Robert Watson 84d2b7df26 Add GIANT_REQUIRED and WITNESS sleep warnings to uprintf() and tprintf(), ... as they both interact with the tty code (!MPSAFE) and may sleep if the tty buffer is full (per comment). Modify all consumers of uprintf() and tprintf() to hold Giant around calls into these functions. In most cases, this means adding an acquisition of Giant immediately around the function. In some cases (nfs_timer()), it means acquiring Giant higher up in the callout. With these changes, UFS no longer panics on SMP when either blocks are exhausted or inodes are exhausted under load due to races in the tty code when running without Giant. NB: Some reduction in calls to uprintf() in the svr4 code is probably desirable. NB: In the case of nfs_timer(), calling uprintf() while holding a mutex, or even in a callout at all, is a bad idea, and will generate warnings and potential upset. This needs to be fixed, but was a problem before this change. NB: uprintf()/tprintf() sleeping is generally a bad ideas, as is having non-MPSAFE tty code. MFC after: 1 week		2005-09-19 16:51:43 +00:00
..
bus_if.m
clock_if.m
cpufreq_if.m
device_if.m
genassym.sh
imgact_aout.c	- Neither of our image formats require Giant now that the vm and vfs have	2005-05-03 10:51:38 +00:00
imgact_elf32.c
imgact_elf64.c
imgact_elf.c	Add GIANT_REQUIRED and WITNESS sleep warnings to uprintf() and tprintf(),	2005-09-19 16:51:43 +00:00
imgact_gzip.c
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
init_main.c	Remove mac_create_root_mount() and mpo_create_root_mount(), which	2005-09-19 13:59:57 +00:00
init_sysent.c	Regen.	2005-07-08 15:06:58 +00:00
kern_acct.c
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
kern_clock.c	Use SCTL_MASK32 to determine that the sysctl call is from a 32bit	2005-06-30 17:17:29 +00:00
kern_condvar.c
kern_conf.c	Retire unused dev_named() function.	2005-09-15 08:01:57 +00:00
kern_context.c
kern_cpu.c	Break out the checks for duplicates and absolute settings being too high	2005-09-02 16:32:43 +00:00
kern_descrip.c	Two minor optimizations of fdalloc():	2005-08-26 11:16:39 +00:00
kern_environment.c	Add bounds checking to the setenv part of the kernel environment.	2005-07-31 10:28:35 +00:00
kern_event.c	Fix race condition that caused activation of an event to	2005-09-15 21:10:12 +00:00
kern_exec.c	MFP4:	2005-06-30 19:01:26 +00:00
kern_exit.c	Add witness warnings to panic if a thread tries to exit while holding any	2005-09-02 20:20:01 +00:00
kern_fork.c	Fix the recent panics/LORs/hangs created by my kqueue commit by:	2005-07-01 16:28:32 +00:00
kern_idle.c
kern_intr.c	Don't disallow sleeping for handlers on swi's since some swi handlers	2005-09-15 20:08:21 +00:00
kern_jail.c	Actually only protect mount-point if security.jail.enforce_statfs is set to 2.	2005-06-23 22:13:29 +00:00
kern_kse.c	Add witness warnings to panic if a thread tries to exit while holding any	2005-09-02 20:20:01 +00:00
kern_kthread.c
kern_ktr.c	- Add curthread to the state that ktr is saving. The extra information is	2005-06-10 23:21:29 +00:00
kern_ktrace.c	Close another information leak in ktrace(2): one was able to find active	2005-06-24 12:05:24 +00:00
kern_linker.c	Fix panic when module is compiled in and it is loaded from loader.conf.	2005-05-28 23:20:05 +00:00
kern_lock.c	Print out a warning and a backtrace if we try to unlock a lockmgr that	2005-09-02 15:56:01 +00:00
kern_lockf.c
kern_mac.c	Bump the module versions of the MAC Framework and MAC policy modules	2005-07-14 10:46:03 +00:00
kern_malloc.c	Long overdue, keep up with mbuf.h,v 1.148.	2005-08-02 20:03:23 +00:00
