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-rw-r--r--drivers/block/pktcdvd.c275
1 files changed, 134 insertions, 141 deletions
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 713b7dcf39f9..2b6b70a39e76 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -113,57 +113,10 @@ static sector_t get_zone(sector_t sector, struct pktcdvd_device *pd)
return (sector + pd->offset) & ~(sector_t)(pd->settings.size - 1);
}
-/*
- * create and register a pktcdvd kernel object.
- */
-static struct pktcdvd_kobj* pkt_kobj_create(struct pktcdvd_device *pd,
- const char* name,
- struct kobject* parent,
- struct kobj_type* ktype)
-{
- struct pktcdvd_kobj *p;
- int error;
-
- p = kzalloc(sizeof(*p), GFP_KERNEL);
- if (!p)
- return NULL;
- p->pd = pd;
- error = kobject_init_and_add(&p->kobj, ktype, parent, "%s", name);
- if (error) {
- kobject_put(&p->kobj);
- return NULL;
- }
- kobject_uevent(&p->kobj, KOBJ_ADD);
- return p;
-}
-/*
- * remove a pktcdvd kernel object.
- */
-static void pkt_kobj_remove(struct pktcdvd_kobj *p)
-{
- if (p)
- kobject_put(&p->kobj);
-}
-/*
- * default release function for pktcdvd kernel objects.
- */
-static void pkt_kobj_release(struct kobject *kobj)
-{
- kfree(to_pktcdvdkobj(kobj));
-}
-
-
/**********************************************************
- *
* sysfs interface for pktcdvd
* by (C) 2006 Thomas Maier <balagi@justmail.de>
- *
- **********************************************************/
-
-#define DEF_ATTR(_obj,_name,_mode) \
- static struct attribute _obj = { .name = _name, .mode = _mode }
-
-/**********************************************************
+
/sys/class/pktcdvd/pktcdvd[0-7]/
stat/reset
stat/packets_started
@@ -176,75 +129,94 @@ static void pkt_kobj_release(struct kobject *kobj)
write_queue/congestion_on
**********************************************************/
-DEF_ATTR(kobj_pkt_attr_st1, "reset", 0200);
-DEF_ATTR(kobj_pkt_attr_st2, "packets_started", 0444);
-DEF_ATTR(kobj_pkt_attr_st3, "packets_finished", 0444);
-DEF_ATTR(kobj_pkt_attr_st4, "kb_written", 0444);
-DEF_ATTR(kobj_pkt_attr_st5, "kb_read", 0444);
-DEF_ATTR(kobj_pkt_attr_st6, "kb_read_gather", 0444);
-
-static struct attribute *kobj_pkt_attrs_stat[] = {
- &kobj_pkt_attr_st1,
- &kobj_pkt_attr_st2,
- &kobj_pkt_attr_st3,
- &kobj_pkt_attr_st4,
- &kobj_pkt_attr_st5,
- &kobj_pkt_attr_st6,
- NULL
-};
+static ssize_t packets_started_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct pktcdvd_device *pd = dev_get_drvdata(dev);
-DEF_ATTR(kobj_pkt_attr_wq1, "size", 0444);
-DEF_ATTR(kobj_pkt_attr_wq2, "congestion_off", 0644);
-DEF_ATTR(kobj_pkt_attr_wq3, "congestion_on", 0644);
+ return sysfs_emit(buf, "%lu\n", pd->stats.pkt_started);
+}
+static DEVICE_ATTR_RO(packets_started);
-static struct attribute *kobj_pkt_attrs_wqueue[] = {
- &kobj_pkt_attr_wq1,
- &kobj_pkt_attr_wq2,
- &kobj_pkt_attr_wq3,
- NULL
-};
+static ssize_t packets_finished_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct pktcdvd_device *pd = dev_get_drvdata(dev);
-static ssize_t kobj_pkt_show(struct kobject *kobj,
- struct attribute *attr, char *data)
+ return sysfs_emit(buf, "%lu\n", pd->stats.pkt_ended);
+}
+static DEVICE_ATTR_RO(packets_finished);
