From patchwork Wed Nov 13 13:36:46 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Garry X-Patchwork-Id: 179303 Delivered-To: patch@linaro.org Received: by 2002:a92:38d5:0:0:0:0:0 with SMTP id g82csp9614861ilf; Wed, 13 Nov 2019 05:40:38 -0800 (PST) X-Google-Smtp-Source: APXvYqy3Kl26ME+GNXRkwdwlgtkryGoOPhVr3rbQzvkhCo4mLmCRqXNyPQZjfkfugAwQG9+ebvjW X-Received: by 2002:a17:906:351b:: with SMTP id r27mr2833419eja.120.1573652437895; Wed, 13 Nov 2019 05:40:37 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1573652437; cv=none; d=google.com; s=arc-20160816; b=CcVuQTEZ2ayYkPxPqBBetkJVYt7t3tL3UZMxZsniYrLlYKbe+wZMwKUeq5oivB/PL/ Iiorj+G0ejoPkt0xkEH/aqiX6CWM6G25HoYaiB+gsrHdOnt+9PUGVmWmlhSfwsjlpIAu OKpMbhbquQzJSW4YrfQ6C45+/8mF0GnKhgqyd/LNPmtwozq6+oUF53iAoNIo/sCcG311 Z9e6yLPeCJvYrim2EtzaJGPOdBzj83KHMywzOP3cCg5z5oHi/ftvLYLLDF3N+1KoWEsQ qofxtANvlxjwAspbl+lrDSQ/ocMV6cERn1Uf4PLbspKVmVoPmuPmgJNi78qWb2/qhqE8 zToQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from; bh=inEpGgkhRSD6P7Dx1iZBsHmTxcBJlDy/znHVmNZW54M=; b=asMfyhTsfZnIjZTQfbXfK9hHuEVo4LUKO246nnUULMcYkdnBI+bGkEik16iDM+F+1D SXgyb1aPyuUnHPiJgoRBDXkFczAq0lpFU3DeOLqszVLlf9IPnO2gZwLr+/P5KgWR/kLv 7C+rWINIJv5RHyLjRRiz7GBhp0B6rENWcolSj3W5zi0EiAlXvwxO4U/+HBDcnthzbG/0 9WqCGiSa5BHq+gt0qVrpMCkDO02LL/7Qr8eL5H6mtA6tNiPJCDar3XmXOB/NtMepFVKw Gk86s2KEoqirkcqv+cvjWakuUyW7hhw3Z5VNRy9QrzygeFODmn8fW/Gx/CaU698bfjFQ XdQQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id u3si1507545eda.271.2019.11.13.05.40.37; Wed, 13 Nov 2019 05:40:37 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727533AbfKMNke (ORCPT + 26 others); Wed, 13 Nov 2019 08:40:34 -0500 Received: from szxga07-in.huawei.com ([45.249.212.35]:40682 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726434AbfKMNkc (ORCPT ); Wed, 13 Nov 2019 08:40:32 -0500 Received: from DGGEMS404-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id 0CB095643DBEA9C9F29D; Wed, 13 Nov 2019 21:40:24 +0800 (CST) Received: from localhost.localdomain (10.69.192.58) by DGGEMS404-HUB.china.huawei.com (10.3.19.204) with Microsoft SMTP Server id 14.3.439.0; Wed, 13 Nov 2019 21:40:15 +0800 From: John Garry To: , , CC: , , , , , , , John Garry Subject: [PATCH RFC 2/5] blk-mq: rename BLK_MQ_F_TAG_SHARED as BLK_MQ_F_TAG_QUEUE_SHARED Date: Wed, 13 Nov 2019 21:36:46 +0800 Message-ID: <1573652209-163505-3-git-send-email-john.garry@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1573652209-163505-1-git-send-email-john.garry@huawei.com> References: <1573652209-163505-1-git-send-email-john.garry@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.69.192.58] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Ming Lei BLK_MQ_F_TAG_SHARED actually means that tags is shared among request queues, all of which should belong to LUNs attached to same HBA. So rename it to make the point explicitly. Suggested-by: Bart Van Assche Signed-off-by: Ming Lei Signed-off-by: John Garry --- block/blk-mq-debugfs.c | 2 +- block/blk-mq-tag.c | 2 +- block/blk-mq-tag.h | 4 ++-- block/blk-mq.c | 20 ++++++++++---------- include/linux/blk-mq.h | 2 +- 5 files changed, 15 insertions(+), 15 deletions(-) -- 2.17.1 Reviewed-by: Hannes Reinecke diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c index b3f2ba483992..33a40ae1d60f 100644 --- a/block/blk-mq-debugfs.c +++ b/block/blk-mq-debugfs.c @@ -236,7 +236,7 @@ static const char *const alloc_policy_name[] = { #define HCTX_FLAG_NAME(name) [ilog2(BLK_MQ_F_##name)] = #name static const char *const hctx_flag_name[] = { HCTX_FLAG_NAME(SHOULD_MERGE), - HCTX_FLAG_NAME(TAG_SHARED), + HCTX_FLAG_NAME(TAG_QUEUE_SHARED), HCTX_FLAG_NAME(BLOCKING), HCTX_FLAG_NAME(NO_SCHED), }; diff --git a/block/blk-mq-tag.c b/block/blk-mq-tag.c index 53b4a9414fbd..d7aa23c82dbf 100644 --- a/block/blk-mq-tag.c +++ b/block/blk-mq-tag.c @@ -73,7 +73,7 @@ static inline bool hctx_may_queue(struct blk_mq_hw_ctx *hctx, { unsigned int depth, users; - if (!hctx || !