From: Yi Tao <escape@linux.alibaba.com>
To: tj@kernel.org, hannes@cmpxchg.org, mkoutny@suse.com
Cc: cgroups@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v2 0/1] cgroup: replace global percpu_rwsem with signal_struct->group_rwsem when writing cgroup.procs/threads
Date: Thu, 4 Sep 2025 19:39:31 +0800 [thread overview]
Message-ID: <cover.1756985260.git.escape@linux.alibaba.com> (raw)
In-Reply-To: <f460f494245710c5b6649d6cc7e68b3a28a0a000.1756896828.git.escape@linux.alibaba.com>
Changes in v2:
- Use favordynmods as the enabling switch.
- Determine whether to use the per-thread-group rwsem based on whether
the task is NULL.
- Fix system hang caused by acquiring cgroup_threadgroup_rwsem inside
rcu_read_lock.
Yi Tao (1):
cgroup: replace global percpu_rwsem with signal_struct->group_rwsem
when writing cgroup.procs/threads
include/linux/cgroup-defs.h | 6 +++
include/linux/sched/signal.h | 4 ++
init/init_task.c | 3 ++
kernel/cgroup/cgroup-internal.h | 4 +-
kernel/cgroup/cgroup-v1.c | 8 ++--
kernel/cgroup/cgroup.c | 72 +++++++++++++++++++--------------
kernel/fork.c | 4 ++
7 files changed, 64 insertions(+), 37 deletions(-)
--
2.32.0.3.g01195cf9f
next prev parent reply other threads:[~2025-09-04 11:39 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-03 11:11 [PATCH] cgroup: replace global percpu_rwsem with signal_struct->group_rwsem when writing cgroup.procs/threads Yi Tao
2025-09-03 13:14 ` Waiman Long
2025-09-04 1:35 ` Chen Ridong
2025-09-04 4:59 ` escape
2025-09-04 5:02 ` escape
2025-09-03 16:53 ` Tejun Heo
2025-09-03 20:03 ` Michal Koutný
2025-09-03 20:45 ` Tejun Heo
2025-09-04 1:40 ` Chen Ridong
2025-09-04 6:43 ` escape
2025-09-04 6:52 ` Tejun Heo
2025-09-04 3:15 ` escape
2025-09-04 6:38 ` escape
2025-09-04 7:28 ` Tejun Heo
2025-09-04 8:10 ` escape
2025-09-04 11:39 ` Yi Tao [this message]
2025-09-04 11:39 ` [PATCH v2 1/1] " Yi Tao
2025-09-04 16:31 ` Tejun Heo
2025-09-05 2:16 ` escape
2025-09-05 2:27 ` Tejun Heo
2025-09-05 3:44 ` escape
2025-09-05 3:48 ` Tejun Heo
2025-09-05 4:30 ` escape
2025-09-05 2:02 ` Chen Ridong
2025-09-05 13:17 ` kernel test robot
2025-09-08 10:20 ` [PATCH v3 0/1] cgroup: replace global percpu_rwsem with per threadgroup resem when writing to cgroup.procs Yi Tao
2025-09-08 10:20 ` [PATCH v3 1/1] " Yi Tao
2025-09-08 16:05 ` Tejun Heo
2025-09-08 19:39 ` Waiman Long
2025-09-09 7:55 ` [PATCH v4 0/3] " Yi Tao
2025-09-09 7:55 ` [PATCH v4 1/3] " Yi Tao
2025-09-09 7:55 ` [PATCH v4 2/3] cgroup: retry find task if threadgroup leader changed Yi Tao
2025-09-09 16:59 ` Tejun Heo
2025-09-09 7:55 ` [PATCH v4 3/3] cgroup: refactor the cgroup_attach_lock code to make it clearer Yi Tao
2025-09-09 17:00 ` Tejun Heo
2025-09-10 6:59 ` [PATCH v5 0/3] cgroup: replace global percpu_rwsem with per threadgroup resem when writing to cgroup.procs Yi Tao
2025-09-10 6:59 ` [PATCH v5 1/3] cgroup: refactor the cgroup_attach_lock code to make it clearer Yi Tao
2025-09-10 17:26 ` Tejun Heo
2025-09-10 6:59 ` [PATCH v5 2/3] cgroup: relocate cgroup_attach_lock within cgroup_procs_write_start Yi Tao
2025-09-10 17:31 ` Tejun Heo
2025-09-11 3:22 ` Waiman Long
2025-09-10 6:59 ` [PATCH v5 3/3] cgroup: replace global percpu_rwsem with per threadgroup resem when writing to cgroup.procs Yi Tao
2025-09-10 17:47 ` Tejun Heo
2025-09-11 1:52 ` Yi Tao
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=cover.1756985260.git.escape@linux.alibaba.com \
--to=escape@linux.alibaba.com \
--cc=cgroups@vger.kernel.org \
--cc=hannes@cmpxchg.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mkoutny@suse.com \
--cc=tj@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.