1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * procfs-based user access to knfsd statistics
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * /proc/net/rpc/nfsd
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * Format:
8*4882a593Smuzhiyun * rc <hits> <misses> <nocache>
9*4882a593Smuzhiyun * Statistsics for the reply cache
10*4882a593Smuzhiyun * fh <stale> <total-lookups> <anonlookups> <dir-not-in-dcache> <nondir-not-in-dcache>
11*4882a593Smuzhiyun * statistics for filehandle lookup
12*4882a593Smuzhiyun * io <bytes-read> <bytes-written>
13*4882a593Smuzhiyun * statistics for IO throughput
14*4882a593Smuzhiyun * th <threads> <fullcnt> <10%-20%> <20%-30%> ... <90%-100%> <100%>
15*4882a593Smuzhiyun * time (seconds) when nfsd thread usage above thresholds
16*4882a593Smuzhiyun * and number of times that all threads were in use
17*4882a593Smuzhiyun * ra cache-size <10% <20% <30% ... <100% not-found
18*4882a593Smuzhiyun * number of times that read-ahead entry was found that deep in
19*4882a593Smuzhiyun * the cache.
20*4882a593Smuzhiyun * plus generic RPC stats (see net/sunrpc/stats.c)
21*4882a593Smuzhiyun *
22*4882a593Smuzhiyun * Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de>
23*4882a593Smuzhiyun */
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun #include <linux/seq_file.h>
26*4882a593Smuzhiyun #include <linux/module.h>
27*4882a593Smuzhiyun #include <linux/sunrpc/stats.h>
28*4882a593Smuzhiyun #include <net/net_namespace.h>
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun #include "nfsd.h"
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun struct nfsd_stats nfsdstats;
33*4882a593Smuzhiyun struct svc_stat nfsd_svcstats = {
34*4882a593Smuzhiyun .program = &nfsd_program,
35*4882a593Smuzhiyun };
36*4882a593Smuzhiyun
nfsd_proc_show(struct seq_file * seq,void * v)37*4882a593Smuzhiyun static int nfsd_proc_show(struct seq_file *seq, void *v)
38*4882a593Smuzhiyun {
39*4882a593Smuzhiyun int i;
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun seq_printf(seq, "rc %u %u %u\nfh %u %u %u %u %u\nio %u %u\n",
42*4882a593Smuzhiyun nfsdstats.rchits,
43*4882a593Smuzhiyun nfsdstats.rcmisses,
44*4882a593Smuzhiyun nfsdstats.rcnocache,
45*4882a593Smuzhiyun nfsdstats.fh_stale,
46*4882a593Smuzhiyun nfsdstats.fh_lookup,
47*4882a593Smuzhiyun nfsdstats.fh_anon,
48*4882a593Smuzhiyun nfsdstats.fh_nocache_dir,
49*4882a593Smuzhiyun nfsdstats.fh_nocache_nondir,
50*4882a593Smuzhiyun nfsdstats.io_read,
51*4882a593Smuzhiyun nfsdstats.io_write);
52*4882a593Smuzhiyun /* thread usage: */
53*4882a593Smuzhiyun seq_printf(seq, "th %u %u", nfsdstats.th_cnt, nfsdstats.th_fullcnt);
54*4882a593Smuzhiyun for (i=0; i<10; i++) {
55*4882a593Smuzhiyun unsigned int jifs = nfsdstats.th_usage[i];
56*4882a593Smuzhiyun unsigned int sec = jifs / HZ, msec = (jifs % HZ)*1000/HZ;
57*4882a593Smuzhiyun seq_printf(seq, " %u.%03u", sec, msec);
58*4882a593Smuzhiyun }
59*4882a593Smuzhiyun
60*4882a593Smuzhiyun /* newline and ra-cache */
61*4882a593Smuzhiyun seq_printf(seq, "\nra %u", nfsdstats.ra_size);
62*4882a593Smuzhiyun for (i=0; i<11; i++)
63*4882a593Smuzhiyun seq_printf(seq, " %u", nfsdstats.ra_depth[i]);
64*4882a593Smuzhiyun seq_putc(seq, '\n');
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun /* show my rpc info */
67*4882a593Smuzhiyun svc_seq_show(seq, &nfsd_svcstats);
68*4882a593Smuzhiyun
69*4882a593Smuzhiyun #ifdef CONFIG_NFSD_V4
70*4882a593Smuzhiyun /* Show count for individual nfsv4 operations */
71*4882a593Smuzhiyun /* Writing operation numbers 0 1 2 also for maintaining uniformity */
72*4882a593Smuzhiyun seq_printf(seq,"proc4ops %u", LAST_NFS4_OP + 1);
73*4882a593Smuzhiyun for (i = 0; i <= LAST_NFS4_OP; i++)
74*4882a593Smuzhiyun seq_printf(seq, " %u", nfsdstats.nfs4_opcount[i]);
75*4882a593Smuzhiyun
76*4882a593Smuzhiyun seq_putc(seq, '\n');
77*4882a593Smuzhiyun #endif
78*4882a593Smuzhiyun
79*4882a593Smuzhiyun return 0;
80*4882a593Smuzhiyun }
81*4882a593Smuzhiyun
nfsd_proc_open(struct inode * inode,struct file * file)82*4882a593Smuzhiyun static int nfsd_proc_open(struct inode *inode, struct file *file)
83*4882a593Smuzhiyun {
84*4882a593Smuzhiyun return single_open(file, nfsd_proc_show, NULL);
85*4882a593Smuzhiyun }
86*4882a593Smuzhiyun
87*4882a593Smuzhiyun static const struct proc_ops nfsd_proc_ops = {
88*4882a593Smuzhiyun .proc_open = nfsd_proc_open,
89*4882a593Smuzhiyun .proc_read = seq_read,
90*4882a593Smuzhiyun .proc_lseek = seq_lseek,
91*4882a593Smuzhiyun .proc_release = single_release,
92*4882a593Smuzhiyun };
93*4882a593Smuzhiyun
94*4882a593Smuzhiyun void
nfsd_stat_init(void)95*4882a593Smuzhiyun nfsd_stat_init(void)
96*4882a593Smuzhiyun {
97*4882a593Smuzhiyun svc_proc_register(&init_net, &nfsd_svcstats, &nfsd_proc_ops);
98*4882a593Smuzhiyun }
99*4882a593Smuzhiyun
100*4882a593Smuzhiyun void
nfsd_stat_shutdown(void)101*4882a593Smuzhiyun nfsd_stat_shutdown(void)
102*4882a593Smuzhiyun {
103*4882a593Smuzhiyun svc_proc_unregister(&init_net, "nfsd");
104*4882a593Smuzhiyun }
105