mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-29 15:43:59 +08:00
9b6c8c9beb
This allows us to move the updates for th_cnt out of the mutex. This is a step towards reducing mutex coverage in nfsd(). Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
97 lines
2.8 KiB
C
97 lines
2.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Statistics for NFS server.
|
|
*
|
|
* Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
|
|
*/
|
|
#ifndef _NFSD_STATS_H
|
|
#define _NFSD_STATS_H
|
|
|
|
#include <uapi/linux/nfsd/stats.h>
|
|
#include <linux/percpu_counter.h>
|
|
|
|
|
|
enum {
|
|
NFSD_STATS_RC_HITS, /* repcache hits */
|
|
NFSD_STATS_RC_MISSES, /* repcache misses */
|
|
NFSD_STATS_RC_NOCACHE, /* uncached reqs */
|
|
NFSD_STATS_FH_STALE, /* FH stale error */
|
|
NFSD_STATS_IO_READ, /* bytes returned to read requests */
|
|
NFSD_STATS_IO_WRITE, /* bytes passed in write requests */
|
|
#ifdef CONFIG_NFSD_V4
|
|
NFSD_STATS_FIRST_NFS4_OP, /* count of individual nfsv4 operations */
|
|
NFSD_STATS_LAST_NFS4_OP = NFSD_STATS_FIRST_NFS4_OP + LAST_NFS4_OP,
|
|
#define NFSD_STATS_NFS4_OP(op) (NFSD_STATS_FIRST_NFS4_OP + (op))
|
|
#endif
|
|
NFSD_STATS_COUNTERS_NUM
|
|
};
|
|
|
|
struct nfsd_stats {
|
|
struct percpu_counter counter[NFSD_STATS_COUNTERS_NUM];
|
|
|
|
atomic_t th_cnt; /* number of available threads */
|
|
};
|
|
|
|
extern struct nfsd_stats nfsdstats;
|
|
|
|
extern struct svc_stat nfsd_svcstats;
|
|
|
|
int nfsd_percpu_counters_init(struct percpu_counter counters[], int num);
|
|
void nfsd_percpu_counters_reset(struct percpu_counter counters[], int num);
|
|
void nfsd_percpu_counters_destroy(struct percpu_counter counters[], int num);
|
|
int nfsd_stat_init(void);
|
|
void nfsd_stat_shutdown(void);
|
|
|
|
static inline void nfsd_stats_rc_hits_inc(void)
|
|
{
|
|
percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_RC_HITS]);
|
|
}
|
|
|
|
static inline void nfsd_stats_rc_misses_inc(void)
|
|
{
|
|
percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_RC_MISSES]);
|
|
}
|
|
|
|
static inline void nfsd_stats_rc_nocache_inc(void)
|
|
{
|
|
percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_RC_NOCACHE]);
|
|
}
|
|
|
|
static inline void nfsd_stats_fh_stale_inc(struct svc_export *exp)
|
|
{
|
|
percpu_counter_inc(&nfsdstats.counter[NFSD_STATS_FH_STALE]);
|
|
if (exp)
|
|
percpu_counter_inc(&exp->ex_stats.counter[EXP_STATS_FH_STALE]);
|
|
}
|
|
|
|
static inline void nfsd_stats_io_read_add(struct svc_export *exp, s64 amount)
|
|
{
|
|
percpu_counter_add(&nfsdstats.counter[NFSD_STATS_IO_READ], amount);
|
|
if (exp)
|
|
percpu_counter_add(&exp->ex_stats.counter[EXP_STATS_IO_READ], amount);
|
|
}
|
|
|
|
static inline void nfsd_stats_io_write_add(struct svc_export *exp, s64 amount)
|
|
{
|
|
percpu_counter_add(&nfsdstats.counter[NFSD_STATS_IO_WRITE], amount);
|
|
if (exp)
|
|
percpu_counter_add(&exp->ex_stats.counter[EXP_STATS_IO_WRITE], amount);
|
|
}
|
|
|
|
static inline void nfsd_stats_payload_misses_inc(struct nfsd_net *nn)
|
|
{
|
|
percpu_counter_inc(&nn->counter[NFSD_NET_PAYLOAD_MISSES]);
|
|
}
|
|
|
|
static inline void nfsd_stats_drc_mem_usage_add(struct nfsd_net *nn, s64 amount)
|
|
{
|
|
percpu_counter_add(&nn->counter[NFSD_NET_DRC_MEM_USAGE], amount);
|
|
}
|
|
|
|
static inline void nfsd_stats_drc_mem_usage_sub(struct nfsd_net *nn, s64 amount)
|
|
{
|
|
percpu_counter_sub(&nn->counter[NFSD_NET_DRC_MEM_USAGE], amount);
|
|
}
|
|
|
|
#endif /* _NFSD_STATS_H */
|