alfred 844237b396 SMP Lock struct file, filedesc and the global file list. ...

Seigo Tanimura (tanimura) posted the initial delta.

I've polished it quite a bit reducing the need for locking and
adapting it for KSE.

Locks:

1 mutex in each filedesc
   protects all the fields.
   protects "struct file" initialization, while a struct file
     is being changed from &badfileops -> &pipeops or something
     the filedesc should be locked.

1 mutex in each struct file
   protects the refcount fields.
   doesn't protect anything else.
   the flags used for garbage collection have been moved to
     f_gcflag which was the FILLER short, this doesn't need
     locking because the garbage collection is a single threaded
     container.
  could likely be made to use a pool mutex.

1 sx lock for the global filelist.

struct file *	fhold(struct file *fp);
        /* increments reference count on a file */

struct file *	fhold_locked(struct file *fp);
        /* like fhold but expects file to locked */

struct file *	ffind_hold(struct thread *, int fd);
        /* finds the struct file in thread, adds one reference and
                returns it unlocked */

struct file *	ffind_lock(struct thread *, int fd);
        /* ffind_hold, but returns file locked */

I still have to smp-safe the fget cruft, I'll get to that asap.

2002-01-13 11:58:06 +00:00

..

bus_if.m

…

device_if.m

…

genassym.sh

brace by itself after function declaration.

2001-12-27 20:16:21 +00:00

imgact_aout.c

Make MAXTSIZ, DFLDSIZ, MAXDSIZ, DFLSSIZ, MAXSSIZ, SGROWSIZ loader

2001-10-10 23:06:54 +00:00

imgact_elf.c

Remove whitespace at end of line.

2001-12-16 17:21:16 +00:00

imgact_gzip.c

Make MAXTSIZ, DFLDSIZ, MAXDSIZ, DFLSSIZ, MAXSSIZ, SGROWSIZ loader

2001-10-10 23:06:54 +00:00

imgact_shell.c

Return a more meaningful errno when the length of the interpreter

2001-11-28 03:26:58 +00:00

inflate.c

…

init_main.c

SMP Lock struct file, filedesc and the global file list.

2002-01-13 11:58:06 +00:00

init_sysent.c

Make AIO a loadable module.

2001-12-29 07:13:47 +00:00

kern_acct.c

o Move suser() calls in kern/ to using suser_xxx() with an explicit

2001-11-01 20:56:57 +00:00

kern_acl.c

SMP Lock struct file, filedesc and the global file list.

2002-01-13 11:58:06 +00:00

kern_cap.c

Update copyrights to include Thomas Moestl.

2001-11-05 15:36:24 +00:00

kern_clock.c

Change the preemption code for software interrupt thread schedules and

2002-01-05 08:47:13 +00:00

kern_condvar.c

Change the preemption code for software interrupt thread schedules and

2002-01-05 08:47:13 +00:00

kern_conf.c

Add a new sysinit SI_SUB_DEVFS. Devfs hooks into the kernel at SI_ORDER_FIRST,

2002-01-09 04:58:49 +00:00

kern_descrip.c

SMP Lock struct file, filedesc and the global file list.

2002-01-13 11:58:06 +00:00

kern_environment.c

Fix an inverted test csae. Success of getenv() is determined by a return

2001-10-25 17:22:31 +00:00

kern_event.c

SMP Lock struct file, filedesc and the global file list.

2002-01-13 11:58:06 +00:00

kern_exec.c

SMP Lock struct file, filedesc and the global file list.

2002-01-13 11:58:06 +00:00

kern_exit.c

Release text vnode in exit() rather than wait(). Occasionally

2002-01-05 21:47:58 +00:00

kern_fork.c

SMP Lock struct file, filedesc and the global file list.

2002-01-13 11:58:06 +00:00

kern_idle.c

Modify the critical section API as follows:

2001-12-18 00:27:18 +00:00

kern_intr.c

Change the preemption code for software interrupt thread schedules and

2002-01-05 08:47:13 +00:00

kern_jail.c

- Move _jail sysctl node underneath _kern_security in order to standardize

2001-12-12 05:23:20 +00:00

kern_kthread.c

Use a different mechanism to get the vnlru process to wake up and notice

2001-12-19 01:31:12 +00:00

kern_ktr.c

Print parm6 too in the !KTR_EXTEND case.

