attilio 0ce490cd03 Add a new witness sysctl which returns the relations between any lock ...

and its children in the form:
"parent","child"
so that head and bottom of an oriented graph can be easilly detected and
various form of diagrams can be build.
The sysctl is called debug.witness.graphs and it is read-only; in order
to get the list of relations, a simple:
#sysctl debug.witness.graphs
will do the trick.

This approach has been choosen in order to support easilly things like
the DOT format and such.  Soon, an auto-explicative awk script, which
filters simple informations returned by the sysctl and converts them into
a real DOT script, will be committed to the repository between examples.

Discussed with:	rwatson

2008-05-07 21:41:36 +00:00

..

bus_if.m

Implement a BUS_BIND_INTR() method in the bus interface to bind an IRQ

2008-03-20 21:24:32 +00:00

clock_if.m

…

cpufreq_if.m

…

device_if.m

…

genassym.sh

refactor code so it can run in a chroot without having to have /dev/mounted

2008-01-18 17:02:14 +00:00

imgact_aout.c

VOP_LOCK1() (and so VOP_LOCK()) and VOP_UNLOCK() are only used in

2008-01-13 14:44:15 +00:00

imgact_elf32.c

…

imgact_elf64.c

…

imgact_elf.c

Remove kernel support for M:N threading.

2008-03-12 10:12:01 +00:00

imgact_gzip.c

VOP_LOCK1() (and so VOP_LOCK()) and VOP_UNLOCK() are only used in

2008-01-13 14:44:15 +00:00

imgact_shell.c

…

inflate.c

…

init_main.c

In keeping with style(9)'s recommendations on macros, use a ';'

2008-03-16 10:58:09 +00:00

init_sysent.c

Regen

2008-03-31 12:12:27 +00:00

kern_acct.c

VOP_LOCK1() (and so VOP_LOCK()) and VOP_UNLOCK() are only used in

2008-01-13 14:44:15 +00:00

kern_alq.c

In keeping with style(9)'s recommendations on macros, use a ';'

2008-03-16 10:58:09 +00:00

kern_clock.c

Implement per-cpu callout threads, wheels, and locks.

2008-04-02 11:20:30 +00:00

kern_condvar.c

- Pass the priority argument from *sleep() into sleepq and down into

2008-03-12 06:31:06 +00:00

kern_conf.c

Add two missed chunks from the rev. 1.210, for the giant_read() and

2008-04-02 11:11:58 +00:00

kern_context.c

…

kern_cpu.c

Fix a few edge cases with error handling in cpufreq(4)'s CPUFREQ_GET()

2008-05-05 19:13:52 +00:00

kern_cpuset.c

- Add the interrupt vector number to intr_event_create so MI code can

2008-04-11 03:26:41 +00:00

kern_descrip.c

* Correct a mis-merge that leaked the PROC_LOCK [1]

2008-04-26 13:16:55 +00:00

kern_environment.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

kern_event.c

- Convert two timeout users to the new callout_reset_curcpu() api.

2008-04-02 11:21:42 +00:00

kern_exec.c

Implement the fexecve(2) syscall.

2008-03-31 12:05:52 +00:00

kern_exit.c

In abort2(2): Accept a NULL arg pointer if nargs == 0

2008-03-22 16:32:52 +00:00

kern_fork.c

Fix the leak of the vmspace on the fork when the process limits

2008-03-20 15:24:49 +00:00

kern_idle.c

In keeping with style(9)'s recommendations on macros, use a ';'

2008-03-16 10:58:09 +00:00

kern_intr.c

- Make SCHED_STATS more generic by adding a wrapper to create the

2008-04-17 04:20:10 +00:00

kern_jail.c

Instead of rolling our own jail number allocation procedure, use

2008-04-11 21:31:15 +00:00

kern_kthread.c

Document the kproc_kthread_add() call

2008-04-29 22:43:15 +00:00

kern_ktr.c

…

kern_ktrace.c

This patch adds a new ktrace(2) record type, KTR_STRUCT, whose payload

2008-02-23 01:01:49 +00:00

kern_linker.c

Back-out previous revision. For now I can use _ddb() variants of stack(9) KPI,

2008-04-21 17:22:35 +00:00

kern_lock.c

Use a "rel" memory barrier for disowning the lock as it cames from an

2008-04-13 01:21:56 +00:00

kern_lockf.c

Fix compilation with LOCKF_DEBUG.