(hctx->flags & BLK_MQ_F_TAG_SHARED)) + if (!hctx || !(hctx->flags & BLK_MQ_F_TAG_QUEUE_SHARED)) return true; if (!test_bit(BLK_MQ_S_TAG_ACTIVE, &hctx->state)) return true; diff --git a/block/blk-mq-tag.h b/block/blk-mq-tag.h index b16f138e75f8..88b85daa4976 100644 --- a/block/blk-mq-tag.h +++ b/block/blk-mq-tag.h @@ -54,7 +54,7 @@ extern void __blk_mq_tag_idle(struct blk_mq_hw_ctx *); static inline bool blk_mq_tag_busy(struct blk_mq_hw_ctx *hctx) { - if (!(hctx->flags & BLK_MQ_F_TAG_SHARED)) + if (!(hctx->flags & BLK_MQ_F_TAG_QUEUE_SHARED)) return false; return __blk_mq_tag_busy(hctx); @@ -62,7 +62,7 @@ static inline bool blk_mq_tag_busy(struct blk_mq_hw_ctx *hctx) static inline void blk_mq_tag_idle(struct blk_mq_hw_ctx *hctx) { - if (!(hctx->flags & BLK_MQ_F_TAG_SHARED)) + if (!(hctx->flags & BLK_MQ_F_TAG_QUEUE_SHARED)) return; __blk_mq_tag_idle(hctx); diff --git a/block/blk-mq.c b/block/blk-mq.c index 16aa20d23b67..6b39cf0efdcd 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -302,7 +302,7 @@ static struct request *blk_mq_rq_ctx_init(struct blk_mq_alloc_data *data, rq->tag = -1; rq->internal_tag = tag; } else { - if (data->hctx->flags & BLK_MQ_F_TAG_SHARED) { + if (data->hctx->flags & BLK_MQ_F_TAG_QUEUE_SHARED) { rq_flags = RQF_MQ_INFLIGHT; atomic_inc(&data->hctx->nr_active); } @@ -1118,7 +1118,7 @@ static bool blk_mq_mark_tag_wait(struct blk_mq_hw_ctx *hctx, wait_queue_entry_t *wait; bool ret; - if (!(hctx->flags & BLK_MQ_F_TAG_SHARED)) { + if (!(hctx->flags & BLK_MQ_F_TAG_QUEUE_SHARED)) { blk_mq_sched_mark_restart_hctx(hctx); /* @@ -1249,7 +1249,7 @@ bool blk_mq_dispatch_rq_list(struct request_queue *q, struct list_head *list, * For non-shared tags, the RESTART check * will suffice. */ - if (hctx->flags & BLK_MQ_F_TAG_SHARED) + if (hctx->flags & BLK_MQ_F_TAG_QUEUE_SHARED) no_tag = true; break; } @@ -2358,7 +2358,7 @@ blk_mq_alloc_hctx(struct request_queue *q, struct blk_mq_tag_set *set, spin_lock_init(&hctx->lock); INIT_LIST_HEAD(&hctx->dispatch); hctx->queue = q; - hctx->flags = set->flags & ~BLK_MQ_F_TAG_SHARED; + hctx->flags = set->flags & ~BLK_MQ_F_TAG_QUEUE_SHARED; INIT_LIST_HEAD(&hctx->hctx_list); @@ -2575,9 +2575,9 @@ static void queue_set_hctx_shared(struct request_queue *q, bool shared) queue_for_each_hw_ctx(q, hctx, i) { if (shared) - hctx->flags |= BLK_MQ_F_TAG_SHARED; + hctx->flags |= BLK_MQ_F_TAG_QUEUE_SHARED; else - hctx->flags &= ~BLK_MQ_F_TAG_SHARED; + hctx->flags &= ~BLK_MQ_F_TAG_QUEUE_SHARED; } } @@ -2603,7 +2603,7 @@ static void blk_mq_del_queue_tag_set(struct request_queue *q) list_del_rcu(&q->tag_set_list); if (list_is_singular(&set->tag_list)) { /* just transitioned to unshared */ - set->flags &= ~BLK_MQ_F_TAG_SHARED; + set->flags &= ~BLK_MQ_F_TAG_QUEUE_SHARED; /* update existing queue */ blk_mq_update_tag_set_depth(set, false); } @@ -2620,12 +2620,12 @@ static void blk_mq_add_queue_tag_set(struct blk_mq_tag_set *set, * Check to see if we're transitioning to shared (from 1 to 2 queues). */ if (!list_empty(&set->tag_list) && - !(set->flags & BLK_MQ_F_TAG_SHARED)) { - set->flags |= BLK_MQ_F_TAG_SHARED; + !(set->flags & BLK_MQ_F_TAG_QUEUE_SHARED)) { + set->flags |= BLK_MQ_F_TAG_QUEUE_SHARED; /* update existing queue */ blk_mq_update_tag_set_depth(set, true); } - if (set->flags & BLK_MQ_F_TAG_SHARED) + if (set->flags & BLK_MQ_F_TAG_QUEUE_SHARED) queue_set_hctx_shared(q, true); list_add_tail_rcu(&q->tag_set_list, &set->tag_list); diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h index 0bf056de5cc3..147185394a25 100644 --- a/include/linux/blk-mq.h +++ b/include/linux/blk-mq.h @@ -225,7 +225,7 @@ struct blk_mq_ops { enum { BLK_MQ_F_SHOULD_MERGE = 1 << 0, - BLK_MQ_F_TAG_SHARED = 1 << 1, + BLK_MQ_F_TAG_QUEUE_SHARED = 1 << 1, BLK_MQ_F_BLOCKING = 1 << 5, BLK_MQ_F_NO_SCHED = 1 << 6, BLK_MQ_F_ALLOC_POLICY_START_BIT = 8,