tests/kernel/test-mark.c

   1 /* test-mark.c
   2  *
   3  */
   4
   5 #include <linux/marker.h>
   6 #include <linux/module.h>
   7 #include <linux/proc_fs.h>
   8 #include <linux/sched.h>
   9
  10 volatile int x=7;
  11
  12 struct proc_dir_entry *pentry = NULL;
  13
  14 static int my_open(struct inode *inode, struct file *file)
  15 {
  16         unsigned int i;
  17
  18         for(i=0; i<2; i++) {
  19                 MARK(subsys_mark1, "%d", 1);
  20                 x=i;
  21                 barrier();
  22         }
  23         MARK(subsys_mark2, "%d %s", 2, "blah2");
  24         MARK(subsys_mark3, "%d %s %s", x, "blah3", "blah5");
  25
  26         return -EPERM;
  27 }
  28
  29
  30 static struct file_operations my_operations = {
  31         .open = my_open,
  32 };
  33
  34 int init_module(void)
  35 {
  36         pentry = create_proc_entry("testmark", 0444, NULL);
  37         if (pentry)
  38                 pentry->proc_fops = &my_operations;
  39         return 0;
  40 }
  41
  42 void cleanup_module(void)
  43 {
  44         remove_proc_entry("testmark", NULL);
  45 }
  46
  47 MODULE_LICENSE("GPL");
  48 MODULE_AUTHOR("Mathieu Desnoyers");
  49 MODULE_DESCRIPTION("Marker Test");
  50