Commit Graph

104891 Commits

Author SHA1 Message Date
David Xu
dd094c943d Copy lwp id to thread mailbox. 2004-07-14 00:58:53 +00:00
Peter Wemm
707783de09 Regen 2004-07-14 00:03:51 +00:00
Peter Wemm
1174965ee2 Unmapped syscalls should be NOPROTO so that we don't get a duplicate
prototype.  (kldunloadf in this case)
2004-07-14 00:03:30 +00:00
David Xu
e378b41cb4 Call kse_switchin to switch context when being debugged. 2004-07-13 22:54:23 +00:00
David Xu
63db3fb215 Remove unused symbols. 2004-07-13 22:53:56 +00:00
David Xu
5c1a1421fe Export necessary symbols to debugger. 2004-07-13 22:52:53 +00:00
David Xu
c7f5b2dbc5 Let debugger check signal, make SIGINFO works. 2004-07-13 22:52:11 +00:00
David Xu
099e4630c1 If _libkse_debug is not zero, activate thread mode. 2004-07-13 22:51:03 +00:00
David Xu
566382df0a Add code to support thread debugging.
1. Add global varible _libkse_debug, debugger uses the varible to identify
   libpthread. when the varible is written to non-zero by debugger, libpthread
   will take some special action at context switch time, it will check
   TMDF_DOTRUNUSER flags, if a thread has the flags set by debugger, it won't
   be scheduled, when a thread leaves KSE critical region, thread checks
   the flag, if it was set, the thread relinquish CPU.

2. Add pq_first_debug to select a thread allowd to run by debugger.

3. Some names prefixed with _thr are renamed to _thread prefix.

which is allowed to run by debugger.
2004-07-13 22:49:58 +00:00
Olivier Houchard
8908521788 In pmap_remove_pages(), when the pv_list is entry, we want to clean the
PG_WRITEABLE flag, not the PG_REFERENCED flag.

Submitted by:   alc
2004-07-13 22:40:59 +00:00
John Baldwin
6942d4339e Set TDF_NEEDRESCHED when a higher priority thread is scheduled in
sched_add() rather than just doing it in sched_wakeup().  The old
ithread preemption code used to set NEEDRESCHED unconditionally if it
didn't preempt which masked this bug in SCHED_4BSD.

Noticed by:	jake
Reported by:	kensmith, marcel
2004-07-13 20:49:13 +00:00
Poul-Henning Kamp
65a311fcb2 Give kldunload a -f(orce) argument.
Add a MOD_QUIESCE event for modules.  This should return error (EBUSY)
of the module is in use.

MOD_UNLOAD should now only fail if it is impossible (as opposed to
inconvenient) to unload the module.  Valid reasons are memory references
into the module which cannot be tracked down and eliminated.

When kldunloading, we abandon if MOD_UNLOAD fails, and if -force is
not given, MOD_QUIESCE failing will also prevent the unload.

For backwards compatibility, we treat EOPNOTSUPP from MOD_QUIESCE as
success.

Document that modules should return EOPNOTSUPP for unknown events.
2004-07-13 19:36:59 +00:00
Poul-Henning Kamp
1a946b9fef Add kldunloadf() system call. Stay tuned for follwing commit messages. 2004-07-13 19:35:11 +00:00
Nate Lawson
d40c0f5324 Clean up our pnpinfo and location strings. 2004-07-13 18:59:49 +00:00
Nate Lawson
edc136334b Call device_identify routines after doing the namespace walk. This is
needed so that sysresource objects are created first to reserve all regions,
then other devices can allocate from them.  Otherwise, acpi_timer (the only
ACPI device with an identify routine), would allocate its resources from
the nexus, causing the later sysresource reserve to fail.

Debugging by:	Taku YAMAMOTO, Andrea Campi
2004-07-13 17:57:41 +00:00
Poul-Henning Kamp
3f4324df4d Send the fla driver in the Attic 2004-07-13 17:44:17 +00:00
Poul-Henning Kamp
ec712659ef Desupport M-Systems DiskOnChip driver "fla" 2004-07-13 17:43:03 +00:00
Poul-Henning Kamp
49bddf0c9f fix compilation. 2004-07-13 16:33:38 +00:00
Warner Losh
4b5239229c oldcard's card device no longer requires a count 2004-07-13 16:11:34 +00:00
Ken Smith
546d42ad9d Rev 1.24 of sys/ptrace.h adds ptrace_clear_single_step() prototype
definition so this one causes "redundant declaration" error and breaks
Alpha kernel build.