2008-04-16 14:08:12 +00:00

kern_malloc.c

In keeping with style(9)'s recommendations on macros, use a ';'

2008-03-16 10:58:09 +00:00

kern_mbuf.c

Reintroduce UMA_SLAB_KMAP; however, change its spelling to

2008-04-04 18:41:12 +00:00

kern_mib.c

Make sysctl_kern_arnd return a random buffer instead of a random long,

2008-02-17 16:44:48 +00:00

kern_module.c

In keeping with style(9)'s recommendations on macros, use a ';'

2008-03-16 10:58:09 +00:00

kern_mtxpool.c

Universally adopt most conventional spelling of acquire.

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

kern_mutex.c

Add KASSERT()'s to catch attempts to recurse on spin mutexes that aren't

2008-02-13 23:39:05 +00:00

kern_ntptime.c

In keeping with style(9)'s recommendations on macros, use a ';'

2008-03-16 10:58:09 +00:00

kern_physio.c

…

kern_pmc.c

Kernel and hwpmc(4) support for callchain capture.

2007-12-07 08:20:17 +00:00

kern_poll.c

In keeping with style(9)'s recommendations on macros, use a ';'

2008-03-16 10:58:09 +00:00

kern_priv.c

Add __FBSDID() tag.

2008-03-07 15:27:08 +00:00

kern_proc.c

- Relax requirements for p_numthreads, p_threads, p_swtick, and p_nice from

2008-03-19 06:19:01 +00:00

kern_prot.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

kern_resource.c

Remove extra uihold() call that accidentally sneak in during perforce

2008-03-19 07:52:07 +00:00

kern_rmlock.c

Expand lock class with the "virtual" function lc_assert which will offer

2007-11-18 14:43:53 +00:00

kern_rwlock.c

- Add sysctls at debug.rwlock to control the behavior of the speculative

2008-04-04 10:00:46 +00:00

kern_sema.c

…

kern_shutdown.c

In keeping with style(9)'s recommendations on macros, use a ';'

2008-03-16 10:58:09 +00:00

kern_sig.c

- Add a new td flag TDF_NEEDSUSPCHK that is set whenever a thread needs

2008-03-21 08:23:25 +00:00

kern_subr.c

- Make SCHED_STATS more generic by adding a wrapper to create the

2008-04-17 04:20:10 +00:00

kern_switch.c

- Make SCHED_STATS more generic by adding a wrapper to create the

2008-04-17 04:20:10 +00:00

kern_sx.c

- Pass the priority argument from *sleep() into sleepq and down into

2008-03-12 06:31:06 +00:00

kern_synch.c

- Make SCHED_STATS more generic by adding a wrapper to create the

2008-04-17 04:20:10 +00:00

kern_syscalls.c

…

kern_sysctl.c

Add sysctl_rename_oid() to support device_set_unit() usage. Otherwise,

2007-11-30 21:29:08 +00:00

kern_tc.c

In keeping with style(9)'s recommendations on macros, use a ';'

2008-03-16 10:58:09 +00:00

kern_thr.c

Fix compiling problem.

2008-04-29 05:48:05 +00:00

kern_thread.c

- Make SCHED_STATS more generic by adding a wrapper to create the

2008-04-17 04:20:10 +00:00

kern_time.c

Make sure reading td_runtime in critical section since thread may be

2008-01-18 13:00:28 +00:00

kern_timeout.c

- Correct a major error introduced in the per-cpu timeout commit. Sleep

2008-04-06 11:08:49 +00:00

kern_umtx.c

Introduce command UMTX_OP_WAIT_UINT_PRIVATE and UMTX_OP_WAKE_PRIVATE

2008-04-29 03:48:48 +00:00

kern_uuid.c

…

kern_xxx.c

…

ksched.c

Commit 14/14 of sched_lock decomposition.

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

link_elf_obj.c

Fix panic on e.g. "kldload /dev/null".

2008-03-15 17:40:18 +00:00

link_elf.c

Fix panic on e.g. "kldload /dev/null".

2008-03-15 17:40:18 +00:00

linker_if.m

Add a function to list symbols in a file and their values at the

2007-11-18 00:23:31 +00:00

Make.tags.inc

Remove netkey directory from cscope/TAGs generation and replace

2007-07-05 08:55:14 +00:00

Makefile

style.Makefile(5)

2007-12-14 21:30:51 +00:00

makesyscalls.sh

Generate another function for the DTrace syscall provider to specify

2008-03-27 01:53:44 +00:00

md4c.c

…

md5c.c

…

p1003_1b.c

Remove kernel support for M:N threading.

