From patchwork Wed Oct 26 07:30:42 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Loehle X-Patchwork-Id: 13020264 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 3B318C433FE for ; Wed, 26 Oct 2022 07:35:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233206AbiJZHft convert rfc822-to-8bit (ORCPT ); Wed, 26 Oct 2022 03:35:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52130 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233210AbiJZHfq (ORCPT ); Wed, 26 Oct 2022 03:35:46 -0400 Received: from mail3.swissbit.com (mail3.swissbit.com [176.95.1.57]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 46D785B73C for ; Wed, 26 Oct 2022 00:35:38 -0700 (PDT) Received: from mail3.swissbit.com (localhost [127.0.0.1]) by DDEI (Postfix) with ESMTP id 81D5746300B; Wed, 26 Oct 2022 09:30:43 +0200 (CEST) Received: from mail3.swissbit.com (localhost [127.0.0.1]) by DDEI (Postfix) with ESMTP id 6FF30462F57; Wed, 26 Oct 2022 09:30:43 +0200 (CEST) X-TM-AS-ERS: 10.149.2.42-127.5.254.253 X-TM-AS-SMTP: 1.0 ZXguc3dpc3NiaXQuY29t Y2xvZWhsZUBoeXBlcnN0b25lLmNvbQ== X-DDEI-TLS-USAGE: Used Received: from ex.swissbit.com (unknown [10.149.2.42]) by mail3.swissbit.com (Postfix) with ESMTPS; Wed, 26 Oct 2022 09:30:43 +0200 (CEST) Received: from sbdeex04.sbitdom.lan (10.149.2.42) by sbdeex04.sbitdom.lan (10.149.2.42) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.9; Wed, 26 Oct 2022 09:30:43 +0200 Received: from sbdeex04.sbitdom.lan ([fe80::2047:4968:b5a0:1818]) by sbdeex04.sbitdom.lan ([fe80::2047:4968:b5a0:1818%9]) with mapi id 15.02.1118.009; Wed, 26 Oct 2022 09:30:43 +0200 From: =?iso-8859-1?q?Christian_L=F6hle?= To: "axboe@kernel.dk" , "ulf.hansson@linaro.org" , "linux-mmc@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-block@vger.kernel.org" CC: Avri Altman , "adrian.hunter@intel.com" , "vincent.whitchurch@axis.com" , =?iso-8859-1?q?Christian_L=F6hle?= Subject: [PATCH 2/3] mmc: block: Limit queue size for consecutive requeues Thread-Topic: [PATCH 2/3] mmc: block: Limit queue size for consecutive requeues Thread-Index: AdjpDFCUhEcLNslaTyCpqjy/WRFg1Q== Date: Wed, 26 Oct 2022 07:30:42 +0000 Message-ID: <3dd3f33e5cc44657bcc2ebedc6d9dd2f@hyperstone.com> Accept-Language: en-US, de-DE Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.153.3.46] MIME-Version: 1.0 X-TMASE-Version: DDEI-5.1-9.0.1002-27224.006 X-TMASE-Result: 10--5.836500-10.000000 X-TMASE-MatchedRID: mIinBA9F1pwet1TxvngNgwzi9ePw0R3QajzNTFMlQCO+qOvnr0wlxY16 Nb+wd14Qbl983Sq5pJeLZQCmElUWARFCTluKaxHxTuctSpiuWyUUi4Ehat05499RlPzeVuQQghU rQpNGkuDi8zVgXoAltnS4vQrt84k3IAcCikR3vq/6y90BhXIDKmClRxG2GXwUzMjDTijVc9B9M7 imkCdZsOPwTp3D3CU0 X-TMASE-SNAP-Result: 1.821001.0001-0-1-22:0,33:0,34:0-0 X-TMASE-INERTIA: 0-0;;;; X-TMASE-XGENCLOUD: 0c6dfd2d-d8dd-4e82-a8ba-67a22aba986d-0-0-200-0 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org In case mmcblk relies on requeueing to fulfill block layer requests due to hardware or driver restricting the max_blk_count to 1 also limit the hardware queue size to 1 to get consecutive accesses instead of a round-robin on all queued reads. See SDHCI_QUIRK_NO_MULTIBLOCK for such a restriction. Signed-off-by: Christian Loehle --- drivers/mmc/core/queue.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/mmc/core/queue.c b/drivers/mmc/core/queue.c index fefaa901b50f..3a20f3933502 100644 --- a/drivers/mmc/core/queue.c +++ b/drivers/mmc/core/queue.c @@ -425,6 +425,8 @@ struct gendisk *mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card) if (host->cqe_enabled && !host->hsq_enabled) mq->tag_set.queue_depth = min_t(int, card->ext_csd.cmdq_depth, host->cqe_qdepth); + else if (host->max_blk_count == 1) + mq->tag_set.queue_depth = 1; else mq->tag_set.queue_depth = MMC_QUEUE_DEPTH; mq->tag_set.numa_node = NUMA_NO_NODE;