Reviewed by:	gallatin@ and test build on beast
2004-07-13 16:11:04 +00:00
Stefan Farfeleder
439dfb0c35 Remove erroneous semicolons. 2004-07-13 16:06:19 +00:00
Yoshihiro Takahashi
64c232e672 Merged from recent fdc driver changes.
Make a separate function to check FDD type.
2004-07-13 13:14:37 +00:00
Colin Percival
65bba83fef Replace "uid != 0" with "suser(td->td_ucred) != 0" when checking if we've
hit the maximum number of processes.  The last ten processes are reserved
for the *non-jailed* superuser.
2004-07-13 13:10:07 +00:00
Yoshihiro Takahashi
61e878c58c MFi386: revision 1.213.
Fix miss merging in previous change.
2004-07-13 12:58:36 +00:00
Pawel Jakub Dawidek
608e135b58 Document sysctl variables.
Based on:	simon's patch
2004-07-13 12:32:20 +00:00
Pawel Jakub Dawidek
3d3ddf3470 Those sysctl are used to control GEOM class, not a userland utility.
Reviewed by:	simon
2004-07-13 12:30:11 +00:00
Pawel Jakub Dawidek
f3b3b0ce27 Remove unused macro. 2004-07-13 12:01:29 +00:00
Pawel Jakub Dawidek
45c26487a7 Decrease log level of one debug message, so there is no hole (level 2
wasn't used at all).
2004-07-13 12:01:11 +00:00
Pawel Jakub Dawidek
11eeab06ba Document sysctls variables used by GEOM_STRIPE class.
Submitted by:	simon
2004-07-13 11:28:40 +00:00
Pawel Jakub Dawidek
71df072547 Minor sysctl description fixes.
Submitted by:	simon
2004-07-13 11:23:31 +00:00
Poul-Henning Kamp
d521eae21d Another LINT compilation fix 2004-07-13 09:47:27 +00:00
Poul-Henning Kamp
a546742dd7 Make LINT compile 2004-07-13 09:46:46 +00:00
Hidetoshi Shimokawa
20021e6afd Re-enable debugger port. 2004-07-13 09:41:45 +00:00
Hidetoshi Shimokawa
fbf96e52bb Replace DDB with KDB. 2004-07-13 09:37:49 +00:00
David Xu
4d47dc5549 Add code to support debugging threaded process.
1. Add tm_lwpid into kse_thr_mailbox to indicate which kernel
     thread current user thread is running on. Add tm_dflags into
     kse_thr_mailbox, the flags is written by debugger, it tells
     UTS and kernel what should be done when the process is being
     debugged, current, there two flags TMDF_SSTEP and TMDF_DONOTRUNUSER.

     TMDF_SSTEP is used to tell kernel to turn on single stepping,
     or turn off if it is not set.

     TMDF_DONOTRUNUSER is used to tell kernel to schedule upcall
     whenever possible, to UTS, it means do not run the user thread
     until debugger clears it, this behaviour is necessary because
     gdb wants to resume only one thread when the thread's pc is
     at a breakpoint, and thread needs to go forward, in order to
     avoid other threads sneak pass the breakpoints, it needs to remove
     breakpoint, only wants one thread to go. Also, add km_lwp to
     kse_mailbox, the lwp id is copied to kse_thr_mailbox at context
     switch time when process is not being debugged, so when process
     is attached, debugger can map kernel thread to user thread.

  2. Add p_xthread to proc strcuture and td_xsig to thread structure.
     p_xthread is used by a thread when it wants to report event
     to debugger, every thread can set the pointer, especially, when
     it is used in ptracestop, it is the last thread reporting event
     will win the race. Every thread has a td_xsig to exchange signal
     with debugger, thread uses TDF_XSIG flag to indicate it is reporting
     signal to debugger, if the flag is not cleared, thread will keep
     retrying until it is cleared by debugger, p_xthread may be
     used by debugger to indicate CURRENT thread. The p_xstat is still
     in proc structure to keep wait() to work, in future, we may
     just use td_xsig.

  3. Add TDF_DBSUSPEND flag, the flag is used by debugger to suspend
     a thread. When process stops, debugger can set the flag for
     thread, thread will check the flag in thread_suspend_check,
     enters a loop, unless it is cleared by debugger, process is
     detached or process is existing. The flag is also checked in
     ptracestop, so debugger can temporarily suspend a thread even
     if the thread wants to exchange signal.

  4. Current, in ptrace, we always resume all threads, but if a thread
     has already a TDF_DBSUSPEND flag set by debugger, it won't run.

Encouraged by: marcel, julian, deischen
2004-07-13 07:33:40 +00:00
David Xu
ef9457becb Implement following commands: PT_CLEARSTEP, PT_SETSTEP, PT_SUSPEND
PT_RESUME, PT_GETNUMLWPS, PT_GETLWPLIST.
2004-07-13 07:25:24 +00:00
David Xu
53dbf30349 Add ptrace_clear_single_step(), alpha already has it for years, the function
will be used by ptrace to clear a thread's single step state.
2004-07-13 07:22:56 +00:00
David Xu
cbf4e354ec Add code to support debugging threaded process.
1. Add tm_lwpid into kse_thr_mailbox to indicate which kernel
   thread current user thread is running on. Add tm_dflags into
   kse_thr_mailbox, the flags is written by debugger, it tells
   UTS and kernel what should be done when the process is being
   debugged, current, there two flags TMDF_SSTEP and TMDF_DONOTRUNUSER.

