[PATCH 4/4] xfs: consolidate sysfs ops (dbg, stats, log)

Bill O'Donnell
2015-09-08T17:50:29Z

As a part of the series to move xfs global stats from procfs to sysfs,
this patch consolidates the sysfs ops functions and removes redundancy.

Signed-off-by: Bill O'Donnell <billodo@redhat.com>
---
fs/xfs/xfs_stats.c | 2 +-
fs/xfs/xfs_sysfs.c | 144 +++++++++++++++++------------------------------------
2 files changed, 48 insertions(+), 98 deletions(-)

diff --git a/fs/xfs/xfs_stats.c b/fs/xfs/xfs_stats.c
index 05d5227..dc6ca67 100644
--- a/fs/xfs/xfs_stats.c
+++ b/fs/xfs/xfs_stats.c
@@ -92,7 +92,7 @@ int xfs_stats_format(char *buf)
0);
#endif

-return len;
+ return len;
}

void xfs_stats_clearall(void)
diff --git a/fs/xfs/xfs_sysfs.c b/fs/xfs/xfs_sysfs.c
index a094e20..6fd597b 100644
--- a/fs/xfs/xfs_sysfs.c
+++ b/fs/xfs/xfs_sysfs.c
@@ -54,6 +54,50 @@ struct kobj_type xfs_mp_ktype = {
.release = xfs_sysfs_release,
};

+static inline struct xlog *
+to_xlog(struct kobject *kobject)
+{
+ struct xfs_kobj *kobj = to_kobj(kobject);
+
+ return container_of(kobj, struct xlog, l_kobj);
+}
+
+STATIC ssize_t
+xfs_sysfs_object_show(
+ struct kobject *kobject,
+ struct attribute *attr,
+ char *buf)
+{
+ struct xfs_sysfs_attr *xfs_attr = to_attr(attr);
+ struct kobj_type *ktype = get_ktype(kobject);
+ void *data = NULL;
+
+ if (ktype == &xfs_log_ktype)
+ data = to_xlog(kobject);
+ return xfs_attr->show ? xfs_attr->show(buf, data) : 0;
+}
+
+STATIC ssize_t
+xfs_sysfs_object_store(
+ struct kobject *kobject,
+ struct attribute *attr,
+ const char *buf,
+ size_t count)
+{
+ struct xfs_sysfs_attr *xfs_attr = to_attr(attr);
+ struct kobj_type *ktype = get_ktype(kobject);
+ void *data = NULL;
+
+ if (ktype == &xfs_log_ktype)
+ data = to_xlog(kobject);
+ return xfs_attr->store ? xfs_attr->store(buf, count, data) : 0;
+}
+
+static const struct sysfs_ops xfs_sysfs_ops = {
+ .show = xfs_sysfs_object_show,
+ .store = xfs_sysfs_object_store,
+};
+
#ifdef DEBUG
/* debug */

@@ -92,43 +136,14 @@ static struct attribute *xfs_dbg_attrs[] = {
NULL,
};

-STATIC ssize_t
-xfs_dbg_show(
- struct kobject *kobject,
- struct attribute *attr,
- char *buf)
-{
- struct xfs_sysfs_attr *xfs_attr = to_attr(attr);
-
- return xfs_attr->show ? xfs_attr->show(buf, NULL) : 0;
-}
-
-STATIC ssize_t
-xfs_dbg_store(
- struct kobject *kobject,
- struct attribute *attr,
- const char *buf,
- size_t count)
-{
- struct xfs_sysfs_attr *xfs_attr = to_attr(attr);
-
- return xfs_attr->store ? xfs_attr->store(buf, count, NULL) : 0;
-}
-
-static struct sysfs_ops xfs_dbg_ops = {
- .show = xfs_dbg_show,
- .store = xfs_dbg_store,
-};
-
struct kobj_type xfs_dbg_ktype = {
.release = xfs_sysfs_release,
- .sysfs_ops = &xfs_dbg_ops,
+ .sysfs_ops = &xfs_sysfs_ops,
.default_attrs = xfs_dbg_attrs,
};

#endif /* DEBUG */

-
/* stats */

STATIC ssize_t
@@ -166,37 +181,9 @@ static struct attribute *xfs_stats_attrs[] = {
NULL,
};

-STATIC ssize_t
-xfs_stats_show(
- struct kobject *kobject,
- struct attribute *attr,
- char *buf)
-{
- struct xfs_sysfs_attr *xfs_attr = to_attr(attr);
-
- return xfs_attr->show ? xfs_attr->show(buf, NULL) : 0;
-}
-
-STATIC ssize_t
-xfs_stats_store(
- struct kobject *kobject,
- struct attribute *attr,
- const char *buf,
- size_t count)
-{
- struct xfs_sysfs_attr *xfs_attr = to_attr(attr);
-
- return xfs_attr->store ? xfs_attr->store(buf, count, NULL) : 0;
-}
-
-static struct sysfs_ops xfs_stats_ops = {
- .show = xfs_stats_show,
- .store = xfs_stats_store,
-};
-
struct kobj_type xfs_stats_ktype = {
.release = xfs_sysfs_release,
- .sysfs_ops = &xfs_stats_ops,
+ .sysfs_ops = &xfs_sysfs_ops,
.default_attrs = xfs_stats_attrs,
};

@@ -270,45 +257,8 @@ static struct attribute *xfs_log_attrs[] = {
NULL,
};

-static inline struct xlog *
-to_xlog(struct kobject *kobject)
-{
- struct xfs_kobj *kobj = to_kobj(kobject);
- return container_of(kobj, struct xlog, l_kobj);
-}
-
-STATIC ssize_t
-xfs_log_show(
- struct kobject *kobject,
- struct attribute *attr,
- char *buf)
-{
- struct xlog *log = to_xlog(kobject);
- struct xfs_sysfs_attr *xfs_attr = to_attr(attr);
-
- return xfs_attr->show ? xfs_attr->show(buf, log) : 0;
-}
-
-STATIC ssize_t
-xfs_log_store(
- struct kobject *kobject,
- struct attribute *attr,
- const char *buf,
- size_t count)
-{
- struct xlog *log = to_xlog(kobject);
- struct xfs_sysfs_attr *xfs_attr = to_attr(attr);
-
- return xfs_attr->store ? xfs_attr->store(buf, count, log) : 0;
-}
-
-static struct sysfs_ops xfs_log_ops = {
- .show = xfs_log_show,
- .store = xfs_log_store,
-};
-
struct kobj_type xfs_log_ktype = {
.release = xfs_sysfs_release,
- .sysfs_ops = &xfs_log_ops,
+ .sysfs_ops = &xfs_sysfs_ops,
.default_attrs = xfs_log_attrs,
};