Christian S.J. Peron 2ed4894a26 Restore fd optimization with a few minor tweaks, to quote tegge: ...

"fdinit() fails to initialize newfdp->fd_fd.fd_lastfile to -1.  This breaks
fdcopy() which will incorrectly set newfdp->fd_freefile to 1 if no files are
open and the last file descriptor marked as unused for fdp was 0.  This later
causes descriptor 0 to be unavailable in newfdp when the optimization is
enabled.

When the last file descriptor previously marked as used is nonzero and marked
as unused, fdunused() incorrectly sets fdp->fd_lastfile to fd - 1 due to
fd_last_used() returning (size - 1).  This hides the problem that breaks the
optimization."

This allows us to keep the optimization, while un-breaking it.

This is a RELENG_6 candidate.

PR:		kern/87208
MFC after:	1 week
Submitted by:	tegge

2006-03-20 00:13:47 +00:00

..

bus_if.m

…

clock_if.m

…

cpufreq_if.m

…

device_if.m

…

genassym.sh

…

imgact_aout.c

Correct two vm object reference leaks in error cases.

2006-03-16 08:51:59 +00:00

imgact_elf32.c

…

imgact_elf64.c

…

imgact_elf.c

Avoid a vm object reference leak in a rarely used code path.

2006-01-21 20:11:49 +00:00

imgact_gzip.c

Maintain the lock on the vnode for most of exec_elfN_imgact().

2005-12-24 04:57:50 +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

Modify the way we account for CPU time spent (step 1)

2006-02-07 21:22:02 +00:00

init_sysent.c

Regenerate.

2006-03-01 06:49:38 +00:00

kern_acct.c

Provide some anti-footshooting. Don't allow the user to set the interval

2006-02-07 18:59:47 +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

Grr. Backout previous change. vn_open_cred() will call NDFREE() on failure.

2006-01-27 11:25:06 +00:00

kern_clock.c

CPU time accounting speedup (step 2)

2006-02-11 09:33:07 +00:00

kern_condvar.c

Fix a sleep queue race for KSE thread.

2006-02-23 00:13:58 +00:00

kern_conf.c

Novel idea, don't print a string if it is NULL!

2006-01-12 19:15:14 +00:00

kern_context.c

…

kern_cpu.c

- Print message about cpufreq and timecounter TSC

2006-03-03 02:06:04 +00:00

kern_descrip.c

Restore fd optimization with a few minor tweaks, to quote tegge:

2006-03-20 00:13:47 +00:00

kern_environment.c

Fix memory leak introduced in previous revision.

2006-03-15 19:23:08 +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

Fix exec_map resource leaks.

2006-03-08 20:21:54 +00:00

kern_exit.c

1. Count last time slice, this intends to fix

2006-03-14 04:00:21 +00:00

kern_fork.c

Fix a race between file operations and rfork(RFCFDG) by parking

2006-03-15 23:24:14 +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

Close some races between procfs/ptrace and exit(2):

2006-02-22 18:57:50 +00:00

kern_kthread.c

Don't do a PHOLD() in kthread_create() w/o a matching PRELE() in

2006-02-22 17:21:45 +00:00

kern_ktr.c

Whitespace.

2006-01-27 23:06:08 +00:00

kern_ktrace.c

- Lock access to vrele() with VFS_LOCK_GIANT() rather than mtx_lock(&Giant).

2006-01-30 08:19:01 +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

- Remove and unused include.

2005-12-23 21:32:40 +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

Don't call vn_finished_write() if vn_start_write() failed.

2006-03-19 20:43:07 +00:00

kern_malloc.c

Fix bug in malloc_uninit():

2006-03-03 22:36:52 +00:00

kern_mbuf.c

Properly handle the case when the packet secondary zone can't allocate

2006-03-08 14:05:38 +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

…

kern_mtxpool.c

…

kern_mutex.c

- Add support for having both a shared and exclusive queue of threads in

2006-01-27 22:42:12 +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

…

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

CPU time accounting speedup (step 2)

2006-02-11 09:33:07 +00:00

kern_prot.c

Audit the arguments (user/group IDs) for the system calls that set these IDs.

