#include "../../include/linux/libcfs/libcfs.h"
struct seq_file;
-struct proc_dir_entry;
struct lustre_cfg;
struct thandle;
extern void lprocfs_free_obd_stats(struct obd_device *obddev);
extern void lprocfs_free_md_stats(struct obd_device *obddev);
struct obd_export;
-struct nid_stat;
extern int lprocfs_add_clear_entry(struct obd_device *obd,
struct proc_dir_entry *entry);
extern int lprocfs_exp_cleanup(struct obd_export *exp);
extern struct dentry *
ldebugfs_add_symlink(const char *name, struct dentry *parent,
const char *format, ...);
-extern void lprocfs_free_per_client_stats(struct obd_device *obd);
-extern int
-lprocfs_nid_stats_clear_write(struct file *file, const char *buffer,
- unsigned long count, void *data);
-extern int lprocfs_nid_stats_clear_read(struct seq_file *m, void *data);
extern int ldebugfs_register_stats(struct dentry *parent,
const char *name,
lprocfs_add_simple(struct proc_dir_entry *root, char *name,
void *data, struct file_operations *fops)
{return 0; }
-static inline void lprocfs_free_per_client_stats(struct obd_device *obd)
-{ return; }
-static inline
-int lprocfs_nid_stats_clear_write(struct file *file, const char *buffer,
- unsigned long count, void *data)
-{return count;}
-static inline
-int lprocfs_nid_stats_clear_read(struct seq_file *m, void *data)
-{ return 0; }
static inline struct proc_dir_entry *
lprocfs_register(const char *name, struct proc_dir_entry *parent,
#include "lu_ref.h"
struct seq_file;
-struct proc_dir_entry;
struct lustre_cfg;
struct lprocfs_stats;
* Stack this device belongs to.
*/
struct lu_site *ld_site;
- struct proc_dir_entry *ld_proc_entry;
/** \todo XXX: temporary back pointer into obd. */
struct obd_device *ld_obd;
spinlock_t med_lock; /* protect med_clients */
};
-/**
- * per-NID statistics structure.
- * It tracks access patterns to this export on a per-client-NID basis
- */
-struct nid_stat {
- lnet_nid_t nid;
- struct hlist_node nid_hash;
- struct list_head nid_list;
- struct obd_device *nid_obd;
- struct proc_dir_entry *nid_proc;
- struct lprocfs_stats *nid_stats;
- struct lprocfs_stats *nid_ldlm_stats;
- atomic_t nid_exp_ref_count; /* for obd_nid_stats_hash
- exp_nid_stats */
-};
-
-#define nidstat_getref(nidstat) \
-do { \
- atomic_inc(&(nidstat)->nid_exp_ref_count); \
-} while (0)
-
-#define nidstat_putref(nidstat) \
-do { \
- atomic_dec(&(nidstat)->nid_exp_ref_count); \
- LASSERTF(atomic_read(&(nidstat)->nid_exp_ref_count) >= 0, \
- "stat %p nid_exp_ref_count < 0\n", nidstat); \
-} while (0)
-
enum obd_option {
OBD_OPT_FORCE = 0x0001,
OBD_OPT_FAILOVER = 0x0002,
* exp_lock protect its change
*/
struct obd_import *exp_imp_reverse;
- struct nid_stat *exp_nid_stats;
struct lprocfs_stats *exp_md_stats;
/** Active connection */
struct ptlrpc_connection *exp_connection;
struct cfs_hash *obd_uuid_hash;
/* nid-export hash body */
struct cfs_hash *obd_nid_hash;
- /* nid stats body */
- struct cfs_hash *obd_nid_stats_hash;
- struct list_head obd_nid_stats;
atomic_t obd_refcount;
wait_queue_head_t obd_refcount_waitq;
struct list_head obd_exports;
OBD_COUNTER_OFFSET(op); \
LASSERT(coffset < (export)->exp_obd->obd_stats->ls_num); \
lprocfs_counter_incr((export)->exp_obd->obd_stats, coffset); \
- if ((export)->exp_nid_stats != NULL && \
