linux-kernel - [PATCH v4 0/3] Fix deadlock caused by cgroup_mutex and cpu_hotplug

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Message-ID: <20240913131720.1762188-1-chenridong@huawei.com>
Date: Fri, 13 Sep 2024 13:17:17 +0000
From: Chen Ridong <chenridong@...wei.com>
To: <martin.lau@...ux.dev>, <ast@...nel.org>, <daniel@...earbox.net>,
	<andrii@...nel.org>, <eddyz87@...il.com>, <song@...nel.org>,
	<yonghong.song@...ux.dev>, <john.fastabend@...il.com>, <kpsingh@...nel.org>,
	<sdf@...gle.com>, <haoluo@...gle.com>, <jolsa@...nel.org>, <tj@...nel.org>,
	<lizefan.x@...edance.com>, <hannes@...xchg.org>, <roman.gushchin@...ux.dev>
CC: <bpf@...r.kernel.org>, <cgroups@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH v4 0/3]  Fix deadlock caused by cgroup_mutex and cpu_hotplug_lock

The patch 1 have been reviewed by Michal Koutný.
Add two patches as follow.

v4:
- add a patch to document that saturating the system_wq is not permitted.
- add a patch to adjust WQ_MAX_ACTIVE from 512 to 2048.

v3:
- optimize commit msg.

Link v1: https://lore.kernel.org/cgroups/20240607110313.2230669-1-chenridong@huawei.com/
Link v2: https://lore.kernel.org/cgroups/20240719025232.2143638-1-chenridong@huawei.com/
Link v3: https://lore.kernel.org/cgroups/20240817093334.6062-1-chenridong@huawei.com/


Chen Ridong (3):
  cgroup: fix deadlock caused by cgroup_mutex and cpu_hotplug_lock
  workqueue: doc: Add a note saturating the system_wq is not permitted
  workqueue: Adjust WQ_MAX_ACTIVE from 512 to 2048

 Documentation/core-api/workqueue.rst | 8 ++++++--
 include/linux/workqueue.h            | 2 +-
 kernel/bpf/cgroup.c                  | 2 +-
 kernel/cgroup/cgroup-internal.h      | 1 +
 kernel/cgroup/cgroup.c               | 2 +-
 5 files changed, 10 insertions(+), 5 deletions(-)

-- 
2.34.1