linux-kernel - [PATCH v6 0/3] add dedicated wq for cgroup bpf and adjust WQ_MAX

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Message-Id: <20241008112458.49387-1-chenridong@huaweicloud.com>
Date: Tue,  8 Oct 2024 11:24:55 +0000
From: Chen Ridong <chenridong@...weicloud.com>
To: martin.lau@...ux.dev,
	ast@...nel.org,
	daniel@...earbox.net,
	andrii@...nel.org,
	eddyz87@...il.com,
	song@...nel.org,
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	jolsa@...nel.org,
	tj@...nel.org,
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	mkoutny@...e.com
Cc: bpf@...r.kernel.org,
	cgroups@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	chenridong@...wei.com
Subject: [PATCH v6 0/3] add dedicated wq for cgroup bpf and adjust WQ_MAX_ACTIVE

From: Chen Ridong <chenridong@...wei.com>

The patch series add a dedicated workqueue for cgroup bpf destruction,
add adjust WQ_MAX_ACTIVE from 512 to 2048.

v6:
- panic when the alloc_workqueue fails, suggested by Michal.
- update note in doc, suggested by Michal.

v5:
- use a dedicated workqueue for cgroup bpf destruction.
- update some messages for TJ's feedbacks.

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/bpf: use a dedicated workqueue for cgroup bpf destruction
  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 |  9 +++++++--
 include/linux/workqueue.h            |  2 +-
 kernel/bpf/cgroup.c                  | 19 ++++++++++++++++++-
 3 files changed, 26 insertions(+), 4 deletions(-)

-- 
2.34.1