- (export)->exp_nid_stats->nid_stats != NULL) \
- lprocfs_counter_incr( \
- (export)->exp_nid_stats->nid_stats, coffset);\
}
#define MD_COUNTER_OFFSET(op) \
#define EXP_MD_COUNTER_INCREMENT(exp, op)
#endif
-static inline int lprocfs_nid_ldlm_stats_init(struct nid_stat *tmp)
-{
- /* Always add in ldlm_stats */
- tmp->nid_ldlm_stats = lprocfs_alloc_stats(LDLM_LAST_OPC - LDLM_FIRST_OPC
- ,LPROCFS_STATS_FLAG_NOPERCPU);
- if (tmp->nid_ldlm_stats == NULL)
- return -ENOMEM;
-
- lprocfs_init_ldlm_stats(tmp->nid_ldlm_stats);
-
- return lprocfs_register_stats(tmp->nid_proc, "ldlm_stats",
- tmp->nid_ldlm_stats);
-}
-
#define OBD_CHECK_MD_OP(obd, op, err) \
do { \
if (!OBT(obd) || !MDP((obd), op)) { \
}
EXPORT_SYMBOL(lprocfs_obd_cleanup);
-static void lprocfs_free_client_stats(struct nid_stat *client_stat)
-{
- CDEBUG(D_CONFIG, "stat %p - data %p/%p\n", client_stat,
- client_stat->nid_proc, client_stat->nid_stats);
-
- LASSERTF(atomic_read(&client_stat->nid_exp_ref_count) == 0,
- "nid %s:count %d\n", libcfs_nid2str(client_stat->nid),
- atomic_read(&client_stat->nid_exp_ref_count));
-
- if (client_stat->nid_proc)
- lprocfs_remove(&client_stat->nid_proc);
-
- if (client_stat->nid_stats)
- lprocfs_free_stats(&client_stat->nid_stats);
-
- if (client_stat->nid_ldlm_stats)
- lprocfs_free_stats(&client_stat->nid_ldlm_stats);
-
- kfree(client_stat);
- return;
-
-}
-
-void lprocfs_free_per_client_stats(struct obd_device *obd)
-{
- struct cfs_hash *hash = obd->obd_nid_stats_hash;
- struct nid_stat *stat;
-
- /* we need extra list - because hash_exit called to early */
- /* not need locking because all clients is died */
- while (!list_empty(&obd->obd_nid_stats)) {
- stat = list_entry(obd->obd_nid_stats.next,
- struct nid_stat, nid_list);
- list_del_init(&stat->nid_list);
- cfs_hash_del(hash, &stat->nid, &stat->nid_hash);
- lprocfs_free_client_stats(stat);
- }
-}
-EXPORT_SYMBOL(lprocfs_free_per_client_stats);
-
int lprocfs_stats_alloc_one(struct lprocfs_stats *stats, unsigned int cpuid)
{
struct lprocfs_counter *cntr;
}
EXPORT_SYMBOL(lprocfs_init_ldlm_stats);
-int lprocfs_nid_stats_clear_read(struct seq_file *m, void *data)
-{
- seq_printf(m, "%s\n",
- "Write into this file to clear all nid stats and stale nid entries");
- return 0;
-}
-EXPORT_SYMBOL(lprocfs_nid_stats_clear_read);
-
-static int lprocfs_nid_stats_clear_write_cb(void *obj, void *data)
-{
- struct nid_stat *stat = obj;
-
- CDEBUG(D_INFO, "refcnt %d\n", atomic_read(&stat->nid_exp_ref_count));
- if (atomic_read(&stat->nid_exp_ref_count) == 1) {
- /* object has only hash references. */
- spin_lock(&stat->nid_obd->obd_nid_lock);
- list_move(&stat->nid_list, data);
- spin_unlock(&stat->nid_obd->obd_nid_lock);
- return 1;
- }
- /* we has reference to object - only clear data*/
- if (stat->nid_stats)
- lprocfs_clear_stats(stat->nid_stats);
-
- return 0;
-}
-
-int lprocfs_nid_stats_clear_write(struct file *file, const char *buffer,
- unsigned long count, void *data)
-{
- struct obd_device *obd = (struct obd_device *)data;
- struct nid_stat *client_stat;
- LIST_HEAD(free_list);
-
- cfs_hash_cond_del(obd->obd_nid_stats_hash,
- lprocfs_nid_stats_clear_write_cb, &free_list);
-
- while (!list_empty(&free_list)) {