+
+static ssize_t kb_written_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
- struct pktcdvd_device *pd = to_pktcdvdkobj(kobj)->pd;
- int n = 0;
- int v;
- if (strcmp(attr->name, "packets_started") == 0) {
- n = sprintf(data, "%lu\n", pd->stats.pkt_started);
+ struct pktcdvd_device *pd = dev_get_drvdata(dev);
- } else if (strcmp(attr->name, "packets_finished") == 0) {
- n = sprintf(data, "%lu\n", pd->stats.pkt_ended);
+ return sysfs_emit(buf, "%lu\n", pd->stats.secs_w >> 1);
+}
+static DEVICE_ATTR_RO(kb_written);
- } else if (strcmp(attr->name, "kb_written") == 0) {
- n = sprintf(data, "%lu\n", pd->stats.secs_w >> 1);
+static ssize_t kb_read_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct pktcdvd_device *pd = dev_get_drvdata(dev);
- } else if (strcmp(attr->name, "kb_read") == 0) {
- n = sprintf(data, "%lu\n", pd->stats.secs_r >> 1);
+ return sysfs_emit(buf, "%lu\n", pd->stats.secs_r >> 1);
+}
+static DEVICE_ATTR_RO(kb_read);
- } else if (strcmp(attr->name, "kb_read_gather") == 0) {
- n = sprintf(data, "%lu\n", pd->stats.secs_rg >> 1);
+static ssize_t kb_read_gather_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct pktcdvd_device *pd = dev_get_drvdata(dev);
- } else if (strcmp(attr->name, "size") == 0) {
- spin_lock(&pd->lock);
- v = pd->bio_queue_size;
- spin_unlock(&pd->lock);
- n = sprintf(data, "%d\n", v);
+ return sysfs_emit(buf, "%lu\n", pd->stats.secs_rg >> 1);
+}
+static DEVICE_ATTR_RO(kb_read_gather);
- } else if (strcmp(attr->name, "congestion_off") == 0) {
- spin_lock(&pd->lock);
- v = pd->write_congestion_off;
- spin_unlock(&pd->lock);
- n = sprintf(data, "%d\n", v);
+static ssize_t reset_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t len)
+{
+ struct pktcdvd_device *pd = dev_get_drvdata(dev);
- } else if (strcmp(attr->name, "congestion_on") == 0) {
- spin_lock(&pd->lock);
- v = pd->write_congestion_on;
- spin_unlock(&pd->lock);
- n = sprintf(data, "%d\n", v);
+ if (len > 0) {
+ pd->stats.pkt_started = 0;
+ pd->stats.pkt_ended = 0;
+ pd->stats.secs_w = 0;
+ pd->stats.secs_rg = 0;
+ pd->stats.secs_r = 0;
}
+ return len;
+}
+static DEVICE_ATTR_WO(reset);
+
+static struct attribute *pkt_stat_attrs[] = {
+ &dev_attr_packets_finished.attr,
+ &dev_attr_packets_started.attr,
+ &dev_attr_kb_read.attr,
+ &dev_attr_kb_written.attr,
+ &dev_attr_kb_read_gather.attr,
+ &dev_attr_reset.attr,
+ NULL,
+};
+
+static const struct attribute_group pkt_stat_group = {
+ .name = "stat",
+ .attrs = pkt_stat_attrs,
+};
+
+static ssize_t size_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct pktcdvd_device *pd = dev_get_drvdata(dev);
+ int n;
+
+ spin_lock(&pd->lock);
+ n = sysfs_emit(buf, "%d\n", pd->bio_queue_size);
+ spin_unlock(&pd->lock);
return n;
}
+static DEVICE_ATTR_RO(size);
static void init_write_congestion_marks(int* lo, int* hi)
{
@@ -263,30 +235,56 @@ static void init_write_congestion_marks(int* lo, int* hi)
}
}
-static ssize_t kobj_pkt_store(struct kobject *kobj,
- struct attribute *attr,
- const char *data, size_t len)
+static ssize_t congestion_off_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
- struct pktcdvd_device *pd = to_pktcdvdkobj(kobj)->pd;
- int val;
