xfs: create global stats and stats_clear in sysfs
Currently, xfs global stats are in procfs. This patch introduces
(replicates) the global stats in sysfs. Additionally a stats_clear file
is introduced in sysfs.
Signed-off-by: Bill O'Donnell <billodo@redhat.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 904f637c..0dfc53b 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -61,6 +61,7 @@
mempool_t *xfs_ioend_pool;
static struct kset *xfs_kset; /* top-level xfs sysfs dir */
+static struct xfs_kobj xfs_stats_kobj; /* global stats sysfs attrs */
#ifdef DEBUG
static struct xfs_kobj xfs_dbg_kobj; /* global debug sysfs attrs */
#endif
@@ -1838,19 +1839,25 @@
xfs_kset = kset_create_and_add("xfs", NULL, fs_kobj);
if (!xfs_kset) {
error = -ENOMEM;
- goto out_sysctl_unregister;;
+ goto out_sysctl_unregister;
}
+ xfs_stats_kobj.kobject.kset = xfs_kset;
+ error = xfs_sysfs_init(&xfs_stats_kobj, &xfs_stats_ktype, NULL,
+ "stats");
+ if (error)
+ goto out_kset_unregister;
+
#ifdef DEBUG
xfs_dbg_kobj.kobject.kset = xfs_kset;
error = xfs_sysfs_init(&xfs_dbg_kobj, &xfs_dbg_ktype, NULL, "debug");
if (error)
- goto out_kset_unregister;
+ goto out_remove_stats_kobj;
#endif
error = xfs_qm_init();
if (error)
- goto out_remove_kobj;
+ goto out_remove_dbg_kobj;
error = register_filesystem(&xfs_fs_type);
if (error)
@@ -1859,11 +1866,13 @@
out_qm_exit:
xfs_qm_exit();
- out_remove_kobj:
+ out_remove_dbg_kobj:
#ifdef DEBUG
xfs_sysfs_del(&xfs_dbg_kobj);
- out_kset_unregister:
+ out_remove_stats_kobj:
#endif
+ xfs_sysfs_del(&xfs_stats_kobj);
+ out_kset_unregister:
kset_unregister(xfs_kset);
out_sysctl_unregister:
xfs_sysctl_unregister();
@@ -1889,6 +1898,7 @@
#ifdef DEBUG
xfs_sysfs_del(&xfs_dbg_kobj);
#endif
+ xfs_sysfs_del(&xfs_stats_kobj);
kset_unregister(xfs_kset);
xfs_sysctl_unregister();
xfs_cleanup_procfs();