2 * Copyright (c) 2014 Red Hat, Inc.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 #include "xfs_sysfs.h"
21 #include "xfs_log_format.h"
23 #include "xfs_log_priv.h"
24 #include "xfs_stats.h"
26 struct xfs_sysfs_attr {
27 struct attribute attr;
28 ssize_t (*show)(struct kobject *kobject, char *buf);
29 ssize_t (*store)(struct kobject *kobject, const char *buf,
33 static inline struct xfs_sysfs_attr *
34 to_attr(struct attribute *attr)
36 return container_of(attr, struct xfs_sysfs_attr, attr);
39 #define XFS_SYSFS_ATTR_RW(name) \
40 static struct xfs_sysfs_attr xfs_sysfs_attr_##name = __ATTR_RW(name)
41 #define XFS_SYSFS_ATTR_RO(name) \
42 static struct xfs_sysfs_attr xfs_sysfs_attr_##name = __ATTR_RO(name)
43 #define XFS_SYSFS_ATTR_WO(name) \
44 static struct xfs_sysfs_attr xfs_sysfs_attr_##name = __ATTR_WO(name)
46 #define ATTR_LIST(name) &xfs_sysfs_attr_##name.attr
49 * xfs_mount kobject. This currently has no attributes and thus no need for show
50 * and store helpers. The mp kobject serves as the per-mount parent object that
51 * is identified by the fsname under sysfs.
54 struct kobj_type xfs_mp_ktype = {
55 .release = xfs_sysfs_release,
59 xfs_sysfs_object_show(
60 struct kobject *kobject,
61 struct attribute *attr,
64 struct xfs_sysfs_attr *xfs_attr = to_attr(attr);
66 return xfs_attr->show ? xfs_attr->show(kobject, buf) : 0;
70 xfs_sysfs_object_store(
71 struct kobject *kobject,
72 struct attribute *attr,
76 struct xfs_sysfs_attr *xfs_attr = to_attr(attr);
78 return xfs_attr->store ? xfs_attr->store(kobject, buf, count) : 0;
81 static const struct sysfs_ops xfs_sysfs_ops = {
82 .show = xfs_sysfs_object_show,
83 .store = xfs_sysfs_object_store,
90 log_recovery_delay_store(
91 struct kobject *kobject,
98 ret = kstrtoint(buf, 0, &val);
102 if (val < 0 || val > 60)
105 xfs_globals.log_recovery_delay = val;
111 log_recovery_delay_show(
112 struct kobject *kobject,
115 return snprintf(buf, PAGE_SIZE, "%d\n", xfs_globals.log_recovery_delay);
117 XFS_SYSFS_ATTR_RW(log_recovery_delay);
119 static struct attribute *xfs_dbg_attrs[] = {
120 ATTR_LIST(log_recovery_delay),
124 struct kobj_type xfs_dbg_ktype = {
125 .release = xfs_sysfs_release,
126 .sysfs_ops = &xfs_sysfs_ops,
127 .default_attrs = xfs_dbg_attrs,
134 static inline struct xstats *
135 to_xstats(struct kobject *kobject)
137 struct xfs_kobj *kobj = to_kobj(kobject);
139 return container_of(kobj, struct xstats, xs_kobj);
144 struct kobject *kobject,
147 struct xstats *stats = to_xstats(kobject);
149 return xfs_stats_format(stats->xs_stats, buf);
151 XFS_SYSFS_ATTR_RO(stats);
155 struct kobject *kobject,
161 struct xstats *stats = to_xstats(kobject);
163 ret = kstrtoint(buf, 0, &val);
170 xfs_stats_clearall(stats->xs_stats);
173 XFS_SYSFS_ATTR_WO(stats_clear);
175 static struct attribute *xfs_stats_attrs[] = {
177 ATTR_LIST(stats_clear),
181 struct kobj_type xfs_stats_ktype = {
182 .release = xfs_sysfs_release,
183 .sysfs_ops = &xfs_sysfs_ops,
184 .default_attrs = xfs_stats_attrs,
189 static inline struct xlog *
190 to_xlog(struct kobject *kobject)
192 struct xfs_kobj *kobj = to_kobj(kobject);
194 return container_of(kobj, struct xlog, l_kobj);
199 struct kobject *kobject,
204 struct xlog *log = to_xlog(kobject);
206 spin_lock(&log->l_icloglock);
207 cycle = log->l_curr_cycle;
208 block = log->l_curr_block;
209 spin_unlock(&log->l_icloglock);
211 return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, block);
213 XFS_SYSFS_ATTR_RO(log_head_lsn);
217 struct kobject *kobject,
222 struct xlog *log = to_xlog(kobject);
224 xlog_crack_atomic_lsn(&log->l_tail_lsn, &cycle, &block);
225 return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, block);
227 XFS_SYSFS_ATTR_RO(log_tail_lsn);
230 reserve_grant_head_show(
231 struct kobject *kobject,
237 struct xlog *log = to_xlog(kobject);
239 xlog_crack_grant_head(&log->l_reserve_head.grant, &cycle, &bytes);
240 return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, bytes);
242 XFS_SYSFS_ATTR_RO(reserve_grant_head);
245 write_grant_head_show(
246 struct kobject *kobject,
251 struct xlog *log = to_xlog(kobject);
253 xlog_crack_grant_head(&log->l_write_head.grant, &cycle, &bytes);
254 return snprintf(buf, PAGE_SIZE, "%d:%d\n", cycle, bytes);
256 XFS_SYSFS_ATTR_RO(write_grant_head);
258 static struct attribute *xfs_log_attrs[] = {
259 ATTR_LIST(log_head_lsn),
260 ATTR_LIST(log_tail_lsn),
261 ATTR_LIST(reserve_grant_head),
262 ATTR_LIST(write_grant_head),
266 struct kobj_type xfs_log_ktype = {
267 .release = xfs_sysfs_release,
268 .sysfs_ops = &xfs_sysfs_ops,
269 .default_attrs = xfs_log_attrs,