jhb 7e42aad088 Tweak witness handling of lock object to shave 2 pointers off of each ...

lock object (and thus off of each mutex and sx lock):
- Rename the all_locks list to pending_locks and only put locks initialized
  before SI_SUB_WITNESS on the list so that the SI_SUB_WITNESS can add them
  to witness once it starts up.
- Now that pending_locks is only used during early startup, change it from
  a TAILQ to an STAILQ.  This removes a pointer from the STAILQ_ENTRY in
  struct lock_object.
- Since the pending_locks list is only used during the single-threaded
  early boot it no longer needs to be protected by a mutex, so remove
  all_mtx.
- Since the lo_list member of struct lock_object is now only used during
  early boot before witness is running, collapse lo_list and lo_witness
  into a union.  This shaves the second pointer off of struct lock_object.
- Axe lock_cur_cnt and lock_max_cnt.

With these changes, struct mtx shrinks from 36 to 28 bytes on 32-bit
platforms and from 72 to 56 bytes on 64-bit platforms.  Note that this
commit will completely and utterly destroy the kernel ABI, so no MFC.

Tested on:	alpha, amd64, i386, sparc64

2005-12-05 20:45:24 +00:00

..

bus_if.m

/* -> /*- for copyright notices, minor format tweaks as necessary

2005-01-06 23:35:40 +00:00

clock_if.m

/* -> /*- for copyright notices, minor format tweaks as necessary

2005-01-06 23:35:40 +00:00

cpufreq_if.m

Introduce a new method, cpufreq_drv_type(), that returns the type of the

2005-02-18 00:23:36 +00:00

device_if.m

/* -> /*- for copyright notices, minor format tweaks as necessary

2005-01-06 23:35:40 +00:00

genassym.sh

…

imgact_aout.c

- Neither of our image formats require Giant now that the vm and vfs have

2005-05-03 10:51:38 +00:00

imgact_elf32.c

…

imgact_elf64.c

…

imgact_elf.c

Add a new sysctl, kern.elf[32|64].can_exec_dyn. When set to 1, one can

2005-11-14 22:24:00 +00:00

imgact_gzip.c

- Change the vm_mmap() function to accept an objtype_t parameter specifying

2005-04-01 20:00:11 +00:00

imgact_shell.c

Fix a panic which could occur parsing #!-lines in a shell-script. If the

2005-06-19 02:21:03 +00:00

inflate.c

Normalize a significant number of kernel malloc type names:

2005-10-31 15:41:29 +00:00

init_main.c

Moderate rewrite of kernel ktrace code to attempt to generally improve

2005-11-13 13:27:44 +00:00

init_sysent.c

Regen.

2005-11-27 01:23:31 +00:00

kern_acct.c

Significant refactoring of the accounting code to improve locking and VFS

2005-11-12 10:45:13 +00:00

kern_acl.c

Implement new world order in VFS locking for ACLs. This will remove the

2005-09-17 22:01:14 +00:00

kern_alq.c

Modify the alq(9) alq_open() API to accept a file creation mode, rather

2005-04-16 12:12:27 +00:00

kern_clock.c

In watchdog_config enable the software watchdog iff the WD_ACTIVE flag is

2005-10-27 17:22:47 +00:00

kern_condvar.c

…

kern_conf.c

Move the initialization of the devmtx into the mutex_init() function

2005-10-18 18:27:44 +00:00

kern_context.c

…

kern_cpu.c

make saved cpu level stackable.

2005-10-03 06:57:29 +00:00

kern_descrip.c

Last step to make mq_notify conform to POSIX standard, If the process

2005-11-30 05:12:03 +00:00

kern_environment.c

Reorder statements to avoid accessing unknown memory.

