Tejun Heo 02bb586372 cpuset: schedule hotplug propagation from cpuset_attach() if the cpuset is empty ... cpuset is scheduled to be decoupled from cgroup_lock which will make hotplug handling race with task migration. cpus or mems will be allowed to go offline between ->can_attach() and ->attach(). If hotplug takes down all cpus or mems of a cpuset while attach is in progress, ->attach() may end up putting tasks into an empty cpuset. This patchset makes ->attach() schedule hotplug propagation if the cpuset is empty after attaching is complete. This will move the tasks to the nearest ancestor which can execute and the end result would be as if hotplug handling happened after the tasks finished attaching. cpuset_write_resmask() now also flushes cpuset_propagate_hotplug_wq to wait for propagations scheduled directly by cpuset_attach(). This currently doesn't make any functional difference as everything is protected by cgroup_mutex but enables decoupling the locking. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Li Zefan <lizefan@huawei.com>		2013-01-07 08:51:08 -08:00
..
debug
events	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2012-12-17 15:44:47 -08:00
gcov
irq	irq: tsk->comm is an array	2012-12-18 15:02:11 -08:00
power	Merge branch 'for-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2012-12-12 08:18:24 -08:00
sched	sched: numa: ksm: fix oops in task_numa_placment()	2012-12-20 07:06:56 -08:00
time	Merge tag 'kvm-3.8-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm	2012-12-13 15:31:08 -08:00
trace	Merge branch 'tip/perf/core-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace	2012-12-18 12:28:39 -08:00
.gitignore
acct.c
async.c
audit_tree.c	fsnotify: pass group to fsnotify_destroy_mark()	2012-12-11 13:44:36 -05:00
audit_watch.c	Merge branch 'for-next' of git://git.infradead.org/users/eparis/notify	2012-12-20 20:11:52 -08:00
audit.c
audit.h
auditfilter.c
auditsc.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal	2012-12-12 12:22:13 -08:00
backtracetest.c
bounds.c
capability.c
cgroup_freezer.c	cgroup: rename ->create/post_create/pre_destroy/destroy() to ->css_alloc/online/offline/free()	2012-11-19 08:13:38 -08:00
cgroup.c	cgroup: implement cgroup_rightmost_descendant()	2013-01-07 08:50:28 -08:00
compat.c	compat: generic compat_sys_sched_rr_get_interval() implementation	2012-12-17 17:15:18 -08:00
configs.c
context_tracking.c	context_tracking: New context tracking susbsystem	2012-11-30 11:40:07 -08:00
cpu_pm.c
cpu.c	Merge branch 'x86-bsp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-12-11 19:56:33 -08:00
cpuset.c	cpuset: schedule hotplug propagation from cpuset_attach() if the cpuset is empty	2013-01-07 08:51:08 -08:00
crash_dump.c
cred.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2012-12-18 10:55:28 -08:00
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2012-12-17 15:44:47 -08:00
extable.c
fork.c	pidns: Outlaw thread creation after unshare(CLONE_NEWPID)	2012-12-24 22:53:14 -08:00
freezer.c	freezer: change ptrace_stop/do_signal_stop to use freezable_schedule()	2012-10-26 14:27:49 -07:00
futex_compat.c
futex.c	futex: avoid wake_futex() for a PI futex_q	2012-11-26 17:41:24 -08:00
groups.c
hrtimer.c
hung_task.c
irq_work.c
itimer.c
jump_label.c
kallsyms.c
kcmp.c	kcmp: include linux/ptrace.h	2012-12-20 17:40:19 -08:00
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kexec.c
kfifo.c
kmod.c	Bury the conditionals from kernel_thread/kernel_execve series	2012-12-19 18:07:38 -05:00
kprobes.c
ksysfs.c	Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-12-11 18:10:49 -08:00
kthread.c	kthread: use N_MEMORY instead N_HIGH_MEMORY	2012-12-12 17:38:33 -08:00
latencytop.c
lglock.c
lockdep_internals.h
lockdep_proc.c	lockdep: Use KSYM_NAME_LEN'ed buffer for __get_key_name()	2012-10-24 12:39:09 +02:00
lockdep_states.h
lockdep.c
Makefile	Nothing all that exciting; a new module-from-fd syscall for those who want	2012-12-19 07:55:08 -08:00
modsign_certificate.S	MODSIGN: Avoid using .incbin in C source	2012-12-14 13:06:44 +10:30