+ struct pktcdvd_device *pd = dev_get_drvdata(dev);
+ int n;
- if (strcmp(attr->name, "reset") == 0 && len > 0) {
- pd->stats.pkt_started = 0;
- pd->stats.pkt_ended = 0;
- pd->stats.secs_w = 0;
- pd->stats.secs_rg = 0;
- pd->stats.secs_r = 0;
+ spin_lock(&pd->lock);
+ n = sysfs_emit(buf, "%d\n", pd->write_congestion_off);
+ spin_unlock(&pd->lock);
+ return n;
+}
+
+static ssize_t congestion_off_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t len)
+{
+ struct pktcdvd_device *pd = dev_get_drvdata(dev);
+ int val;
- } else if (strcmp(attr->name, "congestion_off") == 0
- && sscanf(data, "%d", &val) == 1) {
+ if (sscanf(buf, "%d", &val) == 1) {
spin_lock(&pd->lock);
pd->write_congestion_off = val;
init_write_congestion_marks(&pd->write_congestion_off,
&pd->write_congestion_on);
spin_unlock(&pd->lock);
+ }
+ return len;
+}
+static DEVICE_ATTR_RW(congestion_off);
+
+static ssize_t congestion_on_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct pktcdvd_device *pd = dev_get_drvdata(dev);
+ int n;
- } else if (strcmp(attr->name, "congestion_on") == 0
- && sscanf(data, "%d", &val) == 1) {
+ spin_lock(&pd->lock);
+ n = sysfs_emit(buf, "%d\n", pd->write_congestion_on);
+ spin_unlock(&pd->lock);
+ return n;
+}
+
+static ssize_t congestion_on_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t len)
+{
+ struct pktcdvd_device *pd = dev_get_drvdata(dev);
+ int val;
+
+ if (sscanf(buf, "%d", &val) == 1) {
spin_lock(&pd->lock);
pd->write_congestion_on = val;
init_write_congestion_marks(&pd->write_congestion_off,
@@ -295,44 +293,39 @@ static ssize_t kobj_pkt_store(struct kobject *kobj,
}
return len;
}
+static DEVICE_ATTR_RW(congestion_on);
-static const struct sysfs_ops kobj_pkt_ops = {
- .show = kobj_pkt_show,
- .store = kobj_pkt_store
+static struct attribute *pkt_wq_attrs[] = {
+ &dev_attr_congestion_on.attr,
+ &dev_attr_congestion_off.attr,
+ &dev_attr_size.attr,
+ NULL,
};
-static struct kobj_type kobj_pkt_type_stat = {
- .release = pkt_kobj_release,
- .sysfs_ops = &kobj_pkt_ops,
- .default_attrs = kobj_pkt_attrs_stat
+
+static const struct attribute_group pkt_wq_group = {
+ .name = "write_queue",
+ .attrs = pkt_wq_attrs,
};
-static struct kobj_type kobj_pkt_type_wqueue = {
- .release = pkt_kobj_release,
- .sysfs_ops = &kobj_pkt_ops,
- .default_attrs = kobj_pkt_attrs_wqueue
+
+static const struct attribute_group *pkt_groups[] = {
+ &pkt_stat_group,
+ &pkt_wq_group,
+ NULL,
};
static void pkt_sysfs_dev_new(struct pktcdvd_device *pd)
{
if (class_pktcdvd) {
- pd->dev = device_create(class_pktcdvd, NULL, MKDEV(0, 0), NULL,
- "%s", pd->name);
+ pd->dev = device_create_with_groups(class_pktcdvd, NULL,
+ MKDEV(0, 0), pd, pkt_groups,
+ "%s", pd->name);
if (IS_ERR(pd->dev))
pd->dev = NULL;
}
- if (pd->dev) {
- pd->kobj_stat = pkt_kobj_create(pd, "stat",
- &pd->dev->kobj,
- &kobj_pkt_type_stat);
- pd->kobj_wqueue = pkt_kobj_create(pd, "write_queue",
- &pd->dev->kobj,
- &kobj_pkt_type_wqueue);
- }
}
static void pkt_sysfs_dev_remove(struct pktcdvd_device *pd)
{
- pkt_kobj_remove(pd->kobj_stat);
- pkt_kobj_remove(pd->kobj_wqueue);
if (class_pktcdvd)
device_unregister(pd->dev);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-26 14:59:13 +0000