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-rw-r--r--drivers/edac/edac_core.h4
-rw-r--r--drivers/edac/edac_mc.c36
-rw-r--r--drivers/edac/edac_mc_sysfs.c568
-rw-r--r--drivers/edac/edac_module.c32
-rw-r--r--drivers/edac/edac_module.h8
5 files changed, 399 insertions, 249 deletions
diff --git a/drivers/edac/edac_core.h b/drivers/edac/edac_core.h
index 2c399c52193e..bd7f00cf2443 100644
--- a/drivers/edac/edac_core.h
+++ b/drivers/edac/edac_core.h
@@ -317,9 +317,8 @@ struct csrow_info {
struct mem_ctl_info *mci; /* the parent */
struct kobject kobj; /* sysfs kobject for this csrow */
- struct completion kobj_complete;
- /* FIXME the number of CHANNELs might need to become dynamic */
+ /* channel information for this csrow */
u32 nr_channels;
struct channel_info *channels;
};
@@ -403,7 +402,6 @@ struct mem_ctl_info {
/* edac sysfs device control */
struct kobject edac_mci_kobj;
- struct completion kobj_complete;
/* Additional top controller level attributes, but specified
* by the low level driver.
diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c
index 6e4c94e9654a..2d53cb38868a 100644
--- a/drivers/edac/edac_mc.c
+++ b/drivers/edac/edac_mc.c
@@ -137,6 +137,7 @@ struct mem_ctl_info *edac_mc_alloc(unsigned sz_pvt, unsigned nr_csrows,
void *pvt;
unsigned size;
int row, chn;
+ int err;
/* Figure out the offsets of the various items from the start of an mc
* structure. We want the alignment of each item to be at least as
@@ -149,7 +150,8 @@ struct mem_ctl_info *edac_mc_alloc(unsigned sz_pvt, unsigned nr_csrows,
pvt = edac_align_ptr(&chi[nr_chans * nr_csrows], sz_pvt);
size = ((unsigned long)pvt) + sz_pvt;
- if ((mci = kmalloc(size, GFP_KERNEL)) == NULL)
+ mci = kzalloc(size, GFP_KERNEL);
+ if (mci == NULL)
return NULL;
/* Adjust pointers so they point within the memory we just allocated
@@ -182,20 +184,34 @@ struct mem_ctl_info *edac_mc_alloc(unsigned sz_pvt, unsigned nr_csrows,
mci->op_state = OP_ALLOC;
+ /*
+ * Initialize the 'root' kobj for the edac_mc controller
+ */
+ err = edac_mc_register_sysfs_main_kobj(mci);
+ if (err) {
+ kfree(mci);
+ return NULL;
+ }
+
+ /* at this point, the root kobj is valid, and in order to
+ * 'free' the object, then the function:
+ * edac_mc_unregister_sysfs_main_kobj() must be called
+ * which will perform kobj unregistration and the actual free
+ * will occur during the kobject callback operation
+ */
return mci;
}
-
EXPORT_SYMBOL_GPL(edac_mc_alloc);
/**
- * edac_mc_free: Free a previously allocated 'mci' structure
+ * edac_mc_free
+ * 'Free' a previously allocated 'mci' structure
* @mci: pointer to a struct mem_ctl_info structure
*/
void edac_mc_free(struct mem_ctl_info *mci)
{
- kfree(mci);
+ edac_mc_unregister_sysfs_main_kobj(mci);
}
-
EXPORT_SYMBOL_GPL(edac_mc_free);
