From patchwork Fri Sep 30 03:19:03 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yu Kuai X-Patchwork-Id: 12994853 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 B499FC43219 for ; Fri, 30 Sep 2022 02:57:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229896AbiI3C5M (ORCPT ); Thu, 29 Sep 2022 22:57:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45586 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229630AbiI3C5K (ORCPT ); Thu, 29 Sep 2022 22:57:10 -0400 Received: from dggsgout11.his.huawei.com (unknown [45.249.212.51]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D8309104626; Thu, 29 Sep 2022 19:57:07 -0700 (PDT) Received: from mail02.huawei.com (unknown [172.30.67.143]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTP id 4Mdvwk5v3vzl9yH; Fri, 30 Sep 2022 10:55:18 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.127.227]) by APP2 (Coremail) with SMTP id Syh0CgAnenP_WjZjTFJvBg--.12213S7; Fri, 30 Sep 2022 10:57:06 +0800 (CST) From: Yu Kuai To: jack@suse.cz, hch@infradead.org, ebiggers@kernel.org, paolo.valente@linaro.org, axboe@kernel.dk Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, yukuai3@huawei.com, yukuai1@huaweicloud.com, yi.zhang@huawei.com Subject: [PATCH v4 3/6] blk-wbt: make enable_state more accurate Date: Fri, 30 Sep 2022 11:19:03 +0800 Message-Id: <20220930031906.4164306-4-yukuai1@huaweicloud.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20220930031906.4164306-1-yukuai1@huaweicloud.com> References: <20220930031906.4164306-1-yukuai1@huaweicloud.com> MIME-Version: 1.0 X-CM-TRANSID: Syh0CgAnenP_WjZjTFJvBg--.12213S7 X-Coremail-Antispam: 1UD129KBjvJXoW7ZF47CF4Utw47WFyfCFyfWFg_yoW8ArW5pa srGrW7KrnFgFn7Zw4xA3W7JrWfCa1UtF45Gay5Zr1rWF15ur42v3WvkrWUXFnYvFW3CF4I g3yDJr9rJa4UurDanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUBE14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_JrWl82xGYIkIc2 x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2z4x0 Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F4UJw A2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oVCq3wAS 0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7IYx2 IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4UM4x0 Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwACI402YVCY1x02628vn2kIc2 xKxwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14v2 6r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_Jw0_GFylIxkGc2 Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUJVWUCwCI42IY6xIIjxv20xvEc7CjxVAFwI0_ Gr0_Cr1lIxAIcVCF04k26cxKx2IYs7xG6r1j6r1xMIIF0xvEx4A2jsIE14v26r1j6r4UMI IF0xvEx4A2jsIEc7CjxVAFwI0_Gr0_Gr1UYxBIdaVFxhVjvjDU0xZFpf9x0JUd8n5UUUUU = X-CM-SenderInfo: 51xn3trlr6x35dzhxuhorxvhhfrp/ X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org From: Yu Kuai Currently, if user disable wbt through sysfs, 'enable_state' will be 'WBT_STATE_ON_MANUAL', which will be confusing. Add a new state 'WBT_STATE_OFF_MANUAL' to cover that case. Signed-off-by: Yu Kuai Reviewed-by: Christoph Hellwig --- block/blk-wbt.c | 7 ++++++- block/blk-wbt.h | 12 +++++++----- 2 files changed, 13 insertions(+), 6 deletions(-) diff --git a/block/blk-wbt.c b/block/blk-wbt.c index 4ed60dbd0756..9cac54569ff1 100644 --- a/block/blk-wbt.c +++ b/block/blk-wbt.c @@ -435,8 +435,13 @@ void wbt_set_min_lat(struct request_queue *q, u64 val) struct rq_qos *rqos = wbt_rq_qos(q); if (!rqos) return; + RQWB(rqos)->min_lat_nsec = val; - RQWB(rqos)->enable_state = WBT_STATE_ON_MANUAL; + if (val) + RQWB(rqos)->enable_state = WBT_STATE_ON_MANUAL; + else + RQWB(rqos)->enable_state = WBT_STATE_OFF_MANUAL; + wbt_update_limits(RQWB(rqos)); } diff --git a/block/blk-wbt.h b/block/blk-wbt.h index 7e44eccc676d..7fe98638fff5 100644 --- a/block/blk-wbt.h +++ b/block/blk-wbt.h @@ -28,13 +28,15 @@ enum { }; /* - * Enable states. Either off, or on by default (done at init time), - * or on through manual setup in sysfs. + * If current state is WBT_STATE_ON/OFF_DEFAULT, it can be covered to any other + * state, if current state is WBT_STATE_ON/OFF_MANUAL, it can only be covered + * to WBT_STATE_OFF/ON_MANUAL. */ enum { - WBT_STATE_ON_DEFAULT = 1, - WBT_STATE_ON_MANUAL = 2, - WBT_STATE_OFF_DEFAULT + WBT_STATE_ON_DEFAULT = 1, /* on by default */ + WBT_STATE_ON_MANUAL = 2, /* on manually by sysfs */ + WBT_STATE_OFF_DEFAULT = 3, /* off by default */ + WBT_STATE_OFF_MANUAL = 4, /* off manually by sysfs */ }; struct rq_wb {