ceph: fix xattr rbtree search
[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 && req->r_session)
64                         seq_printf(s, "%lld\tmds%d\t", req->r_tid,
65                                    req->r_session->s_mds);
66                 else if (!req->r_request)
67                         seq_printf(s, "%lld\t(no request)\t", req->r_tid);
68                 else
69                         seq_printf(s, "%lld\t(no session)\t", req->r_tid);
70
71                 seq_printf(s, "%s", ceph_mds_op_name(req->r_op));
72
73                 if (req->r_got_unsafe)
74                         seq_printf(s, "\t(unsafe)");
75                 else
76                         seq_printf(s, "\t");
77
78                 if (req->r_inode) {
79                         seq_printf(s, " #%llx", ceph_ino(req->r_inode));
80                 } else if (req->r_dentry) {
81                         path = ceph_mdsc_build_path(req->r_dentry, &pathlen,
82                                                     &pathbase, 0);
83                         if (IS_ERR(path))
84                                 path = NULL;
85                         spin_lock(&req->r_dentry->d_lock);
86                         seq_printf(s, " #%llx/%.*s (%s)",
87                                    ceph_ino(req->r_dentry->d_parent->d_inode),
88                                    req->r_dentry->d_name.len,
89                                    req->r_dentry->d_name.name,
90                                    path ? path : "");
91                         spin_unlock(&req->r_dentry->d_lock);
92                         kfree(path);
93                 } else if (req->r_path1) {
94                         seq_printf(s, " #%llx/%s", req->r_ino1.ino,
95                                    req->r_path1);
96                 }
97
98                 if (req->r_old_dentry) {
99                         path = ceph_mdsc_build_path(req->r_old_dentry, &pathlen,
100                                                     &pathbase, 0);
101                         if (IS_ERR(path))
102                                 path = NULL;
103                         spin_lock(&req->r_old_dentry->d_lock);
104                         seq_printf(s, " #%llx/%.*s (%s)",
105                            ceph_ino(req->r_old_dentry->d_parent->d_inode),
106                                    req->r_old_dentry->d_name.len,
107                                    req->r_old_dentry->d_name.name,
108                                    path ? path : "");
109                         spin_unlock(&req->r_old_dentry->d_lock);
110                         kfree(path);
111                 } else if (req->r_path2) {
112                         if (req->r_ino2.ino)
113                                 seq_printf(s, " #%llx/%s", req->r_ino2.ino,
114                                            req->r_path2);
115                         else
116                                 seq_printf(s, " %s", req->r_path2);
117                 }
118
119                 seq_printf(s, "\n");
120         }
121         mutex_unlock(&mdsc->mutex);
122
123         return 0;
124 }
125
126 static int caps_show(struct seq_file *s, void *p)
127 {
128         struct ceph_fs_client *fsc = s->private;
129         int total, avail, used, reserved, min;
130
131         ceph_reservation_status(fsc, &total, &avail, &used, &reserved, &min);
132         seq_printf(s, "total\t\t%d\n"
133                    "avail\t\t%d\n"
134                    "used\t\t%d\n"
135                    "reserved\t%d\n"
136                    "min\t%d\n",
137                    total, avail, used, reserved, min);
138         return 0;
139 }
140
141 static int dentry_lru_show(struct seq_file *s, void *ptr)
142 {
143         struct ceph_fs_client *fsc = s->private;
144         struct ceph_mds_client *mdsc = fsc->mdsc;
145         struct ceph_dentry_info *di;
146
147         spin_lock(&mdsc->dentry_lru_lock);
148         list_for_each_entry(di, &mdsc->dentry_lru, lru) {
149                 struct dentry *dentry = di->dentry;
150                 seq_printf(s, "%p %p\t%.*s\n",
151                            di, dentry, dentry->d_name.len, dentry->d_name.name);
152         }
153         spin_unlock(&mdsc->dentry_lru_lock);
154