static struct mem_ctl_info *find_mci_by_dev(struct device *dev)
@@ -391,7 +407,6 @@ struct mem_ctl_info *edac_mc_find(int idx)
return NULL;
}
-
EXPORT_SYMBOL(edac_mc_find);
/**
@@ -465,7 +480,6 @@ fail0:
mutex_unlock(&mem_ctls_mutex);
return 1;
}
-
EXPORT_SYMBOL_GPL(edac_mc_add_mc);
/**
@@ -501,7 +515,6 @@ struct mem_ctl_info *edac_mc_del_mc(struct device *dev)
mci->mod_name, mci->ctl_name, dev_name(mci));
return mci;
}
-
EXPORT_SYMBOL_GPL(edac_mc_del_mc);
static void edac_mc_scrub_block(unsigned long page, unsigned long offset,
@@ -571,7 +584,6 @@ int edac_mc_find_csrow_by_page(struct mem_ctl_info *mci, unsigned long page)
return row;
}
-
EXPORT_SYMBOL_GPL(edac_mc_find_csrow_by_page);
/* FIXME - setable log (warning/emerg) levels */
@@ -636,7 +648,6 @@ void edac_mc_handle_ce(struct mem_ctl_info *mci,
mci->csrows[row].grain);
}
}
-
EXPORT_SYMBOL_GPL(edac_mc_handle_ce);
void edac_mc_handle_ce_no_info(struct mem_ctl_info *mci, const char *msg)
@@ -648,7 +659,6 @@ void edac_mc_handle_ce_no_info(struct mem_ctl_info *mci, const char *msg)
mci->ce_noinfo_count++;
mci->ce_count++;
}
-
EXPORT_SYMBOL_GPL(edac_mc_handle_ce_no_info);
void edac_mc_handle_ue(struct mem_ctl_info *mci,
@@ -702,7 +712,6 @@ void edac_mc_handle_ue(struct mem_ctl_info *mci,
mci->ue_count++;
mci->csrows[row].ue_count++;
}
-
EXPORT_SYMBOL_GPL(edac_mc_handle_ue);
void edac_mc_handle_ue_no_info(struct mem_ctl_info *mci, const char *msg)
@@ -716,7 +725,6 @@ void edac_mc_handle_ue_no_info(struct mem_ctl_info *mci, const char *msg)
mci->ue_noinfo_count++;
mci->ue_count++;
}
-
EXPORT_SYMBOL_GPL(edac_mc_handle_ue_no_info);
/*************************************************************
@@ -784,7 +792,6 @@ void edac_mc_handle_fbd_ue(struct mem_ctl_info *mci,
"labels \"%s\": %s\n", csrow, channela,
channelb, labels, msg);
}
-
EXPORT_SYMBOL(edac_mc_handle_fbd_ue);
/*************************************************************
@@ -824,7 +831,6 @@ void edac_mc_handle_fbd_ce(struct mem_ctl_info *mci,
mci->csrows[csrow].ce_count++;
mci->csrows[csrow].channels[channel].ce_count++;
}
-
EXPORT_SYMBOL(edac_mc_handle_fbd_ce);
/*
diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c
index 0843eaa10ec9..cd090b0677a7 100644
--- a/drivers/edac/edac_mc_sysfs.c
+++ b/drivers/edac/edac_mc_sysfs.c
@@ -10,10 +10,12 @@
*/
#include <linux/ctype.h>
+#include <linux/bug.h>
#include "edac_core.h"
#include "edac_module.h"
+
/* MC EDAC Controls, setable by module parameter, and sysfs */
static int edac_mc_log_ue = 1;
static int edac_mc_log_ce = 1;
@@ -98,15 +100,7 @@ static const char *edac_caps[] = {
[EDAC_S16ECD16ED] = "S16ECD16ED"
};
-/* sysfs object:
- * /sys/devices/system/edac/mc
- */
-static struct kobject edac_memctrl_kobj;
-/* We use these to wait for the reference counts on edac_memctrl_kobj and
- * edac_pci_kobj to reach 0.