modsign_pubkey.c	keys: use keyring_alloc() to create module signing keyring	2012-12-20 17:40:21 -08:00
module_signing.c	MODSIGN: Don't use enum-type bitfields in module signature info block	2012-12-05 11:27:24 +10:30
module-internal.h	MODSIGN: Move the magic string to the end of a module and eliminate the search	2012-10-19 17:30:40 -07:00
module.c	Nothing all that exciting; a new module-from-fd syscall for those who want	2012-12-19 07:55:08 -08:00
mutex-debug.c
mutex-debug.h
mutex.c
mutex.h
notifier.c
nsproxy.c	userns: Implement unshare of the user namespace	2012-11-20 04:18:14 -08:00
padata.c	padata: use __this_cpu_read per-cpu helper	2012-12-06 17:16:23 +08:00
panic.c
params.c
pid_namespace.c	pidns: Stop pid allocation when init dies	2012-12-25 16:10:05 -08:00
pid.c	pidns: Stop pid allocation when init dies	2012-12-25 16:10:05 -08:00
posix-cpu-timers.c	A few /dev/random improvements for the v3.8 merge window.	2012-12-19 20:23:37 -08:00
posix-timers.c
printk.c	printk: boot_delay should only affect output	2012-12-17 17:15:13 -08:00
profile.c	propagate name change to comments in kernel source	2012-12-06 10:39:54 +01:00
ptrace.c	Merge branch 'akpm' (Andrew's patch-bomb)	2012-12-17 20:58:12 -08:00
range.c
rcu.h	rcu: Add a module parameter to force use of expedited RCU primitives	2012-10-23 14:54:08 -07:00
rcupdate.c	rcu: Add a module parameter to force use of expedited RCU primitives	2012-10-23 14:54:08 -07:00
rcutiny_plugin.h	rcu: Add a module parameter to force use of expedited RCU primitives	2012-10-23 14:54:08 -07:00
rcutiny.c	rcu: Fix TINY_RCU rcu_is_cpu_rrupt_from_idle check	2012-11-13 14:08:34 -08:00
rcutorture.c	Merge branches 'urgent.2012.10.27a', 'doc.2012.11.16a', 'fixes.2012.11.13a', 'srcu.2012.10.27a', 'stall.2012.11.13a', 'tracing.2012.11.08a' and 'idle.2012.10.24a' into HEAD	2012-11-16 09:59:58 -08:00
rcutree_plugin.h	rcu: Separate accounting of callbacks from callback-free CPUs	2012-11-16 10:05:57 -08:00
rcutree_trace.c	rcu: Separate accounting of callbacks from callback-free CPUs	2012-11-16 10:05:57 -08:00
rcutree.c	context_tracking: New context tracking susbsystem	2012-11-30 11:40:07 -08:00
rcutree.h	rcu: Separate accounting of callbacks from callback-free CPUs	2012-11-16 10:05:57 -08:00
relay.c
res_counter.c	res_counter: return amount of charges after res_counter_uncharge()	2012-12-18 15:02:12 -08:00
resource.c
rtmutex_common.h
rtmutex-debug.c
rtmutex-debug.h
rtmutex-tester.c
rtmutex.c
rtmutex.h
rwsem.c
seccomp.c
semaphore.c
signal.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal	2012-12-20 18:05:28 -08:00
smp.c
smpboot.c
smpboot.h
softirq.c	cputime: Specialize irq vtime hooks	2012-10-29 21:31:32 +01:00
spinlock.c
srcu.c	Merge branches 'urgent.2012.10.27a', 'doc.2012.11.16a', 'fixes.2012.11.13a', 'srcu.2012.10.27a', 'stall.2012.11.13a', 'tracing.2012.11.08a' and 'idle.2012.10.24a' into HEAD	2012-11-16 09:59:58 -08:00
stacktrace.c
stop_machine.c
sys_ni.c	module: add syscall to load module from fd	2012-12-14 13:05:22 +10:30
sys.c	cputime: Rename thread_group_times to thread_group_cputime_adjusted	2012-11-28 17:07:57 +01:00
sysctl_binary.c	pidns: Use task_active_pid_ns where appropriate	2012-11-19 05:59:09 -08:00
sysctl.c	Automatic NUMA Balancing V11	2012-12-16 15:18:08 -08:00
task_work.c
taskstats.c
test_kprobes.c
time.c
timeconst.pl
timer.c
tracepoint.c
tsacct.c
uid16.c
up.c
user_namespace.c	userns: Fix typo in description of the limitation of userns_install	2012-12-14 18:36:36 -08:00
user-return-notifier.c
user.c	proc: Usable inode numbers for the namespace file descriptors.	2012-11-20 04:19:49 -08:00
utsname_sysctl.c
utsname.c	userns: Require CAP_SYS_ADMIN for most uses of setns.	2012-12-14 16:12:03 -08:00
wait.c	propagate name change to comments in kernel source	2012-12-06 10:39:54 +01:00
watchdog.c	watchdog: Fix disable/enable regression	2012-12-19 12:10:33 -08:00
workqueue_sched.h
workqueue.c	Merge branch 'for-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq	2012-12-12 08:15:13 -08:00