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f6dd5c15fd
freebsd-nq/sys/kern
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Ed Schouten f6dd5c15fd Import some improvements to the TTY code from the MPSAFE TTY branch. 
- Change the ddb(4) commands to be more useful (by thompsa@):
  - `show ttys' is now called `show all ttys'. This command will now
    also display the address where the TTY data structure resides.
  - Add `show tty <addr>', which dumps the TTY in a readable form.

- Place an upper bound on the TTY buffer sizes. Some drivers do not want
  to care about baud rates. Protect these drivers by preventing the TTY
  buffers from getting enormous. Right now we'll just clamp it to 64K,
  which is pretty high, taking into account that these buffers are only
  used by the built-in discipline.

- Only call ttydev_leave() when needed. Back in April/May the TTY
  reference counting mechanism was a little different, which required us
  to call ttydev_leave() each time we finished a cdev operation.
  Nowadays we only need to call ttydev_leave() when we really mark it as
  being closed.

- Improve return codes of read() and write() on TTY device nodes.

- Make sure we really wake up all blocked threads when the driver calls
  tty_rel_gone(). There were some possible code paths where we didn't
  properly wake up any readers/writers.

- Add extra assertions to prevent sleeping on a TTY that has been
  abandoned by the driver.

- Use ttydev_cdevsw as a more reliable method to figure out whether a
  device node is a real TTY device node.