2005-09-26 14:14:55 +00:00

kern_event.c

Add in kqueue support to LIO event notification and fix how it handled

2005-10-12 17:51:31 +00:00

kern_exec.c

Cleanup some signal interfaces. Now the tdsignal function accepts

2005-11-03 04:49:16 +00:00

kern_exit.c

Moderate rewrite of kernel ktrace code to attempt to generally improve

2005-11-13 13:27:44 +00:00

kern_fork.c

Moderate rewrite of kernel ktrace code to attempt to generally improve

2005-11-13 13:27:44 +00:00

kern_idle.c

Divorce critical sections from spinlocks. Critical sections as denoted by

2005-04-04 21:53:56 +00:00

kern_intr.c

Add a swi_remove() function to teardown software interrupt handlers. For

2005-10-26 15:51:05 +00:00

kern_jail.c

Push Giant down in jails. Pass the MPSAFE flag to NDINIT, and keep track

2005-09-28 00:30:56 +00:00

kern_kse.c

Cleanup some signal interfaces. Now the tdsignal function accepts

2005-11-03 04:49:16 +00:00

kern_kthread.c

/* -> /*- for copyright notices, minor format tweaks as necessary

2005-01-06 23:35:40 +00:00

kern_ktr.c

- Add curthread to the state that ktr is saving. The extra information is

2005-06-10 23:21:29 +00:00

kern_ktrace.c

In ktr_getrequest(), acquire ktrace_mtx earlier -- while the race

2005-11-14 19:30:09 +00:00

kern_linker.c

Fix a bug in the kernel module runtime linker that made it impossible

2005-10-19 20:40:30 +00:00

kern_lock.c

Include kdb.h so that kdb_active is declared regardless of KDB being

2005-10-02 10:03:51 +00:00

kern_lockf.c

Print name of device instead of useless major/minor numbers.

2005-03-29 08:13:01 +00:00

kern_mac.c

Standard Giant push down operations for the Mandatory Access Control (MAC)

2005-10-04 14:32:58 +00:00

kern_malloc.c

Detect memory leaks when memory type is being destroyed.

2005-11-03 13:48:59 +00:00

kern_mbuf.c

Fix panic string in last revision.

2005-11-06 16:47:59 +00:00

kern_mib.c

mp_ncpus is always (properly) initialized, even on UP kernels, so just use it.

2005-08-21 18:03:31 +00:00

kern_module.c

Swap the arguments for CP so we copy the correct source and

2005-02-18 22:14:40 +00:00

kern_mtxpool.c

Make a bunch of malloc types static.

2005-02-10 12:02:37 +00:00

kern_mutex.c

Move the initialization of the devmtx into the mutex_init() function

2005-10-18 18:27:44 +00:00

kern_ntptime.c

Explicitly acquire Giant around the ntp_gettime() and assert it in the

2005-05-28 14:34:41 +00:00

kern_physio.c

/* -> /*- for copyright notices, minor format tweaks as necessary

2005-01-06 23:35:40 +00:00

kern_pmc.c

Fix -Wundef.

2005-12-04 02:12:43 +00:00

kern_poll.c

- Don't pollute opt_global.h with DEVICE_POLLING and introduce

2005-10-05 10:09:17 +00:00

kern_proc.c

Moderate rewrite of kernel ktrace code to attempt to generally improve

2005-11-13 13:27:44 +00:00

kern_prot.c

Use the refcount API to manage the reference count for user credentials

2005-09-27 18:09:42 +00:00

kern_resource.c

Calling setrlimit from 32bit apps could potentially increase certain

2005-11-02 21:18:07 +00:00

kern_sema.c

/* -> /*- for copyright notices, minor format tweaks as necessary

2005-01-06 23:35:40 +00:00

kern_shutdown.c

Don't pretend to be thread0 when calling sync().

2005-09-22 15:34:15 +00:00

kern_sig.c

set signal queue values for sysconf().

2005-12-01 00:25:50 +00:00

kern_subr.c

/* -> /*- for copyright notices, minor format tweaks as necessary

2005-01-06 23:35:40 +00:00

kern_switch.c

In adjustrunqueue(), add code to handle thread migrating case for

2005-08-03 01:23:45 +00:00

kern_sx.c

/* -> /*- for copyright notices, minor format tweaks as necessary

2005-01-06 23:35:40 +00:00

kern_synch.c

When checking to see if a process has exceeded its time limit, flag the

2005-11-28 19:09:08 +00:00

kern_syscalls.c

…

kern_sysctl.c

Drop in a WITNESS_WARN into SYSCTL_IN to make sure that we are

2005-08-08 21:06:42 +00:00

kern_tc.c

Start time_uptime with 1 instead of 0.

