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Commit c3d53d0d authored by Adrian Hunter's avatar Adrian Hunter Committed by Ulf Hansson
Browse files

mmc: core: Add parameter use_blk_mq 



Until mmc has blk-mq support fully implemented and tested, add a parameter
use_blk_mq, set to true if config option MMC_MQ_DEFAULT is selected, which
it is by default.

Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Acked-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
Tested-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 6d3898a6

drivers/mmc/Kconfig

+10 −0
Original line number Diff line number Diff line
@@ -12,6 +12,16 @@ 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

	default y

	---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 MMC



source "drivers/mmc/core/Kconfig"

drivers/mmc/core/core.c

+7 −0
Original line number Diff line number Diff line
@@ -66,6 +66,13 @@ static const unsigned freqs[] = { 400000, 300000, 200000, 100000 }; 
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)

{

drivers/mmc/core/core.h

+2 −0
Original line number Diff line number Diff line
@@ -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);

drivers/mmc/core/host.c

+2 −0
Original line number Diff line number Diff line
@@ -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;

}

drivers/mmc/core/host.h

+4 −0
Original line number Diff line number Diff line
@@ -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