fabient e0588db8d2 Clearing the flag when preempting will let the preempted thread run ...

too much time. This can finish in a scheduler deadlock with ping-pong
between two threads.

One sample of this is:
- device lapic (to have a preemption point on critical_exit())
- options DEVICE_POLLING with HZ>1499 (to have lapic freq = hardclock freq)
- running a cpu intensive task (that does not enter the kernel)
- only one CPU on SMP or no SMP.

As requested by jhb@ 4BSD have received the same type of fix instead of
propagating the flag to the new thread.

Reviewed by:	jhb, jeff
MFC after:	1 month

2011-03-31 13:59:47 +00:00

..

bus_if.m

bus_add_child: add specialized default implementation that calls panic

2010-09-13 08:34:20 +00:00

capabilities.conf

Continue to introduce Capsicum Capability Mode support:

2011-03-01 13:28:27 +00:00

clock_if.m

…

cpufreq_if.m

…

device_if.m

…

genassym.sh

…

imgact_aout.c

Extend struct sysvec with new method sv_schedtail, which is used for an

2011-03-08 19:01:45 +00:00

imgact_elf32.c

…

imgact_elf64.c

…

imgact_elf.c

Put the general logic for being a CPU hog into a new function

2011-02-02 16:35:10 +00:00

imgact_gzip.c

…

imgact_shell.c

The execution of the shebang script requires putting interpreter path,

2011-03-06 22:59:30 +00:00

inflate.c

…

init_main.c

Add racct. It's an API to keep per-process, per-jail, per-loginclass

2011-03-29 17:47:25 +00:00

init_sysent.c

Regenerate.

2011-03-30 17:59:54 +00:00

kern_acct.c

Use ISO C99 integer types in sys/kern where possible.

2010-06-21 09:55:56 +00:00

kern_alq.c

- Rework the underlying ALQ storage to be a circular buffer, which amongst other

2010-04-26 13:48:22 +00:00

kern_clock.c

After some off-list discussion, revert a number of changes to the

2010-11-22 19:32:54 +00:00

kern_clocksource.c

sysctl(9) cleanup checkpoint: amd64 GENERIC builds cleanly.

2011-01-12 19:54:19 +00:00

kern_condvar.c

…

kern_conf.c

Fix race in devfs by using LIST_FIRST() instead of

2010-12-11 08:44:10 +00:00

kern_cons.c

Add descriptions to a handful of sysctl nodes.

2010-08-09 14:48:31 +00:00

kern_context.c

Clear the padding when returning context to the usermode, for

2011-02-05 15:10:27 +00:00

kern_cpu.c

cpufreq: allocate long-lived buffer for handling of sysctl requests

2010-07-23 16:46:42 +00:00

kern_cpuset.c

When constructing a new cpuset, apply the parent cpuset's mask to the new

2011-03-08 14:18:21 +00:00

kern_ctf.c

…

kern_descrip.c

Add O_CLOEXEC flag to open(2) and fhopen(2).

2011-03-25 14:00:36 +00:00

kern_dtrace.c

Add some FEATURE macros for various features (AUDIT/CAM/IPC/KTR/MAC/NFS/NTP/

2011-02-25 10:11:01 +00:00

kern_environment.c

Merge change r198561 from projects/mips to head:

2010-01-10 22:34:18 +00:00

kern_et.c

sysctl(9) cleanup checkpoint: amd64 GENERIC builds cleanly.

2011-01-12 19:54:19 +00:00

kern_event.c

Defer freeing a kevent list until after dropping kqueue locks.

2010-03-30 18:31:55 +00:00

kern_exec.c

Introduce preliminary support of the show description of the ABI of

2011-02-25 22:05:33 +00:00

kern_exit.c

Add racct. It's an API to keep per-process, per-jail, per-loginclass

2011-03-29 17:47:25 +00:00

kern_fail.c

Initialize fp_location for explicitly managed fail points, and push

2010-12-21 18:23:03 +00:00

kern_fork.c

Add racct. It's an API to keep per-process, per-jail, per-loginclass

2011-03-29 17:47:25 +00:00

kern_gzio.c

Do not set IO_NODELOCKED while writing to vnodes as our consumers

2010-04-30 03:10:53 +00:00

kern_hhook.c

Fix hhook_head_is_virtualised() so that "ret" can't be used uninitialised.

