d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
freebsd-skq/sys/kern
History
silby bba10d998e Put some concrete limits on pipe memory consumption: 
- Limit the total number of pipes so that we do not
  exhaust all vm objects in the kernel map.  When
  this limit is reached, a ratelimited message will
  be printed to the console.

- Put a soft limit on the amount of memory consumable
  by pipes.  Once the limit has been reached, all new
  pipes will be limited to 4K in size, rather than the
  default of 16K.

- Put a limit on the number of pages that may be used
  for high speed page flipping in order to reduce the
  amount of wired memory.  Pipe writes that occur
  while this limit is exceeded will fall back to
  non-page flipping mode.

The above values are auto-tuned in subr_param.c and
are scaled to take into account both the size of
physical memory and the size of the kernel map.

These limits help to reduce the "kernel resources exhausted"
panics that could be caused by opening a large
number of pipes.  (Pipes alone are no longer able
to exhaust all resources, but other kernel memory hogs
in league with pipes may still be able to do so.)

PR:			53627
Ideas / comments from:	hsu, tjr, dillon@apollo.backplane.com
MFC after:		1 week
2003-07-08 04:02:31 +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
Use __FBSDID().
2003-06-11 00:56:59 +00:00
imgact_elf32.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
imgact_elf64.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
imgact_elf.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
imgact_gzip.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
imgact_shell.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
inflate.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
init_main.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
init_sysent.c
Regen from syscalls.master:1.149, addition of extended attribute
2003-06-04 03:50:20 +00:00
kern_acct.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
kern_acl.c
Add a f_vnode field to struct file.
2003-06-22 08:41:43 +00:00
kern_alq.c
Add an explicit credential argument to alq_open() to allow the caller to
2003-06-22 22:28:56 +00:00
kern_clock.c
Fix this to build on alpha. Build test successful.
2003-06-27 08:35:05 +00:00
kern_condvar.c
Allow SA process unblocks a thread blocked in condition variable.
2003-07-02 01:19:15 +00:00
kern_conf.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
kern_context.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
kern_descrip.c
Use the f_vnode field to tell which file descriptors have a vnode.
2003-07-04 12:20:27 +00:00
kern_environment.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
kern_event.c
Initialize struct fileops with C99 sparse initialization.
2003-06-18 18:16:40 +00:00
kern_exec.c
Rename P_THREADED to P_SA. P_SA means a process is using scheduler
2003-06-15 00:31:24 +00:00
kern_exit.c
Rename P_THREADED to P_SA. P_SA means a process is using scheduler
2003-06-15 00:31:24 +00:00
kern_fork.c
Add a ratelimited message of the form
2003-06-19 05:57:25 +00:00
kern_idle.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
kern_intr.c
Make swi_vm be INTR_MPSAFE. On all platforms, it is only used to activate
2003-07-01 16:00:38 +00:00
kern_jail.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
kern_kse.c
kse_thr_interrupt should target the thread, specifically.
2003-07-04 01:41:32 +00:00
kern_kthread.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
kern_ktr.c
Add an explicit credential argument to alq_open() to allow the caller to
2003-06-22 22:28:56 +00:00
kern_ktrace.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
kern_linker.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
kern_lock.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
kern_lockf.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
kern_mac.c
Redesign the externalization APIs from the MAC Framework to
2003-06-23 01:26:34 +00:00
kern_malloc.c
Don't overflow when calculating vm_kmem_size. This fixes kmem_map
2003-06-11 05:18:59 +00:00
kern_mib.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
kern_module.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
kern_mtxpool.c
Style(9).
2003-06-13 19:39:21 +00:00
kern_mutex.c
- Add comments about the maintenance of the per-thread list of contested
2003-07-02 16:14:09 +00:00
kern_ntptime.c
During a positive leap second, the tai_time offset should be
2003-06-25 20:56:40 +00:00
kern_physio.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
kern_poll.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
kern_proc.c
Drop the proc lock around SYSCTL_OUT in the no-threads case.
2003-06-17 19:14:00 +00:00
kern_prot.c
In setpgrp(), don't assume a pgrp won't exist if the provided pgid is the same
2003-07-04 02:21:28 +00:00
kern_resource.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
kern_sema.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
kern_shutdown.c
Don't overwrite the static panicstr buffer for secondary and further
2003-06-15 11:43:00 +00:00
kern_sig.c
Make the conditional, which decides what siglist to put a signal on,
2003-07-05 08:37:40 +00:00
kern_subr.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
kern_switch.c
Rename P_THREADED to P_SA. P_SA means a process is using scheduler
2003-06-15 00:31:24 +00:00
kern_sx.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
kern_synch.c
o Change kse_thr_interrupt to allow send a signal to a specified thread,
2003-06-28 08:29:05 +00:00
kern_syscalls.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
kern_sysctl.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
kern_tc.c
typo fix in comment.
2003-07-02 08:01:52 +00:00
kern_thr.c
style(9)
2003-07-04 06:59:28 +00:00
kern_thread.c
kse_thr_interrupt should target the thread, specifically.
2003-07-04 01:41:32 +00:00
kern_time.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
kern_timeout.c
Don't put callout_lock under #ifdef DIAGNOSTIC despite the fact that it
2003-06-20 08:39:04 +00:00
kern_umtx.c
I was so happy I found the semi-colon from hell that I didn't
2003-07-04 23:28:42 +00:00
kern_uuid.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
kern_xxx.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
ksched.c
Use __FBSDID().
2003-06-11 06:34:30 +00:00
link_elf_obj.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
link_elf.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
linker_if.m
…
Make.tags.inc
…
Makefile
…