2005-09-19 22:16:31 +00:00

kern_thr.c

Cleanup some signal interfaces. Now the tdsignal function accepts

2005-11-03 04:49:16 +00:00

kern_thread.c

Last step to make mq_notify conform to POSIX standard, If the process

2005-11-30 05:12:03 +00:00

kern_time.c

1. Set timer configuration values for sysconf().

2005-12-01 07:56:15 +00:00

kern_timeout.c

Oops, missed adding the required include.

2005-09-15 20:20:36 +00:00

kern_umtx.c

do umtx_wake at userland thread exit address, so that others userland

2005-10-26 06:55:46 +00:00

kern_uuid.c

Add parse_uuid() that creates a binary representation of an UUID from

2005-10-07 13:37:10 +00:00

kern_xxx.c

/* -> /*- for copyright notices, minor format tweaks as necessary

2005-01-06 23:35:40 +00:00

ksched.c

/* -> /*- for license, minor formatting changes

2005-01-07 02:29:27 +00:00

link_elf_obj.c

Handle vm_map_wire()'s failure.

2005-08-28 05:38:40 +00:00

link_elf.c

Check to see if the hash table is present in link_elf_lookup_symbol()

2005-10-31 19:17:32 +00:00

linker_if.m

/* -> /*- for copyright notices, minor format tweaks as necessary

2005-01-06 23:35:40 +00:00

Make.tags.inc

…

Makefile

Add a 'sysent' target that depends on the various files built from

2005-07-13 20:50:17 +00:00

makesyscalls.sh

Introduce a new field in the syscalls.master file format to hold the

2005-05-30 15:09:18 +00:00

md4c.c

/* -> /*- for copyright notices, minor format tweaks as necessary

2005-01-06 23:35:40 +00:00

md5c.c

MD5Pad() should never have been exposed.

2005-02-10 12:20:42 +00:00

p1003_1b.c

Actually commit the code for kern_sched_get_rr_interval().

2005-03-31 22:54:48 +00:00

posix4_mib.c

…

sched_4bsd.c

Move HWPMC_HOOKS into its own opt_hwpmc_hooks.h file. It doesn't merit

2005-06-24 00:16:57 +00:00

sched_ule.c

Temporarily disable nice threshold detection code, as it can starve

2005-09-22 01:19:37 +00:00

subr_acl_posix1e.c

Implement new world order in VFS locking for ACLs. This will remove the

2005-09-17 22:01:14 +00:00

subr_autoconf.c

/* -> /*- for copyright notices, minor format tweaks as necessary

2005-01-06 23:35:40 +00:00

subr_blist.c

…

subr_bus.c

When data passed into devctl_notify is NULL, don't print (null). Instead

2005-10-04 22:25:14 +00:00

subr_clist.c

/* -> /*- for copyright notices, minor format tweaks as necessary

2005-01-06 23:35:40 +00:00

subr_clock.c

/* -> /*- for copyright notices, minor format tweaks as necessary

2005-01-06 23:35:40 +00:00

subr_devstat.c

- Remove two mtx_asserts that can incorrectly trigger if

2005-05-03 10:58:05 +00:00

subr_disk.c

- Fix insertions of bios which represent data earlier than anything else

2005-06-15 23:32:07 +00:00

subr_eventhandler.c

eliminate potential null deref

2005-02-23 19:32:29 +00:00

subr_hints.c

The resource_xxx routines in subr_hints.c are called before and after the

2005-07-31 10:46:55 +00:00

subr_kdb.c

Add stoppcbs[] arrays on Alpha and sparc64 and have each CPU save its

2005-11-03 21:08:20 +00:00

subr_kobj.c

Export a routine, kobj_machdep_init(), that allows platforms

2005-08-07 02:20:35 +00:00

subr_log.c

Use dynamic major number allocation.

