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858d72ead4
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Serge E. Hallyn 858d72ead4 cgroups: implement namespace tracking subsystem 
When a task enters a new namespace via a clone() or unshare(), a new cgroup
is created and the task moves into it.

This version names cgroups which are automatically created using
cgroup_clone() as "node_<pid>" where pid is the pid of the unsharing or
cloned process.  (Thanks Pavel for the idea) This is safe because if the
process unshares again, it will create

	/cgroups/(...)/node_<pid>/node_<pid>

The only possibilities (AFAICT) for a -EEXIST on unshare are

	1. pid wraparound
	2. a process fails an unshare, then tries again.

Case 1 is unlikely enough that I ignore it (at least for now).  In case 2, the
node_<pid> will be empty and can be rmdir'ed to make the subsequent unshare()
succeed.

Changelog:
	Name cloned cgroups as "node_<pid>".

[clg@fr.ibm.com: fix order of cgroup subsystems in init/Kconfig]
Signed-off-by: Serge E. Hallyn <serue@us.ibm.com>
Cc: Paul Menage <menage@google.com>
Signed-off-by: Cedric Le Goater <clg@fr.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-19 11:53:37 -07:00
..
irq Compile handle_percpu_irq even for uniprocessor kernels 2007-10-17 08:43:00 -07:00
power Hibernation: Enter platform hibernation state in a consistent way 2007-10-18 14:37:20 -07:00
time x86: C1E late detection fix. Really switch off lapic timer 2007-10-17 20:15:13 +02:00
.gitignore
acct.c whitespace fixes: process accounting 2007-10-18 14:37:24 -07:00
audit.c whitespace fixes: system auditing 2007-10-18 14:37:25 -07:00
audit.h
auditfilter.c whitespace fixes: audit filtering 2007-10-18 14:37:24 -07:00
auditsc.c whitespace fixes: syscall auditing 2007-10-18 14:37:25 -07:00
capability.c whitespace fixes: capability syscalls 2007-10-18 14:37:25 -07:00
cgroup_debug.c Task Control Groups: simple task cgroup debug info subsystem 2007-10-19 11:53:36 -07:00
cgroup.c Add cgroupstats 2007-10-19 11:53:36 -07:00
compat.c Merge ssh://master.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-hrt 2007-10-18 15:12:41 -07:00
configs.c
cpu_acct.c Task Control Groups: example CPU accounting subsystem 2007-10-19 11:53:36 -07:00
cpu.c cpu hotplug: cpu: deliver CPU_UP_CANCELED only to NOTIFY_OKed callbacks with CPU_UP_PREPARE 2007-10-18 14:37:21 -07:00
cpuset.c Task Control Groups: make cpusets a client of cgroups 2007-10-19 11:53:36 -07:00
delayacct.c Add scaled time to taskstats based process accounting 2007-10-18 14:37:28 -07:00
dma.c whitespace fixes: DMA channel allocator 2007-10-18 14:37:24 -07:00
exec_domain.c whitespace fixes: execution domains 2007-10-18 14:37:26 -07:00
exit.c Task Control Groups: make cpusets a client of cgroups 2007-10-19 11:53:36 -07:00
extable.c
fork.c Task Control Groups: make cpusets a client of cgroups 2007-10-19 11:53:36 -07:00
futex_compat.c
futex.c sparse pointer use of zero as null 2007-10-18 14:37:31 -07:00
hrtimer.c hrtimer: Rework hrtimer_nanosleep to make sys_compat_nanosleep easier 2007-10-18 22:54:18 +02:00
itimer.c whitespace fixes: interval timers 2007-10-18 14:37:26 -07:00
kallsyms.c
Kconfig.hz
