This patch contains two test scripts for module load/unload race testing.
Follow the following steps to use this test suite:
1. Run several instances invoking endless_cat.sh to access the sysfs files
that exported by the module.
2. Run endless_mod.sh to load/unload the module frequently to see if races
will happen.
Signed-off-by: Lv Zheng <lv.zheng@xxxxxxxxx>
---
tools/testing/module-unloading/endless_cat.sh | 32 ++++++++++
tools/testing/module-unloading/endless_mod.sh | 81 +++++++++++++++++++++++++
2 files changed, 113 insertions(+)
create mode 100755 tools/testing/module-unloading/endless_cat.sh
create mode 100755 tools/testing/module-unloading/endless_mod.sh
diff --git a/tools/testing/module-unloading/endless_cat.sh b/tools/testing/module-unloading/endless_cat.sh
new file mode 100755
index 0000000..72e035c
--- /dev/null
+++ b/tools/testing/module-unloading/endless_cat.sh
@@ -0,0 +1,32 @@
+#!/bin/sh
+
+fatal() {
+ echo $1
+ exit 1
+}
+
+usage() {
+ echo "Usage: `basename $0` <file>"
+ echo "Where:"
+ echo " file: file to cat"
+}
+
+fatal_usage() {
+ usage
+ exit 1
+}
+
+if [ "x$1" = "x" ]; then
+ echo "Missing <file> paraemter."
+ fatal_usage
+fi
+if [ ! -f $1 ]; then
+ echo "$1 is not an accessible file."
+ fatal_usage
+fi
+
+while :
+do
+ cat $1
+ echo "-----------------------------------"
+done
diff --git a/tools/testing/module-unloading/endless_mod.sh b/tools/testing/module-unloading/endless_mod.sh
new file mode 100755
index 0000000..359b0c0
--- /dev/null
+++ b/tools/testing/module-unloading/endless_mod.sh
@@ -0,0 +1,81 @@
+#!/bin/sh
+
+fatal() {
+ echo $1
+ exit 1
+}
+
+usage() {
+ echo "Usage: `basename $0` [-t second] <module>"
+ echo "Where:"
+ echo " second: seconds to sleep between module actions"
+ echo " module: name of module to test"
+}
+
+fatal_usage() {
+ usage
+ exit 1
+}
+
+SLEEPSEC=10
+
+while getopts "t:" opt
+do
+ case $opt in
+ t) SLEEPSEC=$OPTARG;;
+ ?) echo "Invalid argument $opt"
+ fatal_usage;;
+ esac
+done
+shift $(($OPTIND - 1))
+
+if [ "x$1" = "x" ]; then
+ echo "Missing <module> paraemter."
+ fatal_usage
+fi
+
+find_module() {
+ curr_modules=`lsmod | cut -d " " -f1`
+
+ for m in $curr_modules; do
+ if [ "x$m" = "x$1" ]; then
+ return 0
+ fi
+ done
+ return 1
+}
+
+remove_module() {
+ while :
+ do
+ find_module $1
+ if [ $? -eq 0 ]; then
+ rmmod $1
+ echo "Removing $1 ..."
+ else
+ break
+ fi
+ done
+}
+
+insert_module() {
+ while :
+ do
+ find_module $1
+ if [ ! $? -eq 0 ]; then
+ modprobe $1
+ echo "Inserting $1 ..."
+ else
+ break
+ fi
+ done
+}
+
+while :
+do
+ echo "-----------------------------------"
+ insert_module $1
+ sleep $SLEEPSEC
+ remove_module $1
+ sleep $SLEEPSEC
+done
--
1.7.10
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