155         return 0;
156 }
157
158 CEPH_DEFINE_SHOW_FUNC(mdsmap_show)
159 CEPH_DEFINE_SHOW_FUNC(mdsc_show)
160 CEPH_DEFINE_SHOW_FUNC(caps_show)
161 CEPH_DEFINE_SHOW_FUNC(dentry_lru_show)
162
163
164 /*
165  * debugfs
166  */
167 static int congestion_kb_set(void *data, u64 val)
168 {
169         struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
170
171         fsc->mount_options->congestion_kb = (int)val;
172         return 0;
173 }
174
175 static int congestion_kb_get(void *data, u64 *val)
176 {
177         struct ceph_fs_client *fsc = (struct ceph_fs_client *)data;
178
179         *val = (u64)fsc->mount_options->congestion_kb;
180         return 0;
181 }
182
183 DEFINE_SIMPLE_ATTRIBUTE(congestion_kb_fops, congestion_kb_get,
184                         congestion_kb_set, "%llu\n");
185
186
187 void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
188 {
189         dout("ceph_fs_debugfs_cleanup\n");
190         debugfs_remove(fsc->debugfs_bdi);
191         debugfs_remove(fsc->debugfs_congestion_kb);
192         debugfs_remove(fsc->debugfs_mdsmap);
193         debugfs_remove(fsc->debugfs_caps);
194         debugfs_remove(fsc->debugfs_mdsc);
195         debugfs_remove(fsc->debugfs_dentry_lru);
196 }
197
198 int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
199 {
200         char name[100];
201         int err = -ENOMEM;
202
203         dout("ceph_fs_debugfs_init\n");
204         fsc->debugfs_congestion_kb =
205                 debugfs_create_file("writeback_congestion_kb",
206                                     0600,
207                                     fsc->client->debugfs_dir,
208                                     fsc,
209                                     &congestion_kb_fops);
210         if (!fsc->debugfs_congestion_kb)
211                 goto out;
212
213         dout("a\n");
214
215         snprintf(name, sizeof(name), "../../bdi/%s",
216                  dev_name(fsc->backing_dev_info.dev));
217         fsc->debugfs_bdi =
218                 debugfs_create_symlink("bdi",
219                                        fsc->client->debugfs_dir,
220                                        name);
221         if (!fsc->debugfs_bdi)
222                 goto out;
223
224         dout("b\n");
225         fsc->debugfs_mdsmap = debugfs_create_file("mdsmap",
226                                         0600,
227                                         fsc->client->debugfs_dir,
228                                         fsc,
229                                         &mdsmap_show_fops);
230         if (!fsc->debugfs_mdsmap)
231                 goto out;
232
233         dout("ca\n");
234         fsc->debugfs_mdsc = debugfs_create_file("mdsc",
235                                                 0600,
236                                                 fsc->client->debugfs_dir,
237                                                 fsc,
238                                                 &mdsc_show_fops);
239         if (!fsc->debugfs_mdsc)
240                 goto out;
241
242         dout("da\n");
243         fsc->debugfs_caps = debugfs_create_file("caps",
244                                                    0400,
245                                                    fsc->client->debugfs_dir,
246                                                    fsc,
247                                                    &caps_show_fops);
248         if (!fsc->debugfs_caps)
249                 goto out;
250
251         dout("ea\n");
252         fsc->debugfs_dentry_lru = debugfs_create_file("dentry_lru",
253                                         0600,
254                                         fsc->client->debugfs_dir,
255                                         fsc,
256                                         &dentry_lru_show_fops);
257         if (!fsc->debugfs_dentry_lru)
258                 goto out;
259
260         return 0;
261
262 out:
263         ceph_fs_debugfs_cleanup(fsc);
264         return err;
265 }
266
267
268 #else  /* CONFIG_DEBUG_FS */
269
270 int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
271 {
272         return 0;
273 }
274
275 void ceph_fs_debugfs_cleanup(struct ceph_fs_client *fsc)
276 {
277 }
278
279 #endif  /* CONFIG_DEBUG_FS */