edac_mce: Add an interface driver to report mce errors via edac

edac_mce module is an interface module that gets mcelog data and
forwards to any registered edac module that expects to receive data via
mce.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 58 insertions, 0 deletions

diff --git a/drivers/edac/edac_mce.c b/drivers/edac/edac_mce.c
new file mode 100644
index 000000000000..b1efa8e51921
--- /dev/null
+++ b/drivers/edac/edac_mce.c
@@ -0,0 +1,58 @@
+/* Provides edac interface to mcelog events
+ *
+ * This file may be distributed under the terms of the
+ * GNU General Public License version 2.
+ *
+ * Copyright (c) 2009 by:
+ *       Mauro Carvalho Chehab <mchehab@redhat.com>
+ *
+ * Red Hat Inc. http://www.redhat.com
+ */
+
+#include <linux/module.h>
+#include <linux/edac_mce.h>
+#include <asm/mce.h>
+
+int edac_mce_enabled;
+EXPORT_SYMBOL_GPL(edac_mce_enabled);
+
+
+/*
+ * Extension interface
+ */
+
+static LIST_HEAD(edac_mce_list);
+static DEFINE_MUTEX(edac_mce_lock);
+
+int edac_mce_register(struct edac_mce *edac_mce)
+{
+        mutex_lock(&edac_mce_lock);
+        list_add_tail(&edac_mce->list, &edac_mce_list);
+        mutex_unlock(&edac_mce_lock);
+        return 0;
+}
+EXPORT_SYMBOL(edac_mce_register);
+
+void edac_mce_unregister(struct edac_mce *edac_mce)
+{
+        mutex_lock(&edac_mce_lock);
+        list_del(&edac_mce->list);
+        mutex_unlock(&edac_mce_lock);
+}
+EXPORT_SYMBOL(edac_mce_unregister);
+
+
+
+int edac_mce_queue(struct mce *mce)
+{
+        struct edac_mce *edac_mce;
+
+        list_for_each_entry(edac_mce, &edac_mce_list, list) {
+                if (edac_mce->check_error(edac_mce->priv, mce))
+                        return 1;
+        }
+
+        /* Nobody queued the error */
+        return 0;
+}
+EXPORT_SYMBOL_GPL(edac_mce_queue);