From patchwork Tue May 9 01:50:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tejun Heo X-Patchwork-Id: 681812 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3C875C7EE25 for ; Tue, 9 May 2023 01:50:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233828AbjEIBux (ORCPT ); Mon, 8 May 2023 21:50:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43012 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233815AbjEIBum (ORCPT ); Mon, 8 May 2023 21:50:42 -0400 Received: from mail-pl1-x62e.google.com (mail-pl1-x62e.google.com [IPv6:2607:f8b0:4864:20::62e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 83A41A279; Mon, 8 May 2023 18:50:40 -0700 (PDT) Received: by mail-pl1-x62e.google.com with SMTP id d9443c01a7336-1aaec9ad820so49939085ad.0; Mon, 08 May 2023 18:50:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1683597040; x=1686189040; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:sender:from:to:cc:subject:date :message-id:reply-to; bh=qmncjnYD0YCdbiAl0XbmIMAaaEtLkUY+JzhiUY0+yqE=; b=mv4gwcbyAom9v/ntOCrdkUNTBnkSLE3OOiSUtx6dQ8HkLqT/mVu7JDDB5Le9seWEEd WG1G4VJ0jXB9J4Gh+9NGBPHBHN69z4cLU71mMesa1qSIVoz4SAMd5D43GgBYcr4/eOF5 z6veea5w9lhlE+i9g77L6ZJ8nWrjS5pMA6yALEGdzh++U2t92996kBHuNNOdRTgdUBTH x6+7yeuDY1yYej+NZcqwW2g8m4jLfcpGYadW1uPpfO734plAo3mo81gjPbQPWthmt+sk Go/DSTsxb+NKYc9TfxS0hn6CkVutlx1YNvj/QSPebwnWbntwuyFhZaatY5iguhCP7hNz gKaA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1683597040; x=1686189040; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:sender:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=qmncjnYD0YCdbiAl0XbmIMAaaEtLkUY+JzhiUY0+yqE=; b=dztFFMGVcBGKZGr+o3EmJRYl79qclNkBOjAN8yMdXAAN3Q+wrkY3EEvd1vhwhNsIUE yddBNqxSF93Gp3XyxvQER+O/zD/nfGautuRsAqW8sNnOFQRBJd+HXWfgTaYpdbmE5mzq EckKY2LQ5DbCbuYar3vX1OU3NMI6IBHVWz0y8le79rMM1skyKrYCbrJAM5SuCYhduyGL rma8KAVI15EjPDFDZ6oXivRTXY8iFwk4IyxmgkmOO3U6eYSFxHEKeNqF5SD5LIQtUR6U QqbPobN4Vg9629+b1RSNIP5b+8ocGNpz74IBtvfwap9g63zf8zp23NtQ2HVa8ObRVDYY mVPQ== X-Gm-Message-State: AC+VfDxMSFrevwhEwyPn27tDoIafAmA4bnrw548ThoNpgVqBcC2fR7p6 JtcYgBN3vxpPCBZETnLB1Xc= X-Google-Smtp-Source: ACHHUZ4sn+rHmNnAd7dRWLEd4zXW1JdTWXWI0Hd1JVnCAs9S0NZvu0ksCDUYgOdsqVDUFH5uxxyKVQ== X-Received: by 2002:a17:902:efc5:b0:19c:f096:bbef with SMTP id ja5-20020a170902efc500b0019cf096bbefmr11597712plb.49.1683597039617; Mon, 08 May 2023 18:50:39 -0700 (PDT) Received: from localhost (2603-800c-1a02-1bae-a7fa-157f-969a-4cde.res6.spectrum.com. [2603:800c:1a02:1bae:a7fa:157f:969a:4cde]) by smtp.gmail.com with ESMTPSA id u9-20020a170902e5c900b001ab12545508sm160050plf.67.2023.05.08.18.50.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 08 May 2023 18:50:39 -0700 (PDT) Sender: Tejun Heo From: Tejun Heo To: jiangshanlai@gmail.com Cc: linux-kernel@vger.kernel.org, kernel-team@meta.com, Tejun Heo , Amitkumar Karwar , Ganapathi Bhat , Sharvari Harisangam , Xinming Hu , Kalle Valo , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , linux-wireless@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH 02/13] wifi: mwifiex: Use default @max_active for workqueues Date: Mon, 8 May 2023 15:50:21 -1000 Message-Id: <20230509015032.3768622-3-tj@kernel.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230509015032.3768622-1-tj@kernel.org> References: <20230509015032.3768622-1-tj@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org These workqueues only host a single work item and thus doen't need explicit concurrency limit. Let's use the default @max_active. This doesn't cost anything and clearly expresses that @max_active doesn't matter. Signed-off-by: Tejun Heo Cc: Amitkumar Karwar Cc: Ganapathi Bhat Cc: Sharvari Harisangam Cc: Xinming Hu Cc: Kalle Valo Cc: "David S. Miller" Cc: Eric Dumazet Cc: Jakub Kicinski Cc: Paolo Abeni Cc: linux-wireless@vger.kernel.org Cc: netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org --- drivers/net/wireless/marvell/mwifiex/cfg80211.c | 4 ++-- drivers/net/wireless/marvell/mwifiex/main.c | 8 ++++---- 2 files changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/net/wireless/marvell/mwifiex/cfg80211.c b/drivers/net/wireless/marvell/mwifiex/cfg80211.c index bcd564dc3554..5337ee4b6f10 100644 --- a/drivers/net/wireless/marvell/mwifiex/cfg80211.c +++ b/drivers/net/wireless/marvell/mwifiex/cfg80211.c @@ -3127,7 +3127,7 @@ struct wireless_dev *mwifiex_add_virtual_intf(struct wiphy *wiphy, priv->dfs_cac_workqueue = alloc_workqueue("MWIFIEX_DFS_CAC%s", WQ_HIGHPRI | WQ_MEM_RECLAIM | - WQ_UNBOUND, 1, name); + WQ_UNBOUND, 0, name); if (!priv->dfs_cac_workqueue) { mwifiex_dbg(adapter, ERROR, "cannot alloc DFS CAC queue\n"); ret = -ENOMEM; @@ -3138,7 +3138,7 @@ struct wireless_dev *mwifiex_add_virtual_intf(struct wiphy *wiphy, priv->dfs_chan_sw_workqueue = alloc_workqueue("MWIFIEX_DFS_CHSW%s", WQ_HIGHPRI | WQ_UNBOUND | - WQ_MEM_RECLAIM, 1, name); + WQ_MEM_RECLAIM, 0, name); if (!priv->dfs_chan_sw_workqueue) { mwifiex_dbg(adapter, ERROR, "cannot alloc DFS channel sw queue\n"); ret = -ENOMEM; diff --git a/drivers/net/wireless/marvell/mwifiex/main.c b/drivers/net/wireless/marvell/mwifiex/main.c index ea22a08e6c08..1cd9d20cca16 100644 --- a/drivers/net/wireless/marvell/mwifiex/main.c +++ b/drivers/net/wireless/marvell/mwifiex/main.c @@ -1547,7 +1547,7 @@ mwifiex_reinit_sw(struct mwifiex_adapter *adapter) adapter->workqueue = alloc_workqueue("MWIFIEX_WORK_QUEUE", - WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1); + WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 0); if (!adapter->workqueue) goto err_kmalloc; @@ -1557,7 +1557,7 @@ mwifiex_reinit_sw(struct mwifiex_adapter *adapter) adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE", WQ_HIGHPRI | WQ_MEM_RECLAIM | - WQ_UNBOUND, 1); + WQ_UNBOUND, 0); if (!adapter->rx_workqueue) goto err_kmalloc; INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue); @@ -1702,7 +1702,7 @@ mwifiex_add_card(void *card, struct completion *fw_done, adapter->workqueue = alloc_workqueue("MWIFIEX_WORK_QUEUE", - WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1); + WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 0); if (!adapter->workqueue) goto err_kmalloc; @@ -1712,7 +1712,7 @@ mwifiex_add_card(void *card, struct completion *fw_done, adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE", WQ_HIGHPRI | WQ_MEM_RECLAIM | - WQ_UNBOUND, 1); + WQ_UNBOUND, 0); if (!adapter->rx_workqueue) goto err_kmalloc; From patchwork Tue May 9 01:50:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tejun Heo X-Patchwork-Id: 680503 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A4D87C7EE22 for ; Tue, 9 May 2023 01:51:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233900AbjEIBvJ (ORCPT ); Mon, 8 May 2023 21:51:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43080 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233895AbjEIBvD (ORCPT ); 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[2603:800c:1a02:1bae:a7fa:157f:969a:4cde]) by smtp.gmail.com with ESMTPSA id i12-20020a17090332cc00b001ac5896e96esm139330plr.207.2023.05.08.18.50.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 08 May 2023 18:50:44 -0700 (PDT) Sender: Tejun Heo From: Tejun Heo To: jiangshanlai@gmail.com Cc: linux-kernel@vger.kernel.org, kernel-team@meta.com, Tejun Heo , Kalle Valo , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , linux-wireless@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH 05/13] wifi: ath10/11/12k: Use alloc_ordered_workqueue() to create ordered workqueues Date: Mon, 8 May 2023 15:50:24 -1000 Message-Id: <20230509015032.3768622-6-tj@kernel.