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freebsd-skq/sys/kern
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Matt Joras 2ca45184dc Introduce EVENTHANDLER_LIST and some users. 
This introduces a facility to EVENTHANDLER(9) for explicitly defining a
reference to an event handler list. This is useful since previously all
invokers of events had to do a locked traversal of the global list of
event handler lists in order to find the appropriate event handler list.
By keeping a pointer to the appropriate list an invoker can avoid this
traversal completely. The pointer is initialized with SYSINIT(9) during
the eventhandler stage. Users registering interest in events do not need
to know if the event is backed by such a list, since the list is added
to the global list of lists. As with lists that are not pre-defined it
is safe to register for the events before the list has been created.

This converts the process_* and thread_* events to using the new
facility, as these are events whose locked traversals end up showing up
significantly in ports build workflows (and presumably other workflows
with many short lived threads/procs). It may be advantageous to convert
other events to using the new facility.

The el_flags field is now unused, but leave it be so that this revision
can be MFC'd.

Reviewed by:	bdrewery, markj, mjg
Approved by:	rstone (mentor)
In collaboration with:  ian
MFC after:      4 weeks
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D12814
2017-11-09 22:51:48 +00:00
..
bus_if.m "Buses" is the preferred plural of "bus" 2017-01-15 17:54:01 +00:00
capabilities.conf allow posix_fallocate in capability mode 2017-10-12 15:45:53 +00:00
clock_if.m
cpufreq_if.m
device_if.m
genassym.sh Don't prefix zero with 0x in assym.s. 2017-04-13 15:43:44 +00:00
imgact_aout.c Revert r323722. A better fix will be committed shortly, as well as 2017-09-28 08:38:24 +00:00
imgact_binmisc.c tighten buffer bounds in imgact_binmisc_populate_interp 2017-03-21 18:02:14 +00:00
imgact_elf32.c
imgact_elf64.c
imgact_elf.c Add AT_HWCAP2 ELF auxiliary vector. 2017-10-21 12:05:01 +00:00
imgact_gzip.c
imgact_shell.c ANSI-fy exec_shell_imgact(). 2017-11-04 15:41:08 +00:00
inflate.c Remove register keyword from sys/ and ANSIfy prototypes 2017-05-17 00:34:34 +00:00
init_main.c Introduce EVENTHANDLER_LIST and some users. 2017-11-09 22:51:48 +00:00
init_sysent.c regen init_sysent.c r324560 2017-10-12 15:48:37 +00:00
kern_acct.c Commit the 64-bit inode project. 2017-05-23 09:29:05 +00:00
kern_alq.c
kern_clock.c Remove register keyword from sys/ and ANSIfy prototypes 2017-05-17 00:34:34 +00:00
kern_clocksource.c Remove cpu_deepest_sleep variable. 2017-02-24 16:11:55 +00:00
kern_condvar.c Introduce SCHEDULER_STOPPED_TD for use when the thread pointer was already read 2017-02-17 06:45:04 +00:00
kern_conf.c Undo r309891. Konstantin is right in that this condition normally 2016-12-12 19:11:04 +00:00
kern_cons.c Renumber license clauses in sys/kern to avoid skipping #3 2016-09-15 13:16:20 +00:00
kern_context.c
kern_cpu.c
kern_cpuset.c Fix size to copyout(9) for cpuset_getid(2). 2017-08-22 20:46:29 +00:00
kern_ctf.c Fix improper use of "its". 2016-11-08 23:59:41 +00:00
kern_descrip.c ddb show files: fix up file types and whitespace 2017-06-14 07:46:52 +00:00
kern_dtrace.c Sprinkle __read_frequently on few obvious places. 2017-09-06 20:33:33 +00:00
