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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-12-15 14:52:16 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-12-15 14:52:16 -0300
commit8d91c1e411f55d7ea91b1183a2e9f8088fb4d5be (patch)
treee9891aa6c295060d065adffd610c4f49ecf884f3 /Documentation/fault-injection
parenta71852147516bc1cb5b0b3cbd13639bfd4022dc8 (diff)
Linux-libre 4.3.2-gnu
Diffstat (limited to 'Documentation/fault-injection')
-rw-r--r--Documentation/fault-injection/fault-injection.txt11
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/fault-injection/fault-injection.txt b/Documentation/fault-injection/fault-injection.txt
index 4cf1a2a6b..415484f3d 100644
--- a/Documentation/fault-injection/fault-injection.txt
+++ b/Documentation/fault-injection/fault-injection.txt
@@ -15,6 +15,10 @@ o fail_page_alloc
injects page allocation failures. (alloc_pages(), get_free_pages(), ...)
+o fail_futex
+
+ injects futex deadlock and uaddr fault errors.
+
o fail_make_request
injects disk IO errors on devices permitted by setting
@@ -113,6 +117,12 @@ configuration of fault-injection capabilities.
specifies the minimum page allocation order to be injected
failures.
+- /sys/kernel/debug/fail_futex/ignore-private:
+
+ Format: { 'Y' | 'N' }
+ default is 'N', setting it to 'Y' will disable failure injections
+ when dealing with private (address space) futexes.
+
o Boot option
In order to inject faults while debugfs is not available (early boot time),
@@ -121,6 +131,7 @@ use the boot option:
failslab=
fail_page_alloc=
fail_make_request=
+ fail_futex=
mmc_core.fail_request=<interval>,<probability>,<space>,<times>
How to add new fault injection capability