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Star64_linux/kernel/cgroup
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Dietmar Eggemann e026ec9262 cgroup/cpuset: Free DL BW in case can_attach() fails 
commit 2ef269ef1a upstream.

cpuset_can_attach() can fail. Postpone DL BW allocation until all tasks
have been checked. DL BW is not allocated per-task but as a sum over
all DL tasks migrating.

If multiple controllers are attached to the cgroup next to the cpuset
controller a non-cpuset can_attach() can fail. In this case free DL BW
in cpuset_cancel_attach().

Finally, update cpuset DL task count (nr_deadline_tasks) only in
cpuset_attach().

Suggested-by: Waiman Long <longman@redhat.com>
Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Signed-off-by: Juri Lelli <juri.lelli@redhat.com>
Reviewed-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
[ Conflict in kernel/cgroup/cpuset.c due to pulling extra neighboring
  functions that are not applicable on this branch. ]
Signed-off-by: Qais Yousef (Google) <qyousef@layalina.io>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-09-05 01:25:10 +08:00
..
cgroup-internal.h memcg: fix possible use-after-free in memcg_write_event_control() 2023-04-19 17:56:58 +08:00
cgroup-v1.c cgroup: Add missing cpus_read_lock() to cgroup_attach_task_all() 2023-04-19 17:53:56 +08:00
cgroup.c sched/cpuset: Keep track of SCHED_DEADLINE task in cpusets 2023-09-05 01:25:10 +08:00
cpuset.c cgroup/cpuset: Free DL BW in case can_attach() fails 2023-09-05 01:25:10 +08:00
debug.c kernel: cgroup: fix misuse of %x 2019-05-06 08:47:48 -07:00
freezer.c cgroup: freezer: don't change task and cgroups status unnecessarily 2019-11-07 07:38:41 -08:00
legacy_freezer.c cgroup: rename freezer.c into legacy_freezer.c 2019-04-19 11:26:48 -07:00
Makefile cgroup: Add misc cgroup controller 2021-04-04 13:34:46 -04:00
misc.c svm/sev: Register SEV and SEV-ES ASIDs to the misc controller 2021-04-04 13:34:46 -04:00
namespace.c memcg: enable accounting for new namesapces and struct nsproxy 2021-09-03 09:58:12 -07:00
pids.c clone3: allow spawning processes into cgroups 2020-02-12 17:57:51 -05:00
rdma.c cgroup: fix spelling mistakes 2021-05-24 12:45:26 -04:00
rstat.c cgroup: Fix rootcg cpu.stat guest double counting 2023-04-19 16:57:32 +08:00