- */
-static struct completion edac_memctrl_kobj_complete;
/*
* /sys/devices/system/edac/mc;
@@ -128,153 +122,6 @@ static ssize_t memctrl_int_store(void *ptr, const char *buffer, size_t count)
return count;
}
-struct memctrl_dev_attribute {
- struct attribute attr;
- void *value;
- ssize_t(*show) (void *, char *);
- ssize_t(*store) (void *, const char *, size_t);
-};
-
-/* Set of show/store abstract level functions for memory control object */
-static ssize_t memctrl_dev_show(struct kobject *kobj,
- struct attribute *attr, char *buffer)
-{
- struct memctrl_dev_attribute *memctrl_dev;
- memctrl_dev = (struct memctrl_dev_attribute *)attr;
-
- if (memctrl_dev->show)
- return memctrl_dev->show(memctrl_dev->value, buffer);
-
- return -EIO;
-}
-
-static ssize_t memctrl_dev_store(struct kobject *kobj, struct attribute *attr,
- const char *buffer, size_t count)
-{
- struct memctrl_dev_attribute *memctrl_dev;
- memctrl_dev = (struct memctrl_dev_attribute *)attr;
-
- if (memctrl_dev->store)
- return memctrl_dev->store(memctrl_dev->value, buffer, count);
-
- return -EIO;
-}
-
-static struct sysfs_ops memctrlfs_ops = {
- .show = memctrl_dev_show,
- .store = memctrl_dev_store
-};
-
-#define MEMCTRL_ATTR(_name,_mode,_show,_store) \
-static struct memctrl_dev_attribute attr_##_name = { \
- .attr = {.name = __stringify(_name), .mode = _mode }, \
- .value = &_name, \
- .show = _show, \
- .store = _store, \
-};
-
-#define MEMCTRL_STRING_ATTR(_name,_data,_mode,_show,_store) \
-static struct memctrl_dev_attribute attr_##_name = { \
- .attr = {.name = __stringify(_name), .mode = _mode }, \
- .value = _data, \
- .show = _show, \
- .store = _store, \
-};
-
-/* csrow<id> control files */
-MEMCTRL_ATTR(edac_mc_panic_on_ue,
- S_IRUGO | S_IWUSR, memctrl_int_show, memctrl_int_store);
-
-MEMCTRL_ATTR(edac_mc_log_ue,
- S_IRUGO | S_IWUSR, memctrl_int_show, memctrl_int_store);
-
-MEMCTRL_ATTR(edac_mc_log_ce,
- S_IRUGO | S_IWUSR, memctrl_int_show, memctrl_int_store);
-
-MEMCTRL_ATTR(edac_mc_poll_msec,
- S_IRUGO | S_IWUSR, memctrl_int_show, memctrl_int_store);
-
-/* Base Attributes of the memory ECC object */
-static struct memctrl_dev_attribute *memctrl_attr[] = {
- &attr_edac_mc_panic_on_ue,
- &attr_edac_mc_log_ue,
- &attr_edac_mc_log_ce,
- &attr_edac_mc_poll_msec,
- NULL,
-};
-
-/* Main MC kobject release() function */
-static void edac_memctrl_master_release(struct kobject *kobj)
-{
- debugf1("%s()\n", __func__);
- complete(&edac_memctrl_kobj_complete);
-}
-
-static struct kobj_type ktype_memctrl = {
- .release = edac_memctrl_master_release,
- .sysfs_ops = &memctrlfs_ops,
- .default_attrs = (struct attribute **)memctrl_attr,
-};
-
-/* Initialize the main sysfs entries for edac:
- * /sys/devices/system/edac
- *
- * and children
- *
- * Return: 0 SUCCESS
- * !0 FAILURE
- */
-int edac_sysfs_memctrl_setup(void)
-{
- int err = 0;
- struct sysdev_class *edac_class;
-
- debugf1("%s()\n", __func__);
-
- /* get the /sys/devices/system/edac class reference */
- edac_class = edac_get_edac_class();
- if (edac_class == NULL) {
- debugf1("%s() no edac_class error=%d\n", __func__, err);
- return err;
- }
-
- /* Init the MC's kobject */
- memset(&edac_memctrl_kobj, 0, sizeof(edac_memctrl_kobj));
- edac_memctrl_kobj.parent = &edac_class->kset.kobj;
- edac_memctrl_kobj.ktype = &ktype_memctrl;
-
- /* generate sysfs "..../edac/mc" */
- err = kobject_set_name(&edac_memctrl_kobj, "mc");
- if (err) {
- debugf1("%s() Failed to set name '.../edac/mc'\n", __func__);
- return err;
- }
-
- /* FIXME: maybe new sysdev_create_subdir() */
- err = kobject_register(&edac_memctrl_kobj);
- if (err) {
- debugf1("%s() Failed to register '.../edac/mc'\n", __func__);
- return err;
- }
-
- debugf1("%s() Registered '.../edac/mc' kobject\n", __func__);
- return 0;
-}
-
-/*
- * MC teardown:
- * the '..../edac/mc' kobject followed by '..../edac' itself
- */
-void edac_sysfs_memctrl_teardown(void)
-{
- debugf0("MC: " __FILE__ ": %s()\n", __func__);
-
- /* Unregister the MC's kobject and wait for reference count to reach 0.