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230509015032.3768622-1-tj@kernel.org> References: <20230509015032.3768622-1-tj@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org BACKGROUND ========== When multiple work items are queued to a workqueue, their execution order doesn't match the queueing order. They may get executed in any order and simultaneously. When fully serialized execution - one by one in the queueing order - is needed, an ordered workqueue should be used which can be created with alloc_ordered_workqueue(). However, alloc_ordered_workqueue() was a later addition. Before it, an ordered workqueue could be obtained by creating an UNBOUND workqueue with @max_active==1. This originally was an implementation side-effect which was broken by 4c16bd327c74 ("workqueue: restore WQ_UNBOUND/max_active==1 to be ordered"). Because there were users that depended on the ordered execution, 5c0338c68706 ("workqueue: restore WQ_UNBOUND/max_active==1 to be ordered") made workqueue allocation path to implicitly promote UNBOUND workqueues w/ @max_active==1 to ordered workqueues. While this has worked okay, overloading the UNBOUND allocation interface this way creates other issues. It's difficult to tell whether a given workqueue actually needs to be ordered and users that legitimately want a min concurrency level wq unexpectedly gets an ordered one instead. With planned UNBOUND workqueue updates to improve execution locality and more prevalence of chiplet designs which can benefit from such improvements, this isn't a state we wanna be in forever. This patch series audits all callsites that create an UNBOUND workqueue w/ @max_active==1 and converts them to alloc_ordered_workqueue() as necessary. WHAT TO LOOK FOR ================ The conversions are from alloc_workqueue(WQ_UNBOUND | flags, 1, args..) to alloc_ordered_workqueue(flags, args...) which don't cause any functional changes. If you know that fully ordered execution is not ncessary, please let me know. I'll drop the conversion and instead add a comment noting the fact to reduce confusion while conversion is in progress. If you aren't fully sure, it's completely fine to let the conversion through. The behavior will stay exactly the same and we can always reconsider later. As there are follow-up workqueue core changes, I'd really appreciate if the patch can be routed through the workqueue tree w/ your acks. Thanks. Signed-off-by: Tejun Heo Cc: Kalle Valo Cc: "David S. Miller" Cc: Eric Dumazet Cc: Jakub Kicinski Cc: Paolo Abeni Cc: linux-wireless@vger.kernel.org Cc: netdev@vger.kernel.org Acked-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/qmi.c | 3 +-- drivers/net/wireless/ath/ath11k/qmi.c | 3 +-- drivers/net/wireless/ath/ath12k/qmi.c | 3 +-- 3 files changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/qmi.c b/drivers/net/wireless/ath/ath10k/qmi.c index 038c5903c0dc..52c1a3de8da6 100644 --- a/drivers/net/wireless/ath/ath10k/qmi.c +++ b/drivers/net/wireless/ath/ath10k/qmi.c @@ -1082,8 +1082,7 @@ int ath10k_qmi_init(struct ath10k *ar, u32 msa_size) if (ret) goto err; - qmi->event_wq = alloc_workqueue("ath10k_qmi_driver_event", - WQ_UNBOUND, 1); + qmi->event_wq = alloc_ordered_workqueue("ath10k_qmi_driver_event", 0); if (!qmi->event_wq) { ath10k_err(ar, "failed to allocate workqueue\n"); ret = -EFAULT; diff --git a/drivers/net/wireless/ath/ath11k/qmi.c b/drivers/net/wireless/ath/ath11k/qmi.c index ab923e24b0a9..26b252e62909 100644 --- a/drivers/net/wireless/ath/ath11k/qmi.c +++ b/drivers/net/wireless/ath/ath11k/qmi.c @@ -3256,8 +3256,7 @@ int ath11k_qmi_init_service(struct ath11k_base *ab) return ret; } - ab->qmi.event_wq = alloc_workqueue("ath11k_qmi_driver_event", - WQ_UNBOUND, 1); + ab->qmi.event_wq = alloc_ordered_workqueue("ath11k_qmi_driver_event", 0); if (!ab->qmi.event_wq) { ath11k_err(ab, "failed to allocate workqueue\n"); return -EFAULT; diff --git a/drivers/net/wireless/ath/ath12k/qmi.c b/drivers/net/wireless/ath/ath12k/qmi.c index 03ba245fbee9..0a7892b1a8f8 100644 --- a/drivers/net/wireless/ath/ath12k/qmi.c +++ b/drivers/net/wireless/ath/ath12k/qmi.c @@ -3056,8 +3056,7 @@ int ath12k_qmi_init_service(struct ath12k_base *ab) return ret; } - ab->qmi.event_wq = alloc_workqueue("ath12k_qmi_driver_event", - WQ_UNBOUND, 1); + ab->qmi.event_wq = alloc_ordered_workqueue("ath12k_qmi_driver_event", 0); if (!ab->qmi.event_wq) { ath12k_err(ab, "failed to allocate workqueue\n"); return -EFAULT;