ceph: fix debugfs warnings
[linux-2.6.git] / fs / ceph / debugfs.c
1 #include <linux/ceph/ceph_debug.h>
2
3 #include <linux/device.h>
4 #include <linux/slab.h>
5 #include <linux/module.h>
6 #include <linux/ctype.h>
7 #include <linux/debugfs.h>
8 #include <linux/seq_file.h>
9
10 #include <linux/ceph/libceph.h>
11 #include <linux/ceph/mon_client.h>
12 #include <linux/ceph/auth.h>
13 #include <linux/ceph/debugfs.h>
14
15 #include "super.h"
16
17 #ifdef CONFIG_DEBUG_FS
18
19 #include "mds_client.h"
20
21 static int mdsmap_show(struct seq_file *s, void *p)
22 {
23         int i;
24         struct ceph_fs_client *fsc = s->private;
25
26         if (fsc->mdsc == NULL || fsc->mdsc->mdsmap == NULL)
27                 return 0;
28         seq_printf(s, "epoch %d\n", fsc->mdsc->mdsmap->m_epoch);
29         seq_printf(s, "root %d\n", fsc->mdsc->mdsmap->m_root);
30         seq_printf(s, "session_timeout %d\n",
31                        fsc->mdsc->mdsmap->m_session_timeout);
32         seq_printf(s, "session_autoclose %d\n",
33                        fsc->mdsc->mdsmap->m_session_autoclose);
34         for (i = 0; i < fsc->mdsc->mdsmap->m_max_mds; i++) {
35                 struct ceph_entity_addr *addr =
36                         &fsc->mdsc->mdsmap->m_info[i].addr;
37                 int state = fsc->mdsc->mdsmap->m_info[i].state;
38
39                 seq_printf(s, "\tmds%d\t%s\t(%s)\n", i,
40                                ceph_pr_addr(&addr->in_addr),
41                                ceph_mds_state_name(state));
42         }
43         return 0;
44 }
45
46 /*
47  * mdsc debugfs
48  */
49 static int mdsc_show(struct seq_file *s, void *p)
50 {
51         struct ceph_fs_client *fsc = s->private;
52         struct ceph_mds_client *mdsc = fsc->mdsc;
53         struct ceph_mds_request *req;
54         struct rb_node *rp;
55         int pathlen;
56         u64 pathbase;
57         char *path;
58
59         mutex_lock(&mdsc->mutex);
60         for (rp = rb_first(&mdsc->request_tree); rp; rp = rb_next(rp)) {
61                 req = rb_entry(rp, struct ceph_mds_request, r_node);
62
63                 if (req->r_request)
64                         seq_printf(s, "%lld\tmds%d\t", req->r_tid, req->r_mds);
65                 else
66                         seq_printf(s, "%lld\t(no request)\t", req->r_tid);
67
68                 seq_printf(s, "%s", ceph_mds_op_name(req->r_op));
69
70                 if (req->r_got_unsafe)
71                         seq_printf(s, "\t(unsafe)");
72                 else
73                         seq_printf(s, "\t");
74
75                 if (req->r_inode) {
76                         seq_printf(s, " #%llx", ceph_ino(req->r_inode));
77                 } else if (req->r_dentry) {
78                         path = ceph_mdsc_build_path(req->r_dentry, &pathlen,
79                                                     &pathbase, 0);
80                         if (IS_ERR(path))
81                                 path = NULL;
82                         spin_lock(&req->r_dentry->d_lock);
83                         seq_printf(s, " #%llx/%.*s (%s)",
84                                    ceph_ino(req->r_dentry->d_parent->d_inode),
85                                    req->r_dentry->d_name.len,
86                                    req->r_dentry->d_name.name,
87                                    path ? path : "");
88                         spin_unlock(&req->r_dentry->d_lock);
89                         kfree(path);
90                 } else if (req->r_path1) {
91                         seq_printf(s, " #%llx/%s", req->r_ino1.ino,
92                                    req->r_path1);
93                 }
94
95                 if (req->r_old_dentry) {
96                         path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen,
97                                                     &pathbase, 0);
98                         if (IS_ERR(path))
99                                 path = NULL;
100                         spin_lock(&req->r_old_dentry->d_lock);
101                         seq_printf(s, " #%llx/%.*s (%s)",
102                            ceph_ino(req->r_old_dentry->d_parent->d_inode),
103                                    req->r_old_dentry->d_name.len,
104                                    req->r_old_dentry->d_name.name,
105                                    path ? path : "");
106                         spin_unlock(&req->r_old_dentry->d_lock);
107                         kfree(path);
108                 } else if (req->r_path2) {
109                         if (req->r_ino2.ino)
110                                 seq_printf(s, " #%llx/%s", req->r_ino2.ino,
111                                            req->r_path2);
112                         else
113                                 seq_printf(s, " %s", req->r_path2);
114                 }
115
116                 seq_printf(s, "\n");
117         }
118         mutex_unlock(&mdsc->mutex);
119
120         return 0;
121 }
122
123 static int caps_show(struct seq_file *s, void *p)
124 {
125         struct ceph_fs_client *fsc = s->private;
126         int total, avail, used, reserved, min;
127
