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35 #define DEBUG_SUBSYSTEM S_CLASS
37 #include <linux/version.h>
38 #include <linux/seq_file.h>
39 #include <asm/statfs.h>
40 #include <lprocfs_status.h>
41 #include <obd_class.h>
44 static struct lprocfs_vars lprocfs_module_vars[] = { {0} };
45 static struct lprocfs_vars lprocfs_obd_vars[] = { {0} };
47 static int lmv_rd_numobd(char *page, char **start, off_t off, int count,
50 struct obd_device *dev = (struct obd_device*)data;
51 struct lmv_desc *desc;
54 desc = &dev->u.lmv.desc;
56 return snprintf(page, count, "%u\n", desc->ld_tgt_count);
60 static const char *placement_name[] = {
61 [PLACEMENT_CHAR_POLICY] = "CHAR",
62 [PLACEMENT_NID_POLICY] = "NID"
65 static placement_policy_t placement_name2policy(char *name, int len)
69 for (i = 0; i < PLACEMENT_MAX_POLICY; i++) {
70 if (!strncmp(placement_name[i], name, len))
73 return PLACEMENT_INVAL_POLICY;
76 static const char *placement_policy2name(placement_policy_t placement)
78 LASSERT(placement < PLACEMENT_MAX_POLICY);
79 return placement_name[placement];
82 static int lmv_rd_placement(char *page, char **start, off_t off, int count,
85 struct obd_device *dev = (struct obd_device*)data;
91 return snprintf(page, count, "%s\n",
92 placement_policy2name(lmv->lmv_placement));
96 #define MAX_POLICY_STRING_SIZE 64
98 static int lmv_wr_placement(struct file *file, const char *buffer,
99 unsigned long count, void *data)
101 struct obd_device *dev = (struct obd_device *)data;
102 char dummy[MAX_POLICY_STRING_SIZE + 1];
104 placement_policy_t policy;
107 if (cfs_copy_from_user(dummy, buffer, MAX_POLICY_STRING_SIZE))
110 LASSERT(dev != NULL);
113 if (len > MAX_POLICY_STRING_SIZE)
114 len = MAX_POLICY_STRING_SIZE;
116 if (dummy[len - 1] == '\n')
120 policy = placement_name2policy(dummy, len);
121 if (policy != PLACEMENT_INVAL_POLICY) {
122 spin_lock(&lmv->lmv_lock);
123 lmv->lmv_placement = policy;
124 spin_unlock(&lmv->lmv_lock);
126 CERROR("Invalid placement policy \"%s\"!\n", dummy);
132 static int lmv_rd_activeobd(char *page, char **start, off_t off, int count,
133 int *eof, void *data)
135 struct obd_device *dev = (struct obd_device*)data;
136 struct lmv_desc *desc;
138 LASSERT(dev != NULL);
139 desc = &dev->u.lmv.desc;
141 return snprintf(page, count, "%u\n", desc->ld_active_tgt_count);
144 static int lmv_rd_desc_uuid(char *page, char **start, off_t off, int count,
145 int *eof, void *data)
147 struct obd_device *dev = (struct obd_device*) data;
150 LASSERT(dev != NULL);
153 return snprintf(page, count, "%s\n", lmv->desc.ld_uuid.uuid);
156 static void *lmv_tgt_seq_start(struct seq_file *p, loff_t *pos)
158 struct obd_device *dev = p->private;
159 struct lmv_obd *lmv = &dev->u.lmv;
160 return (*pos >= lmv->desc.ld_tgt_count) ? NULL : &(lmv->tgts[*pos]);
164 static void lmv_tgt_seq_stop(struct seq_file *p, void *v)
169 static void *lmv_tgt_seq_next(struct seq_file *p, void *v, loff_t *pos)
171 struct obd_device *dev = p->private;
172 struct lmv_obd *lmv = &dev->u.lmv;
174 return (*pos >=lmv->desc.ld_tgt_count) ? NULL : &(lmv->tgts[*pos]);
177 static int lmv_tgt_seq_show(struct seq_file *p, void *v)
179 struct lmv_tgt_desc *tgt = v;
180 struct obd_device *dev = p->private;
181 struct lmv_obd *lmv = &dev->u.lmv;
182 int idx = tgt - &(lmv->tgts[0]);
184 return seq_printf(p, "%d: %s %sACTIVE\n", idx, tgt->ltd_uuid.uuid,
185 tgt->ltd_active ? "" : "IN");
188 struct seq_operations lmv_tgt_sops = {
189 .start = lmv_tgt_seq_start,
190 .stop = lmv_tgt_seq_stop,
191 .next = lmv_tgt_seq_next,
192 .show = lmv_tgt_seq_show,
195 static int lmv_target_seq_open(struct inode *inode, struct file *file)
197 struct proc_dir_entry *dp = PDE(inode);
198 struct seq_file *seq;
201 rc = seq_open(file, &lmv_tgt_sops);
205 seq = file->private_data;
206 seq->private = dp->data;
211 struct lprocfs_vars lprocfs_lmv_obd_vars[] = {
212 { "numobd", lmv_rd_numobd, 0, 0 },
213 { "placement", lmv_rd_placement, lmv_wr_placement, 0 },
214 { "activeobd", lmv_rd_activeobd, 0, 0 },
215 { "uuid", lprocfs_rd_uuid, 0, 0 },
216 { "desc_uuid", lmv_rd_desc_uuid, 0, 0 },
220 static struct lprocfs_vars lprocfs_lmv_module_vars[] = {
221 { "num_refs", lprocfs_rd_numrefs, 0, 0 },
225 struct file_operations lmv_proc_target_fops = {
226 .owner = THIS_MODULE,
227 .open = lmv_target_seq_open,
230 .release = seq_release,
234 void lprocfs_lmv_init_vars(struct lprocfs_static_vars *lvars)
236 lvars->module_vars = lprocfs_lmv_module_vars;
237 lvars->obd_vars = lprocfs_lmv_obd_vars;