drivers/edac/edac_stub.c

   1 /*
   2  * common EDAC components that must be in kernel
   3  *
   4  * Author: Dave Jiang <djiang@mvista.com>
   5  *
   6  * 2007 (c) MontaVista Software, Inc. This file is licensed under
   7  * the terms of the GNU General Public License version 2. This program
   8  * is licensed "as is" without any warranty of any kind, whether express
   9  * or implied.
  10  *
  11  */
  12 #include <linux/module.h>
  13 #include <linux/edac.h>
  14 #include <asm/atomic.h>
  15 #include <asm/edac.h>
  16
  17 int edac_op_state = EDAC_OPSTATE_INVAL;
  18 EXPORT_SYMBOL_GPL(edac_op_state);
  19
  20 atomic_t edac_handlers = ATOMIC_INIT(0);
  21 EXPORT_SYMBOL_GPL(edac_handlers);
  22
  23 int edac_err_assert = 0;
  24 EXPORT_SYMBOL_GPL(edac_err_assert);
  25
  26 /*
  27  * called to determine if there is an EDAC driver interested in
  28  * knowing an event (such as NMI) occurred
  29  */
  30 int edac_handler_set(void)
  31 {
  32         if (edac_op_state == EDAC_OPSTATE_POLL)
  33                 return 0;
  34
  35         return atomic_read(&edac_handlers);
  36 }
  37 EXPORT_SYMBOL_GPL(edac_handler_set);
  38
  39 /*
  40  * handler for NMI type of interrupts to assert error
  41  */
  42 void edac_atomic_assert_error(void)
  43 {
  44         edac_err_assert++;
  45 }
  46 EXPORT_SYMBOL_GPL(edac_atomic_assert_error);