Tejun Heo 7e11629d0e workqueue: use shared worklist and pool all workers per cpu ... Use gcwq->worklist instead of cwq->worklist and break the strict association between a cwq and its worker. All works queued on a cpu are queued on gcwq->worklist and processed by any available worker on the gcwq. As there no longer is strict association between a cwq and its worker, whether a work is executing can now only be determined by calling [__]find_worker_executing_work(). After this change, the only association between a cwq and its worker is that a cwq puts a worker into shared worker pool on creation and kills it on destruction. As all workqueues are still limited to max_active of one, this means that there are always at least as many workers as active works and thus there's no danger for deadlock. The break of strong association between cwqs and workers requires somewhat clumsy changes to current_is_keventd() and destroy_workqueue(). Dynamic worker pool management will remove both clumsy changes. current_is_keventd() won't be necessary at all as the only reason it exists is to avoid queueing a work from a work which will be allowed just fine. The clumsy part of destroy_workqueue() is added because a worker can only be destroyed while idle and there's no guarantee a worker is idle when its wq is going down. With dynamic pool management, workers are not associated with workqueues at all and only idle ones will be submitted to destroy_workqueue() so the code won't be necessary anymore. Signed-off-by: Tejun Heo <tj@kernel.org>		2010-06-29 10:07:13 +02:00
..
debug	module: fix kdb's illicit use of struct module_use.	2010-06-05 11:17:36 +09:30
gcov	microblaze: Enable GCOV_PROFILE_ALL	2009-09-21 14:29:21 +02:00
irq	genirq: Clear CPU mask in affinity_hint when none is provided	2010-05-12 11:23:34 +02:00
power	workqueue: reimplement workqueue freeze using max_active	2010-06-29 10:07:12 +02:00
time	Merge branch 'timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-05-19 17:11:10 -07:00
trace	workqueue: temporarily remove workqueue tracing	2010-06-29 10:07:11 +02:00
.gitignore
acct.c	Merge branch 'next' into for-linus	2010-05-18 08:57:00 +10:00
async.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
audit.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
audit.h
audit_tree.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
audit_watch.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
auditfilter.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
auditsc.c	audit: preface audit printk with audit	2010-04-05 13:19:45 -07:00
backtracetest.c
bounds.c	kbuild: move bounds.h to include/generated	2009-12-12 13:08:14 +01:00
capability.c	sched: Remove remaining USER_SCHED code	2010-04-02 20:12:00 +02:00
cgroup.c	cgroups: alloc_css_id() increments hierarchy depth	2010-06-04 15:21:45 -07:00
cgroup_freezer.c	Freezer / cgroup freezer: Update stale locking comments	2010-05-10 23:18:47 +02:00
compat.c	cpumask: fix compat getaffinity	2010-05-19 11:48:18 -07:00
configs.c
cpu.c	sched: adjust when cpu_active and cpuset configurations are updated during cpu on/offlining	2010-06-08 21:40:36 +02:00
cpuset.c	sched: adjust when cpu_active and cpuset configurations are updated during cpu on/offlining	2010-06-08 21:40:36 +02:00
cred.c	umh: creds: kill subprocess_info->cred logic	2010-05-27 09:12:45 -07:00
delayacct.c	headers: taskstats_kern.h trim	2009-09-18 09:48:52 -07:00
dma.c
early_res.c	x86: Do not free zero sized per cpu areas	2010-03-29 18:55:40 +02:00
elfcore.c	elf coredump: add extended numbering support	2010-03-06 11:26:46 -08:00
exec_domain.c	sys_personality: change sys_personality() to accept "unsigned int" instead of u_long	2010-06-04 15:21:45 -07:00
exit.c	proc: turn signal_struct->count into "int nr_threads"	2010-05-27 09:12:47 -07:00
extable.c
fork.c	sched: add hooks for workqueue	2010-06-08 21:40:37 +02:00
freezer.c
futex.c	futex: Handle futex value corruption gracefully	2010-02-03 15:13:22 +01:00
