From 1e4cb22bb5094def8eb5c3893f9dda2d517d29bb Mon Sep 17 00:00:00 2001 From: Per Forlin <per.forlin@linaro.org> Date: Fri, 19 Aug 2011 14:52:38 +0200 Subject: [PATCH] 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> --- Documentation/fault-injection/fault-injection.txt | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/Documentation/fault-injection/fault-injection.txt b/Documentation/fault-injection/fault-injection.txt index 82a5d250d75e7..70f924ec1e587 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 ----------------------------------------- -- GitLab