- */
- init_completion(&edac_memctrl_kobj_complete);
- kobject_unregister(&edac_memctrl_kobj);
- wait_for_completion(&edac_memctrl_kobj_complete);
-}
/* EDAC sysfs CSROW data structures and methods
*/
@@ -486,10 +333,15 @@ static int edac_create_channel_files(struct kobject *kobj, int chan)
/* No memory to release for this kobj */
static void edac_csrow_instance_release(struct kobject *kobj)
{
+ struct mem_ctl_info *mci;
struct csrow_info *cs;
+ debugf1("%s()\n", __func__);
+
cs = container_of(kobj, struct csrow_info, kobj);
- complete(&cs->kobj_complete);
+ mci = cs->mci;
+
+ kobject_put(&mci->edac_mci_kobj);
}
/* the kobj_type instance for a CSROW */
@@ -500,38 +352,61 @@ static struct kobj_type ktype_csrow = {
};
/* Create a CSROW object under specifed edac_mc_device */
-static int edac_create_csrow_object(struct kobject *edac_mci_kobj,
- struct csrow_info *csrow, int index)
+static int edac_create_csrow_object(struct mem_ctl_info *mci,
+ struct csrow_info *csrow, int index)
{
- int err = 0;
+ struct kobject *kobj_mci = &mci->edac_mci_kobj;
+ struct kobject *kobj;
int chan;
-
- memset(&csrow->kobj, 0, sizeof(csrow->kobj));
+ int err;
/* generate ..../edac/mc/mc<id>/csrow<index> */
-
- csrow->kobj.parent = edac_mci_kobj;
+ memset(&csrow->kobj, 0, sizeof(csrow->kobj));
+ csrow->mci = mci; /* include container up link */
+ csrow->kobj.parent = kobj_mci;
csrow->kobj.ktype = &ktype_csrow;
/* name this instance of csrow<id> */
err = kobject_set_name(&csrow->kobj, "csrow%d", index);
if (err)
- goto error_exit;
+ goto err_out;
+
+ /* bump the mci instance's kobject's ref count */
+ kobj = kobject_get(&mci->edac_mci_kobj);
+ if (!kobj) {
+ err = -ENODEV;
+ goto err_out;
+ }
/* Instanstiate the csrow object */
err = kobject_register(&csrow->kobj);
- if (!err) {
- /* Create the dyanmic attribute files on this csrow,
- * namely, the DIMM labels and the channel ce_count
- */
- for (chan = 0; chan < csrow->nr_channels; chan++) {
- err = edac_create_channel_files(&csrow->kobj, chan);
- if (err)
- break;
+ if (err)
+ goto err_release_top_kobj;
+
+ /* At this point, to release a csrow kobj, one must
+ * call the kobject_unregister and allow that tear down
+ * to work the releasing
+ */
+
+ /* Create the dyanmic attribute files on this csrow,
+ * namely, the DIMM labels and the channel ce_count
+ */
+ for (chan = 0; chan < csrow->nr_channels; chan++) {
+ err = edac_create_channel_files(&csrow->kobj, chan);
+ if (err) {
+ /* special case the unregister here */
+ kobject_unregister(&csrow->kobj);
+ goto err_out;
}
}
-error_exit:
+ return 0;
+
+ /* error unwind stack */
+err_release_top_kobj:
+ kobject_put(&mci->edac_mci_kobj);
+
+err_out:
return err;
}
@@ -688,6 +563,7 @@ static ssize_t mcidev_store(struct kobject *kobj, struct attribute *attr,
return -EIO;
}
+/* Intermediate show/store table */
static struct sysfs_ops mci_ops = {
.show = mcidev_show,
.store = mcidev_store
@@ -729,32 +605,213 @@ static struct mcidev_sysfs_attribute *mci_attr[] = {
NULL
};
+
/*
* Release of a MC controlling instance
+ *
+ * each MC control instance has the following resources upon entry:
+ * a) a ref count on the top memctl kobj
+ * b) a ref count on this module
+ *