2011-01-11 01:11:07 +00:00

kern_idle.c

Split P_NOLOAD into a per-thread flag (TDF_NOLOAD).

2009-11-03 16:46:52 +00:00

kern_intr.c

- Merge changes to the base system to support OFED. These include

2011-03-21 09:40:01 +00:00

kern_jail.c

Add rctl. It's used by racct to take user-configurable actions based

2011-03-30 17:48:15 +00:00

kern_khelp.c

- Introduce the Hhook (Helper Hook) KPI. The KPI is closely modelled on pfil(9),

2010-12-21 13:45:29 +00:00

kern_kthread.c

- Properly initialize the base priority (td_base_pri) of thread0 to PVM

2011-01-06 22:26:00 +00:00

kern_ktr.c

Add some FEATURE macros for various features (AUDIT/CAM/IPC/KTR/MAC/NFS/NTP/

2011-02-25 10:11:01 +00:00

kern_ktrace.c

Style(9) fix.

2011-03-05 20:54:17 +00:00

kern_linker.c

Provide compat32 shims for kldstat(2).

2011-03-30 14:46:12 +00:00

kern_lock.c

Add some FEATURE macros for various features (AUDIT/CAM/IPC/KTR/MAC/NFS/NTP/

2011-02-25 10:11:01 +00:00

kern_lockf.c

…

kern_lockstat.c

…

kern_loginclass.c

Add racct. It's an API to keep per-process, per-jail, per-loginclass

2011-03-29 17:47:25 +00:00

kern_malloc.c

Modestly increase the maximum allowed size of the kmem map on i386.

2011-03-23 16:38:29 +00:00

kern_mbuf.c

Use ISO C99 integer types in sys/kern where possible.

2010-06-21 09:55:56 +00:00

kern_mib.c

sysctl(9) cleanup checkpoint: amd64 GENERIC builds cleanly.

2011-01-12 19:54:19 +00:00

kern_module.c

Style fix.

2010-11-22 15:28:54 +00:00

kern_mtxpool.c

…

kern_mutex.c

- Remove <machine/mutex.h>. Most of the headers were empty, and the

2010-11-09 20:46:41 +00:00

kern_ntptime.c

Add some FEATURE macros for various features (AUDIT/CAM/IPC/KTR/MAC/NFS/NTP/

2011-02-25 10:11:01 +00:00

kern_osd.c

…

kern_physio.c

Account i/o done on cdevs.

2010-11-25 20:05:11 +00:00

kern_pmc.c

Add some FEATURE macros for various features (AUDIT/CAM/IPC/KTR/MAC/NFS/NTP/

2011-02-25 10:11:01 +00:00

kern_poll.c

…

kern_priv.c

Add an extra comment to the SDT probes definition. This allows us to get

2010-08-22 11:18:57 +00:00

kern_proc.c

Fix some locking nits with the p_state field of struct proc:

2011-03-24 18:40:11 +00:00

kern_prot.c

Add two new system calls, setloginclass(2) and getloginclass(2). This makes

2011-03-05 12:40:35 +00:00

kern_racct.c

Remove pointless (always true) KASSERTs.

2011-03-29 19:19:10 +00:00

kern_rctl.c

Add rctl. It's used by racct to take user-configurable actions based

2011-03-30 17:48:15 +00:00

kern_resource.c

Add racct. It's an API to keep per-process, per-jail, per-loginclass

2011-03-29 17:47:25 +00:00

kern_rmlock.c

No need to include sys/systm.h twice.

2010-11-16 14:08:21 +00:00

kern_rwlock.c

Print the pointer to the lock with the panic message. The previous

2010-03-24 19:21:26 +00:00

kern_sdt.c

Use ISO C99 integer types in sys/kern where possible.

2010-06-21 09:55:56 +00:00

kern_sema.c

…

kern_shutdown.c

Mostly revert r203420, and add similar functionality into ada(4) since the

2010-10-24 16:31:57 +00:00

kern_sig.c

Small style fix.

2011-03-23 13:44:32 +00:00

kern_switch.c

Update several places that iterate over CPUs to use CPU_FOREACH().