kern_mbuf.c	Define four constants, MBUF_{,MEM,CLUSTER,PACKET,TAG}_MEM_NAME, which	2005-07-17 14:04:03 +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 an assertion to panic if one tries to call mtx_trylock() on a spin	2005-09-02 20:21:49 +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	Fail the module loading process if the currently executing kernel	2005-07-30 09:02:42 +00:00
kern_poll.c	Document flags of a pollrec.	2005-09-06 11:09:18 +00:00
kern_proc.c	Add a sysctl that returns the full path of a process' text file.	2005-04-18 02:10:37 +00:00
kern_prot.c	Introduce p_canwait() and MAC Framework and MAC Policy entry points	2005-04-18 13:36:57 +00:00
kern_resource.c	Giant is no longer required in kern_setrlimit(); remove its acquisition and	2005-06-01 17:52:51 +00:00
kern_sema.c
kern_shutdown.c	Add a new struct buf flag bit, B_PERSISTENT, and use it to tag	2005-09-08 06:30:05 +00:00
kern_sig.c	Fix a bug relavant to debugging, a masked signal unexpectedly interrupts	2005-06-06 05:13:10 +00:00
kern_subr.c
kern_switch.c	In adjustrunqueue(), add code to handle thread migrating case for	2005-08-03 01:23:45 +00:00
kern_sx.c
kern_synch.c	Use low level constructs borrowed from interrupt threads to wait for	2005-05-23 23:01:53 +00:00
kern_syscalls.c
kern_sysctl.c	Drop in a WITNESS_WARN into SYSCTL_IN to make sure that we are	2005-08-08 21:06:42 +00:00
kern_tc.c	Forward declaring static variables as extern is invalid ISO-C. Now that	2005-09-07 10:06:14 +00:00
kern_thr.c	Validate if the value written into {FS,GS}.base is a canonical	2005-07-10 23:31:11 +00:00
kern_thread.c	Remove sleep queue hack, it is no longer needed with current sleep queue.	2005-05-27 04:27:22 +00:00
kern_time.c
kern_timeout.c	Oops, missed adding the required include.	2005-09-15 20:20:36 +00:00
kern_umtx.c
kern_uuid.c	Move the UUID generator into its own function, called kern_uuidgen(),	2005-09-18 21:40:15 +00:00
kern_xxx.c
ksched.c
link_elf_obj.c	Handle vm_map_wire()'s failure.	2005-08-28 05:38:40 +00:00
link_elf.c	Correctly handle vm_map_wire()'s failure. (See also revisions 1.81 and	2005-08-28 04:50:11 +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
p1003_1b.c
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	Move up code for testing KEF_HOLD to avoid ke_cpu being changed unexpectly	2005-08-19 11:51:41 +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	MFp4: Expose device_probe_child()	2005-09-18 01:32:09 +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	- Fix insertions of bios which represent data earlier than anything else	2005-06-15 23:32:07 +00:00
subr_eventhandler.c
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	Move the KDB_STOP_NMI option from opt_global.h to opt_kdb.h	2005-06-29 23:23:16 +00:00
subr_kobj.c	Export a routine, kobj_machdep_init(), that allows platforms	2005-08-07 02:20:35 +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
subr_pcpu.c
subr_power.c
subr_prf.c	Add GIANT_REQUIRED and WITNESS sleep warnings to uprintf() and tprintf(),	2005-09-19 16:51:43 +00:00
subr_prof.c
subr_rman.c	If we are going to	2005-05-06 02:50:00 +00:00
subr_rtc.c
subr_sbuf.c
subr_scanf.c
subr_sleepqueue.c	- Add a new simple facility for marking the current thread as being in a	2005-09-15 19:05:37 +00:00
subr_smp.c	Second part of commit for moving KDB_STOP_NMI from opt_global.h to	2005-06-30 03:38:10 +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	o enable shutdown of taskqueue threads; the thread servicing the queue checks	2005-05-01 00:38:11 +00:00
subr_trap.c
subr_turnstile.c
subr_unit.c