   TMDF_SSTEP is used to tell kernel to turn on single stepping,
   or turn off if it is not set.

   TMDF_DONOTRUNUSER is used to tell kernel to schedule upcall
   whenever possible, to UTS, it means do not run the user thread
   until debugger clears it, this behaviour is necessary because
   gdb wants to resume only one thread when the thread's pc is
   at a breakpoint, and thread needs to go forward, in order to
   avoid other threads sneak pass the breakpoints, it needs to remove
   breakpoint, only wants one thread to go. Also, add km_lwp to
   kse_mailbox, the lwp id is copied to kse_thr_mailbox at context
   switch time when process is not being debugged, so when process
   is attached, debugger can map kernel thread to user thread.

2. Add p_xthread to proc strcuture and td_xsig to thread structure.
   p_xthread is used by a thread when it wants to report event
   to debugger, every thread can set the pointer, especially, when
   it is used in ptracestop, it is the last thread reporting event
   will win the race. Every thread has a td_xsig to exchange signal
   with debugger, thread uses TDF_XSIG flag to indicate it is reporting
   signal to debugger, if the flag is not cleared, thread will keep
   retrying until it is cleared by debugger, p_xthread may be
   used by debugger to indicate CURRENT thread. The p_xstat is still
   in proc structure to keep wait() to work, in future, we may
   just use td_xsig.

3. Add TDF_DBSUSPEND flag, the flag is used by debugger to suspend
   a thread. When process stops, debugger can set the flag for
   thread, thread will check the flag in thread_suspend_check,
   enters a loop, unless it is cleared by debugger, process is
   detached or process is existing. The flag is also checked in
   ptracestop, so debugger can temporarily suspend a thread even
   if the thread wants to exchange signal.

4. Current, in ptrace, we always resume all threads, but if a thread
   has already a TDF_DBSUSPEND flag set by debugger, it won't run.

Encouraged by: marcel, julian, deischen
2004-07-13 07:20:10 +00:00
Alfred Perlstein
d83ed0fac0 Do not call sorecieve() in the context of a socket callback as it causes
lock order reversals so->inpcb since we're called with the socket lock
held.
2004-07-13 07:05:38 +00:00
Alan Cox
440382a953 Simplify pmap_protect(). 2004-07-13 06:54:23 +00:00
Alfred Perlstein
8f0a7125a1 Turn off SO_REUSEADDR and SO_REUSEPORT, they were causing EADDRINUSE
to be returned from the protocol stack.

Pointy hat to me for not groking what those options _really_ mean.
2004-07-13 05:42:59 +00:00
Tim J. Robbins
b4828720f7 Overhaul lputs() to deal with multibyte characters, characters that take
up more than one column position, and null bytes.
2004-07-13 04:35:43 +00:00
Alan Cox
ce8da3091f Push down the acquisition and release of the page queues lock into
pmap_remove_pages().  (The implementation of pmap_remove_pages() is
optional.  If pmap_remove_pages() is unimplemented, the acquisition and
release of the page queues lock is unnecessary.)

Remove spl calls from the alpha, arm, and ia64 pmap_remove_pages().
2004-07-13 02:49:22 +00:00
Warner Losh
b0c2b92548 Set fdc_dev in attach 2004-07-13 02:44:40 +00:00
Warner Losh
c3ae4c40ef Don't depend on implicit include of machine/bus.h in sys/rman.h, but instead
explicitly include it.
2004-07-13 02:42:23 +00:00
Warner Losh
e79a88db72 pccard no longer requires a count because the floppy driver that
nominally had a non-working reference to card.h has been removed.
2004-07-13 02:37:40 +00:00
Tim J. Robbins
33ec7f265b Add support for multibyte characters. 2004-07-13 02:18:21 +00:00
Warner Losh
7eb52d171e Remove even more references to generating usbdevs_data.h, et al.
Noticed by: njl
2004-07-12 23:11:09 +00:00
Warner Losh
77967bd75c Remove the instructions for regenerating usbdevs.h: that's now no
longer necessary.
2004-07-12 22:57:06 +00:00
Peter Grehan
441e42eaf4 Rename low-level code ddb -> db. Use KDB instead of DDB.
Fix bug in setup of stack frame where 8 bytes wasn't being
saved for the callee's frame pointer and saved LR.
2004-07-12 22:32:08 +00:00