2008-03-12 10:12:01 +00:00

posix4_mib.c

…

sched_4bsd.c

- Add an integer argument to idle to indicate how likely we are to wake

2008-04-25 05:18:50 +00:00

sched_ule.c

- Add an integer argument to idle to indicate how likely we are to wake

2008-04-25 05:18:50 +00:00

serdev_if.m

…

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

In keeping with style(9)'s recommendations on macros, use a ';'

2008-03-16 10:58:09 +00:00

subr_blist.c

add malloc flag to blist so that it can be used in ithread context

2008-05-05 19:48:54 +00:00

subr_bus.c

Implement a BUS_BIND_INTR() method in the bus interface to bind an IRQ

2008-03-20 21:24:32 +00:00

subr_clist.c

In keeping with style(9)'s recommendations on macros, use a ';'

2008-03-16 10:58:09 +00:00

subr_clock.c

Now that all platforms use genclock, shuffle things around slightly

2008-04-22 19:38:30 +00:00

subr_devstat.c

…

subr_disk.c

…

subr_eventhandler.c

In keeping with style(9)'s recommendations on macros, use a ';'

2008-03-16 10:58:09 +00:00

subr_fattime.c

…

subr_firmware.c

Do image loading in a context known to have a root directory:

2008-04-09 19:07:48 +00:00

subr_hints.c

…

subr_kdb.c

Expand kdb_alt_break a little, most commonly used with the option

2008-05-04 23:29:38 +00:00

subr_kobj.c

…

subr_lock.c

Really, no explicit checks against against lock_class_* object should be

2008-02-06 00:04:09 +00:00

subr_log.c

In keeping with style(9)'s recommendations on macros, use a ';'

2008-03-16 10:58:09 +00:00

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

Replaced the misleading uses of a historical artefact M_TRYWAIT with M_WAIT.

2008-03-25 09:39:02 +00:00

subr_module.c

…

subr_msgbuf.c

…

subr_param.c

Export maxswzone, maxbcache, maxtsiz, dfldsiz, maxdsiz, dflssiz, maxssiz,

2007-10-16 10:40:53 +00:00

subr_pcpu.c

generally we are interested in what thread did something as

2007-11-14 06:21:24 +00:00

subr_power.c

…

subr_prf.c

…

subr_prof.c

In keeping with style(9)'s recommendations on macros, use a ';'

2008-03-16 10:58:09 +00:00

subr_rman.c

…

subr_rtc.c

Now that all platforms use genclock, shuffle things around slightly

2008-04-22 19:38:30 +00:00

subr_sbuf.c

…

subr_scanf.c

…

subr_sleepqueue.c

- Make SCHED_STATS more generic by adding a wrapper to create the

2008-04-17 04:20:10 +00:00

subr_smp.c

In keeping with style(9)'s recommendations on macros, use a ';'

2008-03-16 10:58:09 +00:00

subr_stack.c

When a symbol name can't be resolved, return "??" as the name, rather

2007-12-03 14:44:35 +00:00

subr_taskqueue.c

Use kthread_exit() to terminate a taskqueue thread rather than kproc_exit()

2008-04-11 17:35:54 +00:00

subr_trap.c

- Make SCHED_STATS more generic by adding a wrapper to create the

2008-04-17 04:20:10 +00:00

subr_turnstile.c

- Make SCHED_STATS more generic by adding a wrapper to create the

2008-04-17 04:20:10 +00:00

subr_unit.c

Since cdev mutex is after system map mutex in global lock order, free()

2007-07-04 06:56:58 +00:00

subr_witness.c

Add a new witness sysctl which returns the relations between any lock

2008-05-07 21:41:36 +00:00

sys_generic.c

- Remove stale comment.

2008-03-19 07:33:16 +00:00

sys_pipe.c

Make ftruncate a 'struct file' operation rather than a vnode operation.

2008-01-07 20:05:19 +00:00

sys_process.c

- Relax requirements for p_numthreads, p_threads, p_swtick, and p_nice from

2008-03-19 06:19:01 +00:00

sys_socket.c

Make ftruncate a 'struct file' operation rather than a vnode operation.

2008-01-07 20:05:19 +00:00

syscalls.c

Regen

2008-03-31 12:12:27 +00:00

syscalls.master

Add the openat(), fexecve() and other *at() syscalls to the table.