2006-02-06 00:32:33 +00:00

kern_resource.c

Go over calcru and friends once more.

2006-03-11 10:48:19 +00:00

kern_rwlock.c

Fix another compile problem. If I find any more, this file is going in the

2006-02-01 04:18:07 +00:00

kern_sema.c

…

kern_shutdown.c

- Add the global 'rebooting' variable that is used to detect when

2006-02-06 10:12:00 +00:00

kern_sig.c

Remove _STOPEVENT call, it is already called in issignal, simplify

2006-03-09 08:31:51 +00:00

kern_subr.c

…

kern_switch.c

Trim trailing whitespace.

2005-12-28 17:13:31 +00:00

kern_sx.c

Add a new file (kern/subr_lock.c) for holding code related to struct

2006-01-17 16:55:17 +00:00

kern_synch.c

Fix a sleep queue race for KSE thread.

2006-02-23 00:13:58 +00:00

kern_syscalls.c

…

kern_sysctl.c

Make sysctl_msec_to_ticks(SYSCTL_HANDLER_ARGS) generally available instead

2006-02-16 15:40:36 +00:00

kern_tc.c

Disable the "cputick increased..." message now that the dust has settled.

2006-03-15 20:22:32 +00:00

kern_thr.c

Call thread_stopped in thr_exit to notify parent that the child process

2006-02-10 03:34:29 +00:00

kern_thread.c

1. Count last time slice, this intends to fix

2006-03-14 04:00:21 +00:00

kern_time.c

Let kernel POSIX timer code and mqueue code to use integer as a resource

2006-03-01 06:29:34 +00:00

kern_timeout.c

Use the recently added msleep_spin() function to simplify the

2006-02-23 19:13:12 +00:00

kern_umtx.c

Axe unused code.

2006-02-04 06:36:39 +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

…

ksched.c

…

link_elf_obj.c

Make our ELF64 type definitions match standards. In particular this

2005-12-18 04:52:37 +00:00

link_elf.c

Make our ELF64 type definitions match standards. In particular this

2005-12-18 04:52:37 +00:00

linker_if.m

…

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

…

md5c.c

Fix an 11 year old mistake: Let the hash functions take a void* instead

2006-01-17 15:35:57 +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

Use variable i instead of variable cpus as an index to get correct kseq.

2005-12-27 12:02:03 +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

…

subr_blist.c

…

subr_bus.c

Add a devd(8) event that is sent after the system resumes. This can be

2006-01-22 01:06:25 +00:00

subr_clist.c

…

subr_clock.c

…

subr_devstat.c

- Remove two mtx_asserts that can incorrectly trigger if

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

subr_disk.c

When calling bioq_first() to see if a queue is empty in bioq_disksort(),

2006-01-13 23:27:12 +00:00

subr_eventhandler.c

…

subr_firmware.c

firmware(9) is a subsystem to load binary data into the kernel via a

2006-01-29 02:52:42 +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

Increment kobj_lookup_misses on a miss rather than decrementing it.

2005-12-29 18:00:42 +00:00

subr_lock.c

Add a basic reader/writer lock implementation to the kernel. This

2006-01-27 23:13:26 +00:00

subr_log.c

…

subr_mbpool.c

…

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

…

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

Implement printf 'X' conversion for both libstand and kernel.

2006-03-09 22:37:34 +00:00

subr_prof.c

Change the addupc_*() functions to use the uintfptr_t type for pc rather

2005-12-16 22:08:32 +00:00

subr_rman.c

Prefer NULL to 0.

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

subr_rtc.c

…

subr_sbuf.c

Make sbuf_copyin() return the number of bytes copied on success.

2005-12-23 11:49:53 +00:00

subr_scanf.c

…

subr_sleepqueue.c

Move comments to more accurate place.

