tests/kernel/test-printk-effect.c

   1 /* test-time-probe.c
   2  *
   3  * Test printk effect on timer interrupt.
   4  */
   5
   6
   7 #include <linux/init.h>
   8 #include <linux/module.h>
   9 #include <linux/ltt-core.h>
  10
  11 #define NR_LOOPS 20000
  12
  13 static int ltt_test_init(void)
  14 {
  15         unsigned int i;
  16
  17         printk(KERN_ALERT "test init\n");
  18
  19         for(i=0; i<NR_LOOPS; i++) {
  20                 printk(KERN_ALERT "Flooding the console\n");
  21         }
  22         printk(KERN_ALERT "test end\n");
  23
  24         return -EAGAIN; /* Fail will directly unload the module */
  25 }
  26
  27 static void ltt_test_exit(void)
  28 {
  29         printk(KERN_ALERT "test exit\n");
  30 }
  31
  32 module_init(ltt_test_init)
  33 module_exit(ltt_test_exit)
  34
  35 MODULE_LICENSE("GPL");
  36 MODULE_AUTHOR("Mathieu Desnoyers");
  37 MODULE_DESCRIPTION("Linux Trace Toolkit Test");
  38