mirror of
https://github.com/torvalds/linux.git
synced 2024-11-22 12:11:40 +00:00
7d12cce878
Use group allocation/free of per-cpu counters api to accelerate nfsd percpu_counters init/destroy(), and also squash the nfsd_percpu_counters_init/reset/destroy() and nfsd_counters_init/destroy() into callers to simplify code. Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
87 lines
2.4 KiB
C
87 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* procfs-based user access to knfsd statistics
|
|
*
|
|
* /proc/net/rpc/nfsd
|
|
*
|
|
* Format:
|
|
* rc <hits> <misses> <nocache>
|
|
* Statistsics for the reply cache
|
|
* fh <stale> <deprecated filehandle cache stats>
|
|
* statistics for filehandle lookup
|
|
* io <bytes-read> <bytes-written>
|
|
* statistics for IO throughput
|
|
* th <threads> <deprecated thread usage histogram stats>
|
|
* number of threads
|
|
* ra <deprecated ra-cache stats>
|
|
*
|
|
* plus generic RPC stats (see net/sunrpc/stats.c)
|
|
*
|
|
* Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de>
|
|
*/
|
|
|
|
#include <linux/seq_file.h>
|
|
#include <linux/module.h>
|
|
#include <linux/sunrpc/stats.h>
|
|
#include <net/net_namespace.h>
|
|
|
|
#include "nfsd.h"
|
|
|
|
static int nfsd_show(struct seq_file *seq, void *v)
|
|
{
|
|
struct net *net = pde_data(file_inode(seq->file));
|
|
struct nfsd_net *nn = net_generic(net, nfsd_net_id);
|
|
int i;
|
|
|
|
seq_printf(seq, "rc %lld %lld %lld\nfh %lld 0 0 0 0\nio %lld %lld\n",
|
|
percpu_counter_sum_positive(&nn->counter[NFSD_STATS_RC_HITS]),
|
|
percpu_counter_sum_positive(&nn->counter[NFSD_STATS_RC_MISSES]),
|
|
percpu_counter_sum_positive(&nn->counter[NFSD_STATS_RC_NOCACHE]),
|
|
percpu_counter_sum_positive(&nn->counter[NFSD_STATS_FH_STALE]),
|
|
percpu_counter_sum_positive(&nn->counter[NFSD_STATS_IO_READ]),
|
|
percpu_counter_sum_positive(&nn->counter[NFSD_STATS_IO_WRITE]));
|
|
|
|
/* thread usage: */
|
|
seq_printf(seq, "th %u 0", atomic_read(&nfsd_th_cnt));
|
|
|
|
/* deprecated thread usage histogram stats */
|
|
for (i = 0; i < 10; i++)
|
|
seq_puts(seq, " 0.000");
|
|
|
|
/* deprecated ra-cache stats */
|
|
seq_puts(seq, "\nra 0 0 0 0 0 0 0 0 0 0 0 0\n");
|
|
|
|
/* show my rpc info */
|
|
svc_seq_show(seq, &nn->nfsd_svcstats);
|
|
|
|
#ifdef CONFIG_NFSD_V4
|
|
/* Show count for individual nfsv4 operations */
|
|
/* Writing operation numbers 0 1 2 also for maintaining uniformity */
|
|
seq_printf(seq, "proc4ops %u", LAST_NFS4_OP + 1);
|
|
for (i = 0; i <= LAST_NFS4_OP; i++) {
|
|
seq_printf(seq, " %lld",
|
|
percpu_counter_sum_positive(&nn->counter[NFSD_STATS_NFS4_OP(i)]));
|
|
}
|
|
seq_printf(seq, "\nwdeleg_getattr %lld",
|
|
percpu_counter_sum_positive(&nn->counter[NFSD_STATS_WDELEG_GETATTR]));
|
|
|
|
seq_putc(seq, '\n');
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
DEFINE_PROC_SHOW_ATTRIBUTE(nfsd);
|
|
|
|
void nfsd_proc_stat_init(struct net *net)
|
|
{
|
|
struct nfsd_net *nn = net_generic(net, nfsd_net_id);
|
|
|
|
svc_proc_register(net, &nn->nfsd_svcstats, &nfsd_proc_ops);
|
|
}
|
|
|
|
void nfsd_proc_stat_shutdown(struct net *net)
|
|
{
|
|
svc_proc_unregister(net, "nfsd");
|
|
}
|