Tejun Heo
10265075aa
cgroup: make cgroup_update_dfl_csses() migrate all target processes atomically
...
cgroup_update_dfl_csses() is responsible for migrating processes when
controllers are enabled or disabled on the default hierarchy. As the
css association changes for all the processes in the affected cgroups,
this involves migrating multiple processes.
Up until now, it was implemented by migrating process-by-process until
the source css_sets are empty; however, this means that if a process
fails to migrate after some succeed before it, the recovery is very
tricky. This was considered okay as subsystems weren't allowed to
reject process migration on the default hierarchy; unfortunately,
enforcing this policy turned out to be problematic for certain types
of resources - realtime slices for now.
As such, the default hierarchy is gonna allow restricted failures
during migration and to support that this patch makes
cgroup_update_dfl_csses() migrate all target processes atomically
rather than one-by-one. The preceding patches made subsystems ready
for multi-process migration and factored out taskset operations making
this almost trivial. All tasks of the target processes are put in the
same taskset and the migration operations are performed once which
either fails or succeeds for all.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Zefan Li <lizefan@huawei.com>
2015-09-22 12:46:53 -04:00
..
bpf
bpf: fix out of bounds access in verifier log
2015-09-09 14:11:55 -07:00
configs
kconfig: add xenconfig defconfig helper
2015-06-16 11:04:29 +01:00
debug
events
kexec: split kexec_load syscall from kexec core code
2015-09-10 13:29:01 -07:00
gcov
gcov: add support for GCC 5.1
2015-06-30 19:44:57 -07:00
irq
Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2015-09-01 14:33:35 -07:00
livepatch
livepatch: Improve error handling in klp_disable_func()
2015-07-14 22:48:06 +02:00
locking
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-09-05 20:34:28 -07:00
power
Merge branch 'for-4.3/core' of git://git.kernel.dk/linux-block
2015-09-02 13:10:25 -07:00
printk
kexec: split kexec_load syscall from kexec core code
2015-09-10 13:29:01 -07:00
rcu
rcu,locking: Privatize smp_mb__after_unlock_lock()
2015-08-04 08:49:21 -07:00
sched
userfaultfd: waitqueue: add nr wake parameter to __wake_up_locked_key
2015-09-04 16:54:41 -07:00
time
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2015-09-01 14:04:50 -07:00
trace
Mostly this is just clean ups and micro optimizations.
2015-09-08 14:04:14 -07:00
.gitignore
acct.c
async.c
audit.c
Merge branch 'upstream' of git://git.infradead.org/users/pcmoore/audit
2015-09-08 13:34:59 -07:00
audit.h
Merge branch 'upstream' of git://git.infradead.org/users/pcmoore/audit
2015-09-08 13:34:59 -07:00
audit_fsnotify.c
audit: clean simple fsnotify implementation
2015-08-06 16:14:53 -04:00
audit_tree.c
Merge branch 'upstream' of git://git.infradead.org/users/pcmoore/audit
2015-09-08 13:34:59 -07:00
audit_watch.c
Merge branch 'upstream' of git://git.infradead.org/users/pcmoore/audit
2015-09-08 13:34:59 -07:00
auditfilter.c
audit: implement audit by executable
2015-08-06 16:17:25 -04:00
auditsc.c
Merge branch 'upstream' of git://git.infradead.org/users/pcmoore/audit
2015-09-08 13:34:59 -07:00
backtracetest.c
bounds.c
capability.c
cgroup.c
cgroup: make cgroup_update_dfl_csses() migrate all target processes atomically
2015-09-22 12:46:53 -04:00
cgroup_freezer.c
cgroup: allow a cgroup subsystem to reject a fork
2015-07-14 17:29:23 -04:00
cgroup_pids.c
cgroup: pids: fix invalid get/put usage
2015-08-25 14:19:25 -04:00
compat.c
configs.c
context_tracking.c
cpu.c
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2015-08-31 20:26:22 -07:00
cpu_pm.c
kernel/cpu_pm: fix cpu_cluster_pm_exit comment
2015-09-03 02:42:20 +02:00
cpuset.c
cgroup, memcg, cpuset: implement cgroup_taskset_for_each_leader()
2015-09-22 12:46:53 -04:00
crash_dump.c
cred.c
kernel/cred.c: remove unnecessary kdebug atomic reads
