50 Don't bother to turn off other P_STOPPED bits for SIGKILL, doing
so would cause kernel to produce an unkillable process in some cases,
especially, P_STOPPED_SINGLE has a singling thread, turning off the
bit would mess the state.
2004-10-03 13:23:49 +00:00
Alan Cox
86dac448f2 Add a SOCKBUF_LOCK() to a rarely executed path in do_sendfile(). 2004-10-02 05:37:47 +00:00
Alfred Perlstein
50434413b0 Clear a process's procfs trace points upon delivery of SIGKILL.
MT5 candidate. (Desired features for 5.3-RELEASE "More truss problems")
2004-10-01 14:15:20 +00:00
Poul-Henning Kamp
ba2851254f Fix a LOR relating to freeing cdevs. 2004-10-01 06:33:39 +00:00
Alfred Perlstein
576c004fb9 cover soreadable and sowriteable with the corresponding socketbuffer locks. 2004-10-01 05:54:06 +00:00
David Schultz
299bc7367d Avoid calling _PHOLD(p1) with p2's lock held, since _PHOLD()
may block to swap in p1.  Instead, call _PHOLD earlier, at a
point where the only lock held happens to be p1's.
2004-10-01 05:01:29 +00:00
John Baldwin
4a2aa5d054 Fix a typo to fix the !DIAGNOSTIC build.
Submitted by:	many
2004-09-30 18:13:18 +00:00
Poul-Henning Kamp
0cd3cb9a15 Assign a global unit number for the tty slave devices (init/lock) using
the new subr_unit.c code.

For now assert Giant in ttycreate() and ttyfree().  It is not obvious that
it will ever pay off to lock these with anything else.
2004-09-30 10:38:48 +00:00
Poul-Henning Kamp
f6bde1fd05 Add a new API for allocating unit number (-like) resources.
Allocation is always lowest free unit number.

A mixed range/bitmap strategy for maximum memory efficiency.  In
the typical case where no unit numbers are freed total memory usage
is 56 bytes on i386.

malloc is called M_WAITOK but no locking is provided (yet).  A bit of
experience will be necessary to determine the best strategy.  Hopefully
a "caller provides locking" strategy can be maintained, but that may
require use of M_NOWAIT allocation and failure handling.

A userland test driver is included.
2004-09-30 07:04:03 +00:00
Brian Feldman
1abf2c3678 Account for alias devices when tearing them down in destroy_dev() so we
don't panic on a NULL cdev->si_devsw.
2004-09-29 16:38:38 +00:00
Dag-Erling Smørgrav
479439b4fe Turn VM_KMEM_SIZE_MAX and VM_KMEM_SIZE_SCALE into tunables.
MFC after:	3 days
2004-09-29 14:21:40 +00:00
Poul-Henning Kamp
cf287576e5 Add functions to create and free the "tty-ness" of a serial port in a
generic way.  This code will allow a similar amount of code to be
removed from most if not all serial port drivers.

	Add generic cdevsw for tty devices.

	Add generic slave cdevsw for init/lock devices.

	Add ttypurge function which wakes up all know generic sleep
	points in the tty code, and calls into the hw-driver if it
	provides a method.

	Add ttycreate function which creates tty device and optionally
	cua device.  In both cases .init/.lock devices are created
	as well.

	Change ttygone() slightly to also call the hw driver provided
	purge routine.

	Add ttyfree() which will purge and destroy the cdevs.

	Add ttyconsole mode for setting console friendly termios
	on a port.
2004-09-28 19:33:49 +00:00
John-Mark Gurney
7b12509082 improve the mbuf m_print function.. Only pull length from pkthdr if there
is one, detect mbuf loops and stop, add an extra arg so you can only print
the first x bytes of the data per mbuf (print all if arg is -1), print
flags using %b (bitmask)...

No code in the tree appears to use m_print, and it's just a maner of adding
-1 as an additional arg to m_print to restore original behavior..