kern_dump.c Move kernel dump offset tracking into MI code. 2017-10-18 15:38:05 +00:00
kern_environment.c
kern_et.c Add labels to sysctls related to clocks. 2016-12-14 12:56:58 +00:00
kern_event.c Do not cast struct kevent_args or struct freebsd11_kevent_args to 2017-06-29 14:40:33 +00:00
kern_exec.c Introduce EVENTHANDLER_LIST and some users. 2017-11-09 22:51:48 +00:00
kern_exit.c Introduce EVENTHANDLER_LIST and some users. 2017-11-09 22:51:48 +00:00
kern_fail.c Avoid open-coding PRI_UNCHANGED. 2017-05-18 18:24:11 +00:00
kern_ffclock.c
kern_fork.c Introduce EVENTHANDLER_LIST and some users. 2017-11-09 22:51:48 +00:00
kern_gzio.c Add support for compressed kernel dumps. 2017-10-25 00:51:00 +00:00
kern_hhook.c
kern_idle.c
kern_intr.c Extend cpuset_get/setaffinity() APIs 2017-05-03 18:41:08 +00:00
kern_jail.c Jails: Optionally prevent jailed root from binding to privileged ports 2017-06-06 02:15:00 +00:00
kern_khelp.c
kern_kthread.c
kern_ktr.c Fix a couple of comment typos 2017-08-15 02:21:02 +00:00
kern_ktrace.c Ktracing kevent(2) calls with unusual arguments might leads to an 2017-03-12 13:48:24 +00:00
kern_linker.c sysctl-s in a module should be accessible only when the module is initialized 2017-10-05 12:32:14 +00:00
kern_lock.c lockmgr: implement fast path 2017-02-12 09:49:44 +00:00
kern_lockf.c put very expensive sanity checks of advisory locks under DIAGNOSTIC 2017-01-30 15:20:13 +00:00
kern_lockstat.c Sprinkle __read_frequently on few obvious places. 2017-09-06 20:33:33 +00:00
kern_loginclass.c Fixup r325264, take #2 2017-11-01 06:46:58 +00:00
kern_malloc.c Renumber license clauses in sys/kern to avoid skipping #3 2016-09-15 13:16:20 +00:00
kern_mbuf.c Improvements to sendfile(2) mbuf free routine. 2017-10-09 21:06:16 +00:00
kern_mib.c All these files need sys/vmmeter.h, but now they got it implicitly 2017-04-17 17:07:00 +00:00
kern_module.c
kern_mtxpool.c
kern_mutex.c mtx: implement thread lock fastpath 2017-10-21 22:40:09 +00:00
kern_ntptime.c ANSIfy kern_ntptime.c 2017-01-25 20:22:32 +00:00
kern_numa.c Remove unneeded include of vm_phys.h. 2017-04-17 16:51:04 +00:00
kern_osd.c
kern_physio.c
kern_pmc.c Cast values to (int) before comparing them to the range of the 2017-02-24 01:39:12 +00:00
kern_poll.c
kern_priv.c
kern_proc.c Introduce EVENTHANDLER_LIST and some users. 2017-11-09 22:51:48 +00:00
kern_procctl.c reaper: Make REAPER_KILL_SUBTREE actually work. 2016-12-14 22:49:20 +00:00
kern_prot.c Add security.bsd.see_jail_proc 2017-05-23 16:59:24 +00:00
kern_racct.c try to fix RACCT_RSS accounting 2017-02-14 13:54:05 +00:00
kern_rangelock.c
kern_rctl.c
kern_resource.c Save on uihash table locking by checking if the caller already uses the struct 2017-11-01 05:51:20 +00:00
kern_rmlock.c Corrected misspelled versions of rendezvous. 2017-04-09 02:00:03 +00:00
kern_rwlock.c rwlock: fix up compilation without KDTRACE_HOOKS after r324787 2017-11-06 05:14:05 +00:00
kern_sdt.c sdt: make all sdt probe sites test one variable 2017-10-22 20:22:23 +00:00
kern_sema.c
kern_sendfile.c Address two problems with sendfile(..., SF_NOCACHE) and apply one 2017-10-13 16:31:50 +00:00
kern_sharedpage.c
kern_shutdown.c Handle RB_POWERCYCLE in the MI part of the kernel 2017-10-25 15:30:44 +00:00
kern_sig.c Re-evaluate thread' signal mask after ptracestop(). 2017-10-16 20:21:51 +00:00
