John Baldwin 9dddab6fc1 Change the roundrobin implementation in the 4BSD scheduler to trigger a ...

userland preemption directly from hardclock() via sched_clock() when a
thread uses up a full quantum instead of using a periodic timeout to cause
a userland preemption every so often.  This fixes a potential deadlock
when IPI_PREEMPTION isn't enabled where softclock blocks on a lock held
by a thread pinned or bound to another CPU.  The current thread on that
CPU will never be preempted while softclock is blocked.

Note that ULE already drives its round-robin userland preemption from
sched_clock() as well and always enables IPI_PREEMPT.

MFC after:	1 week

2007-10-27 22:07:40 +00:00

..

bus_if.m

o break newbus api: add a new argument of type driver_filter_t to

2007-02-23 12:19:07 +00:00

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

Rework the support for ABIs to override resource limits (used by 32-bit

2007-05-14 22:40:04 +00:00

imgact_gzip.c

…

imgact_shell.c

…

inflate.c

…

init_main.c

Introduce a way to make pure kernal threads.

2007-10-26 08:00:41 +00:00

init_sysent.c

Regenerate.

2007-08-16 05:32:26 +00:00

kern_acct.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

kern_alq.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

kern_clock.c

- Move all of the PS_ flags into either p_flag or td_flags.

2007-09-17 05:31:39 +00:00

kern_condvar.c

Commit 2/14 of sched_lock decomposition.

2007-06-04 23:50:56 +00:00

kern_conf.c

Revert destroy_dev() to the state before destroy_dev_sched() was introduced.

2007-07-05 13:04:59 +00:00

kern_context.c

Further system call comment cleanup:

2007-03-05 13:10:58 +00:00

kern_cpu.c

Always call sched_bind(), even if on the CPU in question. It is wrong to

2007-08-20 06:28:26 +00:00

kern_descrip.c

Remove the now-unused NET_{LOCK,UNLOCK,ASSERT}_GIANT() macros, which

2007-08-06 14:26:03 +00:00

kern_environment.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

kern_event.c

Revert previous commits which I committed by mistake.

2007-07-14 21:23:31 +00:00

kern_exec.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

kern_exit.c

Introduce a way to make pure kernal threads.

2007-10-26 08:00:41 +00:00

kern_fork.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

kern_idle.c

rename the process to 'idle' and 'intr' as per jhb.

2007-10-27 00:52:26 +00:00

kern_intr.c

rename the process to 'idle' and 'intr' as per jhb.

2007-10-27 00:52:26 +00:00

kern_jail.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

kern_kse.c

- Move all of the PS_ flags into either p_flag or td_flags.

2007-09-17 05:31:39 +00:00

kern_kthread.c

Add support for the pre-exisiting module shutdoen handshake.

2007-10-27 00:54:16 +00:00

kern_ktr.c

Remove slightly oddly placed suser() call from the KTR/ALQ setup sysctl:

2006-09-09 16:09:01 +00:00

kern_ktrace.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

kern_linker.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

kern_lock.c

Move lock_profile_object_{init,destroy}() into lock_{init,destroy}().

2007-05-18 15:04:59 +00:00

kern_lockf.c

Do not call free() while holding vnode interlock.

2007-08-07 09:04:50 +00:00

kern_malloc.c

Use vm_offset_t for kmembase and kmemlimit rather than char *, avoiding

2007-06-27 13:39:38 +00:00

kern_mbuf.c

style(9)

2007-10-26 16:33:47 +00:00

kern_mib.c

Revert VMCNT_* operations introduction.

2007-05-31 22:52:15 +00:00

kern_module.c

Remove 'MPSAFE' annotations from the comments above most system calls: all

2007-03-04 22:36:48 +00:00

kern_mtxpool.c

Universally adopt most conventional spelling of acquire.