2015-09-10 13:29:01 -07:00
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c
kernel: exit: fix typo in comment
2015-08-07 13:59:49 +02:00
extable.c
kernel/extable.c: remove duplicated include
2015-09-10 13:29:01 -07:00
fork.c
sched, cgroup: replace signal_struct->group_rwsem with a global percpu_rwsem
2015-09-16 12:53:17 -04:00
freezer.c
futex.c
futex: Make should_fail_futex() static
2015-07-20 21:43:54 +02:00
futex_compat.c
groups.c
hung_task.c
irq_work.c
jump_label.c
locking/static_keys: Add selftest
2015-08-03 11:34:16 +02:00
kallsyms.c
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kexec.c
kexec: split kexec_load syscall from kexec core code
2015-09-10 13:29:01 -07:00
kexec_core.c
kexec: export KERNEL_IMAGE_SIZE to vmcoreinfo
2015-09-10 13:29:01 -07:00
kexec_file.c
kexec: split kexec_file syscall code to kexec_file.c
2015-09-10 13:29:01 -07:00
kexec_internal.h
kexec: split kexec_file syscall code to kexec_file.c
2015-09-10 13:29:01 -07:00
kmod.c
kmod: handle UMH_WAIT_PROC from system unbound workqueue
2015-09-10 13:29:01 -07:00
kprobes.c
perf/x86/hw_breakpoints: Disallow kernel breakpoints unless kprobe-safe
2015-08-04 10:16:54 +02:00
ksysfs.c
kexec: split kexec_load syscall from kexec core code
2015-09-10 13:29:01 -07:00
kthread.c
kernel/kthread.c:kthread_create_on_node(): clarify documentation
2015-09-04 16:54:41 -07:00
latencytop.c
Makefile
sys_membarrier(): system-wide memory barrier (generic, x86)
2015-09-11 15:21:34 -07:00
membarrier.c
sys_membarrier(): system-wide memory barrier (generic, x86)
2015-09-11 15:21:34 -07:00
memremap.c
add devm_memremap_pages
2015-08-27 19:40:58 -04:00
module-internal.h
module.c
module: weaken locking assertion for oops path.
2015-07-29 06:13:22 +09:30
module_signing.c
PKCS#7: Appropriately restrict authenticated attributes and content type
2015-08-12 17:01:01 +01:00
notifier.c
Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2015-09-01 08:40:25 -07:00
nsproxy.c
padata.c
panic.c
kernel/panic/kexec: fix "crash_kexec_post_notifiers" option issue in oops path
2015-06-30 19:44:57 -07:00
params.c
Minor merge needed, due to function move.
2015-07-01 10:49:25 -07:00
pid.c
rcu: Rename rcu_lockdep_assert() to RCU_LOCKDEP_WARN()
2015-07-22 15:27:32 -07:00
pid_namespace.c
profile.c
mm: rename alloc_pages_exact_node() to __alloc_pages_node()
2015-09-08 15:35:28 -07:00
ptrace.c
seccomp: add ptrace options for suspend/resume
2015-07-15 11:52:52 -07:00
range.c
reboot.c
kexec: split kexec_load syscall from kexec core code
2015-09-10 13:29:01 -07:00
relay.c
kernel/relay.c: use kvfree() in relay_free_page_array()
2015-06-30 19:44:59 -07:00
resource.c
mm: enhance region_is_ram() to region_intersects()
2015-08-10 23:07:05 -04:00
seccomp.c
Merge tag 'seccomp-next' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux into next
2015-07-20 17:19:19 +10:00
signal.c
signal: fix information leak in copy_siginfo_to_user
2015-08-07 04:39:40 +03:00
smp.c
smpboot.c
smpboot: allow passing the cpumask on per-cpu thread registration
2015-09-04 16:54:41 -07:00
smpboot.h
softirq.c
stacktrace.c
stop_machine.c
stop_machine: Remove cpu_stop_work's from list in cpu_stop_park()
2015-08-03 12:21:28 +02:00
sys.c
vfs: Commit to never having exectuables on proc and sysfs.
2015-07-10 10:39:25 -05:00
sys_ni.c
sys_membarrier(): system-wide memory barrier (generic, x86)
2015-09-11 15:21:34 -07:00
sysctl.c
sysctl: fix int -> unsigned long assignments in INT_MIN case
2015-09-10 13:29:01 -07:00
sysctl_binary.c
task_work.c
task_work: remove fifo ordering guarantee
2015-09-05 13:46:58 -07:00
taskstats.c
test_kprobes.c
torture.c
tracepoint.c
tsacct.c
uid16.c
up.c
user-return-notifier.c
user.c
user_namespace.c
capabilities: ambient capabilities
2015-09-04 16:54:41 -07:00
utsname.c
utsname_sysctl.c
watchdog.c
watchdog: rename watchdog_suspend() and watchdog_resume()
2015-09-04 16:54:41 -07:00
workqueue.c
Merge branch 'for-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
2015-09-02 08:02:20 -07:00
workqueue_internal.h