- client_stat = list_entry(free_list.next, struct nid_stat,
- nid_list);
- list_del_init(&client_stat->nid_list);
- lprocfs_free_client_stats(client_stat);
- }
-
- return count;
-}
-EXPORT_SYMBOL(lprocfs_nid_stats_clear_write);
-
int lprocfs_exp_cleanup(struct obd_export *exp)
{
- struct nid_stat *stat = exp->exp_nid_stats;
-
- if (!stat || !exp->exp_obd)
- return 0;
-
- nidstat_putref(exp->exp_nid_stats);
- exp->exp_nid_stats = NULL;
-
return 0;
}
EXPORT_SYMBOL(lprocfs_exp_cleanup);
static cfs_hash_ops_t uuid_hash_ops;
static cfs_hash_ops_t nid_hash_ops;
-static cfs_hash_ops_t nid_stat_hash_ops;
/*********** string parsing utils *********/
INIT_LIST_HEAD(&obd->obd_unlinked_exports);
INIT_LIST_HEAD(&obd->obd_delayed_exports);
INIT_LIST_HEAD(&obd->obd_exports_timed);
- INIT_LIST_HEAD(&obd->obd_nid_stats);
spin_lock_init(&obd->obd_nid_lock);
spin_lock_init(&obd->obd_dev_lock);
mutex_init(&obd->obd_dev_mutex);
obd->obd_starting = 1;
obd->obd_uuid_hash = NULL;
obd->obd_nid_hash = NULL;
- obd->obd_nid_stats_hash = NULL;
spin_unlock(&obd->obd_dev_lock);
/* create an uuid-export lustre hash */
goto err_hash;
}
- /* create a nid-stats lustre hash */
- obd->obd_nid_stats_hash = cfs_hash_create("NID_STATS",
- HASH_NID_STATS_CUR_BITS,
- HASH_NID_STATS_MAX_BITS,
- HASH_NID_STATS_BKT_BITS, 0,
- CFS_HASH_MIN_THETA,
- CFS_HASH_MAX_THETA,
- &nid_stat_hash_ops, CFS_HASH_DEFAULT);
- if (!obd->obd_nid_stats_hash) {
- err = -ENOMEM;
- goto err_hash;
- }
-
exp = class_new_export(obd, &obd->obd_uuid);
if (IS_ERR(exp)) {
err = PTR_ERR(exp);
cfs_hash_putref(obd->obd_nid_hash);
obd->obd_nid_hash = NULL;
}
- if (obd->obd_nid_stats_hash) {
- cfs_hash_putref(obd->obd_nid_stats_hash);
- obd->obd_nid_stats_hash = NULL;
- }
obd->obd_starting = 0;
CERROR("setup %s failed (%d)\n", obd->obd_name, err);
return err;
obd->obd_nid_hash = NULL;
}
- /* destroy a nid-stats hash body */
- if (obd->obd_nid_stats_hash) {
- cfs_hash_putref(obd->obd_nid_stats_hash);
- obd->obd_nid_stats_hash = NULL;
- }
-
class_decref(obd, "setup", obd);
obd->obd_set_up = 0;
.hs_get = nid_export_get,
.hs_put_locked = nid_export_put_locked,
};
-
-
-/*
- * nid<->nidstats hash operations
- */
-
-static void *
-nidstats_key(struct hlist_node *hnode)
-{
- struct nid_stat *ns;
-
- ns = hlist_entry(hnode, struct nid_stat, nid_hash);
-
- return &ns->nid;
-}
-
-static int
-nidstats_keycmp(const void *key, struct hlist_node *hnode)
-{
- return *(lnet_nid_t *)nidstats_key(hnode) == *(lnet_nid_t *)key;
-}
-
-static void *
-nidstats_object(struct hlist_node *hnode)
-{
- return hlist_entry(hnode, struct nid_stat, nid_hash);
-}
-
-static void
-nidstats_get(struct cfs_hash *hs, struct hlist_node *hnode)
-{
- struct nid_stat *ns;
-
- ns = hlist_entry(hnode, struct nid_stat, nid_hash);
- nidstat_getref(ns);
-}
-
-static void
-nidstats_put_locked(struct cfs_hash *hs, struct hlist_node *hnode)
-{
- struct nid_stat *ns;
-
- ns = hlist_entry(hnode, struct nid_stat, nid_hash);
- nidstat_putref(ns);
-}
-
-static cfs_hash_ops_t nid_stat_hash_ops = {
- .hs_hash = nid_hash,
- .hs_key = nidstats_key,
- .hs_keycmp = nidstats_keycmp,
- .hs_object = nidstats_object,
- .hs_get = nidstats_get,
- .hs_put_locked = nidstats_put_locked,
-};
projects / platform / kernel / linux-exynos.git / commitdiff