From patchwork Thu Oct 25 21:10:14 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jens Axboe X-Patchwork-Id: 10656487 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 881241751 for ; Thu, 25 Oct 2018 21:10:53 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7CA562C648 for ; Thu, 25 Oct 2018 21:10:53 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7154E2C652; Thu, 25 Oct 2018 21:10:53 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C52752C64C for ; Thu, 25 Oct 2018 21:10:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726275AbeJZFpJ (ORCPT ); Fri, 26 Oct 2018 01:45:09 -0400 Received: from mail-it1-f194.google.com ([209.85.166.194]:53868 "EHLO mail-it1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726291AbeJZFpJ (ORCPT ); Fri, 26 Oct 2018 01:45:09 -0400 Received: by mail-it1-f194.google.com with SMTP id q70-v6so3337473itb.3 for ; Thu, 25 Oct 2018 14:10:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=kifJNxBDs4sUaIINbXEMALHK5lGNkLU49xmwd6H0m9Y=; b=jPCAmnQUsgLW5yrvvdsA796j0VjvRRtvMPQBgXHBkGIw+1grW5xluHhhXEZUUIBscn fXE1hixpG9RUTjw9w7JPKtZzaTeKIM77+LGw751aMJpI6BUuoxYx7JNtAoqSO4+a17aX I5G02sNlnsSzWLYQQqcAHW/bllnORMh0KYrQ+i8XtmWeHQID3u6QKzQPHQWOHqcn4BEW SWBhCajUZqoRSMFdW6HBljSMDd2KbH7iFWFdyjqZUicCCnMp2oo0Ox1pmgXtpTj++Icc dHoYZxR/mw1rp99BqVyS9b9xTT094pimrY2xlsLZScaPy+tnsoTQaDdueBYMsQsAL/3L Ysdg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=kifJNxBDs4sUaIINbXEMALHK5lGNkLU49xmwd6H0m9Y=; b=n1elSgHSiOxsDMS57Pao4qrzoAA2cHNdBdmKExhMK5yv+0ICteNBt8ghpNKLIhUmHZ OqPxcwcwSn+HRi9ZiOT+XUHiQlj32J5Ac5OWfA7VrEX3IA/FtejhmCmVahlycWZ01dcR nP7zVOxOKPQc+rsb7O4lczobfDBQwBSXbyclhqEWRL4aORo5/o+YRT7tQVIz8LTcqazU 55axo6jq+oiZ3vmShfcvKUUxia4c0eNeHT1uUBTKDjliggLpogLIfOpsqS92PGthWztK 6f8R4Sz8ufVAIBrVcXz0bbPet+z7n5hNjlqcvEY5sjXMYlpQh/YVrJwdsj6lGCcr5PS7 8OZg== X-Gm-Message-State: AGRZ1gLyQiqR52hCnyoe7tNRQxVvc2lPamvHuFR7HaePAx4dg9N/KpNO 3fgePWuyfdc3Ao48kk/2Z7qQFi72az9sQQ== X-Google-Smtp-Source: AJdET5egfFAnERtI7eidg5Ymz93HVas1f5JGnfmKqRz6wtG2Q7F1mM64fAOEgsID4cBGXNgezeCBGw== X-Received: by 2002:a24:5393:: with SMTP id n141-v6mr2337170itb.158.1540501850205; Thu, 25 Oct 2018 14:10:50 -0700 (PDT) Received: from localhost.localdomain ([216.160.245.98]) by smtp.gmail.com with ESMTPSA id e65-v6sm3446375ioa.76.2018.10.25.14.10.48 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 25 Oct 2018 14:10:48 -0700 (PDT) From: Jens Axboe To: linux-block@vger.kernel.org, linux-scsi@vger.kernel.org, linux-ide@vger.kernel.org Cc: Jens Axboe Subject: [PATCH 03/28] mspro_block: convert to blk-mq Date: Thu, 25 Oct 2018 15:10:14 -0600 Message-Id: <20181025211039.11559-4-axboe@kernel.dk> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181025211039.11559-1-axboe@kernel.dk> References: <20181025211039.11559-1-axboe@kernel.dk> Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Straight forward conversion, there's room for improvement. Signed-off-by: Jens Axboe Reviewed-by: Hannes Reinecke --- drivers/memstick/core/mspro_block.c | 121 +++++++++++++++------------- 1 file changed, 66 insertions(+), 55 deletions(-) diff --git a/drivers/memstick/core/mspro_block.c b/drivers/memstick/core/mspro_block.c index 0cd30dcb6801..aba50ec98b4d 100644 --- a/drivers/memstick/core/mspro_block.c +++ b/drivers/memstick/core/mspro_block.c @@ -12,7 +12,7 @@ * */ -#include +#include #include #include #include @@ -142,6 +142,7 @@ struct mspro_block_data { struct gendisk *disk; struct request_queue *queue; struct request *block_req; + struct blk_mq_tag_set tag_set; spinlock_t q_lock; unsigned short page_size; @@ -152,7 +153,6 @@ struct mspro_block_data { unsigned char system; unsigned char read_only:1, eject:1, - has_request:1, data_dir:1, active:1; unsigned char transfer_cmd; @@ -694,13 +694,12 @@ static void h_mspro_block_setup_cmd(struct memstick_dev *card, u64 offset, /*** Data transfer ***/ -static int mspro_block_issue_req(struct memstick_dev *card, int chunk) +static int mspro_block_issue_req(struct memstick_dev *card, bool chunk) { struct mspro_block_data *msb = memstick_get_drvdata(card); u64 t_off; unsigned int count; -try_again: while (chunk) { msb->current_page = 0; msb->current_seg = 0; @@ -709,9 +708,17 @@ static int mspro_block_issue_req(struct memstick_dev *card, int chunk) msb->req_sg); if (!msb->seg_count) { - chunk = __blk_end_request_cur(msb->block_req, - BLK_STS_RESOURCE); - continue; + unsigned int bytes = blk_rq_cur_bytes(msb->block_req); + + chunk = blk_update_request(msb->block_req, + BLK_STS_RESOURCE, + bytes); + if (chunk) + continue; + __blk_mq_end_request(msb->block_req, + BLK_STS_RESOURCE); + msb->block_req = NULL; + break; } t_off = blk_rq_pos(msb->block_req); @@ -729,30 +736,22 @@ static int mspro_block_issue_req(struct memstick_dev *card, int chunk) return 0; } - dev_dbg(&card->dev, "blk_fetch\n"); - msb->block_req = blk_fetch_request(msb->queue); - if (!msb->block_req) { - dev_dbg(&card->dev, "issue end\n"); - return -EAGAIN; - } - - dev_dbg(&card->dev, "trying again\n"); - chunk = 1; - goto try_again; + return 1; } static int mspro_block_complete_req(struct memstick_dev *card, int error) { struct mspro_block_data *msb = memstick_get_drvdata(card); - int chunk, cnt; + int cnt; + bool chunk; unsigned int t_len = 0; unsigned long flags; spin_lock_irqsave(&msb->q_lock, flags); - dev_dbg(&card->dev, "complete %d, %d\n", msb->has_request ? 1 : 0, + dev_dbg(&card->dev, "complete %d, %d\n", msb->block_req ? 1 : 0, error); - if (msb->has_request) { + if (msb->block_req) { /* Nothing to do - not really an error */ if (error == -EAGAIN) error = 0; @@ -777,15 +776,17 @@ static int mspro_block_complete_req(struct memstick_dev *card, int error) if (error && !t_len) t_len = blk_rq_cur_bytes(msb->block_req); - chunk = __blk_end_request(msb->block_req, + chunk = blk_update_request(msb->block_req, errno_to_blk_status(error), t_len); - - error = mspro_block_issue_req(card, chunk); - - if (!error) - goto out; - else - msb->has_request = 0; + if (chunk) { + error = mspro_block_issue_req(card, chunk); + if (!error) + goto out; + } else { + __blk_mq_end_request(msb->block_req, + errno_to_blk_status(error)); + msb->block_req = NULL; + } } else { if (!error) error = -EAGAIN; @@ -806,8 +807,8 @@ static void mspro_block_stop(struct memstick_dev *card) while (1) { spin_lock_irqsave(&msb->q_lock, flags); - if (!msb->has_request) { - blk_stop_queue(msb->queue); + if (!msb->block_req) { + blk_mq_stop_hw_queues(msb->queue); rc = 1; } spin_unlock_irqrestore(&msb->q_lock, flags); @@ -822,32 +823,37 @@ static void mspro_block_stop(struct memstick_dev *card) static void mspro_block_start(struct memstick_dev *card) { struct mspro_block_data *msb = memstick_get_drvdata(card); - unsigned long flags; - spin_lock_irqsave(&msb->q_lock, flags); - blk_start_queue(msb->queue); - spin_unlock_irqrestore(&msb->q_lock, flags); + blk_mq_start_hw_queues(msb->queue); } -static void mspro_block_submit_req(struct request_queue *q) +static blk_status_t mspro_queue_rq(struct blk_mq_hw_ctx *hctx, + const struct blk_mq_queue_data *bd) { - struct memstick_dev *card = q->queuedata; + struct memstick_dev *card = hctx->queue->queuedata; struct mspro_block_data *msb = memstick_get_drvdata(card); - struct request *req = NULL; - if (msb->has_request) - return; + spin_lock_irq(&msb->q_lock); - if (msb->eject) { - while ((req = blk_fetch_request(q)) != NULL) - __blk_end_request_all(req, BLK_STS_IOERR); + if (msb->block_req) { + spin_unlock_irq(&msb->q_lock); + return BLK_STS_DEV_RESOURCE; + } - return; + if (msb->eject) { + spin_unlock_irq(&msb->q_lock); + blk_mq_start_request(bd->rq); + return BLK_STS_IOERR; } - msb->has_request = 1; - if (mspro_block_issue_req(card, 0)) - msb->has_request = 0; + msb->block_req = bd->rq; + blk_mq_start_request(bd->rq); + + if (mspro_block_issue_req(card, true)) + msb->block_req = NULL; + + spin_unlock_irq(&msb->q_lock); + return BLK_STS_OK; } /*** Initialization ***/ @@ -1167,6 +1173,10 @@ static int mspro_block_init_card(struct memstick_dev *card) } +static const struct blk_mq_ops mspro_mq_ops = { + .queue_rq = mspro_queue_rq, +}; + static int mspro_block_init_disk(struct memstick_dev *card) { struct mspro_block_data *msb = memstick_get_drvdata(card); @@ -1206,9 +1216,11 @@ static int mspro_block_init_disk(struct memstick_dev *card) goto out_release_id; } - msb->queue = blk_init_queue(mspro_block_submit_req, &msb->q_lock); - if (!msb->queue) { - rc = -ENOMEM; + msb->queue = blk_mq_init_sq_queue(&msb->tag_set, &mspro_mq_ops, 2, + BLK_MQ_F_SHOULD_MERGE); + if (IS_ERR(msb->queue)) { + rc = PTR_ERR(msb->queue); + msb->queue = NULL; goto out_put_disk; } @@ -1318,13 +1330,14 @@ static void mspro_block_remove(struct memstick_dev *card) spin_lock_irqsave(&msb->q_lock, flags); msb->eject = 1; - blk_start_queue(msb->queue); spin_unlock_irqrestore(&msb->q_lock, flags); + blk_mq_start_hw_queues(msb->queue); del_gendisk(msb->disk); dev_dbg(&card->dev, "mspro block remove\n"); blk_cleanup_queue(msb->queue); + blk_mq_free_tag_set(&msb->tag_set); msb->queue = NULL; sysfs_remove_group(&card->dev.kobj, &msb->attr_group); @@ -1344,8 +1357,9 @@ static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state) struct mspro_block_data *msb = memstick_get_drvdata(card); unsigned long flags; + blk_mq_stop_hw_queues(msb->queue); + spin_lock_irqsave(&msb->q_lock, flags); - blk_stop_queue(msb->queue); msb->active = 0; spin_unlock_irqrestore(&msb->q_lock, flags); @@ -1355,7 +1369,6 @@ static int mspro_block_suspend(struct memstick_dev *card, pm_message_t state) static int mspro_block_resume(struct memstick_dev *card) { struct mspro_block_data *msb = memstick_get_drvdata(card); - unsigned long flags; int rc = 0; #ifdef CONFIG_MEMSTICK_UNSAFE_RESUME @@ -1401,9 +1414,7 @@ static int mspro_block_resume(struct memstick_dev *card) #endif /* CONFIG_MEMSTICK_UNSAFE_RESUME */ - spin_lock_irqsave(&msb->q_lock, flags); - blk_start_queue(msb->queue); - spin_unlock_irqrestore(&msb->q_lock, flags); + blk_mq_start_hw_queues(msb->queue); return rc; }