futex_compat.c	futex: Protect pid lookup in compat code with RCU	2009-12-09 14:22:14 +01:00
groups.c	security: remove dead hook task_setgroups	2010-04-12 12:19:18 +10:00
hrtimer.c	hrtimer: Avoid double seqlock	2010-05-26 16:15:37 +02:00
hung_task.c	softlockup: Fix hung_task_check_count sysctl	2009-11-27 06:21:57 +01:00
hw_breakpoint.c	hw_breakpoints: Fix percpu build failure	2010-05-04 08:39:36 +02:00
itimer.c	itimers: Fix racy writes to cpu_itimer fields	2009-11-18 16:32:12 +01:00
kallsyms.c	kdb: core for kgdb back end (2 of 2)	2010-05-20 21:04:21 -05:00
Kconfig.freezer
Kconfig.hz
Kconfig.locks	mutex: Better control mutex adaptive spinning config	2009-12-03 11:50:11 +01:00
Kconfig.preempt
kexec.c	kexec: fix OOPS in crash_kernel_shrink	2010-05-11 17:33:42 -07:00
kfifo.c	kfifo: Don't use integer as NULL pointer	2010-02-16 15:11:08 -08:00
kmod.c	call_usermodehelper: UMH_WAIT_EXEC ignores kernel_thread() failure	2010-05-27 09:12:45 -07:00
kprobes.c	kprobes: Move enable/disable_kprobe() out from debugfs code	2010-05-08 18:08:30 +02:00
ksysfs.c	sysfs: add struct file* to bin_attr callbacks	2010-05-21 09:37:31 -07:00
kthread.c	kthread: implement kthread_data()	2010-06-29 10:07:09 +02:00
latencytop.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
lockdep.c	lockdep: Add novalidate class for dev->mutex conversion	2010-05-21 09:37:30 -07:00
lockdep_internals.h	lockdep: No need to disable preemption in debug atomic ops	2010-05-04 05:38:16 +02:00
lockdep_proc.c	lockstat: Make lockstat counting per cpu	2010-04-06 00:15:37 +02:00
lockdep_states.h
Makefile	Move kernel/kgdb.c to kernel/debug/debug_core.c	2010-05-20 21:04:18 -05:00
module.c	module: fix bne2 "gave up waiting for init of module libcrc32c"	2010-06-05 11:17:37 +09:30
mutex-debug.c	headers: remove sched.h from interrupt.h	2009-10-11 11:20:58 -07:00
mutex-debug.h	locking: Implement new raw_spinlock	2009-12-14 23:55:32 +01:00
mutex.c	mutex: Fix optimistic spinning vs. BKL	2010-05-19 08:18:44 +02:00
mutex.h
notifier.c	sched: Use lockdep-based checking on rcu_dereference()	2010-02-25 10:34:26 +01:00
ns_cgroup.c	cgroups: let ss->can_attach and ss->attach do whole threadgroups at a time	2009-09-24 07:20:58 -07:00
nsproxy.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
padata.c	kernel/: convert cpu notifier to return encapsulate errno value	2010-05-27 09:12:48 -07:00
panic.c	panic: call console_verbose() in panic	2010-05-27 09:12:53 -07:00
params.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2010-03-12 16:04:50 -08:00
perf_event.c	perf: Fix signed comparison in perf_adjust_period()	2010-06-08 18:43:00 +02:00
pid.c	pids: increase pid_max based on num_possible_cpus	2010-05-27 09:12:51 -07:00
pid_namespace.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
pm_qos_params.c	PM: PM QOS update fix	2010-05-17 00:21:03 +02:00
posix-cpu-timers.c	posix-cpu-timers: avoid "task->signal != NULL" checks	2010-05-27 09:12:46 -07:00
posix-timers.c	posix_timer: Fix error path in timer_create	2010-05-27 22:38:15 +02:00
printk.c	printk,kdb: capture printk() when in kdb shell	2010-05-20 21:04:27 -05:00
profile.c	numa: in-kernel profiling: use cpu_to_mem() for per cpu allocations	2010-05-27 09:12:57 -07:00
ptrace.c	ptrace: PTRACE_GETFDPIC: fix the unsafe usage of child->mm	2010-05-27 09:12:44 -07:00
range.c	x86: Change range end to start+size	2010-02-10 17:47:17 -08:00
rcupdate.c	rcu: slim down rcutiny by removing rcu_scheduler_active and friends	2010-05-10 11:08:34 -07:00
rcutiny.c	rcu: remove all rcu head initializations, except on_stack initializations	2010-05-11 16:10:47 -07:00
rcutiny_plugin.h	rcu: slim down rcutiny by removing rcu_scheduler_active and friends	2010-05-10 11:08:34 -07:00
rcutorture.c	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-05-18 08:27:54 -07:00
rcutree.c	rcu: remove all rcu head initializations, except on_stack initializations	2010-05-11 16:10:47 -07:00