+ * this function must decrement those ref counts and then
+ * issue a free on the instance's memory
*/
-static void edac_mci_instance_release(struct kobject *kobj)
+static void edac_mci_control_release(struct kobject *kobj)
{
struct mem_ctl_info *mci;
mci = to_mci(kobj);
- debugf0("%s() idx=%d\n", __func__, mci->mc_idx);
- complete(&mci->kobj_complete);
+
+ debugf0("%s() mci instance idx=%d releasing\n", __func__, mci->mc_idx);
+
+ /* decrement the module ref count */
+ module_put(mci->owner);
+
+ /* free the mci instance memory here */
+ kfree(mci);
}
static struct kobj_type ktype_mci = {
- .release = edac_mci_instance_release,
+ .release = edac_mci_control_release,
.sysfs_ops = &mci_ops,
.default_attrs = (struct attribute **)mci_attr,
};
+/* show/store, tables, etc for the MC kset */
+
+
+struct memctrl_dev_attribute {
+ struct attribute attr;
+ void *value;
+ ssize_t(*show) (void *, char *);
+ ssize_t(*store) (void *, const char *, size_t);
+};
+
+/* Set of show/store abstract level functions for memory control object */
+static ssize_t memctrl_dev_show(struct kobject *kobj,
+ struct attribute *attr, char *buffer)
+{
+ struct memctrl_dev_attribute *memctrl_dev;
+ memctrl_dev = (struct memctrl_dev_attribute *)attr;
+
+ if (memctrl_dev->show)
+ return memctrl_dev->show(memctrl_dev->value, buffer);
+
+ return -EIO;
+}
+
+static ssize_t memctrl_dev_store(struct kobject *kobj, struct attribute *attr,
+ const char *buffer, size_t count)
+{
+ struct memctrl_dev_attribute *memctrl_dev;
+ memctrl_dev = (struct memctrl_dev_attribute *)attr;
+
+ if (memctrl_dev->store)
+ return memctrl_dev->store(memctrl_dev->value, buffer, count);
+
+ return -EIO;
+}
+
+static struct sysfs_ops memctrlfs_ops = {
+ .show = memctrl_dev_show,
+ .store = memctrl_dev_store
+};
+
+#define MEMCTRL_ATTR(_name, _mode, _show, _store) \
+static struct memctrl_dev_attribute attr_##_name = { \
+ .attr = {.name = __stringify(_name), .mode = _mode }, \
+ .value = &_name, \
+ .show = _show, \
+ .store = _store, \
+};
+
+#define MEMCTRL_STRING_ATTR(_name, _data, _mode, _show, _store) \
+static struct memctrl_dev_attribute attr_##_name = { \
+ .attr = {.name = __stringify(_name), .mode = _mode }, \
+ .value = _data, \
+ .show = _show, \
+ .store = _store, \
+};
+
+/* csrow<id> control files */
+MEMCTRL_ATTR(edac_mc_panic_on_ue,
+ S_IRUGO | S_IWUSR, memctrl_int_show, memctrl_int_store);
+
+MEMCTRL_ATTR(edac_mc_log_ue,
+ S_IRUGO | S_IWUSR, memctrl_int_show, memctrl_int_store);
+
+MEMCTRL_ATTR(edac_mc_log_ce,
+ S_IRUGO | S_IWUSR, memctrl_int_show, memctrl_int_store);
+
+MEMCTRL_ATTR(edac_mc_poll_msec,
+ S_IRUGO | S_IWUSR, memctrl_int_show, memctrl_int_store);
+
+/* Base Attributes of the memory ECC object */
+static struct memctrl_dev_attribute *memctrl_attr[] = {
+ &attr_edac_mc_panic_on_ue,
+ &attr_edac_mc_log_ue,
+ &attr_edac_mc_log_ce,
+ &attr_edac_mc_poll_msec,
+ NULL,
+};
+
+
+/* the ktype for the mc_kset internal kobj */
+static struct kobj_type ktype_mc_set_attribs = {
+ .sysfs_ops = &memctrlfs_ops,
+ .default_attrs = (struct attribute **)memctrl_attr,
+};
+
+/* EDAC memory controller sysfs kset:
+ * /sys/devices/system/edac/mc
+ */
+static struct kset mc_kset = {