2002-01-01 21:47:38 +00:00

kern_ktrace.c

Fix ktrace enablement/disablement races that can result in a vnode

2001-10-24 01:05:39 +00:00

kern_linker.c

- Ensure that linker file id's are unique, rather than blindly

2001-11-18 18:19:35 +00:00

kern_lock.c

Fix a BUF_TIMELOCK race against BUF_LOCK and fix a deadlock in vget()

2001-12-20 22:42:27 +00:00

kern_lockf.c

make LOCKF_DEBUG kernel option work (sorta)

2001-12-02 12:47:25 +00:00

kern_malloc.c

KSE Milestone 2

2001-09-12 08:38:13 +00:00

kern_mib.c

Add/correct description for some sysctl variables where it was missing.

2001-12-16 16:07:20 +00:00

kern_module.c

KSE Milestone 2

2001-09-12 08:38:13 +00:00

kern_mtxpool.c

cast hashing index to (int)(intptr_t) for calculation.

2001-11-19 00:20:36 +00:00

kern_mutex.c

Change the preemption code for software interrupt thread schedules and

2002-01-05 08:47:13 +00:00

kern_ntptime.c

KSE Milestone 2

2001-09-12 08:38:13 +00:00

kern_physio.c

…

kern_poll.c

Complete the device polling support by adding a thread in charge

2001-12-19 00:53:24 +00:00

kern_proc.c

Fix a bug where the mutex name wasn't always displayed for processes in

2002-01-05 17:18:59 +00:00

kern_prot.c

- Push much of the logic for p_cansignal() behind cr_cansignal, which

2002-01-06 00:20:12 +00:00

kern_random.c

…

kern_resource.c

*** empty log message ***

2001-11-04 18:22:48 +00:00

kern_sema.c

Repeat after me -- "Use of ANSI string concatenation can be bad."

2001-12-10 05:40:12 +00:00

kern_shutdown.c

Change the preemption code for software interrupt thread schedules and

2002-01-05 08:47:13 +00:00

kern_sig.c

o Revert kern_sig.c#1.143, as cr_cansignal() doesn't currently permit

2002-01-10 01:25:35 +00:00

kern_subr.c

Change the preemption code for software interrupt thread schedules and

2002-01-05 08:47:13 +00:00

kern_switch.c

Modify the critical section API as follows:

2001-12-18 00:27:18 +00:00

kern_sx.c

Update to C99, s/__FUNCTION__/__func__/.

2001-12-10 05:51:45 +00:00

kern_synch.c

Change the preemption code for software interrupt thread schedules and

2002-01-05 08:47:13 +00:00

kern_syscalls.c

KSE Milestone 2

2001-09-12 08:38:13 +00:00

kern_sysctl.c

Add code to export and print the description associated to sysctl

2001-12-16 02:55:41 +00:00

kern_tc.c

Remove a bogus #ifdef KTR stanza.

2001-01-01 23:09:53 +00:00

kern_time.c

o Modify static settime() to accept the proc * for the process requesting

2001-09-26 19:53:57 +00:00

kern_timeout.c

Move most of the kernel submap initialization code, including the

2001-08-22 04:07:27 +00:00

kern_xxx.c

KSE Milestone 2

2001-09-12 08:38:13 +00:00

ksched.c

KSE Milestone 2

2001-09-12 08:38:13 +00:00

link_aout.c

Since we used '#ifdef __i386__', don't close with '#endif /* !__alpha__ */'

2001-11-24 10:11:14 +00:00

link_elf_obj.c

Fix a number of misspellings of "dependency" and "dependencies" in

2001-11-16 21:08:40 +00:00

link_elf.c

Fix a number of misspellings of "dependency" and "dependencies" in

2001-11-16 21:08:40 +00:00

linker_if.m

Add the sysctl "kern.function_list", which currently exports all

2001-10-30 15:21:45 +00:00

Make.tags.inc

Update pathnames for creation of tags file.

2001-12-05 01:23:21 +00:00

Makefile

Don't generate <sys/syscalls-hide.h> it has never had any users anywhere in

2001-10-13 09:17:49 +00:00

makeobjops.pl

Switch warnings and strict back on again in a way that's compatible

2001-11-16 02:02:42 +00:00

makesyscalls.sh

Don't generate <sys/syscalls-hide.h> it has never had any users anywhere in

2001-10-13 09:17:49 +00:00

md4c.c

Import kernel part of SMB/CIFS requester.

