rwatson 68d9c43724 Add a new kernel option, MALLOC_MAKE_FAILURES, which compiles ...

in a debugging feature causing M_NOWAIT allocations to fail at
a specified rate.  This can be useful for detecting poor
handling of M_NOWAIT: the most frequent problems I've bumped
into are unconditional deference of the pointer even though
it's NULL, and hangs as a result of a lost event where memory
for the event couldn't be allocated.  Two sysctls are added:

debug.malloc.failure_rate

  How often to generate a failure: if set to 0 (default), this
  feature is disabled.  Otherwise, the frequency of failures --
  I've been using 10 (one in ten mallocs fails), but other
  popular settings might be much lower or much higher.

debug.malloc.failure_count

  Number of times a coerced malloc failure has occurred as a
  result of this feature.  Useful for tracking what might have
  happened and whether failures are being generated.

Useful possible additions: tying failure rate to malloc type,
printfs indicating the thread that experienced the coerced
failure.

Reviewed by:	jeffr, jhb

2003-03-26 20:18:40 +00:00

..

bus_if.m

Give print_child a default method.

2003-03-25 04:32:52 +00:00

clock_if.m

…

device_if.m

…

genassym.sh

…

imgact_aout.c

Back out M_* changes, per decision of the TRB.

2003-02-19 05:47:46 +00:00

imgact_elf32.c

Improve the way that an elf image activator for an alternate word size is

2003-01-04 22:07:48 +00:00

imgact_elf64.c

Improve the way that an elf image activator for an alternate word size is

2003-01-04 22:07:48 +00:00

imgact_elf.c

Back out M_* changes, per decision of the TRB.

2003-02-19 05:47:46 +00:00

imgact_gzip.c

Correct typos, mostly s/ a / an / where appropriate. Some whitespace cleanup,

2003-01-01 18:49:04 +00:00

imgact_shell.c

Correct typos, mostly s/ a / an / where appropriate. Some whitespace cleanup,

2003-01-01 18:49:04 +00:00

inflate.c

Back out M_* changes, per decision of the TRB.

2003-02-19 05:47:46 +00:00

init_main.c

Use the proc lock to protect p_realtimer instead of Giant, and obtain

2003-02-17 10:03:02 +00:00

init_sysent.c

Add a timeout parameter to kse_release.

2003-02-20 08:18:15 +00:00

kern_acct.c

Trim some trailing whitespace.

2003-03-13 23:07:09 +00:00

kern_acl.c

Bow to the whining masses and change a union back into void *. Retain

2003-01-13 00:33:17 +00:00

kern_alq.c

Back out M_* changes, per decision of the TRB.

2003-02-19 05:47:46 +00:00

kern_clock.c

Update netisr handling; Each SWI now registers its queue, and all queue

2003-03-04 23:19:55 +00:00

kern_condvar.c

Replace calls to WITNESS_SLEEP() and witness_list() with equivalent calls

2003-03-04 21:03:05 +00:00

kern_conf.c

Add one little hack to allow us to make MAJOR_AUTO be zero:

2003-03-09 10:28:05 +00:00

kern_context.c

Add getcontext, setcontext, and swapcontext as system calls.

2002-11-16 06:35:53 +00:00

kern_descrip.c

Gigacommit to improve device-driver source compatibility between

2003-03-03 12:15:54 +00:00

kern_environment.c

Back out M_* changes, per decision of the TRB.

2003-02-19 05:47:46 +00:00

kern_event.c

Back out M_* changes, per decision of the TRB.

2003-02-19 05:47:46 +00:00

kern_exec.c

Replace the at_fork, at_exec, and at_exit functions with the slightly more

2003-03-24 21:15:35 +00:00

kern_exit.c

Replace the at_fork, at_exec, and at_exit functions with the slightly more

2003-03-24 21:15:35 +00:00

kern_fork.c

Replace the at_fork, at_exec, and at_exit functions with the slightly more

2003-03-24 21:15:35 +00:00

kern_idle.c

- Create a new scheduler api that is defined in sys/sched.h

2002-10-12 05:32:24 +00:00

kern_intr.c

Add a WITNESS_WARN() call to verify that we hold no locks after running

2003-03-04 21:01:42 +00:00

kern_jail.c

Back out M_* changes, per decision of the TRB.

2003-02-19 05:47:46 +00:00

kern_kse.c

Adjust code for userland preemptive. Userland can set a quantum in

2003-03-19 05:49:38 +00:00

kern_kthread.c

Some kernel threads try to do significant work, and the default KSTACK_PAGES

2002-10-02 07:44:29 +00:00

kern_ktr.c

Trim leading "../" sequences from filenames.

