From patchwork Sun Feb 19 10:43:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kemeng Shi X-Patchwork-Id: 13145769 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 24AF8C64ED6 for ; Sun, 19 Feb 2023 02:41:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229674AbjBSCld (ORCPT ); Sat, 18 Feb 2023 21:41:33 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42290 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229599AbjBSCl2 (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 9F95512863; Sat, 18 Feb 2023 18:41:27 -0800 (PST) Received: from mail02.huawei.com (unknown [172.30.67.143]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTP id 4PK8v70DGSz4f3pBv; Sun, 19 Feb 2023 10:41:23 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.124.27]) by APP2 (Coremail) with SMTP id Syh0CgBH7utQjPFjPmleDw--.7604S11; Sun, 19 Feb 2023 10:41:25 +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 09/17] block, bfq: stop to detect queue as waker queue if it already is now Date: Sun, 19 Feb 2023 18:43:01 +0800 Message-Id: <20230219104309.1511562-10-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--.7604S11 X-Coremail-Antispam: 1UD129KBjvdXoW7Xry5Ar18Gw13Cr1fJF4kXrb_yoWfXrbEya yFgr18Aan8Jay5Cr1YvryUtwnrua18Xw1kJFs8tFnrWFn8J3Z5C3sFqrW3AFs8WayxWFya yrsaq3Z8tr4IyjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbDAFF20E14v26rWj6s0DM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M280x2IEY4vEnII2IxkI6r1a6r45M28IrcIa0xkI8V A2jI8067AKxVWUAVCq3wA2048vs2IY020Ec7CjxVAFwI0_Xr0E3s1l8cAvFVAK0II2c7xJ M28CjxkF64kEwVA0rcxSw2x7M28EF7xvwVC0I7IYx2IY67AKxVW7JVWDJwA2z4x0Y4vE2I x0cI8IcVCY1x0267AKxVW8Jr0_Cr1UM28EF7xvwVC2z280aVAFwI0_GcCE3s1l84ACjcxK 6I8E87Iv6xkF7I0E14v26rxl6s0DM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4 xI64kE6c02F40Ex7xfMcIj6xIIjxv20xvE14v26r1j6r18McIj6I8E87Iv67AKxVWUJVW8 JwAm72CE4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20V AGYxC7MxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMI8I3I0E5I8CrVAF wI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVWUAVWUtwCIc4 0Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1I6r4UMIIF0xvE2Ix0cI8IcVCY1x0267AK xVWxJVW8Jr1lIxAIcVCF04k26cxKx2IYs7xG6r1j6r1xMIIF0xvEx4A2jsIE14v26r1j6r 4UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Gr0_Gr1UYxBIdaVFxhVjvjDU0xZFpf9x0pRvJPtU UUUU= X-CM-SenderInfo: 5vklyvpphqwq5kxd4v5lfo033gof0z/ X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org If last_completed_rq_bfqq is the current waker queue of bfqq, it's no meaning to execute the detection logic as nothing will change whether detection successes or fails. Signed-off-by: Kemeng Shi --- block/bfq-iosched.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c index 7a0283f08aed..0a11a381ee7d 100644 --- a/block/bfq-iosched.c +++ b/block/bfq-iosched.c @@ -2147,7 +2147,8 @@ static void bfq_check_waker(struct bfq_data *bfqd, struct bfq_queue *bfqq, bfq_bfqq_has_short_ttime(bfqq) || now_ns - bfqd->last_completion >= 4 * NSEC_PER_MSEC || bfqd->last_completed_rq_bfqq == &bfqd->oom_bfqq || - bfqq == &bfqd->oom_bfqq) + bfqq == &bfqd->oom_bfqq || + bfqd->last_completed_rq_bfqq == bfqq->waker_bfqq) return; /*