2007-05-27 20:50:23 +00:00

kern_mutex.c

- Remove the global definition of sched_lock in mutex.h to break

2007-07-18 20:46:06 +00:00

kern_ntptime.c

Only require privilege to set the current time adjustment, not in order to

2007-06-14 18:37:58 +00:00

kern_physio.c

…

kern_pmc.c

…

kern_poll.c

Remove the now-unused NET_{LOCK,UNLOCK,ASSERT}_GIANT() macros, which

2007-08-06 14:26:03 +00:00

kern_priv.c

Continue kernel privilege cleanup for 7.0: unstaticize suser_enabled and

2007-07-02 14:03:29 +00:00

kern_proc.c

- Redefine p_swtime and td_slptime as p_swtick and td_slptick. This

2007-09-21 04:10:23 +00:00

kern_prot.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

kern_resource.c

- Use ruxagg() in calcru() to make sure we have current tick information

2007-07-17 01:08:09 +00:00

kern_rwlock.c

Fix some problems with lock profiling in rw locks:

2007-07-20 08:43:42 +00:00

kern_sema.c

…

kern_shutdown.c

Introduce a way to make pure kernal threads.

2007-10-26 08:00:41 +00:00

kern_sig.c

Implement AUE_CORE, which adds process core dump support into the kernel.

2007-10-26 01:23:07 +00:00

kern_subr.c

Commit 14/14 of sched_lock decomposition.

2007-06-05 00:00:57 +00:00

kern_switch.c

- Fix ULE in kernels without PREEMPTION compiled in by always enabling the

2007-10-08 23:37:28 +00:00

kern_sx.c

Fix sx_try_slock(), so it only fails when there is an exclusive owner.

2007-10-02 14:48:48 +00:00

kern_synch.c

- Restore historical yield() behavior by manually lowering priority and

2007-10-08 23:40:40 +00:00

kern_syscalls.c

Make system call modules a bit more robust:

2006-08-01 16:32:20 +00:00

kern_sysctl.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

kern_tc.c

Despite several examples in the kernel, the third argument of

2007-06-04 18:25:08 +00:00

kern_thr.c

Add thr_kill2 syscall which sends a signal to a thread in another process.

2007-08-16 05:26:42 +00:00

kern_thread.c

Introduce a way to make pure kernal threads.

2007-10-26 08:00:41 +00:00

kern_time.c

rufetch and calcru sometimes should be called atomically together.

2007-06-09 21:48:44 +00:00

kern_timeout.c

Remove the definition and implementation of 'CALLOUT_NETGIANT', a now- (and

2007-09-15 12:33:24 +00:00

kern_umtx.c

Backout experimental adaptive-spin umtx code.

2007-06-06 07:35:08 +00:00

kern_uuid.c

Correct typo.

2007-04-23 12:53:00 +00:00

kern_xxx.c

Further system call comment cleanup:

2007-03-05 13:10:58 +00:00

ksched.c

Commit 14/14 of sched_lock decomposition.

2007-06-05 00:00:57 +00:00

link_elf_obj.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

link_elf.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

linker_if.m

…

Make.tags.inc

Remove netkey directory from cscope/TAGs generation and replace

2007-07-05 08:55:14 +00:00

Makefile

- Remove UMAP filesystem. It was disconnected from build three years ago,

2007-06-25 05:06:57 +00:00

makesyscalls.sh

Add support for COMPAT6 syscalls.

2007-07-04 22:38:28 +00:00

md4c.c

…

md5c.c

Fix a panic on sparc64 related to inproper aligment - we cannot assume,

2006-03-30 18:45:50 +00:00

p1003_1b.c

- Restore historical sched_yield() behavior by changing sched_relinquish()

2007-10-08 23:45:24 +00:00

posix4_mib.c

Fix mispatch of includes list; allows my kernel to build successfully.