2003-03-11 19:56:16 +00:00

kern_ktrace.c

Add a new userland-visible ktrace flag KTR_DROP and an internal ktrace flag

2003-03-13 18:31:15 +00:00

kern_linker.c

FreeBSD 5.0 has stopped shipping /modules 2.5 years ago. Catch

2003-03-03 22:53:35 +00:00

kern_lock.c

Use the KTR_LOCK mask for logging events via KTR in lockmgr() rather

2003-03-11 20:00:37 +00:00

kern_lockf.c

Including <sys/stdint.h> is (almost?) universally only to be able to use

2003-03-18 08:45:25 +00:00

kern_mac.c

Modify the mac_init_ipq() MAC Framework entry point to accept an

2003-03-26 15:12:03 +00:00

kern_malloc.c

Add a new kernel option, MALLOC_MAKE_FAILURES, which compiles

2003-03-26 20:18:40 +00:00

kern_mib.c

- Provide backwards compatibility for kern.fallback_elf_brand.

2003-01-05 03:48:14 +00:00

kern_module.c

Back out M_* changes, per decision of the TRB.

2003-02-19 05:47:46 +00:00

kern_mtxpool.c

…

kern_mutex.c

Remove unused mtx_lock_giant(), mtx_unlock_giant(), related globals

2003-03-23 11:26:11 +00:00

kern_ntptime.c

Explicitly have the timecounter init happen after the cpu_initclocks is

2003-01-06 01:01:08 +00:00

kern_physio.c

- Add a lock for protecting against msleep(bp, ...) wakeup(bp) races.

2003-03-13 07:31:45 +00:00

kern_poll.c

Update netisr handling; Each SWI now registers its queue, and all queue

2003-03-04 23:19:55 +00:00

kern_proc.c

- Cache a reference to the credential of the thread that starts a ktrace in

2003-03-13 18:24:22 +00:00

kern_prot.c

Back out M_* changes, per decision of the TRB.

2003-02-19 05:47:46 +00:00

kern_resource.c

Back out previous. The locking here needs a rethink.

2003-03-13 00:54:53 +00:00

kern_sema.c

…

kern_shutdown.c

style.

2003-02-14 12:44:48 +00:00

kern_sig.c

Fix threaded process job control bug. SMP tested.

2003-03-11 00:07:53 +00:00

kern_subr.c

Remove extraneous check. We are not going to return from copyin/out on

2003-03-25 20:13:24 +00:00

kern_switch.c

Adjust code for userland preemptive. Userland can set a quantum in

2003-03-19 05:49:38 +00:00

kern_sx.c

…

kern_synch.c

Adjust code for userland preemptive. Userland can set a quantum in

2003-03-19 05:49:38 +00:00

kern_syscalls.c

…

kern_sysctl.c

Use a shorter and less redundant name for the sysctl tree lock.

2003-03-11 20:01:51 +00:00

kern_tc.c

Including <sys/stdint.h> is (almost?) universally only to be able to use

2003-03-18 08:45:25 +00:00

kern_thread.c

Adjust code for userland preemptive. Userland can set a quantum in

2003-03-19 05:49:38 +00:00

kern_time.c

o fix ppsratecheck to interpret a maxpps of zero as "ignore everything"

2003-02-26 17:16:38 +00:00

kern_timeout.c

Under DIAGNOSTIC, only report expensive timeouts if they are more expensive

2003-02-01 10:06:40 +00:00

kern_uuid.c

SMP locking for ifnet list.

2002-12-22 05:35:03 +00:00

kern_xxx.c

more caddr_t removal.

2002-06-29 02:00:02 +00:00

ksched.c

Move a bunch of flags from the KSE to the thread.

2003-02-17 09:55:10 +00:00

link_elf_obj.c

Back out M_* changes, per decision of the TRB.

2003-02-19 05:47:46 +00:00

link_elf.c

Back out M_* changes, per decision of the TRB.

2003-02-19 05:47:46 +00:00

linker_if.m

…

Make.tags.inc

Finish driving a stake through the heart of netns and the associated

2003-03-05 19:24:24 +00:00

Makefile

Finish driving a stake through the heart of netns and the associated

2003-03-05 19:24:24 +00:00

makesyscalls.sh

The syscall names are string constants, so make them consts.

