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1/*
2 * linux/net/sunrpc/stats.c
3 *
4 * procfs-based user access to generic RPC statistics. The stats files
5 * reside in /proc/net/rpc.
6 *
7 * The read routines assume that the buffer passed in is just big enough.
8 * If you implement an RPC service that has its own stats routine which
9 * appends the generic RPC stats, make sure you don't exceed the PAGE_SIZE
10 * limit.
11 *
12 * Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de>
13 */
14
15#include <linux/module.h>
16#include <linux/slab.h>
17
18#include <linux/init.h>
19#include <linux/kernel.h>
20#include <linux/proc_fs.h>
21#include <linux/seq_file.h>
22#include <linux/sunrpc/clnt.h>
23#include <linux/sunrpc/svcsock.h>
24#include <linux/sunrpc/metrics.h>
25#include <linux/rcupdate.h>
26
27#include "netns.h"
28
29#define RPCDBG_FACILITY RPCDBG_MISC
30
31/*
32 * Get RPC client stats
33 */
34static int rpc_proc_show(struct seq_file *seq, void *v) {
35 const struct rpc_stat *statp = seq->private;
36 const struct rpc_program *prog = statp->program;
37 unsigned int i, j;
38
39 seq_printf(seq,
40 "net %u %u %u %u\n",
41 statp->netcnt,
42 statp->netudpcnt,
43 statp->nettcpcnt,
44 statp->nettcpconn);
45 seq_printf(seq,
46 "rpc %u %u %u\n",
47 statp->rpccnt,
48 statp->rpcretrans,
49 statp->rpcauthrefresh);
50
51 for (i = 0; i < prog->nrvers; i++) {
52 const struct rpc_version *vers = prog->version[i];
53 if (!vers)
54 continue;
55 seq_printf(seq, "proc%u %u",
56 vers->number, vers->nrprocs);
57 for (j = 0; j < vers->nrprocs; j++)
58 seq_printf(seq, " %u",
59 vers->procs[j].p_count);
60 seq_putc(seq, '\n');
61 }
62 return 0;
63}
64
65static int rpc_proc_open(struct inode *inode, struct file *file)
66{
67 return single_open(file, rpc_proc_show, PDE_DATA(inode));
68}
69
70static const struct file_operations rpc_proc_fops = {
71 .owner = THIS_MODULE,
72 .open = rpc_proc_open,
73 .read = seq_read,
74 .llseek = seq_lseek,
75 .release = single_release,
76};
77
78/*
79 * Get RPC server stats
80 */
81void svc_seq_show(struct seq_file *seq, const struct svc_stat *statp) {
82 const struct svc_program *prog = statp->program;
83 const struct svc_procedure *proc;
84 const struct svc_version *vers;
85 unsigned int i, j;
86
87 seq_printf(seq,
88 "net %u %u %u %u\n",
89 statp->netcnt,
90 statp->netudpcnt,
91 statp->nettcpcnt,
92 statp->nettcpconn);
93 seq_printf(seq,
94 "rpc %u %u %u %u %u\n",
95 statp->rpccnt,
96 statp->rpcbadfmt+statp->rpcbadauth+statp->rpcbadclnt,
97 statp->rpcbadfmt,
98 statp->rpcbadauth,
99 statp->rpcbadclnt);
100
101 for (i = 0; i < prog->pg_nvers; i++) {
102 if (!(vers = prog->pg_vers[i]) || !(proc = vers->vs_proc))
103 continue;
104 seq_printf(seq, "proc%d %u", i, vers->vs_nproc);
105 for (j = 0; j < vers->vs_nproc; j++, proc++)
106 seq_printf(seq, " %u", proc->pc_count);
107 seq_putc(seq, '\n');
108 }
109}
110EXPORT_SYMBOL_GPL(svc_seq_show);
