release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/edac/edac_mce.c

   1 /* Provides edac interface to mcelog events
   2  *
   3  * This file may be distributed under the terms of the
   4  * GNU General Public License version 2.
   5  *
   6  * Copyright (c) 2009 by:
   7  *       Mauro Carvalho Chehab <mchehab@redhat.com>
   8  *
   9  * Red Hat Inc. http://www.redhat.com
  10  */
  11
  12 #include <linux/module.h>
  13 #include <linux/edac_mce.h>
  14 #include <asm/mce.h>
  15
  16 int edac_mce_enabled;
  17 EXPORT_SYMBOL_GPL(edac_mce_enabled);
  18
  19
  20 /*
  21  * Extension interface
  22  */
  23
  24 static LIST_HEAD(edac_mce_list);
  25 static DEFINE_MUTEX(edac_mce_lock);
  26
  27 int edac_mce_register(struct edac_mce *edac_mce)
  28 {
  29         mutex_lock(&edac_mce_lock);
  30         list_add_tail(&edac_mce->list, &edac_mce_list);
  31         mutex_unlock(&edac_mce_lock);
  32         return 0;
  33 }
  34 EXPORT_SYMBOL(edac_mce_register);
  35
  36 void edac_mce_unregister(struct edac_mce *edac_mce)
  37 {
  38         mutex_lock(&edac_mce_lock);
  39         list_del(&edac_mce->list);
  40         mutex_unlock(&edac_mce_lock);
  41 }
  42 EXPORT_SYMBOL(edac_mce_unregister);
  43
  44 int edac_mce_parse(struct mce *mce)
  45 {
  46         struct edac_mce *edac_mce;
  47
  48         list_for_each_entry(edac_mce, &edac_mce_list, list) {
  49                 if (edac_mce->check_error(edac_mce->priv, mce))
  50                         return 1;
  51         }
  52
  53         /* Nobody queued the error */
  54         return 0;
  55 }
  56 EXPORT_SYMBOL_GPL(edac_mce_parse);
  57
  58 MODULE_LICENSE("GPL");
  59 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>");
  60 MODULE_AUTHOR("Red Hat Inc. (http://www.redhat.com)");
  61 MODULE_DESCRIPTION("EDAC Driver for mcelog captured errors");