Tejun Heo
af0ba6789c
cgroup: implement cgroup_subsys->depends_on
...
Currently, the blkio subsystem attributes all of writeback IOs to the
root. One of the issues is that there's no way to tell who originated
a writeback IO from block layer. Those IOs are usually issued
asynchronously from a task which didn't have anything to do with
actually generating the dirty pages. The memory subsystem, when
enabled, already keeps track of the ownership of each dirty page and
it's desirable for blkio to piggyback instead of adding its own
per-page tag.
blkio piggybacking on memory is an implementation detail which
preferably should be handled automatically without requiring explicit
userland action. To achieve that, this patch implements
cgroup_subsys->depends_on which contains the mask of subsystems which
should be enabled together when the subsystem is enabled.
The previous patches already implemented the support for enabled but
invisible subsystems and cgroup_subsys->depends_on can be easily
implemented by updating cgroup_refresh_child_subsys_mask() so that it
calculates cgroup->child_subsys_mask considering
cgroup_subsys->depends_on of the explicitly enabled subsystems.
Documentation/cgroups/unified-hierarchy.txt is updated to explain that
subsystems may not become immediately available after being unused
from userland and that dependency could be a factor in it. As
subsystems may already keep residual references, this doesn't
significantly change how subsystem rebinding can be used.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizefan@huawei.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
2014-07-08 18:02:57 -04:00
..
debug
kernel/printk: use symbolic defines for console loglevels
2014-06-04 16:54:17 -07:00
events
Merge branch 'perf/core' into perf/urgent, to pick up the latest fixes
2014-06-14 14:10:08 +02:00
gcov
gcov: add support for GCC 4.9
2014-06-10 15:34:46 -07:00
irq
genirq: Improve documentation to match current implementation
2014-05-27 10:16:44 +02:00
locking
Merge branch 'locking-urgent-for-linus.patch' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2014-06-21 07:06:02 -10:00
power
x86, kaslr: boot-time selectable with hibernation
2014-06-16 23:30:44 +02:00
printk
kernel/printk: use symbolic defines for console loglevels
2014-06-04 16:54:17 -07:00
rcu
Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next
2014-06-03 12:57:53 -07:00
sched
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2014-06-12 19:42:15 -07:00
time
Merge branch 'akpm' (patchbomb from Andrew) into next
2014-06-04 16:55:13 -07:00
trace
One bug fix that goes back to 3.10. Accessing a non existent buffer
2014-06-12 21:07:25 -07:00
.gitignore
acct.c
ipc, kernel: clear whitespace
2014-06-06 16:08:14 -07:00
async.c
audit.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2014-06-12 14:27:40 -07:00
audit.h
audit_tree.c
audit_watch.c
auditfilter.c
Merge git://git.infradead.org/users/eparis/audit
2014-04-12 12:38:53 -07:00
auditsc.c
auditsc: audit_krule mask accesses need bounds checking
2014-06-10 08:44:40 -07:00
backtracetest.c
kernel/backtracetest.c: replace no level printk by pr_info()
2014-06-04 16:54:14 -07:00
bounds.c
capability.c
fs,userns: Change inode_capable to capable_wrt_inode_uidgid
2014-06-10 13:57:22 -07:00
cgroup.c
cgroup: implement cgroup_subsys->depends_on
2014-07-08 18:02:57 -04:00
cgroup_freezer.c
cgroup: remove css_parent()
2014-05-16 13:22:48 -04:00
compat.c
kernel/compat.c: use sizeof() instead of sizeof
2014-06-04 16:54:19 -07:00
configs.c
context_tracking.c
x86/kprobes: Fix build errors and blacklist context_track_user
2014-06-14 09:07:44 +02:00
cpu.c
More ACPI and power management updates for 3.16-rc1
2014-06-12 13:14:19 -07:00
cpu_pm.c
cpuset.c
Merge branch 'for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
2014-06-09 15:03:33 -07:00
crash_dump.c
cred.c
delayacct.c
dma.c
elfcore.c
exec_domain.c
kernel/exec_domain.c: code clean-up
2014-06-04 16:54:15 -07:00
exit.c
signals: mv {dis,}allow_signal() from sched.h/exit.c to signal.[ch]
2014-06-06 16:08:11 -07:00
extable.c
fork.c
ptrace: fix fork event messages across pid namespaces
2014-06-06 16:08:11 -07:00
freezer.c
futex.c
Merge branch 'next' (accumulated 3.16 merge window patches) into master
2014-06-08 11:31:16 -07:00
futex_compat.c
groups.c
hrtimer.c
Merge branch 'perf/urgent' into perf/core, to resolve conflict and to prepare for new patches
2014-06-06 07:55:06 +02:00
hung_task.c
kernel/hung_task.c: convert simple_strtoul to kstrtouint
2014-06-04 16:54:15 -07:00
irq_work.c
itimer.c
jump_label.c
kallsyms.c
kernel: use macros from compiler.h instead of __attribute__((...))