2010-06-11 18:46:34 +00:00

kern_sx.c

- Merge changes to the base system to support OFED. These include

2011-03-21 09:40:01 +00:00

kern_synch.c

Based on discussions on the svn-src mailing list, rework r218195:

2011-02-08 00:16:36 +00:00

kern_syscalls.c

Call chainevh callback when we are invoked with neither MOD_LOAD nor

2010-10-21 20:31:50 +00:00

kern_sysctl.c

- Merge changes to the base system to support OFED. These include

2011-03-21 09:40:01 +00:00

kern_tc.c

Introduce signed and unsigned version of CTLTYPE_QUAD, renaming

2011-01-19 23:00:25 +00:00

kern_thr.c

Move the max_threads_per_proc and max_threads_hits variables to the

2011-02-23 13:50:24 +00:00

kern_thread.c

Fix some locking nits with the p_state field of struct proc:

2011-03-24 18:40:11 +00:00

kern_time.c

Create a global thread hash table to speed up thread lookup, use

2010-10-09 02:50:23 +00:00

kern_timeout.c

Revert r216805.

2011-01-08 18:51:15 +00:00

kern_umtx.c

Expose the umtx_key structure and API to the rest of the kernel.

2011-02-23 13:19:14 +00:00

kern_uuid.c

…

kern_xxx.c

…

ksched.c

Add some FEATURE macros for various features (AUDIT/CAM/IPC/KTR/MAC/NFS/NTP/

2011-02-25 10:11:01 +00:00

link_elf_obj.c

Similar to sys/net/vnet.h, define the linker set name for sys/sys/pcpu.h

2010-11-14 20:14:25 +00:00

link_elf.c

Whitespace and other aspects of style(9). No functional changes.

2010-11-08 20:57:08 +00:00

linker_if.m

…

Make.tags.inc

…

Makefile

Continue to introduce Capsicum Capability Mode support:

2011-03-01 13:28:27 +00:00

makesyscalls.sh

add DTrace systrace support for linux32 and freebsd32 on amd64 syscalls

2011-03-12 08:51:43 +00:00

md4c.c

…

md5c.c

…

p1003_1b.c

Set various POSIX capability sysctls to the version of the API that is

2010-11-19 17:56:16 +00:00

posix4_mib.c

Set various POSIX capability sysctls to the version of the API that is

2010-11-19 17:56:16 +00:00

sched_4bsd.c

Clearing the flag when preempting will let the preempted thread run

2011-03-31 13:59:47 +00:00

sched_ule.c

Clearing the flag when preempting will let the preempted thread run

2011-03-31 13:59:47 +00:00

serdev_if.m

…

stack_protector.c

Random number generator initialization cleanup:

2009-10-20 16:36:51 +00:00

subr_acl_nfs4.c

Make UFS use PSARC/2010/029 NFSv4 ACL semantics by default, bringing

2011-03-22 19:52:29 +00:00

subr_acl_posix1e.c

execve(2) has a special check for file permissions: a file must have at

2010-08-30 16:30:18 +00:00

subr_autoconf.c

Retire PCONFIG and leave the priority of thread0 alone when waiting for

2011-01-06 22:09:37 +00:00

subr_blist.c

…

subr_bufring.c

Switch to our preferred 2-clause BSD license.

2010-05-05 20:39:02 +00:00

subr_bus.c

- Merge changes to the base system to support OFED. These include

2011-03-21 09:40:01 +00:00

subr_clock.c

Improve style and wording of comments and sysctl descriptions [1].

2011-01-09 14:34:56 +00:00

subr_devstat.c

Finish r210923, 210926. Mark some devices as eternal.

2011-01-04 10:59:38 +00:00

subr_disk.c

Correct bioq_disksort so that bioq_insert_tail() offers barrier semantic.

2010-09-02 19:40:28 +00:00

subr_eventhandler.c

Split eventhandler_register() into an internal part and a wrapper function

2010-03-19 19:51:03 +00:00

subr_fattime.c

Use ISO C99 integer types in sys/kern where possible.

2010-06-21 09:55:56 +00:00

subr_firmware.c

Bump up the firmware_table from 30 to 50. bwn needs more than 30, it

2010-03-07 22:37:35 +00:00

subr_hash.c

Decompose the most lousy named file in sys/kern; kern_subr.c.

2010-02-21 19:53:33 +00:00

subr_hints.c

…

subr_kdb.c

Modify kdb_trap() so that it re-calls the dbbe_trap function as long as

2011-02-18 22:25:11 +00:00

subr_kobj.c

sysctl(9) cleanup checkpoint: amd64 GENERIC builds cleanly.

