kernel-ark/fs/nfsd/stats.c
J. Bruce Fields 7663dacd92 nfsd: remove pointless paths in file headers
The new .h files have paths at the top that are now out of date.  While
we're here, just remove all of those from fs/nfsd; they never served any
purpose.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2009-12-15 15:01:47 -05:00

105 lines
2.7 KiB
C

/*
* procfs-based user access to knfsd statistics
*
* /proc/net/rpc/nfsd
*
* Format:
* rc <hits> <misses> <nocache>
* Statistsics for the reply cache
* fh <stale> <total-lookups> <anonlookups> <dir-not-in-dcache> <nondir-not-in-dcache>
* statistics for filehandle lookup
* io <bytes-read> <bytes-writtten>
* statistics for IO throughput
* th <threads> <fullcnt> <10%-20%> <20%-30%> ... <90%-100%> <100%>
* time (seconds) when nfsd thread usage above thresholds
* and number of times that all threads were in use
* ra cache-size <10% <20% <30% ... <100% not-found
* number of times that read-ahead entry was found that deep in
* the cache.
* 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 <linux/nfsd/stats.h>
#include "nfsd.h"
struct nfsd_stats nfsdstats;
struct svc_stat nfsd_svcstats = {
.program = &nfsd_program,
};
static int nfsd_proc_show(struct seq_file *seq, void *v)
{
int i;
seq_printf(seq, "rc %u %u %u\nfh %u %u %u %u %u\nio %u %u\n",
nfsdstats.rchits,
nfsdstats.rcmisses,
nfsdstats.rcnocache,
nfsdstats.fh_stale,
nfsdstats.fh_lookup,
nfsdstats.fh_anon,
nfsdstats.fh_nocache_dir,
nfsdstats.fh_nocache_nondir,
nfsdstats.io_read,
nfsdstats.io_write);
/* thread usage: */
seq_printf(seq, "th %u %u", nfsdstats.th_cnt, nfsdstats.th_fullcnt);
for (i=0; i<10; i++) {
unsigned int jifs = nfsdstats.th_usage[i];
unsigned int sec = jifs / HZ, msec = (jifs % HZ)*1000/HZ;
seq_printf(seq, " %u.%03u", sec, msec);
}
/* newline and ra-cache */
seq_printf(seq, "\nra %u", nfsdstats.ra_size);
for (i=0; i<11; i++)
seq_printf(seq, " %u", nfsdstats.ra_depth[i]);
seq_putc(seq, '\n');
/* show my rpc info */
svc_seq_show(seq, &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, " %u", nfsdstats.nfs4_opcount[i]);
seq_putc(seq, '\n');
#endif
return 0;
}
static int nfsd_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, nfsd_proc_show, NULL);
}
static const struct file_operations nfsd_proc_fops = {
.owner = THIS_MODULE,
.open = nfsd_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
void
nfsd_stat_init(void)
{
svc_proc_register(&nfsd_svcstats, &nfsd_proc_fops);
}
void
nfsd_stat_shutdown(void)
{
svc_proc_unregister("nfsd");
}