+ .kobj = {.name = "mc", .ktype = &ktype_mc_set_attribs },
+ .ktype = &ktype_mci,
+};
+
+
+/*
+ * edac_mc_register_sysfs_main_kobj
+ *
+ * setups and registers the main kobject for each mci
+ */
+int edac_mc_register_sysfs_main_kobj(struct mem_ctl_info *mci)
+{
+ struct kobject *kobj_mci;
+ int err;
+
+ debugf1("%s()\n", __func__);
+
+ kobj_mci = &mci->edac_mci_kobj;
+
+ /* Init the mci's kobject */
+ memset(kobj_mci, 0, sizeof(*kobj_mci));
+
+ /* this instance become part of the mc_kset */
+ kobj_mci->kset = &mc_kset;
+
+ /* set the name of the mc<id> object */
+ err = kobject_set_name(kobj_mci, "mc%d", mci->mc_idx);
+ if (err)
+ goto fail_out;
+
+ /* Record which module 'owns' this control structure
+ * and bump the ref count of the module
+ */
+ mci->owner = THIS_MODULE;
+
+ /* bump ref count on this module */
+ if (!try_module_get(mci->owner)) {
+ err = -ENODEV;
+ goto fail_out;
+ }
+
+ /* register the mc<id> kobject to the mc_kset */
+ err = kobject_register(kobj_mci);
+ if (err) {
+ debugf1("%s()Failed to register '.../edac/mc%d'\n",
+ __func__, mci->mc_idx);
+ goto kobj_reg_fail;
+ }
+
+ /* At this point, to 'free' the control struct,
+ * edac_mc_unregister_sysfs_main_kobj() must be used
+ */
+
+ debugf1("%s() Registered '.../edac/mc%d' kobject\n",
+ __func__, mci->mc_idx);
+
+ return 0;
+
+ /* Error exit stack */
+
+kobj_reg_fail:
+ module_put(mci->owner);
+
+fail_out:
+ return err;
+}
+
+/*
+ * edac_mc_register_sysfs_main_kobj
+ *
+ * tears down and the main mci kobject from the mc_kset
+ */
+void edac_mc_unregister_sysfs_main_kobj(struct mem_ctl_info *mci)
+{
+ /* delete the kobj from the mc_kset */
+ kobject_unregister(&mci->edac_mci_kobj);
+}
+
#define EDAC_DEVICE_SYMLINK "device"
/*
- * edac_create_driver_attributes
+ * edac_create_mci_instance_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)
+static int edac_create_mci_instance_attributes(struct mem_ctl_info *mci)
{
int err;
struct mcidev_sysfs_attribute *sysfs_attrib;
@@ -764,7 +821,7 @@ static int edac_create_driver_attributes(struct mem_ctl_info *mci)
*/
sysfs_attrib = mci->mc_driver_sysfs_attributes;
- while (sysfs_attrib->attr.name != NULL) {
+ while (sysfs_attrib && sysfs_attrib->attr.name) {
err = sysfs_create_file(&mci->edac_mci_kobj,
(struct attribute*) sysfs_attrib);
if (err) {
@@ -778,6 +835,29 @@ static int edac_create_driver_attributes(struct mem_ctl_info *mci)
}
/*
+ * edac_remove_mci_instance_attributes
+ * remove MC driver specific attributes at the topmost level
+ * directory of this mci instance.
+ */
+static void edac_remove_mci_instance_attributes(struct mem_ctl_info *mci)
+{
+ 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;
+
+ /* loop if there are attributes and until we hit a NULL entry */
+ while (sysfs_attrib && sysfs_attrib->attr.name) {
+ sysfs_remove_file(&mci->edac_mci_kobj,
+ (struct attribute *) sysfs_attrib);
+ sysfs_attrib++;
+ }
+}
+
+
+/*
* Create a new Memory Controller kobject instance,
* mc<id> under the 'mc' directory
*
@@ -790,51 +870,43 @@ int edac_create_sysfs_mci_device(struct mem_ctl_info *mci)
int i;
int err;
struct csrow_info *csrow;
- struct kobject *edac_mci_kobj = &mci->edac_mci_kobj;
+ struct kobject *kobj_mci = &mci->edac_mci_kobj;
