From: Adrian Hunter <adrian.hunter@intel.com>
To: Ulf Hansson <ulf.hansson@linaro.org>
Cc: linux-mmc <linux-mmc@vger.kernel.org>,
linux-block <linux-block@vger.kernel.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
Bough Chen <haibo.chen@nxp.com>,
Alex Lemberg <alex.lemberg@sandisk.com>,
Mateusz Nowak <mateusz.nowak@intel.com>,
Yuliy Izrailov <Yuliy.Izrailov@sandisk.com>,
Jaehoon Chung <jh80.chung@samsung.com>,
Dong Aisheng <dongas86@gmail.com>,
Das Asutosh <asutoshd@codeaurora.org>,
Zhangfei Gao <zhangfei.gao@gmail.com>,
Sahitya Tummala <stummala@codeaurora.org>,
Harjani Ritesh <riteshh@codeaurora.org>,
Venu Byravarasu <vbyravarasu@nvidia.com>,
Linus Walleij <linus.walleij@linaro.org>,
Shawn Lin <shawn.lin@rock-chips.com>,
Christoph Hellwig <hch@lst.de>
Subject: [PATCH V12 1/5] mmc: core: Add parameter use_blk_mq
Date: Tue, 24 Oct 2017 11:40:24 +0300 [thread overview]
Message-ID: <1508834428-4360-2-git-send-email-adrian.hunter@intel.com> (raw)
In-Reply-To: <1508834428-4360-1-git-send-email-adrian.hunter@intel.com>
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 <adrian.hunter@intel.com>
---
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 1f0f44f4dd5f..5df03cb73be7 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 35a9e4fd1a9f..62ef6cb0ece4 100644
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -404,6 +404,8 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
host->fixed_drv_type = -EINVAL;
+ 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 e7743eca1021..ce2075d6f429 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -380,6 +380,7 @@ 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 */
--
1.9.1
next prev parent reply other threads:[~2017-10-24 8:47 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-24 8:40 [PATCH V12 0/5] mmc: Add Command Queue support Adrian Hunter
2017-10-24 8:40 ` Adrian Hunter [this message]
2017-10-24 8:40 ` [PATCH V12 2/5] mmc: block: Add blk-mq support Adrian Hunter
2017-10-27 9:23 ` Ulf Hansson
2017-10-27 11:54 ` Adrian Hunter
2017-10-27 13:44 ` Ulf Hansson
2017-10-24 8:40 ` [PATCH V12 3/5] mmc: block: Add CQE support Adrian Hunter
2017-10-24 8:40 ` [PATCH V12 4/5] mmc: cqhci: support for command queue enabled host Adrian Hunter
2017-10-24 8:40 ` [PATCH V12 5/5] mmc: sdhci-pci: Add CQHCI support for Intel GLK Adrian Hunter
2017-10-26 13:32 ` [PATCH V12 0/5] mmc: Add Command Queue support Linus Walleij
2017-10-26 13:49 ` Adrian Hunter
2017-10-26 14:25 ` Linus Walleij
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