2006-11-12 03:34:03 +00:00

sched_4bsd.c

Change the roundrobin implementation in the 4BSD scheduler to trigger a

2007-10-27 22:07:40 +00:00

sched_ule.c

Cut over to ULE on PowerPC

2007-10-23 00:52:25 +00:00

serdev_if.m

MFp4: Add the ipend() method to the serdev I/F to allow umbrella

2006-04-23 22:12:39 +00:00

subr_acl_posix1e.c

Eliminate now-unused SUSER_ALLOWJAIL arguments to priv_check_cred(); in

2007-06-12 00:12:01 +00:00

subr_autoconf.c

Add a mutex to protect the list of interrupt config hooks. We do assume

2006-07-19 18:53:56 +00:00

subr_blist.c

…

subr_bus.c

First in a series of changes to remove the now-unused Giant compatibility

2007-07-27 11:59:57 +00:00

subr_clist.c

…

subr_clock.c

If clock_ct_to_ts fails to convert time time from the real time clock,

2007-07-23 09:42:32 +00:00

subr_devstat.c

…

subr_disk.c

Add a new I/O request - BIO_FLUSH, which basically tells providers below to

2006-10-31 21:11:21 +00:00

subr_eventhandler.c

…

subr_fattime.c

Better naming of fattime conversion functions, they do convert to timespec

2006-10-24 10:27:23 +00:00

subr_firmware.c

Cleanup and document the implementation of firmware(9) based on

2007-02-15 17:21:31 +00:00

subr_hints.c

Use a sleep mutex instead of an sx lock for the kernel environment. This

2006-07-09 21:42:58 +00:00

subr_kdb.c

- Move all of the PS_ flags into either p_flag or td_flags.

2007-09-17 05:31:39 +00:00

subr_kobj.c

…

subr_lock.c

Currently the LO_NOPROFILE flag (which is masked on upper level code by

2007-09-14 01:12:39 +00:00

subr_log.c

…

subr_mbpool.c

Add parens around *free in *free++ in mbp_count() so that mbp_count()

2007-05-27 17:38:36 +00:00

subr_mchain.c

…

subr_module.c

…

subr_msgbuf.c

…

subr_param.c

Export maxswzone, maxbcache, maxtsiz, dfldsiz, maxdsiz, dflssiz, maxssiz,

2007-10-16 10:40:53 +00:00

subr_pcpu.c

…

subr_power.c

…

subr_prf.c

Instead of doing comparisons using the pcpu area to see if

2007-03-08 06:44:34 +00:00

subr_prof.c

Commit 14/14 of sched_lock decomposition.

2007-06-05 00:00:57 +00:00

subr_rman.c

Complete removal of restriction about overlaps to rman_manage_region:

2007-04-28 07:37:49 +00:00

subr_rtc.c

Use utc_offset() where applicable, and hide the internals of it

2006-10-02 18:23:37 +00:00

subr_sbuf.c

…

subr_scanf.c

…

subr_sleepqueue.c

subr_sleepqueue.c presents a thread lock missing which leads to dangerous

2007-09-13 09:12:36 +00:00

subr_smp.c

This is a follow-up, cleaning-up commit about recent changes involving

2007-09-11 22:54:09 +00:00

subr_stack.c

Correct typos

2006-05-28 22:15:28 +00:00

subr_taskqueue.c

Rename the kthread_xxx (e.g. kthread_create()) calls

2007-10-20 23:23:23 +00:00

subr_trap.c

- Move all of the PS_ flags into either p_flag or td_flags.

2007-09-17 05:31:39 +00:00

subr_turnstile.c

- Include opt_sched.h for SCHED_STATS.

2007-06-12 23:27:31 +00:00

subr_unit.c

Since cdev mutex is after system map mutex in global lock order, free()

2007-07-04 06:56:58 +00:00

subr_witness.c

Fix some entries in the locks static table of witness.

2007-09-20 20:38:43 +00:00

sys_generic.c

Add freebsd6_ wrappers for mmap/lseek/pread/pwrite/truncate/ftruncate

2007-07-04 22:57:21 +00:00

sys_pipe.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

sys_process.c

- Fix from pr kern/115469; Don't redeliver a signal once it has been

2007-10-09 00:03:39 +00:00

sys_socket.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

syscalls.c

Regenerate.

