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 #include <asm/ptrace.h>
  10
  11 volatile int x=7;
  12
  13 struct proc_dir_entry *pentry = NULL;
  14
  15 static inline void test(struct pt_regs * regs)
  16 {
  17         MARK(kernel_debug_test, "%d %ld %p", 2, regs->eip, regs);
  18 }
  19
  20 static int my_open(struct inode *inode, struct file *file)
  21 {
  22         unsigned int i;
  23
  24         for(i=0; i<2; i++) {
  25                 MARK(subsys_mark1, "%d", 1);
  26                 x=i;
  27                 barrier();
  28         }
  29         MARK(subsys_mark2, "%d %s", 2, "blah2");
  30         MARK(subsys_mark3, "%d %s %s", x, "blah3", "blah5");
  31         test(NULL);
  32         test(NULL);
  33
  34         return -EPERM;
  35 }
  36
  37
  38 static struct file_operations my_operations = {
  39         .open = my_open,
  40 };
  41
  42 int init_module(void)
  43 {
  44         unsigned int i;
  45
  46         pentry = create_proc_entry("testmark", 0444, NULL);
  47         if (pentry)
  48                 pentry->proc_fops = &my_operations;
  49
  50         marker_list_probe(NULL);
  51
  52         return 0;
  53 }
  54
  55 void cleanup_module(void)
  56 {
  57         remove_proc_entry("testmark", NULL);
  58 }
  59
  60 MODULE_LICENSE("GPL");
  61 MODULE_AUTHOR("Mathieu Desnoyers");
  62 MODULE_DESCRIPTION("Marker Test");
  63