2008-03-31 12:06:55 +00:00

systrace_args.c

Regen

2008-03-31 12:12:27 +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

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

sysv_sem.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

sysv_shm.c

Make sure we restrict Linux only IPC calls from being executed

2008-02-12 20:55:03 +00:00

tty_compat.c

…

tty_conf.c

…

tty_cons.c

The "free-lance" timer in the i8254 is only used for the speaker

2008-03-26 20:09:21 +00:00

tty_pts.c

In keeping with style(9)'s recommendations on macros, use a ';'

2008-03-16 10:58:09 +00:00

tty_pty.c

In keeping with style(9)'s recommendations on macros, use a ';'

2008-03-16 10:58:09 +00:00

tty_subr.c

In keeping with style(9)'s recommendations on macros, use a ';'

2008-03-16 10:58:09 +00:00

tty_tty.c

In keeping with style(9)'s recommendations on macros, use a ';'

2008-03-16 10:58:09 +00:00

tty.c

Implement POSIX function tcgetsid() which returns session id.

2008-04-15 08:33:32 +00:00

uipc_accf.c

…

uipc_cow.c

Give MEXTADD() another argument to make both void pointers to the

2008-02-01 19:36:27 +00:00

uipc_debug.c

Add missing sb_sndptr* fields to db_print_sockbuf().

2008-01-03 15:19:31 +00:00

uipc_domain.c

In keeping with style(9)'s recommendations on macros, use a ';'

2008-03-16 10:58:09 +00:00

uipc_mbuf2.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

uipc_mbuf.c

Attempt to make the print types more friendly to other architectures.

2008-04-30 20:00:30 +00:00

uipc_mqueue.c

- Use vget() to lock the vnode rather than refing without a lock and

2008-03-29 23:30:40 +00:00

uipc_sem.c

Free MAC label on a POSIX semaphore when the semaphore is freed.

2008-01-07 22:03:19 +00:00

uipc_shm.c

Initialize the vm object's flags to include OBJ_NOSPLIT, just like the

2008-04-13 21:08:34 +00:00

uipc_sockbuf.c

Further clean up sorflush:

2008-02-04 12:25:13 +00:00

uipc_socket.c

Add pru_flush routine so a transport can

2008-04-14 18:06:04 +00:00

uipc_syscalls.c

When writing trailers in sendfile(2), don't call kern_writev()

2008-04-27 15:50:00 +00:00

uipc_usrreq.c

Move unlock of global UNIX domain socket lock slightly lower in

2008-01-18 19:16:03 +00:00

vfs_acl.c

Add the support for the AT_FDCWD and fd-relative name lookups to the

2008-03-31 12:01:21 +00:00

vfs_aio.c

Use FEATURE() macro to advertise aio availability.

2008-02-01 11:59:14 +00:00

vfs_bio.c

b_waiters cannot be adequately protected by the interlock because it is

2008-03-28 12:30:12 +00:00

vfs_cache.c

- Use LK_TYPE_MASK where needed. Actually after sys/sys/lockmgr.h:1.69 it is

2008-04-09 20:19:55 +00:00

vfs_cluster.c

- Complete part of the unfinished bufobj work by consistently using

2008-03-22 09:15:16 +00:00

vfs_default.c

Move the head of byte-level advisory lock list from the

2008-04-16 11:33:32 +00:00

vfs_export.c

…

vfs_extattr.c

Add the support for the AT_FDCWD and fd-relative name lookups to the

2008-03-31 12:01:21 +00:00

vfs_hash.c

In keeping with style(9)'s recommendations on macros, use a ';'

2008-03-16 10:58:09 +00:00

vfs_init.c

…

vfs_lookup.c

Implement the linux syscalls

2008-04-08 09:45:49 +00:00

vfs_mount.c

Lock filedesc exclusively when modifying fd_[cr]dir.

2008-04-29 21:40:11 +00:00

vfs_subr.c

sync_vnode() has some messy code about locking in order to deal with

2008-05-04 13:54:55 +00:00

vfs_syscalls.c

vfs_syscalls.c 1.452 mistakenly swapped the behavior of chown() and lchown().

2008-04-07 00:29:32 +00:00

vfs_vnops.c

Add the support for the O_EXEC open(2) mode, as specified by the

2008-03-31 11:57:18 +00:00

vnode_if.src

Add the new kernel-mode NFS Lock Manager. To use it instead of the

2008-03-26 15:23:12 +00:00