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37 #define DEBUG_SUBSYSTEM S_CLASS
39 #include <linux/seq_file.h>
40 #include <asm/statfs.h>
41 #include <lprocfs_status.h>
42 #include <obd_class.h>
44 static int lmv_numobd_seq_show(struct seq_file *m, void *v)
46 struct obd_device *dev = (struct obd_device *)m->private;
47 struct lmv_desc *desc;
50 desc = &dev->u.lmv.desc;
51 return seq_printf(m, "%u\n", desc->ld_tgt_count);
53 LPROC_SEQ_FOPS_RO(lmv_numobd);
55 static const char *placement_name[] = {
56 [PLACEMENT_CHAR_POLICY] = "CHAR",
57 [PLACEMENT_NID_POLICY] = "NID",
58 [PLACEMENT_INVAL_POLICY] = "INVAL"
61 static placement_policy_t placement_name2policy(char *name, int len)
65 for (i = 0; i < PLACEMENT_MAX_POLICY; i++) {
66 if (!strncmp(placement_name[i], name, len))
69 return PLACEMENT_INVAL_POLICY;
72 static const char *placement_policy2name(placement_policy_t placement)
74 LASSERT(placement < PLACEMENT_MAX_POLICY);
75 return placement_name[placement];
78 static int lmv_placement_seq_show(struct seq_file *m, void *v)
80 struct obd_device *dev = (struct obd_device *)m->private;
85 return seq_printf(m, "%s\n", placement_policy2name(lmv->lmv_placement));
88 #define MAX_POLICY_STRING_SIZE 64
90 static ssize_t lmv_placement_seq_write(struct file *file, const char *buffer,
91 size_t count, loff_t *off)
93 struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
94 char dummy[MAX_POLICY_STRING_SIZE + 1];
96 placement_policy_t policy;
99 if (copy_from_user(dummy, buffer, MAX_POLICY_STRING_SIZE))
102 LASSERT(dev != NULL);
105 if (len > MAX_POLICY_STRING_SIZE)
106 len = MAX_POLICY_STRING_SIZE;
108 if (dummy[len - 1] == '\n')
112 policy = placement_name2policy(dummy, len);
113 if (policy != PLACEMENT_INVAL_POLICY) {
114 spin_lock(&lmv->lmv_lock);
115 lmv->lmv_placement = policy;
116 spin_unlock(&lmv->lmv_lock);
118 CERROR("Invalid placement policy \"%s\"!\n", dummy);
123 LPROC_SEQ_FOPS(lmv_placement);
125 static int lmv_activeobd_seq_show(struct seq_file *m, void *v)
127 struct obd_device *dev = (struct obd_device *)m->private;
128 struct lmv_desc *desc;
130 LASSERT(dev != NULL);
131 desc = &dev->u.lmv.desc;
132 return seq_printf(m, "%u\n", desc->ld_active_tgt_count);
134 LPROC_SEQ_FOPS_RO(lmv_activeobd);
136 static int lmv_desc_uuid_seq_show(struct seq_file *m, void *v)
138 struct obd_device *dev = (struct obd_device *)m->private;
141 LASSERT(dev != NULL);
143 return seq_printf(m, "%s\n", lmv->desc.ld_uuid.uuid);
145 LPROC_SEQ_FOPS_RO(lmv_desc_uuid);
147 static void *lmv_tgt_seq_start(struct seq_file *p, loff_t *pos)
149 struct obd_device *dev = p->private;
150 struct lmv_obd *lmv = &dev->u.lmv;
151 return (*pos >= lmv->desc.ld_tgt_count) ? NULL : lmv->tgts[*pos];
154 static void lmv_tgt_seq_stop(struct seq_file *p, void *v)
159 static void *lmv_tgt_seq_next(struct seq_file *p, void *v, loff_t *pos)
161 struct obd_device *dev = p->private;
162 struct lmv_obd *lmv = &dev->u.lmv;
164 return (*pos >= lmv->desc.ld_tgt_count) ? NULL : lmv->tgts[*pos];
167 static int lmv_tgt_seq_show(struct seq_file *p, void *v)
169 struct lmv_tgt_desc *tgt = v;
173 return seq_printf(p, "%d: %s %sACTIVE\n", tgt->ltd_idx,
174 tgt->ltd_uuid.uuid, tgt->ltd_active ? "" : "IN");
177 struct seq_operations lmv_tgt_sops = {
178 .start = lmv_tgt_seq_start,
179 .stop = lmv_tgt_seq_stop,
180 .next = lmv_tgt_seq_next,
181 .show = lmv_tgt_seq_show,
184 static int lmv_target_seq_open(struct inode *inode, struct file *file)
186 struct seq_file *seq;
189 rc = seq_open(file, &lmv_tgt_sops);
193 seq = file->private_data;
194 seq->private = PDE_DATA(inode);
199 LPROC_SEQ_FOPS_RO_TYPE(lmv, uuid);
201 struct lprocfs_vars lprocfs_lmv_obd_vars[] = {
202 { "numobd", &lmv_numobd_fops, 0, 0 },
203 { "placement", &lmv_placement_fops, 0, 0 },
204 { "activeobd", &lmv_activeobd_fops, 0, 0 },
205 { "uuid", &lmv_uuid_fops, 0, 0 },
206 { "desc_uuid", &lmv_desc_uuid_fops, 0, 0 },
210 LPROC_SEQ_FOPS_RO_TYPE(lmv, numrefs);
212 static struct lprocfs_vars lprocfs_lmv_module_vars[] = {
213 { "num_refs", &lmv_numrefs_fops, 0, 0 },
217 struct file_operations lmv_proc_target_fops = {
218 .owner = THIS_MODULE,
219 .open = lmv_target_seq_open,
222 .release = seq_release,
225 void lprocfs_lmv_init_vars(struct lprocfs_static_vars *lvars)
227 lvars->module_vars = lprocfs_lmv_module_vars;
228 lvars->obd_vars = lprocfs_lmv_obd_vars;