Hello, Linus.
This pull request includes Roman's cgroup2 freezer implementation.
It's a separate machanism from cgroup1 freezer. Instead of blocking
user tasks in arbitrary uninterruptible sleeps, the new implementation
extends jobctl stop - frozen tasks are trapped in jobctl stop until
thawed and can be killed and ptraced. Lots of thanks to Oleg for
sheperding the effort.
Other than that, there are a few trivial changes.
Thanks.
The following changes since commit 145f47c7381d43c789cbad55d4dbfd28fc6c46a4:
Merge tag '5.1-rc3-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6 (2019-04-03 20:21:25 -1000)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git for-5.2
for you to fetch changes up to f2b31bb598248c04721cb8485e6091a9feb045ac:
cgroup: never call do_group_exit() with task->frozen bit set (2019-05-09 07:56:47 -0700)
----------------------------------------------------------------
Fuqian Huang (1):
kernel: cgroup: fix misuse of %x
Roman Gushchin (12):
cgroup: rename freezer.c into legacy_freezer.c
cgroup: implement __cgroup_task_count() helper
cgroup: protect cgroup->nr_(dying_)descendants by css_set_lock
cgroup: cgroup v2 freezer
kselftests: cgroup: don't fail on cg_kill_all() error in cg_destroy()
kselftests: cgroup: add freezer controller self-tests
cgroup: make TRACE_CGROUP_PATH irq-safe
cgroup: add tracing points for cgroup v2 freezer
cgroup: document cgroup v2 freezer interface
cgroup: prevent spurious transition into non-frozen state
cgroup: get rid of cgroup_freezer_frozen_exit()
cgroup: never call do_group_exit() with task->frozen bit set
Shakeel Butt (1):
cgroup: remove extra cgroup_migrate_finish() call
Shaokun Zhang (1):
cgroup: Remove unused cgrp variable
Documentation/admin-guide/cgroup-v2.rst | 27 +
include/linux/cgroup-defs.h | 33 +
include/linux/cgroup.h | 43 ++
include/linux/sched.h | 2 +
include/linux/sched/jobctl.h | 2 +
include/trace/events/cgroup.h | 55 ++
kernel/cgroup/Makefile | 4 +-
kernel/cgroup/cgroup-internal.h | 8 +-
kernel/cgroup/cgroup-v1.c | 16 -
kernel/cgroup/cgroup.c | 152 ++++-
kernel/cgroup/debug.c | 8 +-
kernel/cgroup/freezer.c | 639 +++++++------------
kernel/cgroup/legacy_freezer.c | 481 +++++++++++++++
kernel/fork.c | 2 +
kernel/signal.c | 66 +-
tools/testing/selftests/cgroup/.gitignore | 1 +
tools/testing/selftests/cgroup/Makefile | 2 +
tools/testing/selftests/cgroup/cgroup_util.c | 58 +-
tools/testing/selftests/cgroup/cgroup_util.h | 5 +
tools/testing/selftests/cgroup/test_freezer.c | 851 ++++++++++++++++++++++++++
20 files changed, 2012 insertions(+), 443 deletions(-)
create mode 100644 kernel/cgroup/legacy_freezer.c
create mode 100644 tools/testing/selftests/cgroup/test_freezer.c
--
tejun
