tests/kernel/ltt-facility-loader-tests.c

   1 /*
   2  * ltt-facility-loader-tests.c
   3  *
   4  * (C) Copyright  2005 -
   5  *          Mathieu Desnoyers (mathieu.desnoyers@polymtl.ca)
   6  *
   7  * Contains the LTT facility loader.
   8  *
   9  */
  10
  11
  12 #include <linux/ltt-facilities.h>
  13 #include <linux/module.h>
  14 #include <linux/init.h>
  15 #include "ltt-facility-loader-tests.h"
  16
  17
  18 #ifdef CONFIG_LTT
  19
  20 EXPORT_SYMBOL(LTT_FACILITY_SYMBOL);
  21 EXPORT_SYMBOL(LTT_FACILITY_CHECKSUM_SYMBOL);
  22
  23 static const char ltt_facility_name[] = LTT_FACILITY_NAME;
  24
  25 #define SYMBOL_STRING(sym) #sym
  26
  27 static struct ltt_facility facility = {
  28         .name = ltt_facility_name,
  29         .num_events = LTT_FACILITY_NUM_EVENTS,
  30         .checksum = LTT_FACILITY_CHECKSUM,
  31         .symbol = SYMBOL_STRING(LTT_FACILITY_SYMBOL),
  32 };
  33
  34 static int __init facility_init(void)
  35 {
  36         printk(KERN_INFO "LTT : ltt-facility-tests init in kernel\n");
  37
  38         LTT_FACILITY_SYMBOL = ltt_facility_kernel_register(&facility);
  39         LTT_FACILITY_CHECKSUM_SYMBOL = LTT_FACILITY_SYMBOL;
  40
  41         return LTT_FACILITY_SYMBOL;
  42 }
  43
  44 #ifndef MODULE
  45 __initcall(facility_init);
  46 #else
  47 module_init(facility_init);
  48 static void __exit facility_exit(void)
  49 {
  50         int err;
  51
  52         err = ltt_facility_unregister(LTT_FACILITY_SYMBOL);
  53         if (err != 0)
  54                 printk(KERN_ERR "LTT : Error in unregistering facility.\n");
  55
  56 }
  57 module_exit(facility_exit)
  58
  59 MODULE_LICENSE("GPL");
  60 MODULE_AUTHOR("Mathieu Desnoyers");
  61 MODULE_DESCRIPTION("Linux Trace Toolkit Facility");
  62
  63 #endif //MODULE
  64
  65 #endif //CONFIG_LTT