Kconfig.preempt Move PREEMPT_NOTIFIERS into an always-included Kconfig 2007-10-17 08:42:55 -07:00
kexec.c sparse pointer use of zero as null 2007-10-18 14:37:31 -07:00
kfifo.c
kmod.c
kprobes.c kprobes: support kretprobe blacklist 2007-10-16 09:43:10 -07:00
ksysfs.c add-vmcore: cleanup the coding style according to Andrew's comments 2007-10-17 08:42:54 -07:00
kthread.c
latency.c
lockdep_internals.h
lockdep_proc.c
lockdep.c
Makefile cgroups: implement namespace tracking subsystem 2007-10-19 11:53:37 -07:00
module.c whitespace fixes: module loading 2007-10-18 14:37:25 -07:00
mutex-debug.c
mutex-debug.h
mutex.c
mutex.h
notifier.c Add kernel/notifier.c 2007-10-19 11:53:34 -07:00
ns_cgroup.c cgroups: implement namespace tracking subsystem 2007-10-19 11:53:37 -07:00
nsproxy.c cgroups: implement namespace tracking subsystem 2007-10-19 11:53:37 -07:00
panic.c whitespace fixes: panic handling 2007-10-18 14:37:25 -07:00
params.c param_sysfs_builtin memchr argument fix 2007-10-18 14:37:21 -07:00
pid.c
posix-cpu-timers.c
posix-timers.c hrtimer: Rework hrtimer_nanosleep to make sys_compat_nanosleep easier 2007-10-18 22:54:18 +02:00
printk.c serial: turn serial console suspend a boot rather than compile time option 2007-10-18 14:37:19 -07:00
profile.c make kernel/profile.c:time_hook static 2007-10-17 08:42:55 -07:00
ptrace.c m32r: convert to generic sys_ptrace 2007-10-16 09:43:04 -07:00
rcupdate.c Clean up duplicate includes in kernel/ 2007-10-17 08:42:48 -07:00
rcutorture.c Make rcutorture RNG use temporal entropy 2007-10-17 08:42:53 -07:00
relay.c whitespace fixes: relayfs 2007-10-18 14:37:24 -07:00
resource.c memory unplug: memory hotplug cleanup 2007-10-16 09:43:01 -07:00
rtmutex_common.h
rtmutex-debug.c kernel/rtmutex-debug.c: cleanups 2007-10-17 08:42:50 -07:00
rtmutex-debug.h
rtmutex-tester.c
rtmutex.c
rtmutex.h
rwsem.c
sched_debug.c sched: reduce schedstat variable overhead a bit 2007-10-18 21:32:56 +02:00
sched_fair.c sched: fix new task startup crash 2007-10-17 16:55:11 +02:00
sched_idletask.c
sched_rt.c
sched_stats.h sched: reduce schedstat variable overhead a bit 2007-10-18 21:32:56 +02:00
sched.c Task Control Groups: example CPU accounting subsystem 2007-10-19 11:53:36 -07:00
seccomp.c
signal.c freezer: do not send signals to kernel threads 2007-10-18 14:37:19 -07:00
softirq.c
softlockup.c softlockup: add a /proc tuning parameter 2007-10-17 08:42:47 -07:00
spinlock.c
srcu.c
stacktrace.c
stop_machine.c
sys_ni.c kernel/sys_ni.c: add dummy sys_ni_syscall() prototype 2007-10-17 08:42:55 -07:00
sys.c Add kernel/notifier.c 2007-10-19 11:53:34 -07:00
sysctl_check.c V3 file capabilities: alter behavior of cap_setpcap 2007-10-18 14:37:24 -07:00
sysctl.c V3 file capabilities: alter behavior of cap_setpcap 2007-10-18 14:37:24 -07:00
taskstats.c Add cgroupstats 2007-10-19 11:53:36 -07:00
time.c whitespace fixes: time syscalls 2007-10-18 14:37:24 -07:00
timer.c Add scaled time to taskstats based process accounting 2007-10-18 14:37:28 -07:00
tsacct.c Add scaled time to taskstats based process accounting 2007-10-18 14:37:28 -07:00
uid16.c
user_namespace.c
user.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched 2007-10-17 09:11:18 -07:00
utsname_sysctl.c
utsname.c
wait.c
workqueue.c