2007-08-16 05:32:26 +00:00

syscalls.master

Put comments about syscalls by the correct ones, and use the correct syscall

2007-10-19 19:17:53 +00:00

systrace_args.c

Regenerate.

2007-08-16 05:32:26 +00:00

sysv_ipc.c

Eliminate now-unused SUSER_ALLOWJAIL arguments to priv_check_cred(); in

2007-06-12 00:12:01 +00:00

sysv_msg.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

sysv_sem.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

sysv_shm.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

tty_compat.c

…

tty_conf.c

…

tty_cons.c

Revert UF_OPENING workaround for CURRENT.

2007-05-31 11:51:53 +00:00

tty_pts.c

Fix bad function type passed to destroy_dev_sched_cb().

2007-07-05 05:54:47 +00:00

tty_pty.c

Use make_dev_credf(MAKEDEV_REF) instead of make_dev() from pty clone handler.

2007-07-03 17:45:52 +00:00

tty_subr.c

…

tty_tty.c

Lock Giant and proctree lock around dereferencing p_session->s_ttyvp->v_rdev.

2007-07-03 17:46:37 +00:00

tty.c

ttyfree() frees the cdev(). But if there are pending kevents,

2007-07-20 09:41:54 +00:00

uipc_accf.c

…

uipc_cow.c

…

uipc_debug.c

sblock() implements a sleep lock by interlocking SB_WANT and SB_LOCK flags

2007-05-03 14:42:42 +00:00

uipc_domain.c

Remove the now-unused NET_{LOCK,UNLOCK,ASSERT}_GIANT() macros, which

2007-08-06 14:26:03 +00:00

uipc_mbuf2.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

uipc_mbuf.c

This patch adds an M_NOFREE flag which allows one to mark an mbuf as

2007-10-06 21:42:39 +00:00

uipc_mqueue.c

Eliminate now-unused SUSER_ALLOWJAIL arguments to priv_check_cred(); in

2007-06-12 00:12:01 +00:00

uipc_sem.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

uipc_sockbuf.c

Set the NFS server sockbuf high watermarks to the system defaults

2007-10-12 03:56:27 +00:00

uipc_socket.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

uipc_syscalls.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

uipc_usrreq.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

vfs_acl.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

vfs_aio.c

Rename the kthread_xxx (e.g. kthread_create()) calls

2007-10-20 23:23:23 +00:00

vfs_bio.c

Rename the kthread_xxx (e.g. kthread_create()) calls

2007-10-20 23:23:23 +00:00

vfs_cache.c

Fix some locking cases where we ask for exclusively locked vnode, but we get

2007-09-21 10:16:56 +00:00

vfs_cluster.c

- Move rusage from being per-process in struct pstats to per-thread in

2007-06-01 01:12:45 +00:00

vfs_default.c

Since renaming of vop_lock to _vop_lock, pre- and post-condition

2007-05-18 13:02:13 +00:00

vfs_export.c

Move vnode-to-file-handle translation from vfs_vptofh to vop_vptofh method.

2007-02-15 22:08:35 +00:00

vfs_extattr.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

vfs_hash.c

Make insmntque() externally visibile and allow it to fail (e.g. during

2007-03-13 01:50:27 +00:00

vfs_init.c

Remove VFS_VPTOFH entirely. API is already broken and it is good time to

2007-02-16 17:32:41 +00:00

vfs_lookup.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

vfs_mount.c

In nmount(), if MNT_ROOT is in the mount flags, filter it

2007-10-27 15:59:18 +00:00

vfs_subr.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

vfs_syscalls.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

vfs_vnops.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

vnode_if.src

Revert UF_OPENING workaround for CURRENT.

2007-05-31 11:51:53 +00:00