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authorPer Forlin <per.forlin@linaro.org>2011-08-19 12:52:38 (GMT)
committerChris Ball <cjb@laptop.org>2011-10-26 19:43:34 (GMT)
commit1e4cb22bb5094def8eb5c3893f9dda2d517d29bb (patch)
tree95d567fd1176126e14971c0135e079b552307a1d /Documentation/fault-injection
parent1b676f70c108cda90cf9d114d16c677584400efc (diff)
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>
Diffstat (limited to 'Documentation/fault-injection')
-rw-r--r--Documentation/fault-injection/fault-injection.txt8
1 files changed, 7 insertions, 1 deletions
diff --git a/Documentation/fault-injection/fault-injection.txt b/Documentation/fault-injection/fault-injection.txt
index 82a5d25..70f924e 100644
--- a/Documentation/fault-injection/fault-injection.txt
+++ b/Documentation/fault-injection/fault-injection.txt
@@ -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
-----------------------------------------

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