From patchwork Tue Aug 29 02:04:51 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wenchao Chen X-Patchwork-Id: 718907 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 C5866C83F1C for ; Tue, 29 Aug 2023 02:06:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235148AbjH2CGW (ORCPT ); Mon, 28 Aug 2023 22:06:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48264 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235252AbjH2CGK (ORCPT ); Mon, 28 Aug 2023 22:06:10 -0400 Received: from SHSQR01.spreadtrum.com (unknown [222.66.158.135]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D0AA619F; Mon, 28 Aug 2023 19:06:01 -0700 (PDT) Received: from dlp.unisoc.com ([10.29.3.86]) by SHSQR01.spreadtrum.com with ESMTP id 37T25baR053279; Tue, 29 Aug 2023 10:05:37 +0800 (+08) (envelope-from Wenchao.Chen@unisoc.com) Received: from SHDLP.spreadtrum.com (shmbx05.spreadtrum.com [10.29.1.56]) by dlp.unisoc.com (SkyGuard) with ESMTPS id 4RZW0k4sBPz2QZR4F; Tue, 29 Aug 2023 10:03:02 +0800 (CST) Received: from xm9614pcu.spreadtrum.com (10.13.2.29) by shmbx05.spreadtrum.com (10.29.1.56) with Microsoft SMTP Server (TLS) id 15.0.1497.23; Tue, 29 Aug 2023 10:05:36 +0800 From: Wenchao Chen To: CC: , , , , , Wenchao Chen Subject: [PATCH V3 2/2] mmc: hsq: dynamic adjustment of hsq->depth Date: Tue, 29 Aug 2023 10:04:51 +0800 Message-ID: <20230829020451.9828-3-wenchao.chen@unisoc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230829020451.9828-1-wenchao.chen@unisoc.com> References: <20230829020451.9828-1-wenchao.chen@unisoc.com> MIME-Version: 1.0 X-Originating-IP: [10.13.2.29] X-ClientProxiedBy: SHCAS03.spreadtrum.com (10.0.1.207) To shmbx05.spreadtrum.com (10.29.1.56) X-MAIL: SHSQR01.spreadtrum.com 37T25baR053279 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org Increasing hsq_depth improves random write performance. Signed-off-by: Wenchao Chen --- drivers/mmc/host/mmc_hsq.c | 27 +++++++++++++++++++++++++++ drivers/mmc/host/mmc_hsq.h | 5 +++++ 2 files changed, 32 insertions(+) diff --git a/drivers/mmc/host/mmc_hsq.c b/drivers/mmc/host/mmc_hsq.c index 8556cacb21a1..0984c39108ba 100644 --- a/drivers/mmc/host/mmc_hsq.c +++ b/drivers/mmc/host/mmc_hsq.c @@ -21,6 +21,31 @@ static void mmc_hsq_retry_handler(struct work_struct *work) mmc->ops->request(mmc, hsq->mrq); } +static void mmc_hsq_modify_threshold(struct mmc_hsq *hsq) +{ + struct mmc_host *mmc = hsq->mmc; + struct mmc_request *mrq; + struct hsq_slot *slot; + int need_change = 0; + int tag; + + for (tag = 0; tag < HSQ_NUM_SLOTS; tag++) { + slot = &hsq->slot[tag]; + mrq = slot->mrq; + if (mrq && mrq->data && + (mrq->data->blksz * mrq->data->blocks == 4096) && + (mrq->data->flags & MMC_DATA_WRITE)) + need_change++; + else + break; + } + + if (need_change > 1) + mmc->hsq_depth = HSQ_PERFORMANCE_DEPTH; + else + mmc->hsq_depth = HSQ_NORMAL_DEPTH; +} + static void mmc_hsq_pump_requests(struct mmc_hsq *hsq) { struct mmc_host *mmc = hsq->mmc; @@ -42,6 +67,8 @@ static void mmc_hsq_pump_requests(struct mmc_hsq *hsq) return; } + mmc_hsq_modify_threshold(hsq); + slot = &hsq->slot[hsq->next_tag]; hsq->mrq = slot->mrq; hsq->qcnt--; diff --git a/drivers/mmc/host/mmc_hsq.h b/drivers/mmc/host/mmc_hsq.h index aa5c4543b55f..dd352a6ac32a 100644 --- a/drivers/mmc/host/mmc_hsq.h +++ b/drivers/mmc/host/mmc_hsq.h @@ -10,6 +10,11 @@ * flight to avoid a long latency. */ #define HSQ_NORMAL_DEPTH 2 +/* + * For 4k random writes, we allow hsq_depth to increase to 5 + * for better performance. + */ +#define HSQ_PERFORMANCE_DEPTH 5 struct hsq_slot { struct mmc_request *mrq;