2002-10-29 15:47:06 +00:00

md4c.c

…

md5c.c

We have memset() and memcpy() in the kernel now, so we don't need to

2002-10-20 22:33:42 +00:00

p1003_1b.c

Use copyout to access user memory.

2003-01-07 20:10:04 +00:00

posix4_mib.c

Rework the sysconf(3) interaction with aio:

2002-11-17 04:15:34 +00:00

sched_4bsd.c

Remove a trailing semicolon in SCHED_QUANTUM definition.

2003-03-24 15:16:21 +00:00

sched_ule.c

- Create a function sched_interact_score() which decides on the

2003-03-04 02:45:59 +00:00

subr_acl_posix1e.c

Bow to the whining masses and change a union back into void *. Retain

2003-01-13 00:33:17 +00:00

subr_autoconf.c

…

subr_blist.c

Back out M_* changes, per decision of the TRB.

2003-02-19 05:47:46 +00:00

subr_bus.c

Make sure we actually have a dev before dereferencing in case someone

2003-03-13 06:29:44 +00:00

subr_clist.c

Back out M_* changes, per decision of the TRB.

2003-02-19 05:47:46 +00:00

subr_clock.c

Split the global timezone structure into two integer fields to

2003-02-03 19:49:35 +00:00

subr_devstat.c

- Add vm_paddr_t, a physical address type. This is required for systems

2003-03-25 00:07:06 +00:00

subr_disk.c

Including <sys/stdint.h> is (almost?) universally only to be able to use

2003-03-18 08:45:25 +00:00

subr_eventhandler.c

Rework the eventhandler locking for hopefully the last time. The scheme

2003-03-11 20:17:00 +00:00

subr_hints.c

…

subr_kobj.c

…

subr_log.c

Gigacommit to improve device-driver source compatibility between

2003-03-03 12:15:54 +00:00

subr_mbuf.c

PHCC[1]:

2003-03-10 20:24:54 +00:00

subr_mchain.c

The "m = m->m_next" that was removed in the revision 1.12 was necessary

2003-02-19 10:12:42 +00:00

subr_module.c

…

subr_param.c

Change hw.physmem and hw.usermem to unsigned long like they used to be

2002-08-30 04:04:37 +00:00

subr_pcpu.c

…

subr_power.c

Use ISO 9X variadic macro format; arguments are not optional, just

2002-07-15 17:17:56 +00:00

subr_prf.c

Including <sys/stdint.h> is (almost?) universally only to be able to use

2003-03-18 08:45:25 +00:00

subr_prof.c

Back out M_* changes, per decision of the TRB.

2003-02-19 05:47:46 +00:00

subr_rman.c

Implement rman_get_device

2003-02-12 07:00:59 +00:00

subr_rtc.c

Split the global timezone structure into two integer fields to

2003-02-03 19:49:35 +00:00

subr_sbuf.c

Back out M_* changes, per decision of the TRB.

2003-02-19 05:47:46 +00:00

subr_scanf.c

Fix mis-indentation.

2002-10-02 09:09:25 +00:00

subr_smp.c

Move a bunch of flags from the KSE to the thread.

2003-02-17 09:55:10 +00:00

subr_taskqueue.c

Introduce a new taskqueue that runs completely free of Giant, and in

2003-02-26 03:15:42 +00:00

subr_trap.c

Fix signal delivering bug for threaded process.

2003-03-11 02:59:50 +00:00

subr_turnstile.c

Remove unused mtx_lock_giant(), mtx_unlock_giant(), related globals

2003-03-23 11:26:11 +00:00

subr_witness.c

- Remove witness_dead and just use witness_watch instead. If witness_watch

2003-03-24 21:03:53 +00:00

subr_xxx.c

- Add vm_paddr_t, a physical address type. This is required for systems

2003-03-25 00:07:06 +00:00

sys_generic.c

Back out M_* changes, per decision of the TRB.

2003-02-19 05:47:46 +00:00

sys_pipe.c

- Add vm_paddr_t, a physical address type. This is required for systems

2003-03-25 00:07:06 +00:00

sys_process.c

Whitespace cleanup.

2003-03-19 00:33:38 +00:00

sys_socket.c

Remove duplicate includes.

2003-02-20 03:26:11 +00:00

syscalls.c

Add a timeout parameter to kse_release.

2003-02-20 08:18:15 +00:00

syscalls.master

Add a timeout parameter to kse_release.

