From patchwork Sun Feb 19 10:42:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kemeng Shi X-Patchwork-Id: 13145761 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 D2D42C64ED8 for ; Sun, 19 Feb 2023 02:41:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229651AbjBSCla (ORCPT ); Sat, 18 Feb 2023 21:41:30 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42284 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229586AbjBSCl2 (ORCPT ); Sat, 18 Feb 2023 21:41:28 -0500 Received: from dggsgout11.his.huawei.com (dggsgout11.his.huawei.com [45.249.212.51]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BA67112051; Sat, 18 Feb 2023 18:41:26 -0800 (PST) Received: from mail02.huawei.com (unknown [172.30.67.143]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTP id 4PK8v60GP2z4f3pBy; Sun, 19 Feb 2023 10:41:22 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.124.27]) by APP2 (Coremail) with SMTP id Syh0CgBH7utQjPFjPmleDw--.7604S8; Sun, 19 Feb 2023 10:41:24 +0800 (CST) From: Kemeng Shi To: paolo.valente@linaro.org, axboe@kernel.dk, jack@suse.cz Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, shikemeng@huaweicloud.com Subject: [PATCH 06/17] block, bfq: correct bfq_max_budget and bfq_min_budget Date: Sun, 19 Feb 2023 18:42:58 +0800 Message-Id: <20230219104309.1511562-7-shikemeng@huaweicloud.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20230219104309.1511562-1-shikemeng@huaweicloud.com> References: <20230219104309.1511562-1-shikemeng@huaweicloud.com> MIME-Version: 1.0 X-CM-TRANSID: Syh0CgBH7utQjPFjPmleDw--.7604S8 X-Coremail-Antispam: 1UD129KBjvJXoW7Jry5Zw15WF1UWrW3tr47Jwb_yoW8JrW5pa 4qqw10gF17JrZxXrs7K3WUX3W5twsxZF4kKr1YqrWjyF4IyF1ayF18Zw18X3WfKrWIyry5 X3sru34DXa12kaDanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUPY14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2jI8I6cxK62vIxIIY0VWUZVW8XwA2048vs2IY02 0E87I2jVAFwI0_JF0E3s1l82xGYIkIc2x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0 rwA2F7IY1VAKz4vEj48ve4kI8wA2z4x0Y4vE2Ix0cI8IcVAFwI0_Ar0_tr1l84ACjcxK6x IIjxv20xvEc7CjxVAFwI0_Gr1j6F4UJwA2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xv wVC2z280aVCY1x0267AKxVW0oVCq3wAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFc xC0VAKzVAqx4xG6I80ewAv7VC0I7IYx2IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_ Gr1lOx8S6xCaFVCjc4AY6r1j6r4UM4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2 IErcIFxwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E 14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_JF0_Jw1lIx kGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUCVW8JwCI42IY6xIIjxv20xvEc7CjxVAF wI0_Gr0_Cr1lIxAIcVCF04k26cxKx2IYs7xG6r1j6r1xMIIF0xvEx4A2jsIE14v26r1j6r 4UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Gr0_Gr1UYxBIdaVFxhVjvjDU0xZFpf9x0pRvJPtU UUUU= X-CM-SenderInfo: 5vklyvpphqwq5kxd4v5lfo033gof0z/ X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org For case that user set a max_budget, we should use bfq_max_budget set by user instead of bfq_default_max_budget when budgets_assigned is not enough to compulte auto-tuning max_budget. Signed-off-by: Kemeng Shi --- block/bfq-iosched.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c index 5b08711cbaf6..b32bae5259d5 100644 --- a/block/bfq-iosched.c +++ b/block/bfq-iosched.c @@ -1458,7 +1458,8 @@ static int bfq_bfqq_budget_left(struct bfq_queue *bfqq) */ static int bfq_max_budget(struct bfq_data *bfqd) { - if (bfqd->budgets_assigned < bfq_stats_min_budgets) + if (bfqd->budgets_assigned < bfq_stats_min_budgets && + bfqd->bfq_user_max_budget == 0) return bfq_default_max_budget; else return bfqd->bfq_max_budget; @@ -1470,7 +1471,8 @@ static int bfq_max_budget(struct bfq_data *bfqd) */ static int bfq_min_budget(struct bfq_data *bfqd) { - if (bfqd->budgets_assigned < bfq_stats_min_budgets) + if (bfqd->budgets_assigned < bfq_stats_min_budgets && + bfqd->bfq_user_max_budget == 0) return bfq_default_max_budget / 32; else return bfqd->bfq_max_budget / 32;