111
112/**
113 * rpc_alloc_iostats - allocate an rpc_iostats structure
114 * @clnt: RPC program, version, and xprt
115 *
116 */
117struct rpc_iostats *rpc_alloc_iostats(struct rpc_clnt *clnt)
118{
119 struct rpc_iostats *stats;
120 int i;
121
122 stats = kcalloc(clnt->cl_maxproc, sizeof(*stats), GFP_KERNEL);
123 if (stats) {
124 for (i = 0; i < clnt->cl_maxproc; i++)
125 spin_lock_init(&stats[i].om_lock);
126 }
127 return stats;
128}
129EXPORT_SYMBOL_GPL(rpc_alloc_iostats);
130
131/**
132 * rpc_free_iostats - release an rpc_iostats structure
133 * @stats: doomed rpc_iostats structure
134 *
135 */
136void rpc_free_iostats(struct rpc_iostats *stats)
137{
138 kfree(stats);
139}
140EXPORT_SYMBOL_GPL(rpc_free_iostats);
141
142/**
143 * rpc_count_iostats_metrics - tally up per-task stats
144 * @task: completed rpc_task
145 * @op_metrics: stat structure for OP that will accumulate stats from @task
146 */
147void rpc_count_iostats_metrics(const struct rpc_task *task,
148 struct rpc_iostats *op_metrics)
149{
150 struct rpc_rqst *req = task->tk_rqstp;
151 ktime_t delta, now;
152
153 if (!op_metrics || !req)
154 return;
155
156 now = ktime_get();
157 spin_lock(&op_metrics->om_lock);
158
159 op_metrics->om_ops++;
160 op_metrics->om_ntrans += req->rq_ntrans;
161 op_metrics->om_timeouts += task->tk_timeouts;
162
163 op_metrics->om_bytes_sent += req->rq_xmit_bytes_sent;
164 op_metrics->om_bytes_recv += req->rq_reply_bytes_recvd;
165
166 delta = ktime_sub(req->rq_xtime, task->tk_start);
167 op_metrics->om_queue = ktime_add(op_metrics->om_queue, delta);
168
169 op_metrics->om_rtt = ktime_add(op_metrics->om_rtt, req->rq_rtt);
170
171 delta = ktime_sub(now, task->tk_start);
172 op_metrics->om_execute = ktime_add(op_metrics->om_execute, delta);
173
174 spin_unlock(&op_metrics->om_lock);
175}
176EXPORT_SYMBOL_GPL(rpc_count_iostats_metrics);
177
178/**
179 * rpc_count_iostats - tally up per-task stats
180 * @task: completed rpc_task
181 * @stats: array of stat structures
182 *
183 * Uses the statidx from @task
184 */
185void rpc_count_iostats(const struct rpc_task *task, struct rpc_iostats *stats)
186{
187 rpc_count_iostats_metrics(task,
188 &stats[task->tk_msg.rpc_proc->p_statidx]);
189}
190EXPORT_SYMBOL_GPL(rpc_count_iostats);
191
192static void _print_name(struct seq_file *seq, unsigned int op,
193 struct rpc_procinfo *procs)
194{
195 if (procs[op].p_name)
196 seq_printf(seq, "\t%12s: ", procs[op].p_name);
197 else if (op == 0)
198 seq_printf(seq, "\t NULL: ");
199 else
200 seq_printf(seq, "\t%12u: ", op);
201}
202
203void rpc_print_iostats(struct seq_file *seq, struct rpc_clnt *clnt)
204{
205 struct rpc_iostats *stats = clnt->cl_metrics;
206 struct rpc_xprt *xprt;
207 unsigned int op, maxproc = clnt->cl_maxproc;
208
209 if (!stats)
210 return;
211
212 seq_printf(seq, "\tRPC iostats version: %s ", RPC_IOSTATS_VERS);
213 seq_printf(seq, "p/v: %u/%u (%s)\n",
