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