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-rw-r--r--lib/Kconfig.debug24
1 files changed, 24 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 2034148..c2024d8 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -1119,6 +1119,30 @@ config CPU_NOTIFIER_ERROR_INJECT
If unsure, say N.
+config PM_NOTIFIER_ERROR_INJECT
+ tristate "PM notifier error injection module"
+ depends on PM && NOTIFIER_ERROR_INJECTION
+ default m if PM_DEBUG
+ help
+ This option provides the ability to inject artifical errors to
+ PM notifier chain callbacks. It is controlled through debugfs
+ interface /sys/kernel/debug/notifier-error-inject/pm
+
+ If the notifier call chain should be failed with some events
+ notified, write the error code to "actions/<notifier event>/error".
+
+ Example: Inject PM suspend error (-12 = -ENOMEM)
+
+ # cd /sys/kernel/debug/notifier-error-inject/pm/
+ # echo -12 > actions/PM_SUSPEND_PREPARE/error
+ # echo mem > /sys/power/state
+ bash: echo: write error: Cannot allocate memory
+
+ To compile this code as a module, choose M here: the module will
+ be called pm-notifier-error-inject.
+
+ If unsure, say N.
+
config FAULT_INJECTION
bool "Fault-injection framework"
depends on DEBUG_KERNEL
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