From patchwork Fri Aug 6 11:18:56 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Damien Le Moal X-Patchwork-Id: 12423261 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 556FAC432BE for ; Fri, 6 Aug 2021 11:19:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 35ECB611B0 for ; Fri, 6 Aug 2021 11:19:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242720AbhHFLTY (ORCPT ); Fri, 6 Aug 2021 07:19:24 -0400 Received: from esa3.hgst.iphmx.com ([216.71.153.141]:39963 "EHLO esa3.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245410AbhHFLTS (ORCPT ); Fri, 6 Aug 2021 07:19:18 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1628248742; x=1659784742; h=from:to:subject:date:message-id:in-reply-to:references: mime-version:content-transfer-encoding; bh=hDDi7vXfsrDlHCkMc281gJJnA9RDGTzvWYwvp67gk0g=; b=i3U1xG1WVK0qOolqT/g2gJMET2HdtHJ9v2BtFjOOa1Nipfd4vlmMlwA/ ImkvbdIphznUDMN9zsIeoNeY115UCOTlyF7FH2y8c3wed6LqXs7xoQzri U3Hcfgdze3CZjfSx6E7SggSswvU58GyCKpGBzKboDs+YkED3eTuaMyXvG FIhw7kKFYXjesDB1NaygZ9V6anO2xp65J2TviSykABdiKw8pc2ywZWyjf gwfigRvLMLlosAXCOBOtjd2HolXwd1FJifjHw9y52Ez2ffs4OkWWfJdQx omflq7aAM24EQZiK5yyW1GOKLq5sGUb6fKD7Y2MmoPs8haOnCbikqA4yq g==; X-IronPort-AV: E=Sophos;i="5.84,300,1620662400"; d="scan'208";a="181309766" Received: from h199-255-45-15.hgst.com (HELO uls-op-cesaep02.wdc.com) ([199.255.45.15]) by ob1.hgst.iphmx.com with ESMTP; 06 Aug 2021 19:19:02 +0800 IronPort-SDR: 3KY3QzK+3Teiua3hJKpmaThU3UGxso2cYpsYADIZvJZrFeSNuMXh7UKtzNlXiKbb1qGJG/bWlB 7aM9fyyXNrrRa8Yhr9M/in0qmUqgo7crHhP7sZTRXBQXDbMRGYjPLnhgfCtHgVcTY6z5R4PLNB vu80/7iEFY5/XhMMcCYUXhF55wx0RWDCLJZMbeCDSvnohJZrCZO8di/Ysds+n/8HkqLOMzMYbN snLbBg57+ok8SuMqUL//Qge/B0HVSE/+tAvcV0vHLFVj3NHAtqI2mDtmnDAA7os2xrYWhT4YuW KUnazDB6iGmslDqRjayV5EEA Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep02.wdc.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Aug 2021 03:54:39 -0700 IronPort-SDR: 2K3V6hxI0acVop5thmOZuQTW7omntvz7SUcp3sKWpFCgqFHrCn3WxD73ccSiewenY1xcJues6h GZpUYKyl84WsBr0jfUJRKdTCkXlnjLzuetvKyHB53kP4mWIpfBt1JqY+jSIBdApNX0cr46KWdc wLavhIGyc/PE57WXf6mdMaXTRiPBzkoXjQiCMg88UylNYrAQ2FzYKEuN24HAdKxKSUWVnVvqA6 e7Low8nSJ0d8x4Er3ouWkMKPsLzVTi3d4Q/wMq2FqrU6m7DLEjigNrjObvXncka8QDfTQKwK/p g84= WDCIronportException: Internal Received: from washi.fujisawa.hgst.com ([10.149.53.254]) by uls-op-cesaip02.wdc.com with ESMTP; 06 Aug 2021 04:19:03 -0700 From: Damien Le Moal To: Jens Axboe , linux-block@vger.kernel.org, Paolo Valente , linux-f2fs-devel@lists.sourceforge.net, Jaegeuk Kim , Chao Yu Subject: [PATCH v3 3/4] block: rename IOPRIO_BE_NR Date: Fri, 6 Aug 2021 20:18:56 +0900 Message-Id: <20210806111857.488705-4-damien.lemoal@wdc.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210806111857.488705-1-damien.lemoal@wdc.com> References: <20210806111857.488705-1-damien.lemoal@wdc.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org The BFQ scheduler and ioprio_check_cap() both assume that the RT priority class (IOPRIO_CLASS_RT) can have up to 8 different priority levels. This is controlled using the macro IOPRIO_BE_NR, which is badly named as the number of levels also applies to the RT class. Rename IOPRIO_BE_NR to the class independent IOPRIO_NR_LEVELS to make things clear. Signed-off-by: Damien Le Moal Reviewed-by: Hannes Reinecke --- block/bfq-iosched.c | 8 ++++---- block/bfq-iosched.h | 4 ++-- block/bfq-wf2q.c | 6 +++--- block/ioprio.c | 3 +-- fs/f2fs/sysfs.c | 2 +- include/uapi/linux/ioprio.h | 4 ++-- 6 files changed, 13 insertions(+), 14 deletions(-) diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c index 1f38d75524ae..d5824cab34d7 100644 --- a/block/bfq-iosched.c +++ b/block/bfq-iosched.c @@ -2505,7 +2505,7 @@ void bfq_end_wr_async_queues(struct bfq_data *bfqd, int i, j; for (i = 0; i < 2; i++) - for (j = 0; j < IOPRIO_BE_NR; j++) + for (j = 0; j < IOPRIO_NR_LEVELS; j++) if (bfqg->async_bfqq[i][j]) bfq_bfqq_end_wr(bfqg->async_bfqq[i][j]); if (bfqg->async_idle_bfqq) @@ -5290,10 +5290,10 @@ bfq_set_next_ioprio_data(struct bfq_queue *bfqq, struct bfq_io_cq *bic) break; } - if (bfqq->new_ioprio >= IOPRIO_BE_NR) { + if (bfqq->new_ioprio >= IOPRIO_NR_LEVELS) { pr_crit("bfq_set_next_ioprio_data: new_ioprio %d\n", bfqq->new_ioprio); - bfqq->new_ioprio = IOPRIO_BE_NR - 1; + bfqq->new_ioprio = IOPRIO_NR_LEVELS - 1; } bfqq->entity.new_weight = bfq_ioprio_to_weight(bfqq->new_ioprio); @@ -6822,7 +6822,7 @@ void bfq_put_async_queues(struct bfq_data *bfqd, struct bfq_group *bfqg) int i, j; for (i = 0; i < 2; i++) - for (j = 0; j < IOPRIO_BE_NR; j++) + for (j = 0; j < IOPRIO_NR_LEVELS; j++) __bfq_put_async_bfqq(bfqd, &bfqg->async_bfqq[i][j]); __bfq_put_async_bfqq(bfqd, &bfqg->async_idle_bfqq); diff --git a/block/bfq-iosched.h b/block/bfq-iosched.h index 99c2a3cb081e..385e28a843d1 100644 --- a/block/bfq-iosched.h +++ b/block/bfq-iosched.h @@ -931,7 +931,7 @@ struct bfq_group { void *bfqd; - struct bfq_queue *async_bfqq[2][IOPRIO_BE_NR]; + struct bfq_queue *async_bfqq[2][IOPRIO_NR_LEVELS]; struct bfq_queue *async_idle_bfqq; struct bfq_entity *my_entity; @@ -948,7 +948,7 @@ struct bfq_group { struct bfq_entity entity; struct bfq_sched_data sched_data; - struct bfq_queue *async_bfqq[2][IOPRIO_BE_NR]; + struct bfq_queue *async_bfqq[2][IOPRIO_NR_LEVELS]; struct bfq_queue *async_idle_bfqq; struct rb_root rq_pos_tree; diff --git a/block/bfq-wf2q.c b/block/bfq-wf2q.c index 7a462df71f68..b74cc0da118e 100644 --- a/block/bfq-wf2q.c +++ b/block/bfq-wf2q.c @@ -505,7 +505,7 @@ static void bfq_active_insert(struct bfq_service_tree *st, */ unsigned short bfq_ioprio_to_weight(int ioprio) { - return (IOPRIO_BE_NR - ioprio) * BFQ_WEIGHT_CONVERSION_COEFF; + return (IOPRIO_NR_LEVELS - ioprio) * BFQ_WEIGHT_CONVERSION_COEFF; } /** @@ -514,12 +514,12 @@ unsigned short bfq_ioprio_to_weight(int ioprio) * * To preserve as much as possible the old only-ioprio user interface, * 0 is used as an escape ioprio value for weights (numerically) equal or - * larger than IOPRIO_BE_NR * BFQ_WEIGHT_CONVERSION_COEFF. + * larger than IOPRIO_NR_LEVELS * BFQ_WEIGHT_CONVERSION_COEFF. */ static unsigned short bfq_weight_to_ioprio(int weight) { return max_t(int, 0, - IOPRIO_BE_NR * BFQ_WEIGHT_CONVERSION_COEFF - weight); + IOPRIO_NR_LEVELS * BFQ_WEIGHT_CONVERSION_COEFF - weight); } static void bfq_get_entity(struct bfq_entity *entity) diff --git a/block/ioprio.c b/block/ioprio.c index bee628f9f1b2..ca6b136c5586 100644 --- a/block/ioprio.c +++ b/block/ioprio.c @@ -74,9 +74,8 @@ int ioprio_check_cap(int ioprio) fallthrough; /* rt has prio field too */ case IOPRIO_CLASS_BE: - if (data >= IOPRIO_BE_NR || data < 0) + if (data >= IOPRIO_NR_LEVELS || data < 0) return -EINVAL; - break; case IOPRIO_CLASS_IDLE: break; diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c index 6642246206bd..daad532a4e2b 100644 --- a/fs/f2fs/sysfs.c +++ b/fs/f2fs/sysfs.c @@ -378,7 +378,7 @@ static ssize_t __sbi_store(struct f2fs_attr *a, ret = kstrtol(name, 10, &data); if (ret) return ret; - if (data >= IOPRIO_BE_NR || data < 0) + if (data >= IOPRIO_NR_LEVELS || data < 0) return -EINVAL; cprc->ckpt_thread_ioprio = IOPRIO_PRIO_VALUE(class, data); diff --git a/include/uapi/linux/ioprio.h b/include/uapi/linux/ioprio.h index abc40965aa96..99d37d4807b8 100644 --- a/include/uapi/linux/ioprio.h +++ b/include/uapi/linux/ioprio.h @@ -31,9 +31,9 @@ enum { }; /* - * 8 best effort priority levels are supported + * The RT and BE priority classes both support up to 8 priority levels. */ -#define IOPRIO_BE_NR 8 +#define IOPRIO_NR_LEVELS 8 enum { IOPRIO_WHO_PROCESS = 1,