kern_switch.c Add comments explaining unobvious td_critnest adjustments in 2017-01-22 19:41:42 +00:00
kern_sx.c locks: take the number of readers into account when waiting 2017-10-05 19:18:02 +00:00
kern_synch.c - Remove 'struct vmmeter' from 'struct pcpu', leaving only global vmmeter 2017-04-17 17:34:47 +00:00
kern_syscalls.c
kern_sysctl.c sysctl: only take mem lock if oldlen is > 4 * PAGE_SIZE 2017-10-19 01:38:31 +00:00
kern_tc.c The th_bintime, th_microtime and th_nanotime members of the timehand 2017-10-11 11:03:11 +00:00
kern_thr.c Defer ptracestop() signals that cannot be delivered immediately 2017-02-20 15:53:16 +00:00
kern_thread.c Introduce EVENTHANDLER_LIST and some users. 2017-11-09 22:51:48 +00:00
kern_time.c Add clock_nanosleep() 2017-03-19 00:51:12 +00:00
kern_timeout.c Remove register keyword from sys/ and ANSIfy prototypes 2017-05-17 00:34:34 +00:00
kern_umtx.c Convert explicit panic() call to assert. 2017-11-04 10:49:34 +00:00
kern_uuid.c Hint at the intended usage for the "ll" field of struct uuid_private. 2017-06-13 15:37:04 +00:00
kern_xxx.c Remove register keyword from sys/ and ANSIfy prototypes 2017-05-17 00:34:34 +00:00
ksched.c
link_elf_obj.c Reduce stack usage in link_elf_load_file(), allocating struct nameidata. 2017-03-09 00:45:15 +00:00
link_elf.c
linker_if.m
Make.tags.inc
Makefile
makesyscalls.sh Commit the 64-bit inode project. 2017-05-23 09:29:05 +00:00
md4c.c ANSIfy sys/kern/md4c.c 2017-11-05 19:49:44 +00:00
md5c.c
msi_if.m
p1003_1b.c
pic_if.m
posix4_mib.c Make p1003_1b.aio_listio_max a tunable 2017-08-08 16:14:31 +00:00
sched_4bsd.c Remove register keyword from sys/ and ANSIfy prototypes 2017-05-17 00:34:34 +00:00
sched_ule.c Don't take Giant for SMP status and cpu topology sysctls. 2017-10-18 22:00:44 +00:00
serdev_if.m
stack_protector.c
subr_acl_nfs4.c
subr_acl_posix1e.c
subr_autoconf.c Add config_intrhook_oneshot(): schedule an intrhook function and unregister 2017-08-13 18:10:24 +00:00
subr_blist.c The recent change to initialization of blists (r324420) relied on '-1' 2017-10-09 18:19:06 +00:00
subr_bufring.c
subr_bus_dma.c Add CAM/NVMe support for CAM_DATA_SG 2017-08-29 15:29:57 +00:00
subr_bus.c Add eventhandler notifications for newbus device attach/detach. 2017-10-08 17:33:49 +00:00
subr_busdma_bufalloc.c
subr_capability.c
subr_clock.c Add common code to support realtime clocks that store year without century. 2017-07-23 21:28:00 +00:00
subr_counter.c Zero return value when counter_rate() switches over to next second and 2016-12-13 20:11:45 +00:00
subr_devmap.c o Replace __riscv__ with __riscv 2017-08-07 14:09:57 +00:00
subr_devstat.c
subr_disk.c
subr_dummy_vdso_tc.c
subr_eventhandler.c Introduce EVENTHANDLER_LIST and some users. 2017-11-09 22:51:48 +00:00
subr_fattime.c
subr_firmware.c Fix improper use of "its". 2016-11-08 23:59:41 +00:00
subr_gtaskqueue.c Fix "taskqgroup_attach: setaffinity failed: 3" with iflib drivers 2017-10-05 14:43:30 +00:00
subr_hash.c Renumber license clauses in sys/kern to avoid skipping #3 2016-09-15 13:16:20 +00:00
subr_hints.c
subr_intr.c Fix compile error with option DEBUG. This is fallout from some long-ago 2017-08-16 16:51:55 +00:00
subr_kdb.c Change kdb_active type to u_char. 2017-10-22 13:42:56 +00:00
subr_kobj.c - Also outside of the KOBJOPLOOKUP macro - which in turn is used by 2017-05-08 21:08:39 +00:00