debugf0("%s() idx=%d\n", __func__, mci->mc_idx);
- memset(edac_mci_kobj, 0, sizeof(*edac_mci_kobj));
-
- /* set the name of the mc<id> object */
- err = kobject_set_name(edac_mci_kobj, "mc%d", mci->mc_idx);
- if (err)
- return err;
-
- /* link to our parent the '..../edac/mc' object */
- edac_mci_kobj->parent = &edac_memctrl_kobj;
- edac_mci_kobj->ktype = &ktype_mci;
-
- /* register the mc<id> kobject */
- err = kobject_register(edac_mci_kobj);
- if (err)
- return err;
/* create a symlink for the device */
- err = sysfs_create_link(edac_mci_kobj, &mci->dev->kobj,
+ err = sysfs_create_link(kobj_mci, &mci->dev->kobj,
EDAC_DEVICE_SYMLINK);
- if (err)
+ if (err) {
+ debugf1("%s() failure to create symlink\n", __func__);
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)
+ err = edac_create_mci_instance_attributes(mci);
+ if (err) {
+ debugf1("%s() failure to create mci attributes\n",
+ __func__);
goto fail0;
+ }
}
- /* Make directories for each CSROW object
- * under the mc<id> kobject
+ /* Make directories for each CSROW object under the mc<id> kobject
*/
for (i = 0; i < mci->nr_csrows; i++) {
csrow = &mci->csrows[i];
/* Only expose populated CSROWs */
if (csrow->nr_pages > 0) {
- err = edac_create_csrow_object(edac_mci_kobj, csrow, i);
- if (err)
+ err = edac_create_csrow_object(mci, csrow, i);
+ if (err) {
+ debugf1("%s() failure: create csrow %d obj\n",
+ __func__, i);
goto fail1;
+ }
}
}
@@ -844,16 +916,17 @@ int edac_create_sysfs_mci_device(struct mem_ctl_info *mci)
fail1:
for (i--; i >= 0; i--) {
if (csrow->nr_pages > 0) {
- init_completion(&csrow->kobj_complete);
kobject_unregister(&mci->csrows[i].kobj);
- wait_for_completion(&csrow->kobj_complete);
}
}
+ /* remove the mci instance's attributes, if any */
+ edac_remove_mci_instance_attributes(mci);
+
+ /* remove the symlink */
+ sysfs_remove_link(kobj_mci, EDAC_DEVICE_SYMLINK);
+
fail0:
- init_completion(&mci->kobj_complete);
- kobject_unregister(edac_mci_kobj);
- wait_for_completion(&mci->kobj_complete);
return err;
}
@@ -869,14 +942,83 @@ void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci)
/* remove all csrow kobjects */
for (i = 0; i < mci->nr_csrows; i++) {
if (mci->csrows[i].nr_pages > 0) {
- init_completion(&mci->csrows[i].kobj_complete);
+ debugf0("%s() unreg csrow-%d\n", __func__, i);
kobject_unregister(&mci->csrows[i].kobj);
- wait_for_completion(&mci->csrows[i].kobj_complete);
}
}
+ debugf0("%s() remove_link\n", __func__);
+
+ /* remove the symlink */
sysfs_remove_link(&mci->edac_mci_kobj, EDAC_DEVICE_SYMLINK);
- init_completion(&mci->kobj_complete);
+
+ debugf0("%s() remove_mci_instance\n", __func__);
+
+ /* remove this mci instance's attribtes */
+ edac_remove_mci_instance_attributes(mci);
+
+ debugf0("%s() unregister this mci kobj\n", __func__);
+
+ /* unregister this instance's kobject */
kobject_unregister(&mci->edac_mci_kobj);
- wait_for_completion(&mci->kobj_complete);
}
+
+
+
+
+/*
+ * edac_setup_sysfs_mc_kset(void)
+ *
+ * Initialize the mc_kset for the 'mc' entry
+ * This requires creating the top 'mc' directory with a kset
+ * and its controls/attributes.
+ *
+ * To this 'mc' kset, instance 'mci' will be grouped as children.
