Jeff Roberson ff8fbcffcb Solve a complex exit race introduced with thread_lock: ...

- Add a count of exiting threads, p_exitthreads, to struct proc.
 - Increment p_exithreads when we set the deadthread in thread_exit().
 - When we thread_stash() a deadthread use an atomic to drop the count.
 - Spin until the p_exithreads count reaches 0 in thread_wait().
 - Lock the last exiting thread momentarily to be certain that it has
   exited cpu_throw().
 - Restructure thread_wait().  It does not need a loop as there will only
   ever be one thread.

Tested by:	moose@opera.com
Reported by:	kris, moose@opera.com

2007-06-12 07:24:46 +00:00

..

bus_if.m

o break newbus api: add a new argument of type driver_filter_t to

2007-02-23 12:19:07 +00:00

clock_if.m

…

cpufreq_if.m

…

device_if.m

…

genassym.sh

…

imgact_aout.c

Correct two vm object reference leaks in error cases.

2006-03-16 08:51:59 +00:00

imgact_elf32.c

…

imgact_elf64.c

…

imgact_elf.c

Rework the support for ABIs to override resource limits (used by 32-bit

2007-05-14 22:40:04 +00:00

imgact_gzip.c

…

imgact_shell.c

…

inflate.c

…

init_main.c

Fix a bug caming from the committing a pre-merge version of the patch

2007-06-10 00:28:41 +00:00

init_sysent.c

This commits the remake in kern/ make sysent to get

2006-11-03 18:57:49 +00:00

kern_acct.c

rufetch and calcru sometimes should be called atomically together.

2007-06-09 21:48:44 +00:00

kern_alq.c

Change the VOP_OPEN(), vn_open() vnode operation and d_fdopen() cdev operation

2007-06-01 14:33:11 +00:00

kern_clock.c

Since locking in kern/subr_prof.c is changed a bit, we need nomore of

2007-06-09 19:41:14 +00:00

kern_condvar.c

Commit 2/14 of sched_lock decomposition.

2007-06-04 23:50:56 +00:00

kern_conf.c

Revert UF_OPENING workaround for CURRENT.

2007-05-31 11:51:53 +00:00

kern_context.c

Further system call comment cleanup:

2007-03-05 13:10:58 +00:00

kern_cpu.c

Commit 14/14 of sched_lock decomposition.

2007-06-05 00:00:57 +00:00

kern_descrip.c

Revert UF_OPENING workaround for CURRENT.

2007-05-31 11:51:53 +00:00

kern_environment.c

Further system call comment cleanup:

2007-03-05 13:10:58 +00:00

kern_event.c

In kern_kevent(), unconditionally fdrop() fp once fget() has succeeded,

2007-05-28 17:15:05 +00:00

kern_exec.c

Eliminate now-unused SUSER_ALLOWJAIL arguments to priv_check_cred(); in

2007-06-12 00:12:01 +00:00

kern_exit.c

rufetch and calcru sometimes should be called atomically together.

2007-06-09 21:48:44 +00:00

kern_fork.c

Eliminate now-unused SUSER_ALLOWJAIL arguments to priv_check_cred(); in

2007-06-12 00:12:01 +00:00

kern_idle.c

Commit 14/14 of sched_lock decomposition.

2007-06-05 00:00:57 +00:00

kern_intr.c

Commit 14/14 of sched_lock decomposition.

2007-06-05 00:00:57 +00:00

kern_jail.c

Fix jails and jail-friendly file systems handling:

2007-04-13 23:54:22 +00:00

kern_kse.c

Commit 7/14 of sched_lock decomposition.

2007-06-04 23:54:27 +00:00

kern_kthread.c

Commit 14/14 of sched_lock decomposition.

2007-06-05 00:00:57 +00:00

kern_ktr.c

Remove slightly oddly placed suser() call from the KTR/ALQ setup sysctl:

2006-09-09 16:09:01 +00:00

kern_ktrace.c

Eliminate now-unused SUSER_ALLOWJAIL arguments to priv_check_cred(); in

2007-06-12 00:12:01 +00:00

kern_linker.c

Revert UF_OPENING workaround for CURRENT.

2007-05-31 11:51:53 +00:00

kern_lock.c

Move lock_profile_object_{init,destroy}() into lock_{init,destroy}().

2007-05-18 15:04:59 +00:00

kern_lockf.c

Commit 14/14 of sched_lock decomposition.

2007-06-05 00:00:57 +00:00

kern_malloc.c

Revert VMCNT_* operations introduction.

