/**
* Initialize OFD per-export statistics.
*
* This function sets up procfs entries for various OFD export counters. These
* counters are for per-client statistics tracked on the server.
*
* \param[in] ofd OFD device
* \param[in] exp OBD export
* \param[in] client_nid NID of client
*
* \retval 0 if successful
* \retval negative value on error
*/
static int ofd_export_stats_init(struct ofd_device *ofd,
struct obd_export *exp,
lnet_nid_t *client_nid)
{
struct obd_device *obd = ofd_obd(ofd);
struct nid_stat *stats;
int rc;
ENTRY;
LASSERT(obd->obd_uses_nid_stats);
if (obd_uuid_equals(&exp->exp_client_uuid, &obd->obd_uuid))
/* Self-export gets no proc entry */
RETURN(0);
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_OFD_STATS_LAST,
LPROCFS_STATS_FLAG_NOPERCPU);
if (stats->nid_stats == NULL)
RETURN(-ENOMEM);
lprocfs_init_ops_stats(LPROC_OFD_STATS_LAST, stats->nid_stats);
ofd_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(stats);
if (rc != 0)
GOTO(out, rc);
out:
RETURN(rc);
}
int mgs_export_stats_init(struct obd_device *obd, struct obd_export *exp,
void *localdata)
{
lnet_nid_t *client_nid = localdata;
int rc, newnid;
ENTRY;
rc = lprocfs_exp_setup(exp, client_nid, &newnid);
if (rc) {
/* Mask error for already created
* /proc entries */
if (rc == -EALREADY)
rc = 0;
RETURN(rc);
}
if (newnid) {
struct nid_stat *tmp = exp->exp_nid_stats;
int num_stats = 0;
num_stats = (sizeof(*obd->obd_type->typ_dt_ops) / sizeof(void *)) +
LPROC_MGS_LAST - 1;
tmp->nid_stats = lprocfs_alloc_stats(num_stats,
LPROCFS_STATS_FLAG_NOPERCPU);
if (tmp->nid_stats == NULL)
return -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);
if (rc)
GOTO(clean, rc);
rc = lprocfs_nid_ldlm_stats_init(tmp);
if (rc)
GOTO(clean, rc);
}
RETURN(0);
clean:
return rc;
}
int lprocfs_alloc_obd_stats(struct obd_device *obd, unsigned num_private_stats)
{
struct lprocfs_stats *stats;
unsigned int num_stats;
int rc, i;
LASSERT(obd->obd_stats == NULL);
LASSERT(obd->obd_proc_entry != NULL);
LASSERT(obd->obd_cntr_base == 0);
num_stats = NUM_OBD_STATS + num_private_stats;
stats = lprocfs_alloc_stats(num_stats, 0);
if (stats == NULL)
return -ENOMEM;
lprocfs_init_ops_stats(num_private_stats, stats);
for (i = num_private_stats; i < num_stats; i++) {
/* If this LBUGs, it is likely that an obd
* operation was added to struct obd_ops in
* <obd.h>, and that the corresponding line item
* LPROCFS_OBD_OP_INIT(.., .., opname)
* is missing from the list above. */
LASSERTF(stats->ls_cnt_header[i].lc_name != NULL,
"Missing obd_stat initializer obd_op "
"operation at offset %d.\n", i - num_private_stats);
}
rc = lprocfs_register_stats(obd->obd_proc_entry, "stats", stats);
if (rc < 0) {
lprocfs_free_stats(&stats);
} else {
obd->obd_stats = stats;
obd->obd_cntr_base = num_private_stats;
}
return rc;
}
