From d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 02:45:28 +0000
Subject: [PATCH] add boot partition size
---
kernel/drivers/edac/edac_mc_sysfs.c | 290 ++++++++++++++++++++++-----------------------------------
1 files changed, 111 insertions(+), 179 deletions(-)
diff --git a/kernel/drivers/edac/edac_mc_sysfs.c b/kernel/drivers/edac/edac_mc_sysfs.c
index d4545a9..2f9f1e7 100644
--- a/kernel/drivers/edac/edac_mc_sysfs.c
+++ b/kernel/drivers/edac/edac_mc_sysfs.c
@@ -131,7 +131,7 @@
struct dev_ch_attribute {
struct device_attribute attr;
- int channel;
+ unsigned int channel;
};
#define DEVICE_CHANNEL(_name, _mode, _show, _store, _var) \
@@ -200,7 +200,7 @@
char *data)
{
struct csrow_info *csrow = to_csrow(dev);
- unsigned chan = to_channel(mattr);
+ unsigned int chan = to_channel(mattr);
struct rank_info *rank = csrow->channels[chan];
/* if field has not been initialized, there is nothing to send */
@@ -216,7 +216,7 @@
const char *data, size_t count)
{
struct csrow_info *csrow = to_csrow(dev);
- unsigned chan = to_channel(mattr);
+ unsigned int chan = to_channel(mattr);
struct rank_info *rank = csrow->channels[chan];
size_t copy_count = count;
@@ -240,7 +240,7 @@
struct device_attribute *mattr, char *data)
{
struct csrow_info *csrow = to_csrow(dev);
- unsigned chan = to_channel(mattr);
+ unsigned int chan = to_channel(mattr);
struct rank_info *rank = csrow->channels[chan];
return sprintf(data, "%u\n", rank->ce_count);
@@ -274,17 +274,8 @@
NULL
};
-static void csrow_attr_release(struct device *dev)
-{
- struct csrow_info *csrow = container_of(dev, struct csrow_info, dev);
-
- edac_dbg(1, "Releasing csrow device %s\n", dev_name(dev));
- kfree(csrow);
-}
-
static const struct device_type csrow_attr_type = {
.groups = csrow_attr_groups,
- .release = csrow_attr_release,
};
/*
@@ -390,6 +381,14 @@
NULL
};
+static void csrow_release(struct device *dev)
+{
+ /*
+ * Nothing to do, just unregister sysfs here. The mci
+ * device owns the data and will also release it.
+ */
+}
+
static inline int nr_pages_per_csrow(struct csrow_info *csrow)
{
int chan, nr_pages = 0;
@@ -407,22 +406,24 @@
int err;
csrow->dev.type = &csrow_attr_type;
- csrow->dev.bus = mci->bus;
csrow->dev.groups = csrow_dev_groups;
+ csrow->dev.release = csrow_release;
device_initialize(&csrow->dev);
csrow->dev.parent = &mci->dev;
csrow->mci = mci;
dev_set_name(&csrow->dev, "csrow%d", index);
dev_set_drvdata(&csrow->dev, csrow);
- edac_dbg(0, "creating (virtual) csrow node %s\n",
- dev_name(&csrow->dev));
-
err = device_add(&csrow->dev);
- if (err)
+ if (err) {
+ edac_dbg(1, "failure: create device %s\n", dev_name(&csrow->dev));
put_device(&csrow->dev);
+ return err;
+ }
- return err;
+ edac_dbg(0, "device %s created\n", dev_name(&csrow->dev));
+
+ return 0;
}
/* Create a CSROW object under specifed edac_mc_device */
@@ -436,21 +437,15 @@
if (!nr_pages_per_csrow(csrow))
continue;
err = edac_create_csrow_object(mci, mci->csrows[i], i);
- if (err < 0) {
- edac_dbg(1,
- "failure: create csrow objects for csrow %d\n",
- i);
+ if (err < 0)
goto error;
- }
}
return 0;
error:
for (--i; i >= 0; i--) {
- csrow = mci->csrows[i];
- if (!nr_pages_per_csrow(csrow))
- continue;