2007-05-31 22:52:15 +00:00

kern_mbuf.c

Despite several examples in the kernel, the third argument of

2007-06-04 18:25:08 +00:00

kern_mib.c

Revert VMCNT_* operations introduction.

2007-05-31 22:52:15 +00:00

kern_module.c

Remove 'MPSAFE' annotations from the comments above most system calls: all

2007-03-04 22:36:48 +00:00

kern_mtxpool.c

Universally adopt most conventional spelling of acquire.

2007-05-27 20:50:23 +00:00

kern_mutex.c

Propagate volatile qualifier to make gcc4.2 happy.

2007-06-09 18:09:37 +00:00

kern_ntptime.c

Further system call comment cleanup:

2007-03-05 13:10:58 +00:00

kern_physio.c

…

kern_pmc.c

…

kern_poll.c

Commit 14/14 of sched_lock decomposition.

2007-06-05 00:00:57 +00:00

kern_priv.c

Eliminate now-unused SUSER_ALLOWJAIL arguments to priv_check_cred(); in

2007-06-12 00:12:01 +00:00

kern_proc.c

rufetch and calcru sometimes should be called atomically together.

2007-06-09 21:48:44 +00:00

kern_prot.c

Eliminate now-unused SUSER_ALLOWJAIL arguments to priv_check_cred(); in

2007-06-12 00:12:01 +00:00

kern_resource.c

Eliminate now-unused SUSER_ALLOWJAIL arguments to priv_check_cred(); in

2007-06-12 00:12:01 +00:00

kern_rwlock.c

Commit 3/14 of sched_lock decomposition.

2007-06-04 23:51:44 +00:00

kern_sema.c

…

kern_shutdown.c

Commit 14/14 of sched_lock decomposition.

2007-06-05 00:00:57 +00:00

kern_sig.c

- Add a missing PROC_SUNLOCK() in tdsignal()

2007-06-11 23:27:03 +00:00

kern_subr.c

Commit 14/14 of sched_lock decomposition.

2007-06-05 00:00:57 +00:00

kern_switch.c

Commit 1/14 of sched_lock decomposition.

2007-06-04 23:50:30 +00:00

kern_sx.c

Add functions sx_xlock_sig() and sx_slock_sig().

2007-05-31 09:14:48 +00:00

kern_synch.c

Commit 2/14 of sched_lock decomposition.

2007-06-04 23:50:56 +00:00

kern_syscalls.c

Make system call modules a bit more robust:

2006-08-01 16:32:20 +00:00

kern_sysctl.c

Eliminate now-unused SUSER_ALLOWJAIL arguments to priv_check_cred(); in

2007-06-12 00:12:01 +00:00

kern_tc.c

Despite several examples in the kernel, the third argument of

2007-06-04 18:25:08 +00:00

kern_thr.c

- Remove unused variable from create_thread().

2007-06-07 19:45:19 +00:00

kern_thread.c

Solve a complex exit race introduced with thread_lock:

2007-06-12 07:24:46 +00:00

kern_time.c

rufetch and calcru sometimes should be called atomically together.

2007-06-09 21:48:44 +00:00

kern_timeout.c

Make the TCP timer callout obtain Giant if the network stack is marked

2007-05-11 20:52:47 +00:00

kern_umtx.c

Backout experimental adaptive-spin umtx code.

2007-06-06 07:35:08 +00:00

kern_uuid.c

Correct typo.

2007-04-23 12:53:00 +00:00

kern_xxx.c

Further system call comment cleanup:

2007-03-05 13:10:58 +00:00

ksched.c

Commit 14/14 of sched_lock decomposition.

2007-06-05 00:00:57 +00:00

link_elf_obj.c

Revert UF_OPENING workaround for CURRENT.

2007-05-31 11:51:53 +00:00

link_elf.c

Revert UF_OPENING workaround for CURRENT.

2007-05-31 11:51:53 +00:00

linker_if.m

…

Make.tags.inc

Update entries for building tags.

2007-05-13 18:21:54 +00:00

Makefile

Add support for the generated file systrace_args.c.

2006-08-05 19:25:14 +00:00

makesyscalls.sh

Merge posix4/* into normal kernel hierarchy.

2006-11-11 16:26:58 +00:00

md4c.c

…

md5c.c

Fix a panic on sparc64 related to inproper aligment - we cannot assume,

2006-03-30 18:45:50 +00:00

p1003_1b.c

Further system call comment cleanup:

2007-03-05 13:10:58 +00:00

posix4_mib.c

Fix mispatch of includes list; allows my kernel to build successfully.