Obtained from:	//depot/projects/mpsafetty/...
Reviewed by:	thompsa
2008-10-15 16:58:35 +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
imgact_aout.c Change the static struct sysentvec and struct Elf_Brandinfo initializers 2008-09-24 10:14:37 +00:00
imgact_elf32.c
imgact_elf64.c
imgact_elf.c If the ABI-overriden interpreter was not loaded, do not set 2008-10-08 11:11:36 +00:00
imgact_gzip.c
imgact_shell.c Decontextualize the couplet VOP_GETATTR / VOP_SETATTR as the passed thread 2008-08-28 15:23:18 +00:00
inflate.c
init_main.c Change the static struct sysentvec and struct Elf_Brandinfo initializers 2008-09-24 10:14:37 +00:00
init_sysent.c Regen. 2008-09-25 20:08:36 +00:00
kern_acct.c Properly lock proctree_lock before locking the process while accounting. 2008-08-21 15:02:17 +00:00
kern_alq.c Use msleep_spin() instead of unlock/tsleep/lock. This was 2008-07-02 20:44:33 +00:00
kern_clock.c Implement per-cpu callout threads, wheels, and locks. 2008-04-02 11:20:30 +00:00
kern_condvar.c - Don't do a WITNESS_SAVE() on the interlock if it is Giant in the condition 2008-09-25 13:42:19 +00:00
kern_conf.c Move uminor() and umajor() to the same place as userspace minor() and major(). 2008-09-27 13:19:09 +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 a `show cpusets' DDB command to print numbered root and 2008-07-07 21:32:02 +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 Downgrade XXX to a Note for fgetsock() and fputsock(). 2008-10-12 20:03:17 +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 Implement the following macros for completeness: 2008-07-21 15:05:25 +00:00
kern_event.c The kqueue_register() function assumes that it is called from the top of 2008-07-07 09:30:11 +00:00
kern_exec.c Remove VSVTX, VSGID and VSUID. This should be a no-op, 2008-09-10 13:16:41 +00:00
kern_exit.c Move per-thread userland debugging flags into seperated field, 2008-10-15 06:31:37 +00:00
kern_fork.c Do the pargs_hold() on the copy of the pointer to the p_args of the 2008-07-23 08:45:25 +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 style(9) 2008-09-23 14:25:56 +00:00
kern_jail.c Step 1.5 of importing the network stack virtualization infrastructure 2008-10-02 15:37:58 +00:00
kern_kthread.c Kill a dead variable 2008-08-03 21:07:19 +00:00
kern_ktr.c
kern_ktrace.c
kern_linker.c Decontextualize the couplet VOP_GETATTR / VOP_SETATTR as the passed thread 2008-08-28 15:23:18 +00:00
kern_lock.c Teach WITNESS about the interlocks used with lockmgr. This removes a bunch 2008-09-10 19:13:30 +00:00
kern_lockf.c Re-implement the client side of rpc.lockd in the kernel. This implementation 2008-06-26 10:21:54 +00:00
kern_malloc.c Enable the creation of a kmem map larger than 4GB. 2008-07-05 19:34:33 +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 Step 1.5 of importing the network stack virtualization infrastructure 2008-10-02 15:37:58 +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
kern_mutex.c Teach WITNESS about the interlocks used with lockmgr. This removes a bunch 2008-09-10 19:13:30 +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 Support sparsely numbered CPUs. 2008-09-22 10:37:02 +00:00
kern_poll.c Commit step 1 of the vimage project, (network stack) 2008-08-17 23:27:27 +00:00
kern_priv.c Remove the suser(9) interface from the kernel. It has been replaced from 2008-09-17 15:49:44 +00:00
kern_proc.c Fix minor TTY API inconsistency. 2008-09-16 14:57:23 +00:00
kern_prot.c
kern_resource.c Fix a small typo in a comment in calcru1(). 2008-09-05 15:55:06 +00:00
kern_rmlock.c Teach WITNESS about the interlocks used with lockmgr. This removes a bunch 2008-09-10 19:13:30 +00:00
kern_rwlock.c Teach WITNESS about the interlocks used with lockmgr. This removes a bunch 2008-09-10 19:13:30 +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 Collect N identical (or near identical) mkdumpheader() implementations into 2008-10-01 22:08:53 +00:00
kern_sig.c Move per-thread userland debugging flags into seperated field, 2008-10-15 06:31:37 +00:00
kern_subr.c Make ureadc() warn when holding any locks, just like uiomove(). 2008-08-28 19:34:58 +00:00
kern_switch.c fix typo in runz_fuzz 2008-05-12 06:42:06 +00:00
kern_sx.c Teach WITNESS about the interlocks used with lockmgr. This removes a bunch 2008-09-10 19:13:30 +00:00
kern_synch.c - Don't do a WITNESS_SAVE() on the interlock if it is Giant in the condition 2008-09-25 13:42:19 +00:00
kern_syscalls.c Various style fixes. 7 space indent is just odd. 2008-09-18 20:10:11 +00:00
kern_sysctl.c
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 Check the result of copyin and in a case of error 2008-10-13 21:04:52 +00:00
kern_thread.c Move per-thread userland debugging flags into seperated field, 2008-10-15 06:31:37 +00:00
kern_time.c
kern_timeout.c add callout_schedule; besides being useful it also improves 2008-08-02 17:42:38 +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 Step 1.5 of importing the network stack virtualization infrastructure 2008-10-02 15:37:58 +00:00
kern_xxx.c Step 1.5 of importing the network stack virtualization infrastructure 2008-10-02 15:37:58 +00:00
ksched.c
link_elf_obj.c Calling linker_load_dependencies() while holding the module' 2008-08-03 13:33:45 +00:00
link_elf.c Calling linker_load_dependencies() while holding the module' 2008-08-03 13:33:45 +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
makesyscalls.sh Tidy up a few things with syscall generation: 2008-09-25 20:07:42 +00:00
md4c.c
md5c.c
p1003_1b.c
posix4_mib.c
sched_4bsd.c When choosing a CPU for a thread in a cpuset, prefer the last CPU that the 2008-07-28 20:39:21 +00:00
sched_ule.c - Check whether we've recorded this tick in ts_ticks on another cpu in 2008-07-19 05:13:47 +00:00
