kernel_optimize_test/drivers/mmc/core
Seungwon Jeon ce39f9d17c mmc: support packed write command for eMMC4.5 devices
This patch supports packed write command of eMMC4.5 devices.  Several
writes can be grouped in packed command and all data of the individual
commands can be sent in a single transfer on the bus. Large amounts of
data in one transfer rather than several data of small size are
effective for eMMC write internally.  As a result, packed command help
write throughput be improved.  The following tables show the results
of packed write.

Type A:
test     none |  packed
iozone   25.8 |  31
tiotest  27.6 |  31.2
lmdd     31.2 |  35.4

Type B:
test     none |  packed
iozone   44.1 |  51.1
tiotest  47.9 |  52.5
lmdd     51.6 |  59.2

Type C:
test     none |  packed
iozone   19.5 |  32
tiotest  19.9 |  34.5
lmdd     22.8 |  40.7

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Reviewed-by: Maya Erez <merez@codeaurora.org>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:37:16 -05:00
..
bus.c mmc: fix async request mechanism for sequential read scenarios 2013-02-11 13:28:49 -05:00
bus.h mmc: rename dev_to_mmc_card() to mmc_dev_to_card() 2010-10-23 21:11:12 +08:00
core.c mmc: use regulator_can_change_voltage() instead of regulator_count_voltages 2013-02-24 14:37:14 -05:00
core.h mmc: core: Break out start_signal_voltage_switch 2013-02-24 14:37:07 -05:00
debugfs.c mmc: core: debugfs: Add signal_voltage to ios dump 2012-12-06 13:54:36 -05:00
host.c workqueue: deprecate system_nrt[_freezable]_wq 2012-08-20 14:51:24 -07:00
host.h mmc: start removing enable / disable API 2012-03-27 12:20:03 -04:00
Kconfig mmc: Aggressive clock gating framework 2011-01-08 22:48:03 -05:00
Makefile mmc: extend and rename cd-gpio helpers to handle more slot GPIO functions 2012-07-10 23:04:04 -04:00
mmc_ops.c mmc: support packed write command for eMMC4.5 devices 2013-02-24 14:37:16 -05:00
mmc_ops.h mmc: core: support HPI send command 2011-10-26 16:32:29 -04:00
mmc.c mmc: add packed command feature of eMMC4.5 2013-02-24 14:37:15 -05:00
quirks.c mmc: Add export.h for EXPORT_SYMBOL/THIS_MODULE as required 2011-10-31 19:32:06 -04:00
sd_ops.c mmc: Add export.h for EXPORT_SYMBOL/THIS_MODULE as required 2011-10-31 19:32:06 -04:00
sd_ops.h mmc: add erase, secure erase, trim and secure trim operations 2010-08-12 08:43:30 -07:00
sd.c mmc: sdhci: enhance preset value function 2013-02-24 14:37:11 -05:00
sd.h mmc: sd: add support for driver type selection 2011-05-24 23:53:24 -04:00
sdio_bus.c mmc: Remove redundant null check before kfree in sdio_bus.c 2012-12-06 13:55:06 -05:00
sdio_bus.h mmc: basic SDIO device model 2007-09-23 19:45:31 +02:00
sdio_cis.c mmc: sdio: Change pr_warning to pr_warn_ratelimited 2012-07-22 15:25:48 -04:00
sdio_cis.h sdio: split up common and function CIS parsing 2007-09-23 20:44:22 +02:00
sdio_io.c mmc: sdio: Use multiple scatter/gather list 2012-12-06 13:54:43 -05:00
sdio_irq.c mmc: sdio: avoid spurious calls to interrupt handlers 2012-04-22 11:17:28 -04:00
sdio_ops.c mmc: sdio: Use multiple scatter/gather list 2012-12-06 13:54:43 -05:00
sdio_ops.h sdio: recognize io card without powercycle 2010-03-12 15:52:28 -08:00
sdio.c mmc: core: Fixup signal voltage switch 2013-02-24 14:37:08 -05:00
slot-gpio.c mmc: slot-gpio: use devm_* managed functions to ease users 2013-02-11 12:51:23 -05:00