2006-11-12 03:34:03 +00:00

sched_4bsd.c

- Placing the 'volatile' on the right side of the * in the td_lock

2007-06-06 03:40:47 +00:00

sched_ule.c

- Placing the 'volatile' on the right side of the * in the td_lock

2007-06-06 03:40:47 +00:00

serdev_if.m

MFp4: Add the ipend() method to the serdev I/F to allow umbrella

2006-04-23 22:12:39 +00:00

subr_acl_posix1e.c

Eliminate now-unused SUSER_ALLOWJAIL arguments to priv_check_cred(); in

2007-06-12 00:12:01 +00:00

subr_autoconf.c

Add a mutex to protect the list of interrupt config hooks. We do assume

2006-07-19 18:53:56 +00:00

subr_blist.c

…

subr_bus.c

fix comment typo

2007-05-23 17:28:21 +00:00

subr_clist.c

…

subr_clock.c

Use utc_offset() where applicable, and hide the internals of it

2006-10-02 18:23:37 +00:00

subr_devstat.c

…

subr_disk.c

Add a new I/O request - BIO_FLUSH, which basically tells providers below to

2006-10-31 21:11:21 +00:00

subr_eventhandler.c

…

subr_fattime.c

Better naming of fattime conversion functions, they do convert to timespec

2006-10-24 10:27:23 +00:00

subr_firmware.c

Cleanup and document the implementation of firmware(9) based on

2007-02-15 17:21:31 +00:00

subr_hints.c

Use a sleep mutex instead of an sx lock for the kernel environment. This

2006-07-09 21:42:58 +00:00

subr_kdb.c

Add a funny sysctl: debug.kdb.trap_code .

2006-06-18 12:27:59 +00:00

subr_kobj.c

…

subr_lock.c

Revert some debugging KTRs that were added during development.

2007-06-03 18:24:31 +00:00

subr_log.c

…

subr_mbpool.c

Add parens around *free in *free++ in mbp_count() so that mbp_count()

2007-05-27 17:38:36 +00:00

subr_mchain.c

…

subr_module.c

…

subr_msgbuf.c

…

subr_param.c

…

subr_pcpu.c

…

subr_power.c

…

subr_prf.c

Instead of doing comparisons using the pcpu area to see if

2007-03-08 06:44:34 +00:00

subr_prof.c

Commit 14/14 of sched_lock decomposition.

2007-06-05 00:00:57 +00:00

subr_rman.c

Complete removal of restriction about overlaps to rman_manage_region:

2007-04-28 07:37:49 +00:00

subr_rtc.c

Use utc_offset() where applicable, and hide the internals of it

2006-10-02 18:23:37 +00:00

subr_sbuf.c

…

subr_scanf.c

…

subr_sleepqueue.c

Commit 2/14 of sched_lock decomposition.

2007-06-04 23:50:56 +00:00

subr_smp.c

Commit 14/14 of sched_lock decomposition.

2007-06-05 00:00:57 +00:00

subr_stack.c

Correct typos

2006-05-28 22:15:28 +00:00

subr_taskqueue.c

Commit 14/14 of sched_lock decomposition.

2007-06-05 00:00:57 +00:00

subr_trap.c

Commit 14/14 of sched_lock decomposition.

2007-06-05 00:00:57 +00:00

subr_turnstile.c

Commit 3/14 of sched_lock decomposition.

2007-06-04 23:51:44 +00:00

subr_unit.c

…

subr_witness.c

Update 802.11 wireless support:

2007-06-11 03:36:55 +00:00

sys_generic.c

Commit 14/14 of sched_lock decomposition.

2007-06-05 00:00:57 +00:00

sys_pipe.c

Remove amountpipes counter for pipes -- this replicates the function of

2007-05-27 17:33:10 +00:00

sys_process.c

Commit 14/14 of sched_lock decomposition.

2007-06-05 00:00:57 +00:00

sys_socket.c

Move to ANSI C function headers. Re-wrap some comments.

2007-03-04 17:50:46 +00:00

syscalls.c

This commits the remake in kern/ make sysent to get

2006-11-03 18:57:49 +00:00

syscalls.master

Ok, here it is, we finally add SCTP to current. Note that this

2006-11-03 15:23:16 +00:00

systrace_args.c

Ok, here it is, we finally add SCTP to current. Note that this

2006-11-03 15:23:16 +00:00

sysv_ipc.c

Eliminate now-unused SUSER_ALLOWJAIL arguments to priv_check_cred(); in

2007-06-12 00:12:01 +00:00

sysv_msg.c

Eliminate now-unused SUSER_ALLOWJAIL arguments to priv_check_cred(); in

2007-06-12 00:12:01 +00:00

sysv_sem.c

Avoid manipulating semu_list outside of the scope of SEMUNDO_LOCK(). This

2007-03-26 17:41:14 +00:00

sysv_shm.c

Further system call comment cleanup:

2007-03-05 13:10:58 +00:00

tty_compat.c

…

tty_conf.c

…

tty_cons.c

Revert UF_OPENING workaround for CURRENT.