MFC after:	4 days
2004-09-28 18:40:18 +00:00
Poul-Henning Kamp
961da2716b Give cluster_write() an explicit vnode argument.
In the future a struct buf will not automatically point out a vnode for us.
2004-09-27 19:14:10 +00:00
Poul-Henning Kamp
a5993c332a Used cached cdevsw pointer. 2004-09-27 06:34:30 +00:00
Poul-Henning Kamp
743cd76a73 Add cdevsw->d_purge() support.
This device method shall wake up any threads sleeping in the device driver
and make the depart the drivers code for good.
2004-09-27 06:18:25 +00:00
Marcel Moolenaar
e6aa723212 Fix a bug introduced in the previous commit: kdb_cpu_trap() gets to
the trapframe via kdb_frame, but kdb_frame was not initialized until
after the call to kdb_cpu_trap(). Ergo: kdb_cpu_trap() was moved too
far up.

Pointy hat: marcel
2004-09-26 06:48:59 +00:00
Julian Elischer
2179a22cc7 Use the universal 'threaded process' flag rather than the
specific tests for different threading systems.

MFC after:	1 week
2004-09-25 00:53:46 +00:00
John Baldwin
a9a64385e7 Some more whitespace, style, and comment fixes.
Submitted by:	bde (mostly)
2004-09-24 20:27:04 +00:00
Pawel Jakub Dawidek
d0257d9c10 Rename 'mount_root_delay' tunable to 'vfs.root.mountdelay', which fits
a bit better to our current naming scheme.

Discussed with:	ru
2004-09-24 09:19:03 +00:00
Poul-Henning Kamp
b2deb1d205 Remove the cdevsw() function which is now unused. 2004-09-24 08:30:57 +00:00
Poul-Henning Kamp
6f077de596 Hold threadcount while throbbing cdevsw in our underlying driver.
This is a bit heavyhanded, and will be simplified once the tty code
learns to properly deal with disappearing hw and drivers.
2004-09-24 08:26:03 +00:00
Poul-Henning Kamp
8f7bea8b99 Hold threadcount reference when we call into the underlying console
driver.
2004-09-24 07:16:56 +00:00
Poul-Henning Kamp
fe0b82752b Eliminate devsw() call, we are not dereferencing the pointer. 2004-09-24 07:11:02 +00:00
Poul-Henning Kamp
8ff33adb8c Hold threadref while we throb cdevsw in devtoname() 2004-09-24 06:29:23 +00:00
Poul-Henning Kamp
38f878d739 Use vn_isdisk() to check if vnode is a disk.
(repeat, CVS core dumped on me)
2004-09-24 06:23:31 +00:00
Poul-Henning Kamp
233b81be1c use vn_isdisk() to see if vnode is a disk. 2004-09-24 06:21:43 +00:00
Poul-Henning Kamp
6e8d420249 Hold dev_lock and check for NULL devsw pointer when we service FIODTYPE ioctl. 2004-09-24 06:16:48 +00:00
Poul-Henning Kamp
70526ca6a5 Hold dev_lock and check for NULL devsw pointer when we determine
if a vnode is a disk.
2004-09-24 06:16:08 +00:00
Poul-Henning Kamp
6230ce6aa9 use dev_re[fl]thread() rather than home rolled versions. 2004-09-24 05:55:03 +00:00
Poul-Henning Kamp
2c15afd888 Introduce dev_re[lf]thread() functions.
dev_refthread() will return the cdevsw pointer or NULL.  If the
return value is non-NULL a threadcount is held which much be released
with dev_relthread().  If the returned cdevsw is NULL no threadcount
is held on the device.
2004-09-24 05:54:32 +00:00
John Baldwin
6111dcd2ef A modest collection of various and sundry style, spelling, and whitespace
fixes.