214 clnt->cl_prog, clnt->cl_vers, clnt->cl_program->name);
215
216 rcu_read_lock();
217 xprt = rcu_dereference(clnt->cl_xprt);
218 if (xprt)
219 xprt->ops->print_stats(xprt, seq);
220 rcu_read_unlock();
221
222 seq_printf(seq, "\tper-op statistics\n");
223 for (op = 0; op < maxproc; op++) {
224 struct rpc_iostats *metrics = &stats[op];
225 _print_name(seq, op, clnt->cl_procinfo);
226 seq_printf(seq, "%lu %lu %lu %Lu %Lu %Lu %Lu %Lu\n",
227 metrics->om_ops,
228 metrics->om_ntrans,
229 metrics->om_timeouts,
230 metrics->om_bytes_sent,
231 metrics->om_bytes_recv,
232 ktime_to_ms(metrics->om_queue),
233 ktime_to_ms(metrics->om_rtt),
234 ktime_to_ms(metrics->om_execute));
235 }
236}
237EXPORT_SYMBOL_GPL(rpc_print_iostats);
238
239/*
240 * Register/unregister RPC proc files
241 */
242static inline struct proc_dir_entry *
243do_register(struct net *net, const char *name, void *data,
244 const struct file_operations *fops)
245{
246 struct sunrpc_net *sn;
247
248 dprintk("RPC: registering /proc/net/rpc/%s\n", name);
249 sn = net_generic(net, sunrpc_net_id);
250 return proc_create_data(name, 0, sn->proc_net_rpc, fops, data);
251}
252
253struct proc_dir_entry *
254rpc_proc_register(struct net *net, struct rpc_stat *statp)
255{
256 return do_register(net, statp->program->name, statp, &rpc_proc_fops);
257}
258EXPORT_SYMBOL_GPL(rpc_proc_register);
259
260void
261rpc_proc_unregister(struct net *net, const char *name)
262{
263 struct sunrpc_net *sn;
264
265 sn = net_generic(net, sunrpc_net_id);
266 remove_proc_entry(name, sn->proc_net_rpc);
267}
268EXPORT_SYMBOL_GPL(rpc_proc_unregister);
269
270struct proc_dir_entry *
271svc_proc_register(struct net *net, struct svc_stat *statp, const struct file_operations *fops)
272{
273 return do_register(net, statp->program->pg_name, statp, fops);
274}
275EXPORT_SYMBOL_GPL(svc_proc_register);
276
277void
278svc_proc_unregister(struct net *net, const char *name)
279{
280 struct sunrpc_net *sn;
281
282 sn = net_generic(net, sunrpc_net_id);
283 remove_proc_entry(name, sn->proc_net_rpc);
284}
285EXPORT_SYMBOL_GPL(svc_proc_unregister);
286
287int rpc_proc_init(struct net *net)
288{
289 struct sunrpc_net *sn;
290
291 dprintk("RPC: registering /proc/net/rpc\n");
292 sn = net_generic(net, sunrpc_net_id);
293 sn->proc_net_rpc = proc_mkdir("rpc", net->proc_net);
294 if (sn->proc_net_rpc == NULL)
295 return -ENOMEM;
296
297 return 0;
298}
299
300void rpc_proc_exit(struct net *net)
301{
302 dprintk("RPC: unregistering /proc/net/rpc\n");
303 remove_proc_entry("rpc", net->proc_net);
304}
305
1/*
2 * linux/net/sunrpc/stats.c
3 *
4 * procfs-based user access to generic RPC statistics. The stats files
5 * reside in /proc/net/rpc.
6 *
7 * The read routines assume that the buffer passed in is just big enough.
8 * If you implement an RPC service that has its own stats routine which
9 * appends the generic RPC stats, make sure you don't exceed the PAGE_SIZE
10 * limit.