128         ceph_reservation_status(fsc, &total, &avail, &used, &reserved, &min);
129         seq_printf(s, "total\t\t%d\n"
130                    "avail\t\t%d\n"
131                    "used\t\t%d\n"
132                    "reserved\t%d\n"
133                    "min\t%d\n",
134                    total, avail, used, reserved, min);
135         return 0;
136 }
137
138 static int dentry_lru_show(struct seq_file *s, void *ptr)
139 {
140         struct ceph_fs_client *fsc = s->private;
141         struct ceph_mds_client *mdsc = fsc->mdsc;
142         struct ceph_dentry_info *di;
143
144         spin_lock(&mdsc->dentry_lru_lock);
145         list_for_each_entry(di, &mdsc->dentry_lru, lru) {
146                 struct dentry *dentry = di->dentry;
147                 seq_printf(s, "%p %p\t%.*s\n",
148                            di, dentry, dentry->d_name.len, dentry->d_name.name);
149         }
150         spin_unlock(&mdsc->dentry_lru_lock);
151
152         return 0;
153 }
154
155 CEPH_DEFINE_SHOW_FUNC(mdsmap_show)
156 CEPH_DEFINE_SHOW_FUNC(mdsc_show)
157 CEPH_DEFINE_SHOW_FUNC(caps_show)
158 CEPH_DEFINE_SHOW_FUNC(dentry_lru_show)
159
160
161 /*
162  * debugfs
163  */
164 static int congestion_kb_set(void *data, u64 val)
165 {
166         struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
167
168         fsc->mount_options->congestion_kb = (int)val;
169         return 0;
170 }
171
172 static int congestion_kb_get(void *data, u64 *val)
173 {
174         struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
175
176         *val = (u64)fsc->mount_options->congestion_kb;
177         return 0;
178 }
179
180 DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get,
181                         congestion_kb_set, "%llu\n");
182
183
184 void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
185 {
186         dout("ceph_fs_debugfs_cleanup\n");
187         debugfs_remove(fsc->debugfs_bdi);
188         debugfs_remove(fsc->debugfs_congestion_kb);
189         debugfs_remove(fsc->debugfs_mdsmap);
190         debugfs_remove(fsc->debugfs_caps);
191         debugfs_remove(fsc->debugfs_mdsc);
192         debugfs_remove(fsc->debugfs_dentry_lru);
193 }
194
195 int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
196 {
197         char name[100];
198         int err = -ENOMEM;
199
200         dout("ceph_fs_debugfs_init\n");
201         fsc->debugfs_congestion_kb =
202                 debugfs_create_file("writeback_congestion_kb",
203                                     0600,
204                                     fsc->client->debugfs_dir,
205                                     fsc,
206                                     &congestion_kb_fops);
207         if (!fsc->debugfs_congestion_kb)
208                 goto out;
209
210         dout("a\n");
211
212         snprintf(name, sizeof(name), "../../bdi/%s",
213                  dev_name(fsc->backing_dev_info.dev));
214         fsc->debugfs_bdi =
215                 debugfs_create_symlink("bdi",
216                                        fsc->client->debugfs_dir,
217                                        name);
218         if (!fsc->debugfs_bdi)
219                 goto out;
220
221         dout("b\n");
222         fsc->debugfs_mdsmap = debugfs_create_file("mdsmap",
223                                         0600,
224                                         fsc->client->debugfs_dir,
225                                         fsc,
226                                         &mdsmap_show_fops);
227         if (!fsc->debugfs_mdsmap)
228                 goto out;
229
230         dout("ca\n");
231         fsc->debugfs_mdsc = debugfs_create_file("mdsc",
232                                                 0600,
233                                                 fsc->client->debugfs_dir,
234                                                 fsc,
235                                                 &mdsc_show_fops);
236         if (!fsc->debugfs_mdsc)
237                 goto out;
238
239         dout("da\n");
240         fsc->debugfs_caps = debugfs_create_file("caps",
241                                                    0400,
242                                                    fsc->client->debugfs_dir,
243                                                    fsc,
244                                                    &caps_show_fops);
245         if (!fsc->debugfs_caps)
246                 goto out;
247
248         dout("ea\n");
249         fsc->debugfs_dentry_lru = debugfs_create_file("dentry_lru",
250                                         0600,
251                                         fsc->client->debugfs_dir,
252                                         fsc,
253                                         &dentry_lru_show_fops);
254         if (!fsc->debugfs_dentry_lru)
255                 goto out;
256
257         return 0;
258
259 out:
260         ceph_fs_debugfs_cleanup(fsc);
261         return err;
262 }
263
264
265 #else  /* CONFIG_DEBUG_FS */
266
267 int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
268 {
269         return 0;
270 }
271
272 void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
273 {
274 }
275
276 #endif  /* CONFIG_DEBUG_FS */