Submitted by:	bde (mostly)
2004-09-24 00:38:15 +00:00
Olivier Houchard
e0370a187c On arm, set the default elf brand to FreeBSD, until the binutils do it for us. 2004-09-23 23:29:24 +00:00
John Baldwin
ea73c1ea21 Don't try to protect td_sticks with sched_lock. It doesn't need it as it
is only accessed by curthread.
2004-09-23 21:03:58 +00:00
John Baldwin
654e92bf10 - Assert sched_lock in upcall_remove() since it is needed there and all
callers already lock it there.
- Lock sched_lock slightly earlier in kse_create() so that it covers
  kg_numupcalls.
2004-09-23 21:03:16 +00:00
John Baldwin
63993cf011 - Don't try to unlock Giant if single threading fails since we don't have
it locked.
- Unlock Giant before calling exit1() since exit1() does not require Giant.
2004-09-23 21:01:50 +00:00
Poul-Henning Kamp
fd92686dd5 Split the ioctl function in control and slave side, this eliminated
a troublesome devsw() call.
2004-09-23 16:13:46 +00:00
Poul-Henning Kamp
1a52a73d68 Eliminate DEV_STRATEGY() macro: call dev_strategy() directly.
Make dev_strategy() handle errors and departing devices properly.
2004-09-23 14:45:04 +00:00
Pawel Jakub Dawidek
5a19f8b0c4 Introduce new /boot/loader.conf variable: root_mount_delay.
It can be used to delay mounting root partition to give a chance to GEOM
providers to show up.
Now, when there is no needed provider, vfs_rootmount() function will look
for it every second and if it can't be find in defined time, it'll ask
for root device name (before this change it was done immediately).

This will allow to boot from gmirror device in degraded mode.
2004-09-23 10:13:18 +00:00
Poul-Henning Kamp
a0e78d2eb0 Do not refcount the cdevsw, but rather maintain a cdev->si_threadcount
of the number of threads which are inside whatever is behind the
cdevsw for this particular cdev.

Make the device mutex visible through dev_lock() and dev_unlock().
We may want finer granularity later.

Replace spechash_mtx use with dev_lock()/dev_unlock().
2004-09-23 07:17:41 +00:00
John Baldwin
7eaec467d8 Various small style fixes. 2004-09-22 15:24:33 +00:00
Julian Elischer
2e2e32b201 Revert the last change..
Better to kill all other threads than to panic the system if 2 threads call
execve() at the same time. A better fix will be committed later.

Note that this only affects the case where the execve fails.
2004-09-22 01:30:23 +00:00
Julian Elischer
297800599a In a threaded process, don't kill off all the other threads until we have a
reasonable chance that the eceve() is going to succeeed. I.e.
wait until we've done the permission checks etc.

MFC after:	1 week
2004-09-21 21:05:13 +00:00
Poul-Henning Kamp
90a660e199 If a vnode has no v_rdev we cannot hope to answer FIODTYPE ioctl. 2004-09-21 08:33:05 +00:00
John Baldwin
b89daf89a8 Remove unused macro. 2004-09-20 19:01:44 +00:00
Brian Somers
a04946cf6e CTASSERT that MSZIE is a power of 2 (otherwise dtom() breaks)
Ask uma_zcreate() to align mbufs to MSIZE bytes (otherwise dtom() breaks)

As it happens, uma_zalloc_arg() always returned mbufs aligned to MSIZE
anyway, but that was an implementation side-effect....

KASSERT -> CTASSERT suggested by: dd@
Approved by:	silence on -net
2004-09-20 08:52:04 +00:00
David Schultz
8daa8c602a The zone from which proc structures are allocated is marked
UMA_ZONE_NOFREE to guarantee type stability, so proc_fini() should
never be called.  Move an assertion from proc_fini() to proc_dtor()
and garbage-collect the rest of the unreachable code.  I have retained
vm_proc_dispose(), since I consider its disuse a bug.
2004-09-19 18:34:17 +00:00
Poul-Henning Kamp
9e16d66689 Initialize new ttys a bit more.
Check TS_GONE flag for gone-ness.
2004-09-18 17:02:18 +00:00
Marcel Moolenaar
ddf4122592 Move makectx() after kdb_cpu_trap(), so the PCB will have possible MD
corrections made to the trapframe. This is more logical.
2004-09-17 22:27:23 +00:00