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staging/lustre/obd: Remove nid_stats tracking

Browse source 
This nid_stats tracking only makes sense on the server side,
on the client there are no other clients to keep track of anyway.

Signed-off-by: Dmitry Eremin <dmiter4ever@gmail.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Oleg Drokin 2015-05-30 23:27:04 -04:00 • committed by Greg Kroah-Hartman
parent ade9fb1e7f
commit d9528a30a8
8 changed files with 0 additions and 244 deletions
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1
drivers/staging/lustre/lustre/include/dt_object.h
View file

@ -58,7 +58,6 @@
#include "../../include/linux/libcfs/libcfs.h"
struct seq_file;
struct proc_dir_entry;
struct lustre_cfg;
struct thandle;

15
drivers/staging/lustre/lustre/include/lprocfs_status.h
View file

@ -558,7 +558,6 @@ extern void lprocfs_counter_init(struct lprocfs_stats *stats, int index,
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);
@ -573,11 +572,6 @@ extern struct proc_dir_entry *lprocfs_add_simple(struct proc_dir_entry *root,
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,
@ -909,15 +903,6 @@ static inline struct proc_dir_entry *
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,

2
drivers/staging/lustre/lustre/include/lu_object.h
View file

@ -43,7 +43,6 @@
#include "lu_ref.h"
struct seq_file;
struct proc_dir_entry;
struct lustre_cfg;
struct lprocfs_stats;
@ -277,7 +276,6 @@ struct lu_device {
* 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;

29
drivers/staging/lustre/lustre/include/lustre_export.h
View file

@ -106,34 +106,6 @@ struct mgs_export_data {
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,
@ -190,7 +162,6 @@ struct obd_export {
* 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;

3
drivers/staging/lustre/lustre/include/obd.h
View file

@ -845,9 +845,6 @@ struct obd_device {
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;

18
drivers/staging/lustre/lustre/include/obd_class.h
View file

@ -378,10 +378,6 @@ static inline int obd_check_dev_active(struct obd_device *obd)
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) \
@ -418,20 +414,6 @@ static inline int obd_check_dev_active(struct obd_device *obd)
#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)) { \

96
drivers/staging/lustre/lustre/obdclass/lprocfs_status.c
View file

@ -1106,46 +1106,6 @@ int lprocfs_obd_cleanup(struct obd_device *obd)
}
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;
@ -1679,64 +1639,8 @@ void lprocfs_init_ldlm_stats(struct lprocfs_stats *ldlm_stats)
}
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);

80
drivers/staging/lustre/lustre/obdclass/obd_config.c
View file

@ -49,7 +49,6 @@
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 *********/
@ -383,7 +382,6 @@ int class_attach(struct lustre_cfg *lcfg)
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);
@ -486,7 +484,6 @@ int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
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 */
@ -515,19 +512,6 @@ int class_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
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);
@ -567,10 +551,6 @@ err_hash:
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;
@ -694,12 +674,6 @@ int class_cleanup(struct obd_device *obd, struct lustre_cfg *lcfg)
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;
@ -1893,57 +1867,3 @@ static cfs_hash_ops_t nid_hash_ops = {
.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,
};