summaryrefslogtreecommitdiff
path: root/drivers/edac/edac_stub.c
diff options
context:
space:
mode:
authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /drivers/edac/edac_stub.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
downloadFOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz
FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2
FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip
Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'drivers/edac/edac_stub.c')
-rw-r--r--drivers/edac/edac_stub.c91
1 files changed, 91 insertions, 0 deletions
diff --git a/drivers/edac/edac_stub.c b/drivers/edac/edac_stub.c
new file mode 100644
index 00000000..6c86f6e5
--- /dev/null
+++ b/drivers/edac/edac_stub.c
@@ -0,0 +1,91 @@
+/*
+ * common EDAC components that must be in kernel
+ *
+ * Author: Dave Jiang <djiang@mvista.com>
+ *
+ * 2007 (c) MontaVista Software, Inc.
+ * 2010 (c) Advanced Micro Devices Inc.
+ * Borislav Petkov <borislav.petkov@amd.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ *
+ */
+#include <linux/module.h>
+#include <linux/edac.h>
+#include <linux/atomic.h>
+#include <linux/device.h>
+#include <asm/edac.h>
+
+int edac_op_state = EDAC_OPSTATE_INVAL;
+EXPORT_SYMBOL_GPL(edac_op_state);
+
+atomic_t edac_handlers = ATOMIC_INIT(0);
+EXPORT_SYMBOL_GPL(edac_handlers);
+
+int edac_err_assert = 0;
+EXPORT_SYMBOL_GPL(edac_err_assert);
+
+static atomic_t edac_subsys_valid = ATOMIC_INIT(0);
+
+/*
+ * called to determine if there is an EDAC driver interested in
+ * knowing an event (such as NMI) occurred
+ */
+int edac_handler_set(void)
+{
+ if (edac_op_state == EDAC_OPSTATE_POLL)
+ return 0;
+
+ return atomic_read(&edac_handlers);
+}
+EXPORT_SYMBOL_GPL(edac_handler_set);
+
+/*
+ * handler for NMI type of interrupts to assert error
+ */
+void edac_atomic_assert_error(void)
+{
+ edac_err_assert++;
+}
+EXPORT_SYMBOL_GPL(edac_atomic_assert_error);
+
+/*
+ * sysfs object: /sys/devices/system/edac
+ * need to export to other files
+ */
+struct bus_type edac_subsys = {
+ .name = "edac",
+ .dev_name = "edac",
+};
+EXPORT_SYMBOL_GPL(edac_subsys);
+
+/* return pointer to the 'edac' node in sysfs */
+struct bus_type *edac_get_sysfs_subsys(void)
+{
+ int err = 0;
+
+ if (atomic_read(&edac_subsys_valid))
+ goto out;
+
+ /* create the /sys/devices/system/edac directory */
+ err = subsys_system_register(&edac_subsys, NULL);
+ if (err) {
+ printk(KERN_ERR "Error registering toplevel EDAC sysfs dir\n");
+ return NULL;
+ }
+
+out:
+ atomic_inc(&edac_subsys_valid);
+ return &edac_subsys;
+}
+EXPORT_SYMBOL_GPL(edac_get_sysfs_subsys);
+
+void edac_put_sysfs_subsys(void)
+{
+ /* last user unregisters it */
+ if (atomic_dec_and_test(&edac_subsys_valid))
+ bus_unregister(&edac_subsys);
+}
+EXPORT_SYMBOL_GPL(edac_put_sysfs_subsys);