This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / Documentation / fault-injection / failmodule.sh

diff --git a/Documentation/fault-injection/failmodule.sh b/Documentation/fault-injection/failmodule.sh
new file mode 100644 (file)
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+++ b/Documentation/fault-injection/failmodule.sh
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+#!/bin/bash
+#
+# Usage: failmodule <failname> <modulename> [stacktrace-depth]
+#
+#      <failname>: "failslab", "fail_alloc_page", or "fail_make_request"
+#
+#      <modulename>: module name that you want to inject faults.
+#
+#      [stacktrace-depth]: the maximum number of stacktrace walking allowed
+#
+
+STACKTRACE_DEPTH=5
+if [ $# -gt 2 ]; then
+       STACKTRACE_DEPTH=$3
+fi
+
+if [ ! -d /debug/$1 ]; then
+       echo "Fault-injection $1 does not exist" >&2
+       exit 1
+fi
+if [ ! -d /sys/module/$2 ]; then
+       echo "Module $2 does not exist" >&2
+       exit 1
+fi
+
+# Disable any fault injection
+echo 0 > /debug/$1/stacktrace-depth
+
+echo `cat /sys/module/$2/sections/.text` > /debug/$1/require-start
+echo `cat /sys/module/$2/sections/.exit.text` > /debug/$1/require-end
+echo $STACKTRACE_DEPTH > /debug/$1/stacktrace-depth