2005-02-27 22:02:03 +00:00

subr_mbpool.c

/* -> /*- for copyright notices, minor format tweaks as necessary

2005-01-06 23:35:40 +00:00

subr_mchain.c

Change API of mb_copy_t in libmchain so that netsmb can handle

2005-07-29 13:22:37 +00:00

subr_module.c

…

subr_msgbuf.c

/* -> /*- for copyright notices, minor format tweaks as necessary

2005-01-06 23:35:40 +00:00

subr_param.c

Partially revert revision 1.66, which contained a change that did not

2005-10-14 19:15:10 +00:00

subr_pcpu.c

Fix 'show allpcpu' ddb command on non-x86. CPU IDs are in the range 0 ..

2005-11-03 21:06:29 +00:00

subr_power.c

General consensus is that it would be even better to run this in a

2005-11-09 16:22:56 +00:00

subr_prf.c

Acquire Giant in uprintf() and tprintf() rather than asserting it. In

2005-09-26 08:02:24 +00:00

subr_prof.c

netchild's mega-patch to isolate compiler dependencies into a central

2005-03-02 21:33:29 +00:00

subr_rman.c

Prefer NULL to 0.

2005-11-17 08:56:21 +00:00

subr_rtc.c

/* -> /*- for copyright notices, minor format tweaks as necessary

2005-01-06 23:35:40 +00:00

subr_sbuf.c

Make a bunch of malloc types static.

2005-02-10 12:02:37 +00:00

subr_scanf.c

…

subr_sleepqueue.c

Clarify panic message, I parsed the old one 'trying to sleep while sleeping'

2005-11-09 07:28:52 +00:00

subr_smp.c

Rename the KDB_STOP_NMI kernel option to STOP_NMI and make it apply to all

2005-10-24 21:04:19 +00:00

subr_stack.c

Add 'depth' argument to CTRSTACK() macro, which allows to reduce number

2005-08-29 11:34:08 +00:00

subr_taskqueue.c

Use shorter names for the Giant and fast taskqueues so that their names

2005-10-25 19:29:02 +00:00

subr_trap.c

Moderate rewrite of kernel ktrace code to attempt to generally improve

2005-11-13 13:27:44 +00:00

subr_turnstile.c

Trim a couple of unneeded includes.

2005-09-29 19:13:52 +00:00

subr_unit.c

Remove debugging printfs.

2005-03-14 06:51:29 +00:00

subr_witness.c

Tweak witness handling of lock object to shave 2 pointers off of each

2005-12-05 20:45:24 +00:00

sys_generic.c

- Add two new system calls: preadv() and pwritev() which are like readv()

2005-07-07 18:17:55 +00:00

sys_pipe.c

Fix the recent panics/LORs/hangs created by my kqueue commit by:

2005-07-01 16:28:32 +00:00

sys_process.c

Make sure pending SIGCHLD is removed from previous parent when process

2005-11-08 23:28:12 +00:00

sys_socket.c

Introduce three additional MAC Framework and MAC Policy entry points to

2005-04-16 18:46:29 +00:00

syscalls.c

Regen.

2005-11-27 01:23:31 +00:00

syscalls.master

Don't use OpenBSD syscall numbers, instead, use new syscall numbers

2005-11-27 01:13:00 +00:00

sysv_ipc.c

/* -> /*- for copyright notices, minor format tweaks as necessary

2005-01-06 23:35:40 +00:00

sysv_msg.c

Add much needed descriptions for a number of the IPC related sysctl OIDs.

2005-02-12 01:22:39 +00:00

sysv_sem.c

Gratuitous renaming of four System V Semaphore MAC Framework entry

2005-06-07 05:03:28 +00:00

sysv_shm.c

Re-order MAC and DAC checks in shmget() in order to give precedence to

2005-10-04 16:40:20 +00:00

tty_compat.c

Make ttsetcompat() static

2005-10-16 20:40:40 +00:00

tty_conf.c

…

tty_cons.c

Use dynamic major number allocation for /dev/console, there is no

2005-02-27 21:52:42 +00:00

tty_pty.c

Merge the dev_clone and dev_clone_cred event handlers into a single

2005-08-08 19:55:32 +00:00

tty_subr.c

/* -> /*- for copyright notices, minor format tweaks as necessary

2005-01-06 23:35:40 +00:00

tty_tty.c

Merge the dev_clone and dev_clone_cred event handlers into a single

2005-08-08 19:55:32 +00:00

tty.c

Revert most of revision 1.235 and fix the problem a different way. We

2005-10-27 16:47:28 +00:00

uipc_accf.c

o setsockopt(2) cannot remove accept filter. [1]

