Return-path: Received: from smtp.codeaurora.org ([198.145.29.96]:38336 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750910AbcFDO30 (ORCPT ); Sat, 4 Jun 2016 10:29:26 -0400 From: Kalle Valo To: Bhaktipriya Shridhar Cc: Andreas Kemnade , Dan Carpenter , "Andrew F. Davis" , Jonathan Cameron , Mark Brown , Tejun Heo , libertas-dev@lists.infradead.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] net: wireless: marvell: libertas: Remove create_workqueue References: <20160604135901.GA29897@Karyakshetra> Date: Sat, 04 Jun 2016 17:29:20 +0300 In-Reply-To: <20160604135901.GA29897@Karyakshetra> (Bhaktipriya Shridhar's message of "Sat, 4 Jun 2016 19:29:01 +0530") Message-ID: <87h9d9t4cf.fsf@kamboji.qca.qualcomm.com> (sfid-20160604_162953_717748_5E29B6D0) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-wireless-owner@vger.kernel.org List-ID: Bhaktipriya Shridhar writes: > alloc_workqueue replaces deprecated create_workqueue(). > > In if_sdio.c, the workqueue card->workqueue has workitem > &card->packet_worker, which is mapped to if_sdio_host_to_card_worker. > The workitem is involved in sending packets to firmware. > Forward progress under memory pressure is a requirement here. > > In if_spi.c, the workqueue card->workqueue has workitem > &card->packet_worker, which is mapped to if_spi_host_to_card_worker. > The workitem is involved in sending command packets from the host. > Forward progress under memory pressure is a requirement here. > > Dedicated workqueues have been used in both cases since the workitems > on the workqueues are involved in normal device operation with > WQ_MEM_RECLAIM set to gurantee forward progress under memory pressure. > Since there are only a fixed number of work items, explicit concurrency > limit is unnecessary. > > flush_workqueue is unnecessary since destroy_workqueue() itself calls > drain_workqueue() which flushes repeatedly till the workqueue > becomes empty. Hence the calls to flush_workqueue() before > destroy_workqueue() have been dropped. > > Signed-off-by: Bhaktipriya Shridhar "libertas:" as a prefix is enough, no need to put the full path to the title. I can fix that this time. You can actually check yourself what prefix is commonly used in a particular file or directory: $ git log --oneline --no-merges -10 drivers/net/wireless/marvell/libertas/ 57fbcce37be7 cfg80211: remove enum ieee80211_band 3691ac4a9c95 libertas: fix an error code in probe 143e49458424 libertas: add an cfg80211 interface for powersaving 0b8802dc5f59 libertas: fix ps-mode related removal problems fada24a54770 libertas: go back to ps mode without commands pending 57954b94cad7 libertas: do not confirm sleep if commands are pending fae4f9f78ab1 libertas: check whether bus can do more than polling 0a7701b4defc libertas: fix pointer bugs for PS_MODE commands 6d91ff7acc90 libertas: cleanup a variable name 0a38c8e1b592 libertas: check for NULL before use $ -- Kalle Valo