2011-01-12 19:54:19 +00:00

subr_lock.c

Explicitly wire the user buffer rather than doing it implicitly in

2011-01-27 00:34:12 +00:00

subr_log.c

Finish r210923, 210926. Mark some devices as eternal.

2011-01-04 10:59:38 +00:00

subr_mbpool.c

…

subr_mchain.c

Add some FEATURE macros for various features (AUDIT/CAM/IPC/KTR/MAC/NFS/NTP/

2011-02-25 10:11:01 +00:00

subr_module.c

Provide convenience function for obtaining MODINFO_ADDR and MODINFO_SIZE

2011-02-09 19:08:21 +00:00

subr_msgbuf.c

…

subr_param.c

Modestly increase the maximum allowed size of the kmem map on i386.

2011-03-23 16:38:29 +00:00

subr_pcpu.c

Remove unneeded includes of <sys/linker_set.h>. Other headers that use

2011-01-11 13:59:06 +00:00

subr_power.c

…

subr_prf.c

Use type-specific inline function imax() instead of deprecated macro MAX().

2010-07-12 15:32:45 +00:00

subr_prof.c

Revert r210225 - turns out I was wrong; the "/*-" is not license-only

2010-07-18 20:57:53 +00:00

subr_rman.c

…

subr_rtc.c

Add the half of time-of-day clock resolution when we adjust system time from

2010-08-12 17:17:05 +00:00

subr_sbuf.c

Re-add r212370 now that the LOR in powerpc64 has been resolved:

2010-09-16 16:13:12 +00:00

subr_scanf.c

…

subr_sglist.c

…

subr_sleepqueue.c

Explicitly wire the user buffer rather than doing it implicitly in

2011-01-27 00:34:12 +00:00

subr_smp.c

With smp_topo_none, set cg_mask to all_cpus rather than setting the mp_ncpus

2011-02-11 22:43:10 +00:00

subr_stack.c

Add some FEATURE macros for various features (AUDIT/CAM/IPC/KTR/MAC/NFS/NTP/

2011-02-25 10:11:01 +00:00

subr_taskqueue.c

taskqueue: drop unused tq_name field

2010-11-23 14:30:22 +00:00

subr_trap.c

Continue introducing Capsicum capability mode support:

2011-03-01 13:32:07 +00:00

subr_turnstile.c

Always assert that the turnstile chain lock is held in turnstile_wait()

2011-02-04 14:16:41 +00:00

subr_uio.c

Fix the check for vm_map_remove() error.

2011-03-28 19:44:54 +00:00

subr_unit.c

Fix typos - remove duplicate "the".

2011-02-21 09:01:34 +00:00

subr_witness.c

Fix typos - remove duplicate "the".

2011-02-21 09:01:34 +00:00

sys_capability.c

- Add a FEATURE for capsicum (security_capabilities).

2011-03-04 09:03:54 +00:00

sys_generic.c

For some file types, select code registers two selfd structures. E.g.,

2010-08-28 17:42:08 +00:00

sys_pipe.c

Update a comment. The sending process has not mapped the buffer pages

2011-03-20 15:04:43 +00:00

sys_process.c

Add macro to test the sv_flags of any process. Change some places to test

2011-01-26 20:03:58 +00:00

sys_socket.c

Mfp4 CH=177274,177280,177284-177285,177297,177324-177325

2011-02-16 21:29:13 +00:00

syscalls.c

Regenerate.

2011-03-30 17:59:54 +00:00

syscalls.master

Add rctl. It's used by racct to take user-configurable actions based

2011-03-30 17:48:15 +00:00

systrace_args.c

Regenerate.

2011-03-30 17:59:54 +00:00

sysv_ipc.c

Move SysV IPC freebsd32 compat shims helpers from freebsd32_misc.c to

2010-03-19 11:01:51 +00:00

sysv_msg.c

Add some FEATURE macros for various features (AUDIT/CAM/IPC/KTR/MAC/NFS/NTP/

2011-02-25 10:11:01 +00:00

sysv_sem.c

Add some FEATURE macros for various features (AUDIT/CAM/IPC/KTR/MAC/NFS/NTP/

2011-02-25 10:11:01 +00:00

sysv_shm.c

Add some FEATURE macros for various features (AUDIT/CAM/IPC/KTR/MAC/NFS/NTP/

2011-02-25 10:11:01 +00:00

tty_compat.c

Make TIOCSTI work again.