2001-04-10 07:59:06 +00:00

md5c.c

…

p1003_1b.c

KSE Milestone 2

2001-09-12 08:38:13 +00:00

posix4_mib.c

…

subr_acl_posix1e.c

SMP Lock struct file, filedesc and the global file list.

2002-01-13 11:58:06 +00:00

subr_autoconf.c

…

subr_blist.c

With Alfred's permission, remove vm_mtx in favor of a fine-grained approach

2001-07-04 16:20:28 +00:00

subr_bus.c

Fixed an apparent typo ("-" before ":") and an English error (comma

2001-12-28 18:32:13 +00:00

subr_clist.c

Make cblock_alloc_cblocks() spell its own name

2001-03-27 10:21:26 +00:00

subr_devstat.c

Export the head structure for the device statistics STAILQ in

2001-08-04 18:02:47 +00:00

subr_disk.c

Don't call cdevsw_add().

2001-11-04 11:56:22 +00:00

subr_disklabel.c

Fix typo so that the delay code introduced in revision 1.60 actually

2002-01-12 02:04:15 +00:00

subr_diskmbr.c

Wrap Dangerously Dedicated printf under if (bootverbose)

2001-12-11 05:35:43 +00:00

subr_diskslice.c

KSE Milestone 2

2001-09-12 08:38:13 +00:00

subr_eventhandler.c

KSE Milestone 2

2001-09-12 08:38:13 +00:00

subr_hints.c

Fix a fatal type mismatch (char *static_env; vs char static_env[]).

2001-09-17 21:27:41 +00:00

subr_kobj.c

…

subr_log.c

Use the passed in thread to selrecord() instead of curthread.

2001-09-21 22:46:54 +00:00

subr_mbuf.c

On the first day of Christmas bde gave to me:

2001-12-23 22:04:08 +00:00

subr_mchain.c

Update to C99, s/__FUNCTION__/__func__/.

2001-12-10 05:51:45 +00:00

subr_module.c

Preceed/preceeding are not english words. Use precede and preceding.

2001-02-18 10:43:53 +00:00

subr_param.c

Proper fix for old config setting maxusers to 8.

2001-12-14 09:39:29 +00:00

subr_pcpu.c

Add a per-cpu variable, cpumask, the preshifted equivalent of 1 << cpuid.

2002-01-05 09:35:50 +00:00

subr_power.c

Some fix for the recent apm module changes.

2001-11-01 16:34:07 +00:00

subr_prf.c

o Introduce kern.security.bsd.unprivileged_read_msgbuf, which allows

2001-11-30 21:40:52 +00:00

subr_prof.c

- Change all callers of addupc_task() to check PS_PROFIL explicitly and

2001-12-18 09:06:10 +00:00

subr_rman.c

Add a rman_reserve_resource_bound() function that takes an additional

2001-12-21 21:40:55 +00:00

subr_sbuf.c

Replace spaces after #defines with tabs; this makes all #defines

2002-01-09 07:29:28 +00:00

subr_scanf.c

…

subr_smp.c

Fix forward_roundrobin(). It was mistakenly using the cpu number as

2002-01-05 09:38:47 +00:00

subr_taskqueue.c

Change the preemption code for software interrupt thread schedules and

2002-01-05 08:47:13 +00:00

subr_trap.c

Change the preemption code for software interrupt thread schedules and

2002-01-05 08:47:13 +00:00

subr_turnstile.c

Change the preemption code for software interrupt thread schedules and

2002-01-05 08:47:13 +00:00

subr_witness.c

Change the preemption code for software interrupt thread schedules and

2002-01-05 08:47:13 +00:00

subr_xxx.c

KSE Milestone 2

2001-09-12 08:38:13 +00:00

sys_generic.c

SMP Lock struct file, filedesc and the global file list.

2002-01-13 11:58:06 +00:00

sys_pipe.c

SMP Lock struct file, filedesc and the global file list.

2002-01-13 11:58:06 +00:00

sys_process.c

Move procfs_* from procfs_machdep.c into sys_process.c, and rename them to

2001-10-21 23:57:24 +00:00

sys_socket.c

SMP Lock struct file, filedesc and the global file list.

2002-01-13 11:58:06 +00:00

syscalls.c

Add nmount() stub function and regenerate the syscall-glue which should

2001-11-02 17:59:23 +00:00

syscalls.master

Make AIO a loadable module.

2001-12-29 07:13:47 +00:00

sysv_ipc.c

Eliminate semexit_hook using at_exit(9) and rm_at_exit(9).