serdev_if.m
stack_protector.c Fix a chicken-and-egg problem: this files implements SSP support, 2008-06-26 07:52:45 +00:00
subr_acl_posix1e.c
subr_autoconf.c If run_interrupt_driven_config_hooks() waits 360 seconds and INVARIANTS 2008-07-21 20:50:49 +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 Close, but not eliminate, a race condition. It is one that properly 2008-10-10 17:49:47 +00:00
subr_clist.c Now that the number of clist consumers have dropped massively, trim down 2008-09-21 18:12:18 +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 dynamically allocate the task structure in firmware_mountroot: when 2008-10-04 23:58:02 +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 - track maximum wait time 2008-07-27 21:45:20 +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
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 Correct an error in the comments for init_param3(). 2008-07-04 19:36:58 +00:00
subr_pcpu.c Make ddb command registration dynamic so modules can extend 2008-09-15 22:45:14 +00:00
subr_power.c
subr_prf.c Integrate the new MPSAFE TTY layer to the FreeBSD operating system. 2008-08-20 08:31:58 +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 Make ddb command registration dynamic so modules can extend 2008-09-15 22:45:14 +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 Switch to simplified BSD license (with phk's approval), plus whitespace 2008-08-09 10:26:21 +00:00
subr_scanf.c
subr_sleepqueue.c Make ddb command registration dynamic so modules can extend 2008-09-15 22:45:14 +00:00
subr_smp.c - Only count the number of CPUs in the rendezvous map once rather than 2008-08-27 18:23:55 +00:00
subr_stack.c Staticize M_STACK. 2008-07-13 17:15:05 +00:00
subr_taskqueue.c revert local change 2008-07-18 07:10:33 +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 ddb command registration dynamic so modules can extend 2008-09-15 22:45:14 +00:00
subr_unit.c
subr_witness.c Oops, missed updating a place with with 's/lock1/plock/' when adding 2008-10-03 18:13:05 +00:00
sys_generic.c Reverse if() logic to improve readability. 2008-09-23 14:25:38 +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 Move per-thread userland debugging flags into seperated field, 2008-10-15 06:31:37 +00:00
sys_socket.c Lock receive socket buffer in soo_stat() rather than commenting that we 2008-10-07 07:10:28 +00:00
syscalls.c Regen. 2008-09-25 20:08:36 +00:00
syscalls.master Tidy up a few things with syscall generation: 2008-09-25 20:07:42 +00:00
systrace_args.c Regen. 2008-09-25 20:08:36 +00:00
sysv_ipc.c
sysv_msg.c
sysv_sem.c Renew semaphore's pointer after wakeup since during msleep 2008-06-19 18:08:42 +00:00
sysv_shm.c
tty_compat.c Fix an awful bug inside our COMPAT_43TTY code. 2008-09-04 16:30:53 +00:00
tty_cons.c Integrate the new MPSAFE TTY layer to the FreeBSD operating system. 2008-08-20 08:31:58 +00:00
tty_info.c Integrate the new MPSAFE TTY layer to the FreeBSD operating system. 2008-08-20 08:31:58 +00:00
tty_inq.c Fix some edge cases in the TTY queues: 2008-08-30 09:18:27 +00:00
tty_outq.c Fix some edge cases in the TTY queues: 2008-08-30 09:18:27 +00:00
tty_pts.c Track state to determine if the associated TTY device node has been used. 2008-09-23 17:12:25 +00:00
tty_pty.c Allow the user to suppress the rate-limited pty(4) warning. 2008-08-23 16:03:00 +00:00
tty_tty.c Remove unneeded Giant locking of /dev/tty. 2008-06-03 12:38:00 +00:00
tty_ttydisc.c Introduce a hooks layer for the MPSAFE TTY layer. 2008-09-22 19:25:14 +00:00
tty.c Import some improvements to the TTY code from the MPSAFE TTY branch. 2008-10-15 16:58:35 +00:00
uipc_accf.c
uipc_cow.c
uipc_debug.c Change a variable name to not shadow a global 2008-07-03 08:35:59 +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
uipc_mbuf.c Remove the alignment of the align parameter. This is up to the caller to pass 2008-09-05 04:05:31 +00:00
uipc_mqueue.c fdescfs, devfs, mqueuefs, nfs, portalfs, pseudofs, tmpfs and xfs 2008-09-20 19:50:52 +00:00
uipc_sem.c Rework the lifetime management of the kernel implementation of POSIX 2008-06-27 05:39:04 +00:00
uipc_shm.c Rework the lifetime management of the kernel implementation of POSIX 2008-06-27 05:39:04 +00:00
uipc_sockbuf.c Rewrite sbreserve_locked()'s comment on NULL thread pointers, eliminating 2008-10-07 09:51:39 +00:00
uipc_socket.c In soreceive_dgram, when a 0-length buffer is passed into recv(2) and 2008-10-07 20:57:55 +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 Remove stale comment: while uipc_connect2() was, until recently, not 2008-10-11 17:28:22 +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 Remove the struct thread unuseful argument from bufobj interface. 2008-10-10 21:23:50 +00:00
vfs_cache.c Part 1 of making shared lookups more resilient with respect to forced 2008-09-24 18:51:33 +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 Decontextualize the couplet VOP_GETATTR / VOP_SETATTR as the passed thread 2008-08-28 15:23:18 +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
vfs_lookup.c Enable shared locks for path name lookups on supported filesystems (NFS 2008-10-01 19:25:37 +00:00
vfs_mount.c Remove the struct thread unuseful argument from bufobj interface. 2008-10-10 21:23:50 +00:00
vfs_subr.c Remove the struct thread unuseful argument from bufobj interface. 2008-10-10 21:23:50 +00:00
vfs_syscalls.c When setting error to EINVAL in 'fvp == tdvp' case, jump to out label, 2008-09-01 10:11:39 +00:00
vfs_vnops.c Initialize va_rdev to NODEV and va_fsid to VNOVAL before the 2008-09-20 19:48:24 +00:00
vnode_if.src Decontextualize the couplet VOP_GETATTR / VOP_SETATTR as the passed thread 2008-08-28 15:23:18 +00:00