[linux-2.6-block.git] / fs / nfsd / stats.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");
}
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
1da177e4	2	/*
1da177e4 LT	3	* procfs-based user access to knfsd statistics
	4	*
	5	* /proc/net/rpc/nfsd
	6	*
	7	* Format:
	8	* rc <hits> <misses> <nocache>
	9	* Statistsics for the reply cache
1b76d1df	10	* fh <stale> <deprecated filehandle cache stats>
1da177e4	11	* statistics for filehandle lookup
70f23fd6	12	* io <bytes-read> <bytes-written>
1da177e4	13	* statistics for IO throughput
1b76d1df AG	14	* th <threads> <deprecated thread usage histogram stats>
	15	* number of threads
	16	* ra <deprecated ra-cache stats>
	17	*
1da177e4 LT	18	* plus generic RPC stats (see net/sunrpc/stats.c)
	19	*
	20	* Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de>
	21	*/
	22
1da177e4	23	#include <linux/seq_file.h>
1da177e4	24	#include <linux/module.h>
1da177e4	25	#include <linux/sunrpc/stats.h>
246590f5	26	#include <net/net_namespace.h>
1da177e4	27
9a74af21 BH	28	#include "nfsd.h"
9a74af21 BH	29
0cfb0c42	30	static int nfsd_show(struct seq_file seq, void v)
1da177e4	31	{
4b148854 JB	32	struct net *net = pde_data(file_inode(seq->file));
4b148854 JB	33	struct nfsd_net *nn = net_generic(net, nfsd_net_id);
1da177e4 LT	34	int i;
1da177e4 LT	35
e567b98c	36	seq_printf(seq, "rc %lld %lld %lld\nfh %lld 0 0 0 0\nio %lld %lld\n",
4b148854 JB	37	percpu_counter_sum_positive(&nn->counter[NFSD_STATS_RC_HITS]),
	38	percpu_counter_sum_positive(&nn->counter[NFSD_STATS_RC_MISSES]),
	39	percpu_counter_sum_positive(&nn->counter[NFSD_STATS_RC_NOCACHE]),
	40	percpu_counter_sum_positive(&nn->counter[NFSD_STATS_FH_STALE]),
	41	percpu_counter_sum_positive(&nn->counter[NFSD_STATS_IO_READ]),
	42	percpu_counter_sum_positive(&nn->counter[NFSD_STATS_IO_WRITE]));
1b76d1df	43
1da177e4	44	/* thread usage: */
e41ee44c	45	seq_printf(seq, "th %u 0", atomic_read(&nfsd_th_cnt));
1b76d1df AG	46
	47	/* deprecated thread usage histogram stats */
	48	for (i = 0; i < 10; i++)
	49	seq_puts(seq, " 0.000");
	50
	51	/* deprecated ra-cache stats */
	52	seq_puts(seq, "\nra 0 0 0 0 0 0 0 0 0 0 0 0\n");
	53
1da177e4	54	/* show my rpc info */
16fb9808	55	svc_seq_show(seq, &nn->nfsd_svcstats);
1da177e4	56
e2b20950 SA	57	#ifdef CONFIG_NFSD_V4
	58	/* Show count for individual nfsv4 operations */
	59	/* Writing operation numbers 0 1 2 also for maintaining uniformity */
0e5559eb	60	seq_printf(seq, "proc4ops %u", LAST_NFS4_OP + 1);
e567b98c AG	61	for (i = 0; i <= LAST_NFS4_OP; i++) {
e567b98c AG	62	seq_printf(seq, " %lld",
4b148854	63	percpu_counter_sum_positive(&nn->counter[NFSD_STATS_NFS4_OP(i)]));
e567b98c	64	}
fd19ca36	65	seq_printf(seq, "\nwdeleg_getattr %lld",
4b148854	66	percpu_counter_sum_positive(&nn->counter[NFSD_STATS_WDELEG_GETATTR]));
e2b20950 SA	67
	68	seq_putc(seq, '\n');
	69	#endif
	70
1da177e4 LT	71	return 0;
	72	}
	73
0cfb0c42	74	DEFINE_PROC_SHOW_ATTRIBUTE(nfsd);
1da177e4	75
93483ac5	76	void nfsd_proc_stat_init(struct net *net)
e567b98c	77	{
16fb9808 JB	78	struct nfsd_net *nn = net_generic(net, nfsd_net_id);
	79
	80	svc_proc_register(net, &nn->nfsd_svcstats, &nfsd_proc_ops);
1da177e4 LT	81	}
1da177e4 LT	82
93483ac5	83	void nfsd_proc_stat_shutdown(struct net *net)
1da177e4	84	{
93483ac5	85	svc_proc_unregister(net, "nfsd");
1da177e4	86	}