- put_device(&mci->csrows[i]->dev);
+ if (device_is_registered(&mci->csrows[i]->dev))
+ device_unregister(&mci->csrows[i]->dev);
}
return err;
@@ -459,15 +454,13 @@
static void edac_delete_csrow_objects(struct mem_ctl_info *mci)
{
int i;
- struct csrow_info *csrow;
- for (i = mci->nr_csrows - 1; i >= 0; i--) {
- csrow = mci->csrows[i];
- if (!nr_pages_per_csrow(csrow))
- continue;
- device_unregister(&mci->csrows[i]->dev);
+ for (i = 0; i < mci->nr_csrows; i++) {
+ if (device_is_registered(&mci->csrows[i]->dev))
+ device_unregister(&mci->csrows[i]->dev);
}
}
+
#endif
/*
@@ -481,8 +474,12 @@
struct device_attribute *mattr, char *data)
{
struct dimm_info *dimm = to_dimm(dev);
+ ssize_t count;
- return edac_dimm_info_location(dimm, data, PAGE_SIZE);
+ count = edac_dimm_info_location(dimm, data, PAGE_SIZE);
+ count += scnprintf(data + count, PAGE_SIZE - count, "\n");
+
+ return count;
}
static ssize_t dimmdev_label_show(struct device *dev,
@@ -558,16 +555,8 @@
char *data)
{
struct dimm_info *dimm = to_dimm(dev);
- u32 count;
- int off;
- off = EDAC_DIMM_OFF(dimm->mci->layers,
- dimm->mci->n_layers,
- dimm->location[0],
- dimm->location[1],
- dimm->location[2]);
- count = dimm->mci->ce_per_layer[dimm->mci->n_layers-1][off];
- return sprintf(data, "%u\n", count);
+ return sprintf(data, "%u\n", dimm->ce_count);
}
static ssize_t dimmdev_ue_count_show(struct device *dev,
@@ -575,16 +564,8 @@
char *data)
{
struct dimm_info *dimm = to_dimm(dev);
- u32 count;
- int off;
- off = EDAC_DIMM_OFF(dimm->mci->layers,
- dimm->mci->n_layers,
- dimm->location[0],
- dimm->location[1],
- dimm->location[2]);
- count = dimm->mci->ue_per_layer[dimm->mci->n_layers-1][off];
- return sprintf(data, "%u\n", count);
+ return sprintf(data, "%u\n", dimm->ue_count);
}
/* dimm/rank attribute files */
@@ -620,44 +601,53 @@
NULL
};
-static void dimm_attr_release(struct device *dev)
-{
- struct dimm_info *dimm = container_of(dev, struct dimm_info, dev);
-
- edac_dbg(1, "Releasing dimm device %s\n", dev_name(dev));
- kfree(dimm);
-}
-
static const struct device_type dimm_attr_type = {
.groups = dimm_attr_groups,
- .release = dimm_attr_release,
};
+
+static void dimm_release(struct device *dev)
+{
+ /*
+ * Nothing to do, just unregister sysfs here. The mci
+ * device owns the data and will also release it.
+ */
+}
/* Create a DIMM object under specifed memory controller device */
static int edac_create_dimm_object(struct mem_ctl_info *mci,
- struct dimm_info *dimm,
- int index)
+ struct dimm_info *dimm)
{
int err;
dimm->mci = mci;
dimm->dev.type = &dimm_attr_type;
- dimm->dev.bus = mci->bus;
+ dimm->dev.release = dimm_release;
device_initialize(&dimm->dev);
dimm->dev.parent = &mci->dev;
if (mci->csbased)
- dev_set_name(&dimm->dev, "rank%d", index);
+ dev_set_name(&dimm->dev, "rank%d", dimm->idx);
else
- dev_set_name(&dimm->dev, "dimm%d", index);
+ dev_set_name(&dimm->dev, "dimm%d", dimm->idx);
dev_set_drvdata(&dimm->dev, dimm);
pm_runtime_forbid(&mci->dev);
- err = device_add(&dimm->dev);
+ err = device_add(&dimm->dev);
+ if (err) {
+ edac_dbg(1, "failure: create device %s\n", dev_name(&dimm->dev));
+ put_device(&dimm->dev);
+ return err;
+ }
