[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/samples/kprobes/jprobe_example.c b/src/kernel/linux/v4.14/samples/kprobes/jprobe_example.c
new file mode 100644
index 0000000..e3c0a40
--- /dev/null
+++ b/src/kernel/linux/v4.14/samples/kprobes/jprobe_example.c
@@ -0,0 +1,67 @@
+/*
+ * Here's a sample kernel module showing the use of jprobes to dump
+ * the arguments of _do_fork().
+ *
+ * For more information on theory of operation of jprobes, see
+ * Documentation/kprobes.txt
+ *
+ * Build and insert the kernel module as done in the kprobe example.
+ * You will see the trace data in /var/log/messages and on the
+ * console whenever _do_fork() is invoked to create a new process.
+ * (Some messages may be suppressed if syslogd is configured to
+ * eliminate duplicate messages.)
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/kprobes.h>
+
+/*
+ * Jumper probe for _do_fork.
+ * Mirror principle enables access to arguments of the probed routine
+ * from the probe handler.
+ */
+
+/* Proxy routine having the same arguments as actual _do_fork() routine */
+static long j_do_fork(unsigned long clone_flags, unsigned long stack_start,
+ unsigned long stack_size, int __user *parent_tidptr,
+ int __user *child_tidptr, unsigned long tls)
+{
+ pr_info("jprobe: clone_flags = 0x%lx, stack_start = 0x%lx "
+ "stack_size = 0x%lx\n", clone_flags, stack_start, stack_size);
+
+ /* Always end with a call to jprobe_return(). */
+ jprobe_return();
+ return 0;
+}
+
+static struct jprobe my_jprobe = {
+ .entry = j_do_fork,
+ .kp = {
+ .symbol_name = "_do_fork",
+ },
+};
+
+static int __init jprobe_init(void)
+{
+ int ret;
+
+ ret = register_jprobe(&my_jprobe);
+ if (ret < 0) {
+ pr_err("register_jprobe failed, returned %d\n", ret);
+ return -1;
+ }
+ pr_info("Planted jprobe at %p, handler addr %p\n",
+ my_jprobe.kp.addr, my_jprobe.entry);
+ return 0;
+}
+
+static void __exit jprobe_exit(void)
+{
+ unregister_jprobe(&my_jprobe);
+ pr_info("jprobe at %p unregistered\n", my_jprobe.kp.addr);
+}
+
+module_init(jprobe_init)
+module_exit(jprobe_exit)
+MODULE_LICENSE("GPL");