+ *
+ * Return: 0 SUCCESS
+ * !0 FAILURE error code
+ */
+int edac_sysfs_setup_mc_kset(void)
+{
+ int err = 0;
+ struct sysdev_class *edac_class;
+
+ debugf1("%s()\n", __func__);
+
+ /* get the /sys/devices/system/edac class reference */
+ edac_class = edac_get_edac_class();
+ if (edac_class == NULL) {
+ debugf1("%s() no edac_class error=%d\n", __func__, err);
+ goto fail_out;
+ }
+
+ /* Init the MC's kobject */
+ mc_kset.kobj.parent = &edac_class->kset.kobj;
+
+ /* register the mc_kset */
+ err = kset_register(&mc_kset);
+ if (err) {
+ debugf1("%s() Failed to register '.../edac/mc'\n", __func__);
+ goto fail_out;
+ }
+
+ debugf1("%s() Registered '.../edac/mc' kobject\n", __func__);
+
+ return 0;
+
+
+ /* error unwind stack */
+fail_out:
+ return err;
+}
+
+/*
+ * edac_sysfs_teardown_mc_kset
+ *
+ * deconstruct the mc_ket for memory controllers
+ */
+void edac_sysfs_teardown_mc_kset(void)
+{
+ kset_unregister(&mc_kset);
+}
+
diff --git a/drivers/edac/edac_module.c b/drivers/edac/edac_module.c
index 07bd16564780..fc32bbb9405e 100644
--- a/drivers/edac/edac_module.c
+++ b/drivers/edac/edac_module.c
@@ -14,11 +14,11 @@
#include "edac_core.h"
#include "edac_module.h"
-#define EDAC_MC_VERSION "Ver: 2.0.4 " __DATE__
+#define EDAC_MC_VERSION "Ver: 2.0.5 " __DATE__
#ifdef CONFIG_EDAC_DEBUG
/* Values of 0 to 4 will generate output */
-int edac_debug_level = 1;
+int edac_debug_level = 2;
EXPORT_SYMBOL_GPL(edac_debug_level);
#endif
@@ -153,7 +153,7 @@ static int __init edac_init(void)
edac_pci_clear_parity_errors();
/*
- * perform the registration of the /sys/devices/system/edac object
+ * perform the registration of the /sys/devices/system/edac class object
*/
if (edac_register_sysfs_edac_name()) {
edac_printk(KERN_ERR, EDAC_MC,
@@ -162,29 +162,29 @@ static int __init edac_init(void)
goto error;
}
- /* Create the MC sysfs entries, must be first
+ /*
+ * now set up the mc_kset under the edac class object
*/
- if (edac_sysfs_memctrl_setup()) {
- edac_printk(KERN_ERR, EDAC_MC,
- "Error initializing sysfs code\n");
- err = -ENODEV;
- goto error_sysfs;
- }
+ err = edac_sysfs_setup_mc_kset();
+ if (err)
+ goto sysfs_setup_fail;
- /* Setup/Initialize the edac_device system */
+ /* Setup/Initialize the workq for this core */
err = edac_workqueue_setup();
if (err) {
edac_printk(KERN_ERR, EDAC_MC, "init WorkQueue failure\n");
- goto error_mem;
+ goto workq_fail;
}
return 0;
/* Error teardown stack */
-error_mem:
- edac_sysfs_memctrl_teardown();
-error_sysfs:
+workq_fail:
+ edac_sysfs_teardown_mc_kset();
+
+sysfs_setup_fail:
edac_unregister_sysfs_edac_name();
+
error:
return err;
}
@@ -199,7 +199,7 @@ static void __exit edac_exit(void)
/* tear down the various subsystems */
edac_workqueue_teardown();
- edac_sysfs_memctrl_teardown();
+ edac_sysfs_teardown_mc_kset();
edac_unregister_sysfs_edac_name();
}
diff --git a/drivers/edac/edac_module.h b/drivers/edac/edac_module.h
index 37a08aa87d3e..6368cc658fc6 100644
--- a/drivers/edac/edac_module.h
+++ b/drivers/edac/edac_module.h
@@ -18,11 +18,15 @@
* INTERNAL EDAC MODULE:
* EDAC memory controller sysfs create/remove functions
* and setup/teardown functions
+ *
+ * edac_mc objects
*/
+extern int edac_sysfs_setup_mc_kset(void);
+extern void edac_sysfs_teardown_mc_kset(void);
+extern int edac_mc_register_sysfs_main_kobj(struct mem_ctl_info *mci);
+extern void edac_mc_unregister_sysfs_main_kobj(struct mem_ctl_info *mci);
extern int edac_create_sysfs_mci_device(struct mem_ctl_info *mci);
extern void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci);
-extern int edac_sysfs_memctrl_setup(void);
-extern void edac_sysfs_memctrl_teardown(void);
extern void edac_check_mc_devices(void);
extern int edac_get_log_ue(void);
extern int edac_get_log_ce(void);