- edac_dbg(0, "creating rank/dimm device %s\n", dev_name(&dimm->dev));
+ if (IS_ENABLED(CONFIG_EDAC_DEBUG)) {
+ char location[80];
- return err;
+ edac_dimm_info_location(dimm, location, sizeof(location));
+ edac_dbg(0, "device %s created at location %s\n",
+ dev_name(&dimm->dev), location);
+ }
+
+ return 0;
}
/*
@@ -671,7 +661,9 @@
const char *data, size_t count)
{
struct mem_ctl_info *mci = to_mci(dev);
- int cnt, row, chan, i;
+ struct dimm_info *dimm;
+ int row, chan;
+
mci->ue_mc = 0;
mci->ce_mc = 0;
mci->ue_noinfo_count = 0;
@@ -687,11 +679,9 @@
ri->channels[chan]->ce_count = 0;
}
- cnt = 1;
- for (i = 0; i < mci->n_layers; i++) {
- cnt *= mci->layers[i].size;
- memset(mci->ce_per_layer[i], 0, cnt * sizeof(u32));
- memset(mci->ue_per_layer[i], 0, cnt * sizeof(u32));
+ mci_for_each_dimm(mci, dimm) {
+ dimm->ue_count = 0;
+ dimm->ce_count = 0;
}
mci->start_time = jiffies;
@@ -827,15 +817,23 @@
char *data)
{
struct mem_ctl_info *mci = to_mci(dev);
- int i;
+ int len = PAGE_SIZE;
char *p = data;
+ int i, n;
for (i = 0; i < mci->n_layers; i++) {
- p += sprintf(p, "%s %d ",
- edac_layer_name[mci->layers[i].type],
- mci->layers[i].size - 1);
+ n = scnprintf(p, len, "%s %d ",
+ edac_layer_name[mci->layers[i].type],
+ mci->layers[i].size - 1);
+ len -= n;
+ if (len <= 0)
+ goto out;
+
+ p += n;
}
+ p += scnprintf(p, len, "\n");
+out:
return p - data;
}
@@ -896,17 +894,8 @@
NULL
};
-static void mci_attr_release(struct device *dev)
-{
- struct mem_ctl_info *mci = container_of(dev, struct mem_ctl_info, dev);
-
- edac_dbg(1, "Releasing csrow device %s\n", dev_name(dev));
- kfree(mci);
-}
-
static const struct device_type mci_attr_type = {
.groups = mci_attr_groups,
- .release = mci_attr_release,
};
/*
@@ -920,93 +909,50 @@
int edac_create_sysfs_mci_device(struct mem_ctl_info *mci,
const struct attribute_group **groups)
{
- char *name;
- int i, err;
-
- /*
- * The memory controller needs its own bus, in order to avoid
- * namespace conflicts at /sys/bus/edac.
- */
- name = kasprintf(GFP_KERNEL, "mc%d", mci->mc_idx);
- if (!name)
- return -ENOMEM;
-
- mci->bus->name = name;
-
- edac_dbg(0, "creating bus %s\n", mci->bus->name);
-
- err = bus_register(mci->bus);
- if (err < 0) {
- kfree(name);
- return err;
- }
+ struct dimm_info *dimm;
+ int err;
/* get the /sys/devices/system/edac subsys reference */
mci->dev.type = &mci_attr_type;
- device_initialize(&mci->dev);
-
mci->dev.parent = mci_pdev;
- mci->dev.bus = mci->bus;
mci->dev.groups = groups;
dev_set_name(&mci->dev, "mc%d", mci->mc_idx);
dev_set_drvdata(&mci->dev, mci);
pm_runtime_forbid(&mci->dev);
- edac_dbg(0, "creating device %s\n", dev_name(&mci->dev));
err = device_add(&mci->dev);
if (err < 0) {
edac_dbg(1, "failure: create device %s\n", dev_name(&mci->dev));
- goto fail_unregister_bus;
+ /* no put_device() here, free mci with _edac_mc_free() */
+ return err;
}
+
+ edac_dbg(0, "device %s created\n", dev_name(&mci->dev));
/*
* Create the dimm/rank devices
*/
- for (i = 0; i < mci->tot_dimms; i++) {
- struct dimm_info *dimm = mci->dimms[i];
+ mci_for_each_dimm(mci, dimm) {
/* Only expose populated DIMMs */
if (!dimm->nr_pages)
continue;
-#ifdef CONFIG_EDAC_DEBUG
- edac_dbg(1, "creating dimm%d, located at ", i);
