2007-07-02 Martin Hunt <hunt@redhat.com>

	* systemtap.context/*: New context tests.

1 files changed, 99 insertions, 0 deletions

diff --git a/testsuite/systemtap.context/systemtap_test_module1.c b/testsuite/systemtap.context/systemtap_test_module1.c
new file mode 100644
index 00000000..cfa76cf0
--- /dev/null
+++ b/testsuite/systemtap.context/systemtap_test_module1.c
@@ -0,0 +1,99 @@
+/* -*- linux-c -*- 
+ * Systemtap Test Module 1
+ * Copyright (C) 2007 Red Hat Inc.
+ *
+ * This file is part of systemtap, and is free software.  You can
+ * redistribute it and/or modify it under the terms of the GNU General
+ * Public License (GPL); either version 2, or (at your option) any
+ * later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/proc_fs.h>
+#include <linux/compiler.h>
+#include <asm/uaccess.h>
+
+/* The purpose of this module is to provide a bunch of functions that */
+/* do nothing important, and then call them in different contexts. */
+/* We use a /proc file to trigger function calls from user context. */
+/* Then systemtap scripts set probes on the functions and run tests */
+/* to see if the expected output is received. This is better than using */
+/* the kernel because kernel internals frequently change. */
+
+/** These functions are in module 2 **/
+/* They are there to prevent compiler optimization from */
+/* optimizing away functions. */
+int yyy_func1 (int);
+int yyy_int (int,int,int);
+unsigned yyy_uint (unsigned,unsigned,unsigned);
+long yyy_long (long,long,long);
+int64_t yyy_int64 (int64_t,int64_t,int64_t);
+char yyy_char(char, char, char);
+char *yyy_str(char *, char *, char *);
+
+/************ Below are the functions to create this module ************/
+
+static struct proc_dir_entry *stm_ctl = NULL;
+
+static ssize_t stm_write_cmd (struct file *file, const char __user *buf,
+			       size_t count, loff_t *ppos)
+{
+  char type;
+
+  if (get_user(type, (int __user *)buf))
+	  return -EFAULT;
+
+  switch (type) {
+  case '0':
+	  yyy_func1(1234);
+	  break;
+  case '1':
+	  yyy_int(-1, 200, 300);
+	  break;
+  case '2':
+	  yyy_uint((unsigned)-1, 200, 300);
+	  break;
+  case '3':
+	  yyy_long(-1L, 200L, 300L);
+	  break;
+  case '4':
+	  yyy_int64(-1, 200, 300);
+	  break;
+  case '5':
+	  yyy_char('a', 'b', 'c');
+	  break;
+  case '6':
+	  yyy_str("Hello", "System", "Tap");
+	  break;
+  default:
+	  printk ("systemtap_bt_test_module: invalid command type %d\n", type);
+	  return -EINVAL;
+  }
+  
+  return count;
+}
+
+static struct file_operations stm_fops_cmd = {
+	.owner = THIS_MODULE,
+	.write = stm_write_cmd,
+};
+
+int init_module(void)
+{
+
+	stm_ctl = create_proc_entry ("stap_test_cmd", 0666, NULL);
+	if (stm_ctl == NULL) 
+		return -1;;
+	stm_ctl->proc_fops = &stm_fops_cmd;
+	return 0;
+}
+
+void cleanup_module(void)
+{
+	if (stm_ctl)
+		remove_proc_entry ("stap_test_cmd", NULL);
+}
+
+MODULE_DESCRIPTION("systemtap backtrace test module1");
+MODULE_LICENSE("GPL");