Glauber Costa 54c707e98d sched/accounting: Re-use scheduler statistics for the root cgroup ...

Right now, after we collect tick statistics for user and system and store them
in a well known location, we keep the same statistics again for cpuacct.
Since cpuacct is hierarchical, the numbers for the root cgroup should be
absolutely equal to the system-wide numbers.

So it would be better to just use it: this patch changes cpuacct accounting
in a way that the cpustat statistics are kept in a struct kernel_cpustat percpu
array. In the root cgroup case, we just point it to the main array. The rest of
the hierarchy walk can be totally disabled later with a static branch - but I am
not doing it here.

Signed-off-by: Glauber Costa <glommer@parallels.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Tuner <pjt@google.com>
Link: http://lkml.kernel.org/r/1322498719-2255-4-git-send-email-glommer@parallels.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2011-12-06 20:51:21 +01:00

..

debug

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

events

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

gcov

gcov: disable CONSTRUCTORS for UML

2011-07-26 16:49:45 -07:00

irq

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

power

PM / QoS: Set cpu_dma_pm_qos->name

2011-11-07 23:02:24 +01:00

sched

sched/accounting: Re-use scheduler statistics for the root cgroup

2011-12-06 20:51:21 +01:00

time

sched, nohz: Track nr_busy_cpus in the sched_group_power

2011-12-06 09:06:32 +01:00

trace

kernel: Fix files explicitly needing EXPORT_SYMBOL infrastructure

2011-10-31 19:30:05 -04:00

.gitignore

…

acct.c

pass a struct path to vfs_statfs

2010-08-09 16:48:42 -04:00

async.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

audit_tree.c

audit_tree,rcu: Convert call_rcu(__put_tree) to kfree_rcu()

2011-07-20 14:10:11 -07:00

audit_watch.c

kill path_lookup()

2011-03-14 09:15:23 -04:00

audit.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

audit.h

audit: make functions static

2010-10-30 01:42:19 -04:00

auditfilter.c

netlink: kill loginuid/sessionid/sid members from struct netlink_skb_parms

2011-03-03 10:55:40 -08:00

auditsc.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

backtracetest.c

…

bounds.c

memcg: remove direct page_cgroup-to-page pointer

2011-03-23 19:46:28 -07:00

capability.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

cgroup_freezer.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

cgroup.c

memcg: replace ss->id_lock with a rwlock

2011-11-02 16:07:03 -07:00

compat.c

kernel: Fix files explicitly needing EXPORT_SYMBOL infrastructure

2011-10-31 19:30:05 -04:00

configs.c

kernel/configs.c: include MODULE_*() when CONFIG_IKCONFIG_PROC=n

2011-07-25 20:57:15 -07:00

cpu_pm.c

cpu_pm: call notifiers during suspend

2011-09-23 12:05:29 +05:30

cpu.c

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

cpuset.c

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

crash_dump.c

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

cred.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

delayacct.c

KVM: Steal time implementation

2011-07-14 12:59:14 +03:00

dma.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

elfcore.c

elf coredump: add extended numbering support

2010-03-06 11:26:46 -08:00

exec_domain.c

sys_personality: remove the bogus checks in sys_personality()->__set_personality() path

2010-08-09 20:45:05 -07:00

exit.c

oom: remove oom_disable_count

2011-10-31 17:30:45 -07:00

extable.c

extable, core_kernel_data(): Make sure all archs define _sdata

2011-05-20 08:56:56 +02:00

fork.c

Merge branch 'writeback-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux

2011-11-06 19:02:23 -08:00

freezer.c

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

futex_compat.c

userns: user namespaces: convert several capable() calls

2011-03-23 19:47:08 -07:00

futex.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

groups.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

hrtimer.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

hung_task.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

irq_work.c

kernel: fix two implicit header assumptions in irq_work.c

2011-10-31 09:20:12 -04:00

itimer.c

itimers: Fix racy writes to cpu_itimer fields

2009-11-18 16:32:12 +01:00

jump_label.c

jump-label: initialize jump-label subsystem much earlier

2011-10-25 11:55:15 -07:00

kallsyms.c

Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2011-03-25 17:52:22 -07:00

Kconfig.freezer

…

Kconfig.hz

…

Kconfig.locks

arch:Kconfig.locks Remove unused config option.

