From patchwork Tue Oct 8 11:24:55 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen Ridong X-Patchwork-Id: 13826316 Received: from dggsgout11.his.huawei.com (dggsgout11.his.huawei.com [45.249.212.51]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 59C523FB1B; Tue, 8 Oct 2024 11:33:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.51 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728387214; cv=none; b=ji09fVVuyjOnoFhR7CXd9TedFy+lOLn7eRjs9lGX5m2PMvrglBbe0y0+rH3THF6HX9hZUq2Y+3EXs3PQ3MmimENA8PyMGJVNv+qzcbaHUIbbzNiLe6O3BJASclorlozeYD1qj/Tg/jywvBmCIs0RE5r6pZqInDWaZOOpQEw0gKI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728387214; c=relaxed/simple; bh=Xo5hr2Z/phfzdARgUFAXJIv7Jrg83DR61al9GaBKdDY=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=sI4y/bKrktAncBtQw7QHWCwzwhuW3Nl4nK0LARYK9U7abMDRwIb3hUS/Meco6eUTSYBjwFBqFjvW5Emxcvx70e8Vq78impZCvjDDw3/2dMv5jgUOlfzjpynqS6M0J4BsMyRngWWTqbYnnhhxgv0ueyvvIxTtdtBFJlNBZnmjGrg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com; spf=pass smtp.mailfrom=huaweicloud.com; arc=none smtp.client-ip=45.249.212.51 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huaweicloud.com Received: from mail.maildlp.com (unknown [172.19.163.216]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTP id 4XNDRC0Zk3z4f3jMF; Tue, 8 Oct 2024 19:33:11 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.128]) by mail.maildlp.com (Postfix) with ESMTP id 982661A08FC; Tue, 8 Oct 2024 19:33:28 +0800 (CST) Received: from hulk-vt.huawei.com (unknown [10.67.174.121]) by APP4 (Coremail) with SMTP id gCh0CgAnqMRuGAVnI_ERDg--.13677S2; Tue, 08 Oct 2024 19:33:26 +0800 (CST) From: Chen Ridong To: martin.lau@linux.dev, ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, eddyz87@gmail.com, song@kernel.org, yonghong.song@linux.dev, john.fastabend@gmail.com, kpsingh@kernel.org, sdf@google.com, haoluo@google.com, jolsa@kernel.org, tj@kernel.org, lizefan.x@bytedance.com, hannes@cmpxchg.org, roman.gushchin@linux.dev, mkoutny@suse.com Cc: bpf@vger.kernel.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, chenridong@huawei.com Subject: [PATCH v6 0/3] add dedicated wq for cgroup bpf and adjust WQ_MAX_ACTIVE Date: Tue, 8 Oct 2024 11:24:55 +0000 Message-Id: <20241008112458.49387-1-chenridong@huaweicloud.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: gCh0CgAnqMRuGAVnI_ERDg--.13677S2 X-Coremail-Antispam: 1UD129KBjvJXoWrtrWUCw15Zr4DAw1UtF17trb_yoW8JrW7pF Z5CFW3ta15Cr17G3sIyw429FWfKa18Jr4UWr17Jw10y342vryj9FWI9r1Yqas7tF93G345 XF9I9ryFk34jvrUanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUvFb4IE77IF4wAFF20E14v26ryj6rWUM7CY07I20VC2zVCF04k2 6cxKx2IYs7xG6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4 vEj48ve4kI8wA2z4x0Y4vE2Ix0cI8IcVAFwI0_Xr0_Ar1l84ACjcxK6xIIjxv20xvEc7Cj xVAFwI0_Cr0_Gr1UM28EF7xvwVC2z280aVAFwI0_GcCE3s1l84ACjcxK6I8E87Iv6xkF7I 0E14v26rxl6s0DM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40E x7xfMcIj6xIIjxv20xvE14v26r106r15McIj6I8E87Iv67AKxVWUJVW8JwAm72CE4IkC6x 0Yz7v_Jr0_Gr1lF7xvr2IYc2Ij64vIr41lFIxGxcIEc7CjxVA2Y2ka0xkIwI1lc7CjxVAa w2AFwI0_GFv_Wryl42xK82IYc2Ij64vIr41l4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1lx2IqxV Aqx4xG67AKxVWUJVWUGwC20s026x8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v26r4a 6rW5MIIYrxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_Jr0_JF4lIxAIcVC0I7IYx2IY6x kF7I0E14v26r4j6F4UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI42IY6I8E87Iv67AK xVWUJVW8JwCI42IY6I8E87Iv6xkF7I0E14v26r4j6r4UJbIYCTnIWIevJa73UjIFyTuYvj xUxo7KDUUUU X-CM-SenderInfo: hfkh02xlgr0w46kxt4xhlfz01xgou0bp/ From: Chen Ridong 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(-)