subr_lock.c locks: follow up r313386 2017-02-07 16:01:07 +00:00
subr_log.c Renumber license clauses in sys/kern to avoid skipping #3 2016-09-15 13:16:20 +00:00
subr_mchain.c Renumber license clauses in sys/kern to avoid skipping #3 2016-09-15 13:16:20 +00:00
subr_module.c
subr_msgbuf.c
subr_param.c Allow sysctl kern.vm_guest to return bhyve when running under bhyve. 2017-06-08 04:02:14 +00:00
subr_pcpu.c Renumber license clauses in sys/kern to avoid skipping #3 2016-09-15 13:16:20 +00:00
subr_pctrie.c Make the number of children for pctrie node available outside subr_pctrie.c. 2017-07-27 16:40:14 +00:00
subr_power.c
subr_prf.c kvprintf %b enhancements 2017-07-12 07:30:14 +00:00
subr_prof.c Renumber license clauses in sys/kern to avoid skipping #3 2016-09-15 13:16:20 +00:00
subr_rman.c
subr_rtc.c Add clock_schedule(), a feature that allows realtime clock drivers to 2017-07-31 01:18:21 +00:00
subr_sbuf.c An off-by-one error exists in sbuf_vprintf()'s use of SBUF_HASROOM() when an 2017-08-18 02:06:28 +00:00
subr_scanf.c Renumber license clauses in sys/kern to avoid skipping #3 2016-09-15 13:16:20 +00:00
subr_sfbuf.c subr_sfbus.c need sys/proc.h for struct thread definition. 2017-02-07 17:31:24 +00:00
subr_sglist.c Add sglist_append_sglist(). 2017-05-16 23:31:52 +00:00
subr_sleepqueue.c Make the sleepq chain hash size configurable per-arch and bump on amd64. 2017-10-22 20:43:50 +00:00
subr_smp.c Don't take Giant for SMP status and cpu topology sysctls. 2017-10-18 22:00:44 +00:00
subr_stack.c Let stack_create(9) take a malloc flags argument. 2017-10-06 21:52:28 +00:00
subr_syscall.c Move struct syscall_args syscall arguments parameters container into 2017-06-12 21:03:23 +00:00
subr_taskqueue.c Add taskqueue_enqueue_timeout_sbt(), because sometimes you want more control 2017-07-31 00:54:50 +00:00
subr_terminal.c Oops, my fix for bright colors broke bright black some more (in cases 2017-03-27 10:48:28 +00:00
subr_trap.c - Remove 'struct vmmeter' from 'struct pcpu', leaving only global vmmeter 2017-04-17 17:34:47 +00:00
subr_turnstile.c Remove unused declaration and update ddb.4 2017-08-24 19:16:25 +00:00
subr_uio.c Simplify UIO_SYSSPACE and UIO_NOCOPY paths in uiomove 2017-07-06 15:03:54 +00:00
subr_unit.c Properly reset the fields in clean_unrhdr. 2017-10-16 16:14:50 +00:00
subr_vmem.c Start annotating global _padalign locks with __exclusive_cache_line 2017-09-06 20:28:18 +00:00
subr_witness.c Bump WITNESS_PENDLIST to accomodate sleepq chain bump. 2017-10-23 01:00:35 +00:00
sys_capability.c capsicum: perform copyout without the fildesc lock held in sys_cap_ioctls_get 2016-10-21 16:12:23 +00:00
sys_generic.c Fix NULL pointer dereference and panic with shm file pread/pwrite. 2017-03-10 10:09:44 +00:00
sys_pipe.c
sys_procdesc.c
sys_process.c Zero whole struct ptrace_lwpinfo to not leak kernel stack data. 2017-11-08 23:32:56 +00:00
sys_socket.c Don't grab SOCK_LOCK for soref() when queuing an AIO request. 2017-08-25 23:10:27 +00:00
syscalls.c Regen. 2017-06-17 00:58:19 +00:00
syscalls.master Add abstime kqueue(2) timers and expand struct kevent members. 2017-06-17 00:57:26 +00:00
systrace_args.c Regen. 2017-06-17 00:58:19 +00:00
sysv_ipc.c
sysv_msg.c Remove register keyword from sys/ and ANSIfy prototypes 2017-05-17 00:34:34 +00:00
sysv_sem.c sysvsem: check if semu_list has anything on it before grabbing the lock 2017-10-19 00:31:00 +00:00