2003-02-20 08:18:15 +00:00

sysv_ipc.c

It is possible for an active aio to prevent shared memory from being

2003-01-13 23:04:32 +00:00

sysv_msg.c

Back out M_* changes, per decision of the TRB.

2003-02-19 05:47:46 +00:00

sysv_sem.c

Replace the at_fork, at_exec, and at_exit functions with the slightly more

2003-03-24 21:15:35 +00:00

sysv_shm.c

Back out M_* changes, per decision of the TRB.

2003-02-19 05:47:46 +00:00

tty_compat.c

…

tty_conf.c

…

tty_cons.c

Don't call make_dev() before we are ready for it.

2003-03-09 20:42:49 +00:00

tty_pty.c

Make TTYHOG tunable.

2003-03-05 08:16:29 +00:00

tty_subr.c

Back out M_* changes, per decision of the TRB.

2003-02-19 05:47:46 +00:00

tty_tty.c

Gigacommit to improve device-driver source compatibility between

2003-03-03 12:15:54 +00:00

tty.c

Make TTYHOG tunable.

2003-03-05 08:16:29 +00:00

uipc_accf.c

Back out M_* changes, per decision of the TRB.

2003-02-19 05:47:46 +00:00

uipc_cow.c

- Add vm_paddr_t, a physical address type. This is required for systems

2003-03-25 00:07:06 +00:00

uipc_domain.c

Fix a spelling error.

2003-03-07 22:47:32 +00:00

uipc_jumbo.c

- Add vm_paddr_t, a physical address type. This is required for systems

2003-03-25 00:07:06 +00:00

uipc_mbuf2.c

Back out M_* changes, per decision of the TRB.

2003-02-19 05:47:46 +00:00

uipc_mbuf.c

In m_dup_pkthdr(), convert the supplied `how' argument into malloc

2003-03-13 09:02:19 +00:00

uipc_proto.c

…

uipc_sem.c

Replace the at_fork, at_exec, and at_exit functions with the slightly more

2003-03-24 21:15:35 +00:00

uipc_sockbuf.c

Missing M_TRYWAIT from so_upcall third argument.

2003-02-21 22:23:40 +00:00

uipc_socket2.c

Missing M_TRYWAIT from so_upcall third argument.

2003-02-21 22:23:40 +00:00

uipc_socket.c

Clean up whitespace, s/register //, refrain from strong urge to ANSIfy.

2003-03-02 15:56:49 +00:00

uipc_syscalls.c

Pass the sf buf to MEXTADD() as the optional argument. This permits

2003-03-16 07:19:12 +00:00

uipc_usrreq.c

s/discriptors/descriptors/

2003-03-23 19:41:34 +00:00

vfs_acl.c

Bow to the whining masses and change a union back into void *. Retain

2003-01-13 00:33:17 +00:00

vfs_aio.c

Replace the at_fork, at_exec, and at_exit functions with the slightly more

2003-03-24 21:15:35 +00:00

vfs_bio.c

- Add vm_paddr_t, a physical address type. This is required for systems

2003-03-25 00:07:06 +00:00

vfs_cache.c

Backout the getcwd changes, a more comprehensive effort will be needed.

2003-03-20 10:40:45 +00:00

vfs_cluster.c

Including <sys/stdint.h> is (almost?) universally only to be able to use

2003-03-18 08:45:25 +00:00

vfs_default.c

- Remove a race between fsync like functions and flushbufqueues() by

2003-03-13 07:19:23 +00:00

vfs_export.c

Back out M_* changes, per decision of the TRB.

2003-02-19 05:47:46 +00:00

vfs_extattr.c

Move the initialization of the vattr flags field in setfflags() to

2003-03-05 23:15:23 +00:00

vfs_init.c

Back out M_* changes, per decision of the TRB.

2003-02-19 05:47:46 +00:00

vfs_lookup.c

Back out M_* changes, per decision of the TRB.

2003-02-19 05:47:46 +00:00

vfs_mount.c

Export the name of the device used to mount the root file system as

2003-02-22 05:01:12 +00:00

vfs_subr.c

We shouldn't assert that a vode is locked in vop_lock_post()

2003-03-22 13:21:54 +00:00

vfs_syscalls.c

Move the initialization of the vattr flags field in setfflags() to

2003-03-05 23:15:23 +00:00

vfs_vnops.c

fp->f_offset doesn't need any protection when it isn't accessed.

2003-03-26 19:21:12 +00:00

vnode_if.src

Temporarily introduce a new VOP_SPECSTRATEGY operation while I try

2003-01-04 22:10:36 +00:00