From patchwork Fri Oct 13 11:12:16 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adrian Hunter X-Patchwork-Id: 10004259 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 7A36260216 for ; Fri, 13 Oct 2017 11:20:24 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6C3DC29035 for ; Fri, 13 Oct 2017 11:20:24 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5FA2C29039; Fri, 13 Oct 2017 11:20:24 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D45D92902F for ; Fri, 13 Oct 2017 11:20:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757976AbdJMLTW (ORCPT ); Fri, 13 Oct 2017 07:19:22 -0400 Received: from mga05.intel.com ([192.55.52.43]:11293 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757922AbdJMLTR (ORCPT ); Fri, 13 Oct 2017 07:19:17 -0400 Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga105.fm.intel.com with ESMTP; 13 Oct 2017 04:19:16 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.43,370,1503385200"; d="scan'208";a="146083263" Received: from ahunter-desktop.fi.intel.com ([10.237.72.168]) by orsmga002.jf.intel.com with ESMTP; 13 Oct 2017 04:19:11 -0700 From: Adrian Hunter To: Ulf Hansson Cc: linux-mmc , linux-block , linux-kernel , Bough Chen , Alex Lemberg , Mateusz Nowak , Yuliy Izrailov , Jaehoon Chung , Dong Aisheng , Das Asutosh , Zhangfei Gao , Sahitya Tummala , Harjani Ritesh , Venu Byravarasu , Linus Walleij , Shawn Lin , Christoph Hellwig Subject: [PATCH V11 1/4] mmc: core: Add parameter use_blk_mq Date: Fri, 13 Oct 2017 14:12:16 +0300 Message-Id: <1507893139-11969-2-git-send-email-adrian.hunter@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1507893139-11969-1-git-send-email-adrian.hunter@intel.com> References: <1507893139-11969-1-git-send-email-adrian.hunter@intel.com> Organization: Intel Finland Oy, Registered Address: PL 281, 00181 Helsinki, Business Identity Code: 0357606 - 4, Domiciled in Helsinki Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Until mmc has blk-mq support fully implemented and tested, add a parameter use_blk_mq, default to false unless config option MMC_MQ_DEFAULT is selected. Signed-off-by: Adrian Hunter --- drivers/mmc/Kconfig | 11 +++++++++++ drivers/mmc/core/core.c | 7 +++++++ drivers/mmc/core/core.h | 2 ++ drivers/mmc/core/host.c | 2 ++ drivers/mmc/core/host.h | 4 ++++ include/linux/mmc/host.h | 1 + 6 files changed, 27 insertions(+) diff --git a/drivers/mmc/Kconfig b/drivers/mmc/Kconfig index ec21388311db..98202934bd29 100644 --- a/drivers/mmc/Kconfig +++ b/drivers/mmc/Kconfig @@ -12,6 +12,17 @@ menuconfig MMC If you want MMC/SD/SDIO support, you should say Y here and also to your specific host controller driver. +config MMC_MQ_DEFAULT + bool "MMC: use blk-mq I/O path by default" + depends on MMC && BLOCK + ---help--- + This option enables the new blk-mq based I/O path for MMC block + devices by default. With the option the mmc_core.use_blk_mq + module/boot option defaults to Y, without it to N, but it can + still be overridden either way. + + If unsure say N. + if MMC source "drivers/mmc/core/Kconfig" diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 12b271c2a912..c287d297710a 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -66,6 +66,13 @@ bool use_spi_crc = 1; module_param(use_spi_crc, bool, 0); +#ifdef CONFIG_MMC_MQ_DEFAULT +bool mmc_use_blk_mq = true; +#else +bool mmc_use_blk_mq = false; +#endif +module_param_named(use_blk_mq, mmc_use_blk_mq, bool, S_IWUSR | S_IRUGO); + static int mmc_schedule_delayed_work(struct delayed_work *work, unsigned long delay) { diff --git a/drivers/mmc/core/core.h b/drivers/mmc/core/core.h index 71e6c6d7ceb7..8c5dd8d31400 100644 --- a/drivers/mmc/core/core.h +++ b/drivers/mmc/core/core.h @@ -35,6 +35,8 @@ struct mmc_bus_ops { int (*reset)(struct mmc_host *); }; +extern bool mmc_use_blk_mq; + void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops); void mmc_detach_bus(struct mmc_host *host); diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c index e58be39b1568..1539ce0da196 100644 --- a/drivers/mmc/core/host.c +++ b/drivers/mmc/core/host.c @@ -393,6 +393,8 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev) host->max_blk_size = 512; host->max_blk_count = PAGE_SIZE / 512; + host->use_blk_mq = mmc_use_blk_mq; + return host; } diff --git a/drivers/mmc/core/host.h b/drivers/mmc/core/host.h index fb689a1065ed..6eaf558e62d6 100644 --- a/drivers/mmc/core/host.h +++ b/drivers/mmc/core/host.h @@ -74,6 +74,10 @@ static inline bool mmc_card_hs400es(struct mmc_card *card) return card->host->ios.enhanced_strobe; } +static inline bool mmc_host_use_blk_mq(struct mmc_host *host) +{ + return host->use_blk_mq; +} #endif diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index c296f4351c1d..9109265fe529 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -378,6 +378,7 @@ struct mmc_host { unsigned int doing_retune:1; /* re-tuning in progress */ unsigned int retune_now:1; /* do re-tuning at next req */ unsigned int retune_paused:1; /* re-tuning is temporarily disabled */ + unsigned int use_blk_mq:1; /* use blk-mq */ int rescan_disable; /* disable card detection */ int rescan_entered; /* used with nonremovable devices */