David Xu 7de1ecef2d Add two commands to _umtx_op system call to allow a simple mutex to be ...

locked and unlocked completely in userland. by locking and unlocking mutex
in userland, it reduces the total time a mutex is locked by a thread,
in some application code, a mutex only protects a small piece of code, the
code's execution time is less than a simple system call, if a lock contention
happens, however in current implemenation, the lock holder has to extend its
locking time and enter kernel to unlock it, the change avoids this disadvantage,
it first sets mutex to free state and then enters kernel and wake one waiter
up. This improves performance dramatically in some sysbench mutex tests.

Tested by: kris
Sounds great: jeff

2008-06-24 07:32:12 +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

Go back to using the process command name (p_comm) for the file name and

2008-05-15 03:07:34 +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

Add code to allow the system to handle multiple routing tables.

2008-05-09 23:03:00 +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

Struct cdev is always the member of the struct cdev_priv. When devfs

2008-06-16 17:34:59 +00:00

kern_context.c

Further system call comment cleanup:

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

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

Take into account possible overflow when multiplying. The casuality is

2008-05-26 10:01:13 +00:00

kern_ctf.c

Add the CTF source file which gets shared with link_elf.c and link_elf_obj.c.

2008-05-23 03:04:27 +00:00

kern_descrip.c

Remove redundant checks from fcntl()'s F_DUPFD.

2008-05-28 20:25:19 +00:00

kern_dtrace.c

Remove code that isn't required. It actually breaks the case where KDTRACE_HOOKS

2008-06-16 04:44:29 +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

Kqueue_scan() may sleep when encountered the influx knotes. On the other

2008-05-10 11:37:05 +00:00

kern_exec.c

Add DTrace 'proc' provider probes using the Statically Defined Trace

2008-05-24 06:22:16 +00:00

kern_exit.c

Add DTrace 'proc' provider probes using the Statically Defined Trace

2008-05-24 06:22:16 +00:00

kern_fork.c

Add DTrace 'proc' provider probes using the Statically Defined Trace

2008-05-24 06:22:16 +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

Revert rev. 178124 as requested by kris@. Having jail id not being

2008-06-19 21:41:57 +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

Add the ctf_get function and update the args to linker_file_function_listall.

2008-05-23 07:08:59 +00:00

kern_lock.c

The "if" semantic is not needed, just fix this.

2008-05-25 16:11:27 +00:00

kern_lockf.c

When blocking on an F_FLOCK style lock request which is upgrading a

2008-05-09 10:34:23 +00:00

kern_malloc.c

Add support for the DTrace malloc provider which can enable probes

2008-05-23 00:43:36 +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

Add DTrace 'proc' provider probes using the Statically Defined Trace

2008-05-24 06:22:16 +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

Improve a comment which, in the actual CVS stock, doesn't completely

2008-05-27 00:27:50 +00:00

kern_sdt.c

Add kernel support for the Statically Defined Trace provider.

2008-05-18 19:32:36 +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 DTrace 'proc' provider probes using the Statically Defined Trace

2008-05-24 06:22:16 +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

fix typo in runz_fuzz

2008-05-12 06:42:06 +00:00

kern_sx.c

- Embed the recursion counter for any locking primitive directly in the

2008-05-15 20:10:06 +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

Add two commands to _umtx_op system call to allow a simple mutex to be

2008-06-24 07:32:12 +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

Enforce the mapping of kernel loadable modules in the uppermost 2GB of the

2008-06-20 06:24:34 +00:00

link_elf.c

Add hooks for the Compact C Type Format (CTF) data to be attached to

2008-05-23 00:49:39 +00:00

linker_if.m

Add the ctf_get method.

2008-05-23 04:06:49 +00:00

Make.tags.inc

Remove netatm from HEAD as it is not MPSAFE and relies on the now removed

2008-05-25 22:11:40 +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 the vtime (virtual time) hooks for DTrace.

2008-05-25 01:44:58 +00:00

sched_ule.c

Add the vtime (virtual time) hooks for DTrace.

2008-05-25 01:44:58 +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

Split out the probing magic of device_probe_and_attach into

2008-06-20 16:58:15 +00:00

subr_clist.c

Move TTY unrelated bits out of <sys/tty.h>.

2008-05-23 16:06:35 +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

- Embed the recursion counter for any locking primitive directly in the

2008-05-15 20:10:06 +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 HZ value via kern.hz sysctl (this is the same name as for the

2008-05-09 07:42:02 +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

Instead of doing comparisons using the pcpu area to see if

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

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

Complete removal of restriction about overlaps to rman_manage_region:

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

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

Allow a rendezvous with just a specified CPU too.

2008-05-23 04:05:26 +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

- Embed the recursion counter for any locking primitive directly in the

2008-05-15 20:10:06 +00:00

sys_generic.c

- Remove stale comment.

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

sys_pipe.c

Another problem caused by the knlist_cleardel() potentially dropping

2008-05-23 11:14:03 +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

Add code to allow the system to handle multiple routing tables.

2008-05-09 23:03:00 +00:00

syscalls.c

Add code to allow the system to handle multiple routing tables.

2008-05-09 23:03:00 +00:00

syscalls.master

Add code to allow the system to handle multiple routing tables.

2008-05-09 23:03:00 +00:00

systrace_args.c

Add code to allow the system to handle multiple routing tables.

2008-05-09 23:03:00 +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

Renew semaphore's pointer after wakeup since during msleep

2008-06-19 18:08:42 +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

Move TTY unrelated bits out of <sys/tty.h>.

2008-05-23 16:06:35 +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_tty.c

Remove unneeded Giant locking of /dev/tty.

2008-06-03 12:38:00 +00:00

tty.c

Rev. 1.274 put the ttyrel() call before the destroy_dev() in the

2008-05-23 16:47:55 +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

Remove the posixsem_check_destroy() MAC check. It is semantically identical

2008-06-23 21:37:53 +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

Update the kernel to count the number of mbufs and clusters

2008-05-15 20:18:44 +00:00

uipc_socket.c

Add code to allow the system to handle multiple routing tables.

2008-05-09 23:03:00 +00:00

uipc_syscalls.c

When sendto(2) is called with an explicit destination address

2008-05-22 07:18:54 +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 minimum of max_aio_procs and target_aio_procs when spawning new

2008-06-21 11:34:34 +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

Provide the mutual exclusion between the nfs export list modifications

2008-06-09 10:31:38 +00:00

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

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

Implement the linux syscalls

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

vfs_mount.c

Provide the mutual exclusion between the nfs export list modifications

2008-06-09 10:31:38 +00:00

vfs_subr.c

Be more friendly for DDB pager.

2008-05-18 21:08:12 +00:00

vfs_syscalls.c

If S_IFIFO is passed to mknod(2), invoke kern_mkfifoat(9) to create a

2008-06-22 21:51:32 +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