#include <lustre_fid.h>
#include "mgs_internal.h"
+/**
+ * Initialize MGS per-export statistics.
+ *
+ * This function sets up procfs entries for various MGS export counters. These
+ * counters are for per-client statistics tracked on the server.
+ *
+ * \param[in] obd OBD device
+ * \param[in] exp OBD export
+ * \param[in] localdata NID of client
+ *
+ * \retval 0 if successful
+ * \retval negative value on error
+ */
int mgs_export_stats_init(struct obd_device *obd, struct obd_export *exp,
void *localdata)
{
lnet_nid_t *client_nid = localdata;
- struct nid_stat *tmp;
- int rc, is_new_nid;
+ struct nid_stat *stats;
+ int rc;
ENTRY;
- rc = lprocfs_exp_setup(exp, client_nid, &is_new_nid);
- if (rc != 0) {
- /* Mask error for already created /proc entries */
- if (rc == -EALREADY)
- rc = 0;
- GOTO(out, rc = 0);
- }
-
- if (!is_new_nid)
- GOTO(out, rc = 0);
-
- tmp = exp->exp_nid_stats;
- tmp->nid_stats = lprocfs_alloc_stats(NUM_OBD_STATS + LPROC_MGS_LAST,
- LPROCFS_STATS_FLAG_NOPERCPU);
- if (tmp->nid_stats == NULL)
- GOTO(out, rc = -ENOMEM);
-
- lprocfs_init_ops_stats(LPROC_MGS_LAST, tmp->nid_stats);
- mgs_stats_counter_init(tmp->nid_stats);
- rc = lprocfs_register_stats(tmp->nid_proc, "stats", tmp->nid_stats);
+ rc = lprocfs_exp_setup(exp, client_nid);
if (rc != 0)
+ /* Mask error for already created /proc entries */
+ RETURN(rc == -EALREADY ? 0 : rc);
+
+ stats = exp->exp_nid_stats;
+ stats->nid_stats = lprocfs_alloc_stats(NUM_OBD_STATS + LPROC_MGS_LAST,
+ LPROCFS_STATS_FLAG_NOPERCPU);
+ if (stats->nid_stats == NULL)
+ RETURN(-ENOMEM);
+
+ lprocfs_init_ops_stats(LPROC_MGS_LAST, stats->nid_stats);
+
+ mgs_stats_counter_init(stats->nid_stats);
+
+ rc = lprocfs_register_stats(stats->nid_proc, "stats", stats->nid_stats);
+ if (rc != 0) {
+ lprocfs_free_stats(&stats->nid_stats);
GOTO(out, rc);
+ }
- rc = lprocfs_nid_ldlm_stats_init(tmp);
+ rc = lprocfs_nid_ldlm_stats_init(stats);
if (rc != 0)
GOTO(out, rc);
- RETURN(0);
out:
- return rc;
+ RETURN(rc);
}
/**
* crash all connections are treated as new connections.
*/
int mgs_client_add(struct obd_device *obd, struct obd_export *exp,
- void *localdata)
+ void *localdata)
{
return 0;
}