2006-02-23 03:42:17 +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

Add the following to the taskqueue api:

2006-01-14 01:55:24 +00:00

subr_trap.c

Test before modifying p_sflag to avoid unconditionally cache line

2006-02-10 14:59:16 +00:00

subr_turnstile.c

- Add support for having both a shared and exclusive queue of threads in

2006-01-27 22:42:12 +00:00

subr_unit.c

…

subr_witness.c

Axe KTR_ALQ_MASK now that KTR_WITNESS is off unless you hack an #ifdef

2006-01-25 14:57:23 +00:00

sys_generic.c

Return error from fget_write() rather than hardcoding EBADF now that

2006-01-06 16:34:22 +00:00

sys_pipe.c

- In pipe() return the error returned by pipe_create(), rather then

2006-01-30 08:25:04 +00:00

sys_process.c

Close some races between procfs/ptrace and exit(2):

2006-02-22 18:57:50 +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

Regenerate.

2006-03-01 06:49:38 +00:00

syscalls.master

Let kernel POSIX timer code and mqueue code to use integer as a resource

2006-03-01 06:29:34 +00:00

sysv_ipc.c

…

sysv_msg.c

…

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

Move the old BSD4.3 tty compatibility from (!BURN_BRIDGES && COMPAT_43)

2006-01-10 09:19:10 +00:00

tty_conf.c

…

tty_cons.c

…

tty_pts.c

Allow root to open prison pts devices too.

2006-01-31 22:19:37 +00:00

tty_pty.c

Don't destroy the slave /dev entry until someone figures out why devfs seems

2006-02-02 20:35:45 +00:00

tty_subr.c

…

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

Move the old BSD4.3 tty compatibility from (!BURN_BRIDGES && COMPAT_43)

2006-01-10 09:19:10 +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

The sysctls kern.ipc.[max_linkhdr|max_protohdr|max_hdr|max_datalen]

2006-02-18 17:16:18 +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

promote fast ipsec's m_clone routine for public use; it is renamed

2006-03-15 21:11:11 +00:00

uipc_mqueue.c

Let kernel POSIX timer code and mqueue code to use integer as a resource

2006-03-01 06:29:34 +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

Convert remaining functions to ANSI C function declarations.

2006-01-22 00:30:46 +00:00

uipc_sockbuf.c

Change soabort() from returning int to returning void, since all

2006-03-16 07:03:14 +00:00

uipc_socket2.c

Change soabort() from returning int to returning void, since all

2006-03-16 07:03:14 +00:00

uipc_socket.c

Change soabort() from returning int to returning void, since all

2006-03-16 07:03:14 +00:00

uipc_syscalls.c

Fix 32bit sendfile by implementing kern_sendfile so that it takes

2006-02-28 19:39:18 +00:00

uipc_usrreq.c

Modify UNIX domain sockets to guarantee, and assume, that so_pcb is always

2006-03-17 13:52:57 +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

1. Remove aio entry from lists earlier in aio_free_entry,

2006-02-26 12:56:23 +00:00

vfs_bio.c

For low memory situations, non-VMIO buffers didnt't release pages back to

2006-02-02 21:37:39 +00:00

vfs_cache.c

- Don't check v_mount for NULL to determine if a vnode has been recycled.

2006-02-06 10:15:27 +00:00

vfs_cluster.c

Let snapshots make a copy of old contents for all buffers taking part in a

2006-03-19 21:43:36 +00:00

vfs_default.c

- Add a comment warning about an anomalous condition where we VOP_UNLOCK

2006-01-30 08:21:23 +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

use strlcpy in cvtstatfs and copy_statfs instead of bcopy to ensure

2006-03-04 00:09:09 +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

…

vfs_lookup.c

- Don't check v_mount for NULL to determine if a vnode has been recycled.

2006-02-06 10:15:27 +00:00

vfs_mount.c

The mount(8) manpage says: "In case of conflicting options being

2006-03-13 14:58:37 +00:00

vfs_subr.c

- Correct an assert in vop_rename_pre. fdvp may be locked if it is either

2006-03-19 20:14:46 +00:00

vfs_syscalls.c

use strlcpy in cvtstatfs and copy_statfs instead of bcopy to ensure

2006-03-04 00:09:09 +00:00

vfs_vnops.c

Make sure that we are adding a path token to the audit record in open(2).

2006-03-11 17:14:05 +00:00

vnode_if.src

Eradicate caddr_t from the VFS API.

2005-12-14 00:49:52 +00:00