2005-06-11 11:59:48 +00:00

uipc_cow.c

Previously, nothing prevented the page that was returned by pmap_extract()

2005-10-23 07:41:56 +00:00

uipc_domain.c

/* -> /*- for copyright notices, minor format tweaks as necessary

2005-01-06 23:35:40 +00:00

uipc_mbuf2.c

Define four constants, MBUF_{,MEM,CLUSTER,PACKET,TAG}_MEM_NAME, which

2005-07-17 14:04:03 +00:00

uipc_mbuf.c

Free only those mbuf+clusters back to the packet zone that were allocated

2005-11-05 19:43:55 +00:00

uipc_mqueue.c

After reading some documents, I realized SIGEV_NONE != NULL, also

2005-12-05 04:41:32 +00:00

uipc_proto.c

Use sparse initializers for "struct domain" and "struct protosw",

2005-11-09 13:29:16 +00:00

uipc_sem.c

Const-qualify ksem_timedwait's parameter abstime as it's only passed in.

2005-10-18 11:46:24 +00:00

uipc_sockbuf.c

Fix a bug in the loop in sonewconn that makes room on the incomplete

2005-11-22 01:55:29 +00:00

uipc_socket2.c

Fix a bug in the loop in sonewconn that makes room on the incomplete

2005-11-22 01:55:29 +00:00

uipc_socket.c

Fix snderr() to not leak the socket buffer lock if an error occurs in

2005-11-29 23:07:14 +00:00

uipc_syscalls.c

Reformat socket control messages on input/output for 32bit compatibility

2005-10-31 21:09:56 +00:00

uipc_usrreq.c

Correct a number of serious and closely related bugs in the UNIX domain

2005-11-10 16:06:04 +00:00

vfs_acl.c

Implement new world order in VFS locking for ACLs. This will remove the

2005-09-17 22:01:14 +00:00

vfs_aio.c

In aio_waitcomplete, do not return EAGAIN if no other threads

2005-11-08 23:48:32 +00:00

vfs_bio.c

Normalize a significant number of kernel malloc type names:

2005-10-31 15:41:29 +00:00

vfs_cache.c

- Fix a leaked reference to a vnode via v_dd. We rely on cache_purge() and

2005-06-17 01:05:13 +00:00

vfs_cluster.c

Normalize a significant number of kernel malloc type names:

2005-10-31 15:41:29 +00:00

vfs_default.c

In vop_stdpathconf(ap) also default for _PC_NAME_MAX and _PC_PATH_MAX.

2005-08-17 06:59:23 +00:00

vfs_export.c

Normalize a significant number of kernel malloc type names:

2005-10-31 15:41:29 +00:00

vfs_extattr.c

Implement new world order in VFS locking for extended attributes. This will

2005-09-24 23:47:04 +00:00

vfs_hash.c

Normalize a significant number of kernel malloc type names:

2005-10-31 15:41:29 +00:00

vfs_init.c

Remove VFS_START(). Its original purpose involved the mfs filesystem,

2005-02-20 23:02:20 +00:00

vfs_lookup.c

Use correct VFS locking rather than unconditionally grabbing Giant around

2005-09-21 19:49:42 +00:00

vfs_mount.c

Add "rdonly" to global_opts, and parse it in vfs_donmount().

2005-12-03 12:04:20 +00:00

vfs_subr.c

This is a workaround for a complicated issue involving VFS cookies and devfs.

2005-11-09 22:03:50 +00:00

vfs_syscalls.c

Implement new world order in VFS locking for extended attributes. This will

2005-09-24 23:47:04 +00:00

vfs_vnops.c

- Replace the series of DEBUG_LOCKS hacks which tried to save the vn_lock

2005-08-03 04:48:22 +00:00

vnode_if.src

Allow EVFILT_VNODE events to work on every filesystem type, not just

2005-06-09 20:20:31 +00:00