makesyscalls.sh
- Include umtx.h in files generated by makesyscalls.sh
2003-04-01 01:12:24 +00:00
md4c.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
md5c.c
Use le32dec() instead of le32toh() because we are not guaranteed to have
2003-05-05 07:22:35 +00:00
p1003_1b.c
Use __FBSDID().
2003-06-11 06:34:30 +00:00
posix4_mib.c
Use __FBSDID().
2003-06-11 06:34:30 +00:00
sched_4bsd.c
Rename P_THREADED to P_SA. P_SA means a process is using scheduler
2003-06-15 00:31:24 +00:00
sched_ule.c
- Clean up an unused variable.
2003-07-07 21:08:28 +00:00
subr_acl_posix1e.c
Add a f_vnode field to struct file.
2003-06-22 08:41:43 +00:00
subr_autoconf.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
subr_blist.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
subr_bus.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
subr_clist.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
subr_clock.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
subr_devstat.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
subr_disk.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
subr_eventhandler.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
subr_hints.c
Add a resource_disabled() helper function that returns true (non-zero) if
2003-07-02 16:01:38 +00:00
subr_kobj.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
subr_log.c
Replace the code for reading and writing the kernel message buffer
2003-06-22 02:18:31 +00:00
subr_mbuf.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
subr_mchain.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
subr_module.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
subr_msgbuf.c
Replace the code for reading and writing the kernel message buffer
2003-06-22 02:18:31 +00:00
subr_param.c
Put some concrete limits on pipe memory consumption:
2003-07-08 04:02:31 +00:00
subr_pcpu.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
subr_power.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
subr_prf.c
When DDB is active, always send printf() output directly to the
2003-06-22 03:20:24 +00:00
subr_prof.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
subr_rman.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
subr_rtc.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
subr_sbuf.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
subr_scanf.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
subr_smp.c
Document some sysctl variables.
2003-06-12 19:46:51 +00:00
subr_taskqueue.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
subr_trap.c
o Change kse_thr_interrupt to allow send a signal to a specified thread,
2003-06-28 08:29:05 +00:00
subr_turnstile.c
- Add comments about the maintenance of the per-thread list of contested
2003-07-02 16:14:09 +00:00
subr_witness.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
subr_xxx.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
sys_generic.c
Introduce a new flag on a file descriptor: DFLAG_SEEKABLE and use that
2003-06-18 19:53:59 +00:00
sys_pipe.c
Put some concrete limits on pipe memory consumption:
2003-07-08 04:02:31 +00:00
sys_process.c
Add vm object locking.
2003-06-11 06:43:48 +00:00
sys_socket.c
Initialize struct fileops with C99 sparse initialization.
2003-06-18 18:16:40 +00:00
syscalls.c
Regen from syscalls.master:1.149, addition of extended attribute
2003-06-04 03:50:20 +00:00
syscalls.master
o Change kse_thr_interrupt to allow send a signal to a specified thread,
2003-06-28 08:29:05 +00:00
sysv_ipc.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
sysv_msg.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
sysv_sem.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
sysv_shm.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
tty_compat.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
tty_conf.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
tty_cons.c
Use a new message buffer `consmsgbuf' to forward messages to a
2003-06-22 02:54:33 +00:00
tty_pty.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
tty_subr.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
tty_tty.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
tty.c
Use a new message buffer `consmsgbuf' to forward messages to a
2003-06-22 02:54:33 +00:00
uipc_accf.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
uipc_cow.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
uipc_domain.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
uipc_jumbo.c
Lock the vm object when removing a page.
2003-06-11 21:23:04 +00:00
uipc_mbuf2.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
uipc_mbuf.c
Hide the m_defrag* statistics under MBUF_STRESS_TEST, there seems
2003-06-17 02:34:40 +00:00
uipc_proto.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
uipc_sem.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
uipc_sockbuf.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
uipc_socket2.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
uipc_socket.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
uipc_syscalls.c
VOP_GETVOBJECT() wants to be called with the vnode lock held.
2003-06-19 03:55:01 +00:00
uipc_usrreq.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
vfs_acl.c
Add a f_vnode field to struct file.
2003-06-22 08:41:43 +00:00
vfs_aio.c
Add a f_vnode field to struct file.
2003-06-22 08:41:43 +00:00
vfs_bio.c
Initialize b_saveaddr when we hand out buffers
2003-06-20 08:26:38 +00:00
vfs_cache.c
Make the VFS cache use zones instead of malloc(9). This results in a
2003-06-13 08:46:13 +00:00
vfs_cluster.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
vfs_default.c
I have not had any reports of trouble for a long time, so remove the
2003-06-15 19:49:14 +00:00
vfs_export.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
vfs_extattr.c
Use the f_vnode field to tell which file descriptors have a vnode.
2003-07-04 12:20:27 +00:00
vfs_init.c
Initialize struct vfsops C99-sparsely.
2003-06-12 20:48:38 +00:00
vfs_lookup.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
vfs_mount.c
Add a new mount flag MNT_BYFSID that can be used to unmount a file
2003-07-01 17:40:23 +00:00
vfs_subr.c
Use __FBSDID().
2003-06-11 00:56:59 +00:00
vfs_syscalls.c
Use the f_vnode field to tell which file descriptors have a vnode.
2003-07-04 12:20:27 +00:00
vfs_vnops.c
Prefer the vop_rmextattr() vnode operation for removing extended
2003-06-22 23:03:07 +00:00
vnode_if.src
Expose vop_rmextattr as an explicit operation at the vnode operation
2003-06-22 22:45:24 +00:00