mmc: mmc_test: test to measure how sg_len affect performance

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Add a test that measures how the mmc bandwidth depends on the numbers of
sg elements in the sg list. The transfer size if fixed and sg length goes
from a few up to 512. The purpose is to measure overhead caused by
multiple sg elements.

Signed-off-by: Per Forlin <per.forlin@linaro.org>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Venkatraman S <svenkatr@ti.com>
Tested-by: Sourav Poddar <sourav.poddar@ti.com>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>

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Per Forlin 2011-07-01 18:55:27 +02:00 • committed by Chris Ball

parent 9f9c4180f8

commit bf04333036

1 changed files with 139 additions and 12 deletions

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drivers/mmc/card/mmc_test.c

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