2010-01-04 20:59:52 +00:00

tty_info.c

…

tty_inq.c

Remove statistics from the TTY queues.

2010-02-07 15:42:15 +00:00

tty_outq.c

Remove statistics from the TTY queues.

2010-02-07 15:42:15 +00:00

tty_pts.c

Make "struct pts_softc" point to ucred instead of uidinfo. This is no-op,

2011-03-03 17:33:22 +00:00

tty_tty.c

Finish r210923, 210926. Mark some devices as eternal.

2011-01-04 10:59:38 +00:00

tty_ttydisc.c

Print backspaces after echoing an EOF.

2009-10-17 08:59:41 +00:00

tty.c

Finish r210923, 210926. Mark some devices as eternal.

2011-01-04 10:59:38 +00:00

uipc_accf.c

(S)LIST_HEAD_INITIALIZER takes a (S)LIST_HEAD as an argument.

2009-12-28 22:56:30 +00:00

uipc_cow.c

Add some FEATURE macros for various features (AUDIT/CAM/IPC/KTR/MAC/NFS/NTP/

2011-02-25 10:11:01 +00:00

uipc_debug.c

…

uipc_domain.c

…

uipc_mbuf2.c

Use ISO C99 integer types in sys/kern where possible.

2010-06-21 09:55:56 +00:00

uipc_mbuf.c

Fix typos - remove duplicate "the".

2011-02-21 09:01:34 +00:00

uipc_mqueue.c

Add some FEATURE macros for various features (AUDIT/CAM/IPC/KTR/MAC/NFS/NTP/

2011-02-25 10:11:01 +00:00

uipc_sem.c

Make the description of the feature consistent with another similar

2011-02-25 12:46:43 +00:00

uipc_shm.c

Replace pointer to "struct uidinfo" with pointer to "struct ucred"

2010-12-02 17:37:16 +00:00

uipc_sockbuf.c

…

uipc_socket.c

Mfp4 CH=177274,177280,177284-177285,177297,177324-177325

2011-02-16 21:29:13 +00:00

uipc_syscalls.c

Mfp4 CH=177274,177280,177284-177285,177297,177324-177325

2011-02-16 21:29:13 +00:00

uipc_usrreq.c

Mfp4 CH=177274,177280,177284-177285,177297,177324-177325

2011-02-16 21:29:13 +00:00

vfs_acl.c

The 'acl_cnt' field is unsigned; no point in checking if it's >= 0.

2010-06-03 13:45:27 +00:00

vfs_aio.c

Create a global thread hash table to speed up thread lookup, use

2010-10-09 02:50:23 +00:00

vfs_bio.c

Retire VFS_BIO_DEBUG. Convert those checks that were still valid into

2011-02-12 01:00:00 +00:00

vfs_cache.c

Fix some more style(9) issues.

2010-11-14 16:10:15 +00:00

vfs_cluster.c

The hardware has caught up; improvements are now observed even at 128,

2011-03-16 16:22:59 +00:00

vfs_default.c

If we read zero bytes from the directory, early out with ENOENT

2010-08-25 18:09:51 +00:00

vfs_export.c

Set the prison in NFS anon and GSS SVC creds.

2009-09-28 18:07:16 +00:00

vfs_extattr.c

Revert r210225 - turns out I was wrong; the "/*-" is not license-only

2010-07-18 20:57:53 +00:00

vfs_hash.c

…

vfs_init.c

…

vfs_lookup.c

Add an extra comment to the SDT probes definition. This allows us to get

2010-08-22 11:18:57 +00:00

vfs_mount.c

Fix some style issues in r219925.

2011-03-26 17:17:24 +00:00

vfs_mountroot.c

Make RB_CDROM work. This should probably check for a disc in cd1 and acd1

2011-01-08 19:50:13 +00:00

vfs_subr.c

Do not assert buffer lock in VFS_STRATEGY() when kernel already paniced.

2011-03-08 11:50:59 +00:00

vfs_syscalls.c

Add O_CLOEXEC flag to open(2) and fhopen(2).

2011-03-25 14:00:36 +00:00

vfs_vnops.c

Based on discussions on the svn-src mailing list, rework r218195:

2011-02-08 00:16:36 +00:00

vnode_if.src

Add VOP_ADVLOCKPURGE so that the file system is called when purging

2010-05-12 21:24:46 +00:00