2011-04-10 17:01:05 +02:00

Kconfig.preempt

sched: Isolate preempt counting in its own config option

2011-06-10 15:15:40 +02:00

kexec.c

[S390] kdump: Add infrastructure for unmapping crashkernel memory

2011-10-30 15:16:42 +01:00

kfifo.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

kmod.c

kmod: prevent kmod_loop_msg overflow in __request_module()

2011-10-26 13:10:39 +10:30

kprobes.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

ksysfs.c

kernel: ksysfs.c is implicitly using stat.h

2011-10-31 09:20:13 -04:00

kthread.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

latencytop.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

lockdep_internals.h

lockdep: No need to disable preemption in debug atomic ops

2010-05-04 05:38:16 +02:00

lockdep_proc.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

lockdep_states.h

…

lockdep.c

Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2011-10-26 16:26:53 +02:00

Makefile

sched: Move all scheduler bits into kernel/sched/

2011-11-17 12:20:22 +01:00

module.c

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

mutex-debug.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

mutex-debug.h

mutex: Use p->on_cpu for the adaptive spin

2011-04-14 08:52:33 +02:00

mutex.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

mutex.h

mutex: Use p->on_cpu for the adaptive spin

2011-04-14 08:52:33 +02:00

notifier.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

nsproxy.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

padata.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

panic.c

module,bug: Add TAINT_OOT_MODULE flag for modules not built in-tree

2011-11-07 07:54:42 +10:30

params.c

kernel: params.c needs module.h not moduleparam.h

2011-10-31 09:20:13 -04:00

pid_namespace.c

pidns: call pid_ns_prepare_proc() from create_pid_namespace()

2011-03-23 19:46:58 -07:00

pid.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

posix-cpu-timers.c

Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2011-10-26 16:17:32 +02:00

posix-timers.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

printk.c

printk: remove bounds checking for log_prefix

2011-10-31 17:30:53 -07:00

profile.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

ptrace.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

range.c

range: fix bogus misuse of module.h to get printk()

2011-10-31 09:20:11 -04:00

rcu.h

rcu: Add grace-period, quiescent-state, and call_rcu trace events

2011-09-28 21:38:21 -07:00

rcupdate.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

rcutiny_plugin.h

kernel: fix up module header handling in rcutiny files

2011-10-31 09:20:13 -04:00

rcutiny.c

kernel: fix up module header handling in rcutiny files

2011-10-31 09:20:13 -04:00

rcutorture.c

rcu: Make rcu_torture_boost() exit loops at end of test

2011-09-28 21:38:46 -07:00

rcutree_plugin.h

rcu: Remove rcu_needs_cpu_flush() to avoid false quiescent states

2011-09-28 21:38:48 -07:00

rcutree_trace.c

rcu: Simplify quiescent-state accounting

2011-09-28 21:38:22 -07:00

rcutree.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

rcutree.h

rcu: Remove rcu_needs_cpu_flush() to avoid false quiescent states

2011-09-28 21:38:48 -07:00

relay.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

res_counter.c

memcg: res_counter_read_u64(): fix potential races on 32-bit machines

2011-03-23 19:46:22 -07:00

resource.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

rtmutex_common.h

rtmutex: Simplify PI algorithm and make highest prio task get lock

2011-01-27 21:13:51 -05:00

rtmutex-debug.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

rtmutex-debug.h

…

rtmutex-tester.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

rtmutex.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

rtmutex.h

…

rwsem.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

seccomp.c

…

semaphore.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

signal.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

smp.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

softirq.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

spinlock.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

srcu.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

stacktrace.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

stop_machine.c

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

sys_ni.c

Cross Memory Attach

2011-10-31 17:30:44 -07:00

sys.c

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

sysctl_binary.c

ipv4: NET_IPV4_ROUTE_GC_INTERVAL removal

2011-10-03 14:13:01 -04:00

sysctl_check.c

xfs: remove subdirectories

2011-08-12 16:21:35 -05:00

sysctl.c

Merge branch 'akpm' (Andrew's incoming)

2011-10-31 17:46:07 -07:00

taskstats.c

Make TASKSTATS require root access

2011-09-19 17:04:37 -07:00

test_kprobes.c

kprobes: Fix selftest to clear flags field for reusing probes

2010-10-14 08:55:27 +02:00

time.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

timeconst.pl

…

timer.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

tracepoint.c

Tracepoint: Dissociate from module mutex

2011-08-10 20:38:14 -04:00

tsacct.c

Make taskstats round statistics down to nearest 1k bytes/events

2011-09-19 17:10:57 -07:00

uid16.c

userns: user namespaces: convert several capable() calls

2011-03-23 19:47:08 -07:00

up.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

user_namespace.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

user-return-notifier.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

user.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

utsname_sysctl.c

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

utsname.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

wait.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

watchdog.c

watchdog: move watchdog_*_all_cpus under CONFIG_SYSCTL

2011-10-31 17:30:53 -07:00

workqueue_sched.h

workqueue: implement concurrency managed dynamic worker pool

2010-06-29 10:07:14 +02:00

workqueue.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00