11 *
12 * Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de>
13 */
14
15#include <linux/module.h>
16#include <linux/slab.h>
17
18#include <linux/init.h>
19#include <linux/kernel.h>
20#include <linux/proc_fs.h>
21#include <linux/seq_file.h>
22#include <linux/sunrpc/clnt.h>
23#include <linux/sunrpc/svcsock.h>
24#include <linux/sunrpc/metrics.h>
25
26#include "netns.h"
27
28#define RPCDBG_FACILITY RPCDBG_MISC
29
30/*
31 * Get RPC client stats
32 */
33static int rpc_proc_show(struct seq_file *seq, void *v) {
34 const struct rpc_stat *statp = seq->private;
35 const struct rpc_program *prog = statp->program;
36 unsigned int i, j;
37
38 seq_printf(seq,
39 "net %u %u %u %u\n",
40 statp->netcnt,
41 statp->netudpcnt,
42 statp->nettcpcnt,
43 statp->nettcpconn);
44 seq_printf(seq,
45 "rpc %u %u %u\n",
46 statp->rpccnt,
47 statp->rpcretrans,
48 statp->rpcauthrefresh);
49
50 for (i = 0; i < prog->nrvers; i++) {
51 const struct rpc_version *vers = prog->version[i];
52 if (!vers)
53 continue;
54 seq_printf(seq, "proc%u %u",
55 vers->number, vers->nrprocs);
56 for (j = 0; j < vers->nrprocs; j++)
57 seq_printf(seq, " %u",
58 vers->procs[j].p_count);
59 seq_putc(seq, '\n');
60 }
61 return 0;
62}
63
64static int rpc_proc_open(struct inode *inode, struct file *file)
65{
66 return single_open(file, rpc_proc_show, PDE(inode)->data);
67}
68
69static const struct file_operations rpc_proc_fops = {
70 .owner = THIS_MODULE,
71 .open = rpc_proc_open,
72 .read = seq_read,
73 .llseek = seq_lseek,
74 .release = single_release,
75};
76
77/*
78 * Get RPC server stats
79 */
80void svc_seq_show(struct seq_file *seq, const struct svc_stat *statp) {
81 const struct svc_program *prog = statp->program;
82 const struct svc_procedure *proc;
83 const struct svc_version *vers;
84 unsigned int i, j;
85
86 seq_printf(seq,
87 "net %u %u %u %u\n",
88 statp->netcnt,
89 statp->netudpcnt,
90 statp->nettcpcnt,
91 statp->nettcpconn);
92 seq_printf(seq,
93 "rpc %u %u %u %u %u\n",
94 statp->rpccnt,
95 statp->rpcbadfmt+statp->rpcbadauth+statp->rpcbadclnt,
96 statp->rpcbadfmt,
97 statp->rpcbadauth,
98 statp->rpcbadclnt);
99
100 for (i = 0; i < prog->pg_nvers; i++) {
101 if (!(vers = prog->pg_vers[i]) || !(proc = vers->vs_proc))
102 continue;
103 seq_printf(seq, "proc%d %u", i, vers->vs_nproc);
104 for (j = 0; j < vers->vs_nproc; j++, proc++)
105 seq_printf(seq, " %u", proc->pc_count);
106 seq_putc(seq, '\n');
107 }
108}
109EXPORT_SYMBOL_GPL(svc_seq_show);
110
111/**
112 * rpc_alloc_iostats - allocate an rpc_iostats structure
113 * @clnt: RPC program, version, and xprt
114 *
115 */
116struct rpc_iostats *rpc_alloc_iostats(struct rpc_clnt *clnt)
117{
118 return kcalloc(clnt->cl_maxproc, sizeof(struct rpc_iostats), GFP_KERNEL);
119}
120EXPORT_SYMBOL_GPL(rpc_alloc_iostats);
121
122/**
123 * rpc_free_iostats - release an rpc_iostats structure
124 * @stats: doomed rpc_iostats structure
125 *
126 */
127void rpc_free_iostats(struct rpc_iostats *stats)
128{
129 kfree(stats);
130}
131EXPORT_SYMBOL_GPL(rpc_free_iostats);
132
133/**
134 * rpc_count_iostats - tally up per-task stats
135 * @task: completed rpc_task
136 *
137 * Relies on the caller for serialization.