- if (edac_debug_level >= 1) {
- int lay;
- for (lay = 0; lay < mci->n_layers; lay++)
- printk(KERN_CONT "%s %d ",
- edac_layer_name[mci->layers[lay].type],
- dimm->location[lay]);
- printk(KERN_CONT "\n");
- }
-#endif
- err = edac_create_dimm_object(mci, dimm, i);
- if (err) {
- edac_dbg(1, "failure: create dimm %d obj\n", i);
- goto fail_unregister_dimm;
- }
+ err = edac_create_dimm_object(mci, dimm);
+ if (err)
+ goto fail;
}
#ifdef CONFIG_EDAC_LEGACY_SYSFS
err = edac_create_csrow_objects(mci);
if (err < 0)
- goto fail_unregister_dimm;
+ goto fail;
#endif
edac_create_debugfs_nodes(mci);
return 0;
-fail_unregister_dimm:
- for (i--; i >= 0; i--) {
- struct dimm_info *dimm = mci->dimms[i];
- if (!dimm->nr_pages)
- continue;
-
- device_unregister(&dimm->dev);
- }
- device_unregister(&mci->dev);
-fail_unregister_bus:
- bus_unregister(mci->bus);
- kfree(name);
+fail:
+ edac_remove_sysfs_mci_device(mci);
return err;
}
@@ -1016,7 +962,10 @@
*/
void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci)
{
- int i;
+ struct dimm_info *dimm;
+
+ if (!device_is_registered(&mci->dev))
+ return;
edac_dbg(0, "\n");
@@ -1027,24 +976,15 @@
edac_delete_csrow_objects(mci);
#endif
- for (i = 0; i < mci->tot_dimms; i++) {
- struct dimm_info *dimm = mci->dimms[i];
- if (dimm->nr_pages == 0)
+ mci_for_each_dimm(mci, dimm) {
+ if (!device_is_registered(&dimm->dev))
continue;
- edac_dbg(0, "removing device %s\n", dev_name(&dimm->dev));
+ edac_dbg(1, "unregistering device %s\n", dev_name(&dimm->dev));
device_unregister(&dimm->dev);
}
-}
-void edac_unregister_sysfs(struct mem_ctl_info *mci)
-{
- struct bus_type *bus = mci->bus;
- const char *name = mci->bus->name;
-
- edac_dbg(1, "Unregistering device %s\n", dev_name(&mci->dev));
- device_unregister(&mci->dev);
- bus_unregister(bus);
- kfree(name);
+ /* only remove the device, but keep mci */
+ device_del(&mci->dev);
}
static void mc_attr_release(struct device *dev)
@@ -1054,13 +994,10 @@
* parent device, used to create the /sys/devices/mc sysfs node.
* So, there are no attributes on it.
*/
- edac_dbg(1, "Releasing device %s\n", dev_name(dev));
+ edac_dbg(1, "device %s released\n", dev_name(dev));
kfree(dev);
}
-static const struct device_type mc_attr_type = {
- .release = mc_attr_release,
-};
/*
* Init/exit code for the module. Basically, creates/removes /sys/class/rc
*/
@@ -1069,28 +1006,23 @@
int err;
mci_pdev = kzalloc(sizeof(*mci_pdev), GFP_KERNEL);
- if (!mci_pdev) {
- err = -ENOMEM;
- goto out;
- }
+ if (!mci_pdev)
+ return -ENOMEM;
mci_pdev->bus = edac_get_sysfs_subsys();
- mci_pdev->type = &mc_attr_type;
- device_initialize(mci_pdev);
- dev_set_name(mci_pdev, "mc");
+ mci_pdev->release = mc_attr_release;
+ mci_pdev->init_name = "mc";
- err = device_add(mci_pdev);
- if (err < 0)
- goto out_put_device;
+ err = device_register(mci_pdev);
+ if (err < 0) {
+ edac_dbg(1, "failure: create device %s\n", dev_name(mci_pdev));
+ put_device(mci_pdev);
+ return err;
+ }
edac_dbg(0, "device %s created\n", dev_name(mci_pdev));
return 0;
-
- out_put_device:
- put_device(mci_pdev);
- out:
- return err;
}
void edac_mc_sysfs_exit(void)
--
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