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[139.178.88.99]) by mx.google.com with ESMTPS id dw5-20020a056a00368500b006d9c191dc57si4295635pfb.129.2023.12.27.06.49.57 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 Dec 2023 06:49:58 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-12060-ouuuleilei=gmail.com@vger.kernel.org designates 139.178.88.99 as permitted sender) client-ip=139.178.88.99; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20230601 header.b=fR2I1hg+; spf=pass (google.com: domain of linux-kernel+bounces-12060-ouuuleilei=gmail.com@vger.kernel.org designates 139.178.88.99 as permitted sender) smtp.mailfrom="linux-kernel+bounces-12060-ouuuleilei=gmail.com@vger.kernel.org"; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sv.mirrors.kernel.org (Postfix) with ESMTPS id CE7182823CC for ; Wed, 27 Dec 2023 14:49:57 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id E6EB24594F; Wed, 27 Dec 2023 14:49:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="fR2I1hg+" X-Original-To: linux-kernel@vger.kernel.org Received: from mail-pg1-f180.google.com (mail-pg1-f180.google.com [209.85.215.180]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1A6614502C for ; Wed, 27 Dec 2023 14:49:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-pg1-f180.google.com with SMTP id 41be03b00d2f7-5ca29c131ebso4093476a12.0 for ; Wed, 27 Dec 2023 06:49:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1703688581; x=1704293381; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=kkGPszZg+bkMDC2+6bc9aA8zr9G0a3W4ZkTQIcxWRD8=; b=fR2I1hg+ik2Ni0ap0u9BYkdWh8qlshHVFn+VhK+44EGh7r0oxNY5lIhZb86kECnq3b oxafnpnKLgeb/kQjqPMayV08k5/OGhYiilcIJ2y9j6i3+QzvKL2V38FiMpY0AjI8e2JA /qPYzyn1c8EVjgM6TANE2ZAOa5ggoO7vkO+jh0PCiJDsR2QlXbe3toOgwWlf/7/RmpcI 6ytRZqp94+tx6jaYghgNE5AE4+MNIPZaTsvjLzd4g692ptzcKhri7cuOBEphp4C+u6kx rCSteg+zn68C5HcUwrl+PWz7NR8/MSNIpH4tU+S+6ZMRFx/LNHTEWKUZ/oblUEW4GTyA MB/w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1703688581; x=1704293381; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=kkGPszZg+bkMDC2+6bc9aA8zr9G0a3W4ZkTQIcxWRD8=; b=G8V/wrtRT45kIKBIe5B1HAXh99SWU3+b85ezpJq7HQVKpV1ppwHrDnDyDJe5ng4OEf 7QHcsxmIBH5om56LMVxARqmIWzoJnSMbG5NJA5O/awBGDr4ByINb1+Zs0JSJyHqU7oQf tAfPT34tYJAEpVDGwYQergc0LvM3V7daDY3vcOti4zgOP03VsI/q6oTCiSI7MFMaYxnZ T3UF43m0mc6Q3652OfywqdPF5OGvqUd/aHx38xvlXQMW62STpNaO7LFGSrpGbd+A3Cf7 LzRY/J9+wCM4/w1DBqvTxBPx1Ta1B033GXteW8iZ24XF4gjjtnsi1xZti/8XGfgu1q61 yfAw== X-Gm-Message-State: AOJu0Yxo+SShPueNRcgEPVc2QK8JiRu+6zDkbQ0/RSGdQev4PvnX4MRS WBt7y3/cjHKbi/jB1ygI6EOllMz6VKs= X-Received: by 2002:a17:90a:51a6:b0:28c:c31:244e with SMTP id u35-20020a17090a51a600b0028c0c31244emr3775116pjh.59.1703688580844; Wed, 27 Dec 2023 06:49:40 -0800 (PST) Received: from localhost ([47.254.32.37]) by smtp.gmail.com with ESMTPSA id w5-20020a17090a6b8500b0028bd0a43bc9sm13810502pjj.2.2023.12.27.06.49.40 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 27 Dec 2023 06:49:40 -0800 (PST) From: Lai Jiangshan To: linux-kernel@vger.kernel.org Cc: Tejun Heo , Naohiro.Aota@wdc.com, Lai Jiangshan Subject: [PATCH 0/7] workqueue: Share the same PWQ for the CPUs of a pod and distribute max_active across pods Date: Wed, 27 Dec 2023 22:51:36 +0800 Message-Id: <20231227145143.2399-1-jiangshanlai@gmail.com> X-Mailer: git-send-email 2.19.1.6.gb485710b Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1786446975763796451 X-GMAIL-MSGID: 1786446975763796451 From: Lai Jiangshan A different approach to fix the misbehavior can easily be exposed as reported in http://lkml.kernel.org/r/dbu6wiwu3sdhmhikb2w6lns7b27gbobfavhjj57kwi2quafgwl@htjcc5oikcr3. Lai Jiangshan (6): workqueue: Reuse the default PWQ as much as possible workqueue: Share the same PWQ for the CPUs of a pod workqueue: Add pwq_calculate_max_active() workqueue: Wrap common code into wq_adjust_pwqs_max_active() workqueue: Addjust pwq's max_active when CPU online/offine workqueue: Rename wq->saved_max_active to wq->max_active Tejun Heo (1): workqueue: Implement system-wide max_active enforcement for unbound workqueues include/linux/workqueue.h | 34 +++++- kernel/workqueue.c | 217 ++++++++++++++++++++++---------------- 2 files changed, 157 insertions(+), 94 deletions(-)