2014-04-07 16:36:11 -07:00
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
locking/rwlocks: Introduce 'qrwlocks' - fair, queued rwlocks
2014-06-06 07:58:28 +02:00
Kconfig.preempt
kexec.c
kernel/kexec.c: convert printk to pr_foo()
2014-06-06 16:08:12 -07:00
kmod.c
signals: change wait_for_helper() to use kernel_sigaction()
2014-06-06 16:08:12 -07:00
kprobes.c
kprobes: Show blacklist entries via debugfs
2014-04-24 10:26:41 +02:00
ksysfs.c
kobject: Make support for uevent_helper optional.
2014-04-25 12:00:49 -07:00
kthread.c
kthread: fix return value of kthread_create() upon SIGKILL.
2014-06-04 16:53:51 -07:00
latencytop.c
kernel/latencytop.c: convert seq_printf to seq_puts
2014-06-04 16:54:15 -07:00
Makefile
module-internal.h
module.c
Most of this is cleaning up various driver sysfs permissions so we can
2014-06-11 16:09:14 -07:00
module_signing.c
notifier.c
kprobes, notifier: Use NOKPROBE_SYMBOL macro in notifier
2014-04-24 10:26:39 +02:00
nsproxy.c
padata.c
panic.c
kernel/panic.c: add "crash_kexec_post_notifiers" option for kdump after panic_notifers
2014-06-06 16:08:12 -07:00
params.c
param: hand arguments after -- straight to init
2014-04-28 11:48:34 +09:30
pid.c
pid_namespace.c
posix-cpu-timers.c
posix-timers.c
profile.c
kernel/profile.c: use static const char instead of static char
2014-06-06 16:08:13 -07:00
ptrace.c
range.c
reboot.c
kernel/reboot.c: convert simple_strtoul to kstrtoint
2014-06-04 16:54:15 -07:00
relay.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2014-04-12 14:49:50 -07:00
res_counter.c
kernel/res_counter.c: replace simple_strtoull by kstrtoull
2014-06-04 16:54:15 -07:00
resource.c
resources: Clarify sanity check message
2014-05-23 10:47:21 -06:00
seccomp.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2014-06-12 14:27:40 -07:00
signal.c
signals: introduce kernel_sigaction()
2014-06-06 16:08:12 -07:00
smp.c
smp: print more useful debug info upon receiving IPI on an offline CPU
2014-06-06 16:08:12 -07:00
smpboot.c
smpboot.h
softirq.c
Merge branch 'rcu/next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
2014-05-22 11:36:10 +02:00
stacktrace.c
stop_machine.c
kernel/stop_machine.c: kernel-doc warning fix
2014-06-04 16:54:15 -07:00
sys.c
sched: Consolidate open coded implementations of nice level frobbing into nice_to_rlimit() and rlimit_to_nice()
2014-05-22 11:16:36 +02:00
sys_ni.c
sys_sgetmask/sys_ssetmask: add CONFIG_SGETMASK_SYSCALL
2014-06-04 16:54:14 -07:00
sysctl.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next
2014-06-19 07:50:07 -10:00
sysctl_binary.c
system_certificates.S
system_keyring.c
task_work.c
taskstats.c
test_kprobes.c
time.c
timeconst.bc
timer.c
timer: Prevent overflow in apply_slack
2014-04-30 13:46:17 +02:00
torture.c
torture: Remove __init from torture_init_begin/end
2014-05-14 09:46:30 -07:00
tracepoint.c
kernel/tracepoint.c: kernel-doc fixes
2014-06-04 16:54:15 -07:00
tsacct.c
uid16.c
up.c
user-return-notifier.c
user.c
kernel/user.c: drop unused field 'files' from user_struct
2014-06-04 16:54:16 -07:00
user_namespace.c
kernel/user_namespace.c: kernel-doc/checkpatch fixes
2014-06-06 16:08:13 -07:00
utsname.c
utsname_sysctl.c
sysctl: convert use of typedef ctl_table to struct ctl_table
2014-06-06 16:08:16 -07:00
watchdog.c
kernel/watchdog.c:touch_softlockup_watchdog(): use raw_cpu_write()
2014-04-18 16:40:08 -07:00
workqueue.c
Merge branch 'for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
2014-06-09 14:56:49 -07:00
workqueue_internal.h
workqueue: rename manager_mutex to attach_mutex
2014-05-20 10:59:32 -04:00