2001-12-30 18:55:09 +00:00

sysv_msg.c

Make AIO a loadable module.

2001-12-29 07:13:47 +00:00

sysv_sem.c

Eliminate semexit_hook using at_exit(9) and rm_at_exit(9).

2001-12-30 18:55:09 +00:00

sysv_shm.c

Make AIO a loadable module.

2001-12-29 07:13:47 +00:00

tty_compat.c

…

tty_conf.c

KSE Milestone 2

2001-09-12 08:38:13 +00:00

tty_cons.c

Fix boot -p for DDBless kernels

2001-12-11 10:21:26 +00:00

tty_pty.c

o Move suser() calls in kern/ to using suser_xxx() with an explicit

2001-11-01 20:56:57 +00:00

tty_subr.c

Make cblock_alloc_cblocks() spell its own name

2001-03-27 10:21:26 +00:00

tty_tty.c

KSE Milestone 2

2001-09-12 08:38:13 +00:00

tty.c

utime/stime.tv_sec are elapsed times, not relative to 1970. We can

2001-11-17 00:26:57 +00:00

uipc_accf.c

Revert the last bits of my bogus move of NMBCLUSTERS

2001-06-01 21:47:34 +00:00

uipc_domain.c

Update the comment about System initialization to reflect the use of

2001-12-08 04:20:54 +00:00

uipc_mbuf2.c

Sync with recent KAME.

2001-06-11 12:39:29 +00:00

uipc_mbuf.c

Update to C99, s/__FUNCTION__/__func__/.

2001-12-10 05:51:45 +00:00

uipc_proto.c

Implement a LOCAL_PEERCRED socket option which returns a

2001-08-17 22:01:18 +00:00

uipc_sockbuf.c

Revert 1.81; 1.19 fixed this already in a different way.

2002-01-09 01:45:17 +00:00

uipc_socket2.c

Revert 1.81; 1.19 fixed this already in a different way.

2002-01-09 01:45:17 +00:00

uipc_socket.c

o Make the credential used by socreate() an explicit argument to

2001-12-31 17:45:16 +00:00

uipc_syscalls.c

SMP Lock struct file, filedesc and the global file list.

2002-01-13 11:58:06 +00:00

uipc_usrreq.c

SMP Lock struct file, filedesc and the global file list.

2002-01-13 11:58:06 +00:00

vfs_acl.c

SMP Lock struct file, filedesc and the global file list.

2002-01-13 11:58:06 +00:00

vfs_aio.c

o Correct a 32/64-bit error in the initialization of aiol_zone, specifically,

2002-01-09 06:40:45 +00:00

vfs_bio.c

This fixes a large number of bugs in our NFS client side code. A recent

2001-12-14 01:16:57 +00:00

vfs_cache.c

SMP Lock struct file, filedesc and the global file list.

2002-01-13 11:58:06 +00:00

vfs_cluster.c

Implement IO_NOWDRAIN and B_NOWDRAIN - prevents the buffer cache from blocking

2001-11-05 18:48:54 +00:00

vfs_conf.c

Remove the use of _PATH_DEV in the example.

2001-11-24 01:34:12 +00:00

vfs_default.c

Fix incorrect double-termination of vm_object. When a vm_object is

2001-10-23 01:23:41 +00:00

vfs_export.c

Fix some signed/unsigned integer confusion, and add bounds checking of

2001-09-10 11:28:07 +00:00

vfs_extattr.c

SMP Lock struct file, filedesc and the global file list.

2002-01-13 11:58:06 +00:00

vfs_init.c

Revert consequences of changes to mount.h, part 2.

2001-04-29 02:45:39 +00:00

vfs_lookup.c

SMP Lock struct file, filedesc and the global file list.

2002-01-13 11:58:06 +00:00

vfs_mount.c

Remove the use of _PATH_DEV in the example.

2001-11-24 01:34:12 +00:00

vfs_subr.c

Add vlruvp() routine - implements LRU operation for vnode recycling.

2002-01-10 18:31:53 +00:00

vfs_syscalls.c

SMP Lock struct file, filedesc and the global file list.

2002-01-13 11:58:06 +00:00

vfs_vnops.c

SMP Lock struct file, filedesc and the global file list.

2002-01-13 11:58:06 +00:00

vnode_if.pl

Throw the $FreeBSD$s back in, properly escaping them.

2002-01-04 05:27:47 +00:00

vnode_if.src

KSE Milestone 2

2001-09-12 08:38:13 +00:00