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37 #define DEBUG_SUBSYSTEM S_CLASS
39 #include <linux/version.h>
40 #include <linux/seq_file.h>
41 #include <asm/statfs.h>
42 #include <lprocfs_status.h>
43 #include <obd_class.h>
46 static struct lprocfs_vars lprocfs_module_vars[] = { {0} };
47 static struct lprocfs_vars lprocfs_obd_vars[] = { {0} };
49 static int lmv_numobd_seq_show(struct seq_file *m, void *v)
51 struct obd_device *dev = (struct obd_device *)m->private;
52 struct lmv_desc *desc;
55 desc = &dev->u.lmv.desc;
56 return seq_printf(m, "%u\n", desc->ld_tgt_count);
58 LPROC_SEQ_FOPS_RO(lmv_numobd);
60 static const char *placement_name[] = {
61 [PLACEMENT_CHAR_POLICY] = "CHAR",
62 [PLACEMENT_NID_POLICY] = "NID",
63 [PLACEMENT_INVAL_POLICY] = "INVAL"
66 static placement_policy_t placement_name2policy(char *name, int len)
70 for (i = 0; i < PLACEMENT_MAX_POLICY; i++) {
71 if (!strncmp(placement_name[i], name, len))
74 return PLACEMENT_INVAL_POLICY;
77 static const char *placement_policy2name(placement_policy_t placement)
79 LASSERT(placement < PLACEMENT_MAX_POLICY);
80 return placement_name[placement];
83 static int lmv_placement_seq_show(struct seq_file *m, void *v)
85 struct obd_device *dev = (struct obd_device *)m->private;
90 return seq_printf(m, "%s\n", placement_policy2name(lmv->lmv_placement));
93 #define MAX_POLICY_STRING_SIZE 64
95 static ssize_t lmv_placement_seq_write(struct file *file, const char *buffer,
96 size_t count, loff_t *off)
98 struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
99 char dummy[MAX_POLICY_STRING_SIZE + 1];
101 placement_policy_t policy;
104 if (copy_from_user(dummy, buffer, MAX_POLICY_STRING_SIZE))
107 LASSERT(dev != NULL);
110 if (len > MAX_POLICY_STRING_SIZE)
111 len = MAX_POLICY_STRING_SIZE;
113 if (dummy[len - 1] == '\n')
117 policy = placement_name2policy(dummy, len);
118 if (policy != PLACEMENT_INVAL_POLICY) {
119 spin_lock(&lmv->lmv_lock);
120 lmv->lmv_placement = policy;
121 spin_unlock(&lmv->lmv_lock);
123 CERROR("Invalid placement policy \"%s\"!\n", dummy);
128 LPROC_SEQ_FOPS(lmv_placement);
130 static int lmv_activeobd_seq_show(struct seq_file *m, void *v)
132 struct obd_device *dev = (struct obd_device *)m->private;
133 struct lmv_desc *desc;
135 LASSERT(dev != NULL);
136 desc = &dev->u.lmv.desc;
137 return seq_printf(m, "%u\n", desc->ld_active_tgt_count);
139 LPROC_SEQ_FOPS_RO(lmv_activeobd);
141 static int lmv_desc_uuid_seq_show(struct seq_file *m, void *v)
143 struct obd_device *dev = (struct obd_device*)m->private;
146 LASSERT(dev != NULL);
148 return seq_printf(m, "%s\n", lmv->desc.ld_uuid.uuid);
150 LPROC_SEQ_FOPS_RO(lmv_desc_uuid);
152 static void *lmv_tgt_seq_start(struct seq_file *p, loff_t *pos)
154 struct obd_device *dev = p->private;
155 struct lmv_obd *lmv = &dev->u.lmv;
156 return (*pos >= lmv->desc.ld_tgt_count) ? NULL : lmv->tgts[*pos];
159 static void lmv_tgt_seq_stop(struct seq_file *p, void *v)
164 static void *lmv_tgt_seq_next(struct seq_file *p, void *v, loff_t *pos)
166 struct obd_device *dev = p->private;
167 struct lmv_obd *lmv = &dev->u.lmv;
169 return (*pos >= lmv->desc.ld_tgt_count) ? NULL : lmv->tgts[*pos];
172 static int lmv_tgt_seq_show(struct seq_file *p, void *v)
174 struct lmv_tgt_desc *tgt = v;
178 return seq_printf(p, "%d: %s %sACTIVE\n", tgt->ltd_idx,
179 tgt->ltd_uuid.uuid, tgt->ltd_active ? "" : "IN");
182 struct seq_operations lmv_tgt_sops = {
183 .start = lmv_tgt_seq_start,
184 .stop = lmv_tgt_seq_stop,
185 .next = lmv_tgt_seq_next,
186 .show = lmv_tgt_seq_show,
189 static int lmv_target_seq_open(struct inode *inode, struct file *file)
191 struct seq_file *seq;
194 rc = seq_open(file, &lmv_tgt_sops);
198 seq = file->private_data;
199 seq->private = PDE_DATA(inode);
203 LPROC_SEQ_FOPS_RO_TYPE(lmv, uuid);
205 struct lprocfs_seq_vars lprocfs_lmv_obd_vars[] = {
207 .fops = &lmv_numobd_fops },
208 { .name = "placement",
209 .fops = &lmv_placement_fops },
210 { .name = "activeobd",
211 .fops = &lmv_activeobd_fops },
213 .fops = &lmv_uuid_fops },
214 { .name = "desc_uuid",
215 .fops = &lmv_desc_uuid_fops },
219 struct file_operations lmv_proc_target_fops = {
220 .owner = THIS_MODULE,
221 .open = lmv_target_seq_open,
224 .release = seq_release,