subr_witness.c	- Enforce an implicit lock order that Giant cannot be locked while holding	2005-09-15 19:07:14 +00:00
sys_generic.c	- Add two new system calls: preadv() and pwritev() which are like readv()	2005-07-07 18:17:55 +00:00
sys_pipe.c	Fix the recent panics/LORs/hangs created by my kqueue commit by:	2005-07-01 16:28:32 +00:00
sys_process.c	Fix a LOR between sched_lock and sleep queue lock.	2005-08-19 13:35:34 +00:00
sys_socket.c
syscalls.c	Regen.	2005-07-08 15:06:58 +00:00
syscalls.master	Mark second instance of lchown() MP safe just like the first.	2005-07-08 15:01:13 +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	Change the data type of the upper shared memory limits from a signed	2005-08-06 07:20:18 +00:00
tty_compat.c
tty_conf.c
tty_cons.c
tty_pty.c	Merge the dev_clone and dev_clone_cred event handlers into a single	2005-08-08 19:55:32 +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	Fix the recent panics/LORs/hangs created by my kqueue commit by:	2005-07-01 16:28:32 +00:00
uipc_accf.c	o setsockopt(2) cannot remove accept filter. [1]	2005-06-11 11:59:48 +00:00
uipc_cow.c	Allow sends sent from non page-aligned userspace addresses to be	2005-06-05 17:13:23 +00:00
uipc_domain.c
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	Changes and cleanups to m_sanity():	2005-08-30 21:31:42 +00:00
uipc_proto.c
uipc_sem.c	In sem_forkhook(), don't attempt to generate a copy of the process semaphore	2005-06-08 07:29:22 +00:00
uipc_sockbuf.c	Re-comment sbcompress() to explain what it is it does; it took me	2005-09-18 10:30:10 +00:00
uipc_socket2.c	Re-comment sbcompress() to explain what it is it does; it took me	2005-09-18 10:30:10 +00:00
uipc_socket.c	Add three new read-only socket options, which allow regression tests	2005-09-18 21:08:03 +00:00
uipc_syscalls.c	Add MAC Framework and MAC policy entry point mac_check_socket_create(),	2005-07-05 22:49:10 +00:00
uipc_usrreq.c	Fix two issues which were missed in FreeBSD-SA-05:08.kmem.	2005-05-07 00:41:36 +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	Eliminate inconsistency in the setting of the B_DONE flag. Specifically,	2005-07-20 19:06:06 +00:00
vfs_bio.c	- Use lockmgr_printinfo rather than rolling our own. This introduces a	2005-08-03 05:02:08 +00:00
vfs_cache.c	- Fix a leaked reference to a vnode via v_dd. We rely on cache_purge() and	2005-06-17 01:05:13 +00:00
vfs_cluster.c	Do not use vm_pager_init() to initialize vnode_pbuf_freecnt variable.	2005-08-13 20:21:33 +00:00
vfs_default.c	In vop_stdpathconf(ap) also default for _PC_NAME_MAX and _PC_PATH_MAX.	2005-08-17 06:59:23 +00:00
vfs_export.c	Handle theoretical case of vfs_export being called with both MNT_DELEXPORT and	2005-05-11 18:25:42 +00:00
vfs_extattr.c	Improve the MP safeness associated with the creation of symbolic	2005-09-15 15:03:48 +00:00
vfs_hash.c	Don't retry when vget() returns ENOENT in the nonblocking case due to the	2005-09-12 01:48:57 +00:00
vfs_init.c
vfs_lookup.c	Improve the MP safeness associated with the creation of symbolic	2005-09-15 15:03:48 +00:00
vfs_mount.c	Don't unbusy the devfs mount in vfs_mountroot_try() as it gets accessed	2005-09-02 13:37:54 +00:00
vfs_subr.c	Break out of loop if next buffer pointer has become invalid while flushing	2005-09-16 18:28:12 +00:00
vfs_syscalls.c	Improve the MP safeness associated with the creation of symbolic	2005-09-15 15:03:48 +00:00
vfs_vnops.c	- Replace the series of DEBUG_LOCKS hacks which tried to save the vn_lock	2005-08-03 04:48:22 +00:00
vnode_if.src	Allow EVFILT_VNODE events to work on every filesystem type, not just	2005-06-09 20:20:31 +00:00