2007-05-31 11:51:53 +00:00

tty_pts.c

Canonicalize copyrights in some files I hold copyrights on:

2007-01-08 17:49:59 +00:00

tty_pty.c

Sweep kernel replacing suser(9) calls with priv(9) calls, assigning

2006-11-06 13:42:10 +00:00

tty_subr.c

…

tty_tty.c

Use ctty instead of just returning. ctty just has a simple open that

2006-09-27 16:41:15 +00:00

tty.c

Re-acquire the PROC_SLOCK before calling calcru(), and release it after,

2007-06-11 21:05:41 +00:00

uipc_accf.c

…

uipc_cow.c

…

uipc_debug.c

sblock() implements a sleep lock by interlocking SB_WANT and SB_LOCK flags

2007-05-03 14:42:42 +00:00

uipc_domain.c

Generally migrate to ANSI function headers, and remove 'register' use.

2007-05-16 20:41:08 +00:00

uipc_mbuf2.c

Complete break-out of sys/sys/mac.h into sys/security/mac/mac_framework.h

2006-10-22 11:52:19 +00:00

uipc_mbuf.c

Generally migrate to ANSI function headers, and remove 'register' use.

2007-05-16 20:41:08 +00:00

uipc_mqueue.c

Eliminate now-unused SUSER_ALLOWJAIL arguments to priv_check_cred(); in

2007-06-12 00:12:01 +00:00

uipc_sem.c

Further system call comment cleanup:

2007-03-05 13:10:58 +00:00

uipc_sockbuf.c

Now that sx(9) locks support an interruptible lock acquire primitive,

2007-05-31 11:51:22 +00:00

uipc_socket.c

Despite several examples in the kernel, the third argument of

2007-06-04 18:25:08 +00:00

uipc_syscalls.c

In kern_sendfile() adjust byte accounting of the file sending loop to

2007-05-19 20:50:59 +00:00

uipc_usrreq.c

Add DDB "show unpcb" command, allowing DDB to print out many pertinent

2007-05-29 12:36:00 +00:00

vfs_acl.c

Replay minor system call comment cleanup applied to kern_acl.c in a race

2007-03-05 13:26:07 +00:00

vfs_aio.c

Remove unused variable.

2007-06-10 01:50:05 +00:00

vfs_bio.c

Work around an integer overflow in expression `3 * maxbufspace / 4',

2007-06-09 23:41:14 +00:00

vfs_cache.c

To avoid a deadlock when handling .. directory during a lookup, we unlock

2007-05-25 22:23:38 +00:00

vfs_cluster.c

- Move rusage from being per-process in struct pstats to per-thread in

2007-06-01 01:12:45 +00:00

vfs_default.c

Since renaming of vop_lock to _vop_lock, pre- and post-condition

2007-05-18 13:02:13 +00:00

vfs_export.c

Move vnode-to-file-handle translation from vfs_vptofh to vop_vptofh method.

2007-02-15 22:08:35 +00:00

vfs_extattr.c

Update comments to reflect changes in the extattrctl() code.

2006-12-23 00:30:03 +00:00

vfs_hash.c

Make insmntque() externally visibile and allow it to fail (e.g. during

2007-03-13 01:50:27 +00:00

vfs_init.c

Remove VFS_VPTOFH entirely. API is already broken and it is good time to

2007-02-16 17:32:41 +00:00

vfs_lookup.c

Universally adopt most conventional spelling of acquire.

2007-05-27 20:50:23 +00:00

vfs_mount.c

Eliminate now-unused SUSER_ALLOWJAIL arguments to priv_check_cred(); in

2007-06-12 00:12:01 +00:00

vfs_subr.c

Eliminate now-unused SUSER_ALLOWJAIL arguments to priv_check_cred(); in

2007-06-12 00:12:01 +00:00

vfs_syscalls.c

Eliminate now-unused SUSER_ALLOWJAIL arguments to priv_check_cred(); in

2007-06-12 00:12:01 +00:00

vfs_vnops.c

Revert UF_OPENING workaround for CURRENT.

2007-05-31 11:51:53 +00:00

vnode_if.src

Revert UF_OPENING workaround for CURRENT.

2007-05-31 11:51:53 +00:00