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fault-inject: add documentation on MMC IO fault injection 

Add description on how to enable random fault injection
for MMC IO.

Signed-off-by: Per Forlin <per.forlin@linaro.org>
Acked-by: Akinobu Mita <akinobu.mita@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
hifive-unleashed-5.1
Per Forlin 2011-08-19 14:52:38 +02:00 committed by Chris Ball
parent 1b676f70c1
commit 1e4cb22bb5
1 changed files with 7 additions and 1 deletions
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8
Documentation/fault-injection/fault-injection.txt
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@ -21,6 +21,11 @@ o fail_make_request
/sys/block/<device>/make-it-fail or
/sys/block/<device>/<partition>/make-it-fail. (generic_make_request())
o fail_mmc_request
injects MMC data errors on devices permitted by setting
debugfs entries under /sys/kernel/debug/mmc0/fail_mmc_request
Configure fault-injection capabilities behavior
-----------------------------------------------
@ -115,7 +120,8 @@ use the boot option:
failslab=
fail_page_alloc=
fail_make_request=<interval>,<probability>,<space>,<times>
fail_make_request=
fail_mmc_request=<interval>,<probability>,<space>,<times>
How to add new fault injection capability
-----------------------------------------