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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_rd_numobd(char *page, char **start, off_t off, int count,
52 struct obd_device *dev = (struct obd_device*)data;
53 struct lmv_desc *desc;
56 desc = &dev->u.lmv.desc;
58 return snprintf(page, count, "%u\n", desc->ld_tgt_count);
62 static const char *placement_name[] = {
63 [PLACEMENT_CHAR_POLICY] = "CHAR",
64 [PLACEMENT_NID_POLICY] = "NID",
65 [PLACEMENT_INVAL_POLICY] = "INVAL"
68 static placement_policy_t placement_name2policy(char *name, int len)
72 for (i = 0; i < PLACEMENT_MAX_POLICY; i++) {
73 if (!strncmp(placement_name[i], name, len))
76 return PLACEMENT_INVAL_POLICY;
79 static const char *placement_policy2name(placement_policy_t placement)
81 LASSERT(placement < PLACEMENT_MAX_POLICY);
82 return placement_name[placement];
85 static int lmv_rd_placement(char *page, char **start, off_t off, int count,
88 struct obd_device *dev = (struct obd_device*)data;
94 return snprintf(page, count, "%s\n",
95 placement_policy2name(lmv->lmv_placement));
99 #define MAX_POLICY_STRING_SIZE 64
101 static int lmv_wr_placement(struct file *file, const char *buffer,
102 unsigned long count, void *data)
104 struct obd_device *dev = (struct obd_device *)data;
105 char dummy[MAX_POLICY_STRING_SIZE + 1];
107 placement_policy_t policy;
110 if (copy_from_user(dummy, buffer, MAX_POLICY_STRING_SIZE))
113 LASSERT(dev != NULL);
116 if (len > MAX_POLICY_STRING_SIZE)
117 len = MAX_POLICY_STRING_SIZE;
119 if (dummy[len - 1] == '\n')
123 policy = placement_name2policy(dummy, len);
124 if (policy != PLACEMENT_INVAL_POLICY) {
125 spin_lock(&lmv->lmv_lock);
126 lmv->lmv_placement = policy;
127 spin_unlock(&lmv->lmv_lock);
129 CERROR("Invalid placement policy \"%s\"!\n", dummy);
135 static int lmv_rd_activeobd(char *page, char **start, off_t off, int count,
136 int *eof, void *data)
138 struct obd_device *dev = (struct obd_device*)data;
139 struct lmv_desc *desc;
141 LASSERT(dev != NULL);
142 desc = &dev->u.lmv.desc;
144 return snprintf(page, count, "%u\n", desc->ld_active_tgt_count);
147 static int lmv_rd_desc_uuid(char *page, char **start, off_t off, int count,
148 int *eof, void *data)
150 struct obd_device *dev = (struct obd_device*) data;
153 LASSERT(dev != NULL);
156 return snprintf(page, count, "%s\n", lmv->desc.ld_uuid.uuid);
159 static void *lmv_tgt_seq_start(struct seq_file *p, loff_t *pos)
161 struct obd_device *dev = p->private;
162 struct lmv_obd *lmv = &dev->u.lmv;
163 return (*pos >= lmv->desc.ld_tgt_count) ? NULL : lmv->tgts[*pos];
166 static void lmv_tgt_seq_stop(struct seq_file *p, void *v)
171 static void *lmv_tgt_seq_next(struct seq_file *p, void *v, loff_t *pos)
173 struct obd_device *dev = p->private;
174 struct lmv_obd *lmv = &dev->u.lmv;
176 return (*pos >= lmv->desc.ld_tgt_count) ? NULL : lmv->tgts[*pos];
179 static int lmv_tgt_seq_show(struct seq_file *p, void *v)
181 struct lmv_tgt_desc *tgt = v;
185 return seq_printf(p, "%d: %s %sACTIVE\n", tgt->ltd_idx,
186 tgt->ltd_uuid.uuid, tgt->ltd_active ? "" : "IN");
189 struct seq_operations lmv_tgt_sops = {
190 .start = lmv_tgt_seq_start,
191 .stop = lmv_tgt_seq_stop,
192 .next = lmv_tgt_seq_next,
193 .show = lmv_tgt_seq_show,
196 static int lmv_target_seq_open(struct inode *inode, struct file *file)
198 struct proc_dir_entry *dp = PDE(inode);
199 struct seq_file *seq;
202 rc = seq_open(file, &lmv_tgt_sops);
206 seq = file->private_data;
207 seq->private = dp->data;
212 struct lprocfs_vars lprocfs_lmv_obd_vars[] = {
213 { "numobd", lmv_rd_numobd, 0, 0 },
214 { "placement", lmv_rd_placement, lmv_wr_placement, 0 },
215 { "activeobd", lmv_rd_activeobd, 0, 0 },
216 { "uuid", lprocfs_rd_uuid, 0, 0 },
217 { "desc_uuid", lmv_rd_desc_uuid, 0, 0 },
221 static struct lprocfs_vars lprocfs_lmv_module_vars[] = {
222 { "num_refs", lprocfs_rd_numrefs, 0, 0 },
226 struct file_operations lmv_proc_target_fops = {
227 .owner = THIS_MODULE,
228 .open = lmv_target_seq_open,
231 .release = seq_release,
235 void lprocfs_lmv_init_vars(struct lprocfs_static_vars *lvars)
237 lvars->module_vars = lprocfs_lmv_module_vars;
238 lvars->obd_vars = lprocfs_lmv_obd_vars;