138 */
139void rpc_count_iostats(struct rpc_task *task)
140{
141 struct rpc_rqst *req = task->tk_rqstp;
142 struct rpc_iostats *stats;
143 struct rpc_iostats *op_metrics;
144 ktime_t delta;
145
146 if (!task->tk_client || !task->tk_client->cl_metrics || !req)
147 return;
148
149 stats = task->tk_client->cl_metrics;
150 op_metrics = &stats[task->tk_msg.rpc_proc->p_statidx];
151
152 op_metrics->om_ops++;
153 op_metrics->om_ntrans += req->rq_ntrans;
154 op_metrics->om_timeouts += task->tk_timeouts;
155
156 op_metrics->om_bytes_sent += req->rq_xmit_bytes_sent;
157 op_metrics->om_bytes_recv += req->rq_reply_bytes_recvd;
158
159 delta = ktime_sub(req->rq_xtime, task->tk_start);
160 op_metrics->om_queue = ktime_add(op_metrics->om_queue, delta);
161
162 op_metrics->om_rtt = ktime_add(op_metrics->om_rtt, req->rq_rtt);
163
164 delta = ktime_sub(ktime_get(), task->tk_start);
165 op_metrics->om_execute = ktime_add(op_metrics->om_execute, delta);
166}
167
168static void _print_name(struct seq_file *seq, unsigned int op,
169 struct rpc_procinfo *procs)
170{
171 if (procs[op].p_name)
172 seq_printf(seq, "\t%12s: ", procs[op].p_name);
173 else if (op == 0)
174 seq_printf(seq, "\t NULL: ");
175 else
176 seq_printf(seq, "\t%12u: ", op);
177}
178
179void rpc_print_iostats(struct seq_file *seq, struct rpc_clnt *clnt)
180{
181 struct rpc_iostats *stats = clnt->cl_metrics;
182 struct rpc_xprt *xprt = clnt->cl_xprt;
183 unsigned int op, maxproc = clnt->cl_maxproc;
184
185 if (!stats)
186 return;
187
188 seq_printf(seq, "\tRPC iostats version: %s ", RPC_IOSTATS_VERS);
189 seq_printf(seq, "p/v: %u/%u (%s)\n",
190 clnt->cl_prog, clnt->cl_vers, clnt->cl_protname);
191
192 if (xprt)
193 xprt->ops->print_stats(xprt, seq);
194
195 seq_printf(seq, "\tper-op statistics\n");
196 for (op = 0; op < maxproc; op++) {
197 struct rpc_iostats *metrics = &stats[op];
198 _print_name(seq, op, clnt->cl_procinfo);
199 seq_printf(seq, "%lu %lu %lu %Lu %Lu %Lu %Lu %Lu\n",
200 metrics->om_ops,
201 metrics->om_ntrans,
202 metrics->om_timeouts,
203 metrics->om_bytes_sent,
204 metrics->om_bytes_recv,
205 ktime_to_ms(metrics->om_queue),
206 ktime_to_ms(metrics->om_rtt),
207 ktime_to_ms(metrics->om_execute));
208 }
209}
210EXPORT_SYMBOL_GPL(rpc_print_iostats);
211
212/*
213 * Register/unregister RPC proc files
214 */
215static inline struct proc_dir_entry *
216do_register(const char *name, void *data, const struct file_operations *fops)
217{
218 struct sunrpc_net *sn;
219
220 dprintk("RPC: registering /proc/net/rpc/%s\n", name);
221 sn = net_generic(&init_net, sunrpc_net_id);
222 return proc_create_data(name, 0, sn->proc_net_rpc, fops, data);
223}
224
225struct proc_dir_entry *
226rpc_proc_register(struct rpc_stat *statp)
227{
228 return do_register(statp->program->name, statp, &rpc_proc_fops);
229}
230EXPORT_SYMBOL_GPL(rpc_proc_register);
231
232void
233rpc_proc_unregister(const char *name)
234{
235 struct sunrpc_net *sn;
236
237 sn = net_generic(&init_net, sunrpc_net_id);
238 remove_proc_entry(name, sn->proc_net_rpc);
239}
240EXPORT_SYMBOL_GPL(rpc_proc_unregister);
241
242struct proc_dir_entry *
243svc_proc_register(struct svc_stat *statp, const struct file_operations *fops)
244{
245 return do_register(statp->program->pg_name, statp, fops);
246}
247EXPORT_SYMBOL_GPL(svc_proc_register);
248
249void
250svc_proc_unregister(const char *name)
251{
252 struct sunrpc_net *sn;
253
254 sn = net_generic(&init_net, sunrpc_net_id);
255 remove_proc_entry(name, sn->proc_net_rpc);
256}
257EXPORT_SYMBOL_GPL(svc_proc_unregister);
258
259int rpc_proc_init(struct net *net)
260{
261 struct sunrpc_net *sn;
262
263 dprintk("RPC: registering /proc/net/rpc\n");
264 sn = net_generic(net, sunrpc_net_id);
265 sn->proc_net_rpc = proc_mkdir("rpc", net->proc_net);
266 if (sn->proc_net_rpc == NULL)
267 return -ENOMEM;
268
269 return 0;
270}
271
272void rpc_proc_exit(struct net *net)
273{
274 dprintk("RPC: unregistering /proc/net/rpc\n");
275 remove_proc_entry("rpc", net->proc_net);
276}
277