drivers/edac: add device sysfs attributes
Added new controls for the edac_device and edac_mc sysfs folder.
These can be initialized by the low level driver to provide misc
controls into the low level driver for its use
Signed-off-by: Douglas Thompson <dougthompson@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c
index 8eaa1d6..029ce89 100644
--- a/drivers/edac/edac_mc_sysfs.c
+++ b/drivers/edac/edac_mc_sysfs.c
@@ -1,15 +1,14 @@
/*
* edac_mc kernel module
- * (C) 2005, 2006 Linux Networx (http://lnxi.com)
+ * (C) 2005-2007 Linux Networx (http://lnxi.com)
+ *
* This file may be distributed under the terms of the
* GNU General Public License.
*
- * Written Doug Thompson <norsk5@xmission.com>
+ * Written Doug Thompson <norsk5@xmission.com> www.softwarebitmaker.com
*
*/
-#include <linux/module.h>
-#include <linux/sysdev.h>
#include <linux/ctype.h>
#include "edac_core.h"
@@ -661,21 +660,15 @@
return sprintf(data, "%u\n", PAGES_TO_MiB(total_pages));
}
-struct mcidev_attribute {
- struct attribute attr;
- ssize_t(*show) (struct mem_ctl_info *, char *);
- ssize_t(*store) (struct mem_ctl_info *, const char *, size_t);
-};
-
#define to_mci(k) container_of(k, struct mem_ctl_info, edac_mci_kobj)
-#define to_mcidev_attr(a) container_of(a, struct mcidev_attribute, attr)
+#define to_mcidev_attr(a) container_of(a,struct mcidev_sysfs_attribute,attr)
/* MCI show/store functions for top most object */
static ssize_t mcidev_show(struct kobject *kobj, struct attribute *attr,
char *buffer)
{
struct mem_ctl_info *mem_ctl_info = to_mci(kobj);
- struct mcidev_attribute *mcidev_attr = to_mcidev_attr(attr);
+ struct mcidev_sysfs_attribute *mcidev_attr = to_mcidev_attr(attr);
if (mcidev_attr->show)
return mcidev_attr->show(mem_ctl_info, buffer);
@@ -687,7 +680,7 @@
const char *buffer, size_t count)
{
struct mem_ctl_info *mem_ctl_info = to_mci(kobj);
- struct mcidev_attribute *mcidev_attr = to_mcidev_attr(attr);
+ struct mcidev_sysfs_attribute *mcidev_attr = to_mcidev_attr(attr);
if (mcidev_attr->store)
return mcidev_attr->store(mem_ctl_info, buffer, count);
@@ -701,7 +694,7 @@
};
#define MCIDEV_ATTR(_name,_mode,_show,_store) \
-static struct mcidev_attribute mci_attr_##_name = { \
+static struct mcidev_sysfs_attribute mci_attr_##_name = { \
.attr = {.name = __stringify(_name), .mode = _mode }, \
.show = _show, \
.store = _store, \
@@ -723,7 +716,7 @@
MCIDEV_ATTR(sdram_scrub_rate, S_IRUGO | S_IWUSR, mci_sdram_scrub_rate_show,
mci_sdram_scrub_rate_store);
-static struct mcidev_attribute *mci_attr[] = {
+static struct mcidev_sysfs_attribute *mci_attr[] = {
&mci_attr_reset_counters,
&mci_attr_mc_name,
&mci_attr_size_mb,
@@ -757,6 +750,34 @@
#define EDAC_DEVICE_SYMLINK "device"
/*
+ * edac_create_driver_attributes
+ * create MC driver specific attributes at the topmost level
+ * directory of this mci instance.
+ */
+static int edac_create_driver_attributes(struct mem_ctl_info *mci)
+{
+ int err;
+ struct mcidev_sysfs_attribute *sysfs_attrib;
+
+ /* point to the start of the array and iterate over it
+ * adding each attribute listed to this mci instance's kobject
+ */
+ sysfs_attrib = mci->mc_driver_sysfs_attributes;
+
+ while (sysfs_attrib->attr.name != NULL) {
+ err = sysfs_create_file(&mci->edac_mci_kobj,
+ (struct attribute*) sysfs_attrib);
+ if (err) {
+ return err;
+ }
+
+ sysfs_attrib++;
+ }
+
+ return 0;
+}
+
+/*
* Create a new Memory Controller kobject instance,
* mc<id> under the 'mc' directory
*
@@ -794,6 +815,15 @@
if (err)
goto fail0;
+ /* If the low level driver desires some attributes,
+ * then create them now for the driver.
+ */
+ if (mci->mc_driver_sysfs_attributes) {
+ err = edac_create_driver_attributes(mci);
+ if (err)
+ goto fail0;
+ }
+
/* Make directories for each CSROW object
* under the mc<id> kobject
*/