sysv_shm.c Audit arguments to System V IPC system calls implementing sempahores, 2017-03-30 22:26:15 +00:00
tty_compat.c Renumber license clauses in sys/kern to avoid skipping #3 2016-09-15 13:16:20 +00:00
tty_info.c Renumber license clauses in sys/kern to avoid skipping #3 2016-09-15 13:16:20 +00:00
tty_inq.c Check tty_gone() after allocating IO buffers. The tty lock has to be 2017-01-13 16:37:38 +00:00
tty_outq.c Check tty_gone() after allocating IO buffers. The tty lock has to be 2017-01-13 16:37:38 +00:00
tty_pts.c Commit the 64-bit inode project. 2017-05-23 09:29:05 +00:00
tty_tty.c
tty_ttydisc.c
tty.c Commit the 64-bit inode project. 2017-05-23 09:29:05 +00:00
uipc_accf.c Listening sockets improvements. 2017-06-08 21:30:34 +00:00
uipc_debug.c ddb show socket debugging 2017-06-15 04:49:12 +00:00
uipc_domain.c Renumber license clauses in sys/kern to avoid skipping #3 2016-09-15 13:16:20 +00:00
uipc_mbuf2.c Remove writability requirement for single-mbuf, contiguous-range 2017-01-12 06:38:03 +00:00
uipc_mbuf.c mbuf(9): unbreak m_fragment() 2017-10-16 21:46:11 +00:00
uipc_mbufhash.c
uipc_mqueue.c Correct sysent flags for dynamically loaded syscalls. 2017-07-14 09:34:44 +00:00
uipc_sem.c Audit arguments to POSIX message queues, semaphores, and shared memory. 2017-03-31 13:43:00 +00:00
uipc_shm.c Replace manyinstances of VM_WAIT with blocking page allocation flags 2017-11-08 02:39:37 +00:00
uipc_sockbuf.c Third take on the r319685 and r320480. Actually allow for call soisconnected() 2017-08-24 20:49:19 +00:00
uipc_socket.c Fix locking in soisconnected(). 2017-09-14 18:05:54 +00:00
uipc_syscalls.c Listening sockets improvements. 2017-06-08 21:30:34 +00:00
uipc_usrreq.c Hide struct socket and struct unpcb from the userland. 2017-10-02 23:29:56 +00:00
vfs_acl.c Add system-call argument auditing for ACL-related system calls. 2017-03-30 22:00:58 +00:00
vfs_aio.c Fix aio_suspend in 32-bit emulation 2017-10-26 19:45:15 +00:00
vfs_bio.c Replace manyinstances of VM_WAIT with blocking page allocation flags 2017-11-08 02:39:37 +00:00
vfs_cache.c namecache: bump numcache after dropping all locks 2017-11-05 22:29:45 +00:00
vfs_cluster.c Move bogus_page declaration to vm_page.h and initialization to vm_page.c. 2017-01-04 22:27:19 +00:00
vfs_default.c Only handle _PC_MAX_CANON, _PC_MAX_INPUT, and _PC_VDISABLE for TTY devices. 2017-09-21 23:05:32 +00:00
vfs_export.c vfs_export_lookup: Fix r324054 2017-10-06 09:02:36 +00:00
vfs_extattr.c
vfs_hash.c
vfs_init.c Renumber license clauses in sys/kern to avoid skipping #3 2016-09-15 13:16:20 +00:00
vfs_lookup.c When a Linux program tries to access a /path the kernel tries 2017-10-15 18:53:21 +00:00
vfs_mount.c remove process and jail directory machinations from dounmount 2017-10-13 09:42:05 +00:00
vfs_mountroot.c Make root_mount_rel(9) ignore NULL arguments, like it used to before r313351. 2017-09-05 14:32:56 +00:00
vfs_subr.c Avoid the nbp lookup in the final loop iteration in flushbuflist(). 2017-10-20 14:56:13 +00:00
vfs_syscalls.c Remove the support for mknod(S_IFMT), which created dummy vnodes with 2017-10-22 08:11:45 +00:00
vfs_vnops.c Use whole mnt_stat.f_fsid bits for st_dev. 2017-05-27 17:00:30 +00:00
vnode_if.src For UNIX sockets make vnode point not to the socket, but to the UNIX PCB, 2017-06-02 17:31:25 +00:00