rcutree.h	rcu: reduce the number of spurious RCU_SOFTIRQ invocations	2010-05-10 11:08:35 -07:00
rcutree_plugin.h	rcu: remove all rcu head initializations, except on_stack initializations	2010-05-11 16:10:47 -07:00
rcutree_trace.c	rcu: reduce the number of spurious RCU_SOFTIRQ invocations	2010-05-10 11:08:35 -07:00
relay.c	kernel/: convert cpu notifier to return encapsulate errno value	2010-05-27 09:12:48 -07:00
res_counter.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
resource.c	resource: shared I/O region support	2010-05-11 12:01:10 -07:00
rtmutex-debug.c	sched: Convert pi_lock to raw_spinlock	2009-12-14 23:55:33 +01:00
rtmutex-debug.h
rtmutex-tester.c
rtmutex.c	rtmutes: Convert rtmutex.lock to raw_spinlock	2009-12-14 23:55:33 +01:00
rtmutex.h
rtmutex_common.h
rwsem.c
sched.c	sched: add hooks for workqueue	2010-06-08 21:40:37 +02:00
sched_clock.c	blkio: fix for modular blk-cgroup build	2010-04-15 08:54:59 +02:00
sched_cpupri.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
sched_cpupri.h	sched: Convert cpupri lock to raw_spinlock	2009-12-14 23:55:33 +01:00
sched_debug.c	proc_sched_show_task(): use get_nr_threads()	2010-05-27 09:12:47 -07:00
sched_fair.c	sched: Fix wake_affine() vs RT tasks	2010-06-01 09:27:16 +02:00
sched_features.h	sched: Remove ASYM_GRAN feature	2010-03-11 18:32:53 +01:00
sched_idletask.c	sched: Cure load average vs NO_HZ woes	2010-04-23 11:02:02 +02:00
sched_rt.c	sched: Add enqueue/dequeue flags	2010-04-02 20:12:05 +02:00
sched_stats.h
seccomp.c
semaphore.c
signal.c	exit: change zap_other_threads() to count sub-threads	2010-05-27 09:12:46 -07:00
slow-work-debugfs.c	SLOW_WORK: Move slow_work's proc file to debugfs	2009-12-01 08:20:31 -08:00
slow-work.c	slow-work: use get_ref wrapper instead of directly calling get_ref	2010-03-29 09:13:30 -07:00
slow-work.h	SLOW_WORK: CONFIG_SLOW_WORK_PROC should be CONFIG_SLOW_WORK_DEBUG	2010-03-29 09:14:47 -07:00
smp.c	kernel/: convert cpu notifier to return encapsulate errno value	2010-05-27 09:12:48 -07:00
softirq.c	kernel/: fix BUG_ON checks for cpu notifier callbacks direct call	2010-06-04 15:21:45 -07:00
softlockup.c	softlockup: Stop spurious softlockup messages due to overflow	2010-03-21 19:30:13 +01:00
spinlock.c	locking: Cleanup the name space completely	2009-12-14 23:55:33 +01:00
srcu.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
stacktrace.c
stop_machine.c	sched: Make sure timers have migrated before killing the migration_thread	2010-05-31 08:37:44 +02:00
sys.c	kmod: add init function to usermodehelper	2010-05-27 09:12:44 -07:00
sys_ni.c	Add generic sys_ipc wrapper	2010-03-12 15:52:32 -08:00
sysctl.c	pipe: change /proc/sys/fs/pipe-max-pages to byte sized interface	2010-06-03 14:54:39 +02:00
sysctl_binary.c	sysctl: don't use own implementation of hex_to_bin()	2010-05-25 08:07:05 -07:00
sysctl_check.c	ipv4 05/05: add sysctl to accept packets with local source addresses	2009-12-03 12:14:38 -08:00
taskstats.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
test_kprobes.c
time.c	timekeeping: Fix timezone update	2010-05-24 11:50:38 +02:00
timeconst.pl
timer.c	kernel/: fix BUG_ON checks for cpu notifier callbacks direct call	2010-06-04 15:21:45 -07:00
tracepoint.c	tracing: Let tracepoints have data passed to tracepoint callbacks	2010-05-14 09:50:34 -04:00
tsacct.c	mm: clean up mm_counter	2010-03-06 11:26:23 -08:00
uid16.c	headers: utsname.h redux	2009-09-23 18:13:10 -07:00
up.c
user-return-notifier.c	core: Clean up user return notifers use of per_cpu	2009-12-02 10:22:59 +01:00
user.c	sched: Remove a stale comment	2010-05-10 08:48:39 +02:00
user_namespace.c	kref: remove kref_set	2010-05-21 09:37:29 -07:00
utsname.c
utsname_sysctl.c	sysctl kernel: Remove binary sysctl logic	2009-11-12 02:04:55 -08:00
wait.c
workqueue.c	workqueue: use shared worklist and pool all workers per cpu	2010-06-29 10:07:13 +02:00
workqueue_sched.h	sched: add hooks for workqueue	2010-06-08 21:40:37 +02:00