Move backtrace tests to tests/

Move backtrace selftests to tests/

Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

3 files changed, 61 insertions, 0 deletions

diff --git a/tests/Kconfig b/tests/Kconfig
index 8deefaa2cd2c..b0a9e8ef295d 100644
--- a/tests/Kconfig
+++ b/tests/Kconfig
@@ -64,4 +64,16 @@ config KPROBES_SANITY_TEST
 
 	  Say N if you are unsure.
 
+config BACKTRACE_SELF_TEST
+	tristate "Self test for the backtrace code"
+	depends on DEBUG_KERNEL
+	default n
+	help
+	  This option provides a kernel module that can be used to test
+	  the kernel stack backtrace code. This option is not useful
+	  for distributions or general kernels, but only for kernel
+	  developers working on architecture code.
+
+	  Say N if you are unsure.
+
 endif # KERNEL_TESTS
diff --git a/tests/Makefile b/tests/Makefile
index 455cd12c607c..1d56a9ea5993 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -7,3 +7,4 @@ obj-$(CONFIG_RCU_TORTURE_TEST) += rcutorture.o
 obj-$(CONFIG_RT_MUTEX_TESTER) += rtmutex-tester.o
 obj-$(CONFIG_LKDTM) += lkdtm.o
 obj-$(CONFIG_KPROBES_SANITY_TEST) += test_kprobes.o
+obj-$(CONFIG_BACKTRACE_SELF_TEST) += backtracetest.o
diff --git a/tests/backtracetest.c b/tests/backtracetest.c
new file mode 100644
index 000000000000..d1a7605c5b8f
--- /dev/null
+++ b/tests/backtracetest.c
@@ -0,0 +1,48 @@
+/*
+ * Simple stack backtrace regression test module
+ *
+ * (C) Copyright 2008 Intel Corporation
+ * Author: Arjan van de Ven <arjan@linux.intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; version 2
+ * of the License.
+ */
+
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/delay.h>
+
+static struct timer_list backtrace_timer;
+
+static void backtrace_test_timer(unsigned long data)
+{
+	printk("Testing a backtrace from irq context.\n");
+	printk("The following trace is a kernel self test and not a bug!\n");
+	dump_stack();
+}
+static int backtrace_regression_test(void)
+{
+	printk("====[ backtrace testing ]===========\n");
+	printk("Testing a backtrace from process context.\n");
+	printk("The following trace is a kernel self test and not a bug!\n");
+	dump_stack();
+
+	init_timer(&backtrace_timer);
+	backtrace_timer.function = backtrace_test_timer;
+	mod_timer(&backtrace_timer, jiffies + 10);
+
+	msleep(10);
+	printk("====[ end of backtrace testing ]====\n");
+	return 0;
+}
+
+static void exitf(void)
+{
+}
+
+module_init(backtrace_regression_test);
+module_exit(exitf);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Arjan van de Ven <arjan@linux.intel.com>");